0000100517-26-000023 | 10-K | XBRL Viewer | United Airlines Holdings INC

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INCOME TAXES - Schedule of Income Tax Payments, Net of Refunds (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Paid, by Individual Jurisdiction [Line Items]
Federal	$ 33	$ 47	$ 1
Income taxes	62	88	7
California
Income Tax Paid, by Individual Jurisdiction [Line Items]
State	13	25	(4)
Illinois
Income Tax Paid, by Individual Jurisdiction [Line Items]
State	2	5	3
All other state
Income Tax Paid, by Individual Jurisdiction [Line Items]
State	2	4	2
Guatemala
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	3	3	3
India
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	3	2	1
All other foreign
Income Tax Paid, by Individual Jurisdiction [Line Items]
Foreign	$ 6	$ 2	$ 1

SHARE-BASED COMPENSATION PLANS - Narrative (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of RSUs and restricted stock vested in period	$ 135	$ 91	$ 76
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	1.8
Number of days used to compute performance period average closing price of restricted stock units	20 days
Liabilities related to share based payments	$ 7
Payment related to share-based liabilities	$ 6	$ 2	$ 3
Time-Vested RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	1.0
Award vesting period	3 years
Performance-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards granted (in shares)	0.8
Award vesting period	3 years
Continuous employment period	3 years
Award vesting percentage	33.33%
Performance-Based RSUs \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award payout percentage	0.00%
Performance-Based RSUs \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award payout percentage	300.00%

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2025
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation United Airlines Holdings, Inc. (together with its consolidated subsidiaries, "UAL" or the "Company") is a holding company incorporated in Delaware and its wholly-owned subsidiary is United Airlines, Inc. (together with its consolidated subsidiaries, "United"). As UAL consolidates United for financial statement purposes, disclosures that relate to activities of United also apply to UAL, unless otherwise noted. United comprises substantially all of UAL's operating revenues, operating expenses, assets, liabilities and operating cash flows. When appropriate, UAL and United are named specifically for their individual contractual obligations and related disclosures and any significant differences between the operations and results of UAL and United are separately disclosed and explained. The Company's consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). The Company consolidates variable interest entities when it determines that it is the primary beneficiary of those entities' operations. All material intercompany accounts and transactions have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the current period presentation. In 2025, the Company changed its rounding presentation to the nearest whole number in millions of reported amounts, except per share data or as otherwise designated. As such, certain columns and rows within the financial statements and tables presented may not sum due to rounding. Per unit amounts have been calculated from the underlying whole-dollar amounts. This change is not material and does not impact the comparability of our condensed consolidated financial statements.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in these financial statements and accompanying notes. Actual results could differ from those estimates.
Segments	Segments Operating segments are defined as components of an enterprise with separate financial information, which are evaluated regularly by the chief operating decision maker ("CODM") and are used to assess performance and allocate resources. The Company manages its operations as one segment. Managing the Company as one segment allows management the opportunity to maximize the value of its route network and maximize the Company's consolidated financial results. The Company deploys its aircraft across its route network through a single route scheduling system to maximize its value. The Company's chief executive officer is its CODM. When making resource allocation decisions for the network, the Company's CODM evaluates flight profitability data, which considers aircraft type and route economics. The CODM assesses performance of the Company and makes resource allocation decisions based on net income as reported in the Company's statement of consolidated operations. Within the statement of consolidated operations, Other expenses represent various purchased services related to the operations of the airline such as ground handling, passenger services, food and beverage offerings, navigation fees, personnel-related costs and information technology projects. The measure of segment assets is reported on the consolidated balance sheet as Total assets.
Cash and Cash Equivalents and Restricted Cash	Cash and Cash Equivalents and Restricted Cash. Highly liquid investments with a maturity of three months or less on their acquisition date are classified as cash and cash equivalents. Restricted cash is classified as current or noncurrent in the consolidated balance sheets based on the expected timing of return of the assets to the Company or payment to an outside party. The restricted cash balances primarily include collateral for letters of credit and collateral associated with facility leases and certain insurance-related obligations.
Investments	Investments. Highly liquid investments with maturities of greater than three months, but not beyond one year, at the time of purchase are classified as short-term investments and are stated at fair value. Investments with maturities beyond one year when purchased are classified as short-term investments if they are expected to be available to support the Company's short-term liquidity needs. Short-term investments in debt securities are classified as available-for-sale and are stated at fair value. Realized gains and losses on sales of these investments are reflected in Interest income in the statements of consolidated operations. Unrealized gains and losses on available-for-sale debt securities are reflected as a component of accumulated other comprehensive income (loss). Equity investments are accounted for under the equity method if we are able to exercise significant influence over the investee. Equity investments for which we do not have significant influence are recorded at fair value or at cost, if fair value is not readily determinable, with adjustments for observable changes in price or impairments (referred to as the measurement alternative). Changes in fair value are recorded in Unrealized gains (losses) on investments, net in the statements of consolidated operations. See Note 9 of this report for additional information related to investments.
Receivables	Receivables. Receivables primarily consist of amounts due from credit card companies, non-airline partners, and cargo customers. We provide an allowance for credit losses expected to be incurred. We base our allowance on various factors including, but not limited to, aging, payment history, write-offs, macro-economic indicators and other credit monitoring indicators.
Aircraft Fuel, Spare Parts and Supplies	Aircraft Fuel, Spare Parts and Supplies. The Company accounts for aircraft fuel, spare parts and supplies at average cost and provides an obsolescence allowance for aircraft spare parts with an assumed residual value of 10% of original cost.
Property and Equipment	Property and Equipment. The Company records additions to owned operating property and equipment at cost when acquired. Costs related to modifications that enhance the operating performance or extend the useful lives of airframes or engines are capitalized as property and equipment. We periodically receive credits in connection with the acquisition of aircraft and engines as well as contractual damages related to delays in delivery or operating performance issues. These credits are generally deferred and are recognized as a reduction to the cost of the related equipment. Depreciation and amortization is recognized on a straight-line basis over the assets' estimated useful lives. Leasehold improvements are amortized over the shorter of the remaining term of the lease or the estimated useful life of the related asset.
Leases	Leases. The Company enters into various leases as a lessee for assets including, but not limited to, airport facilities, airport gates, hangar sites, administrative offices, aircraft, and various other facilities and equipment to support its operations. The Company determines if an arrangement contains a lease at inception. A lease exists when the arrangement conveys the right to control the use of an identified asset over the lease term. Upon lease commencement, the Company records a lease liability for the obligation to make lease payments and a right-of-use asset for the right to use the underlying asset for the lease term in the consolidated balance sheets. The lease liability is measured at the commencement date based on the present value of lease payments not yet paid over the lease term, which includes extension and renewal options that are reasonably certain of being exercised, discounted using an incremental borrowing rate that reflects the term of the lease and the particular economic environment at lease commencement. The right-of-use asset is based on the lease liability, adjusted for lease prepayments, lease incentives received, and the lessee's initial direct costs. The Company does not record a right-of-use asset or lease liability for leases with an initial term of 12 months or less. Lease and non-lease components are combined for all classes of underlying assets, except for capacity purchase agreements ("CPAs") which contain embedded leases for regional aircraft. For these CPAs, the Company allocates consideration to the lease and non-lease components based on their relative standalone values. Many of the Company's leases include variable lease payments, which are not included in the measurement of the right-of-use asset and lease liability. Finance lease right-of-use assets are presented together with Operating property and equipment on the consolidated balance sheets and the related amortization is included in Depreciation and amortization expense.
Long-Lived Asset Impairments	Long-Lived Asset Impairments. The Company evaluates the carrying value of long-lived assets subject to amortization whenever events or changes in circumstances indicate that an impairment may exist. For purposes of this testing, the Company has generally identified the aircraft fleet type as the lowest level of identifiable cash flows for its mainline fleet and the contract level for its regional fleet under CPAs. An impairment charge is recognized when the asset's carrying value exceeds its net undiscounted future cash flows. The amount of the charge is the difference between the asset's carrying value and fair market value.
Intangibles Assets	Intangible Assets. The Company has finite-lived and indefinite-lived intangible assets, including goodwill. Finite-lived intangible assets are amortized over their estimated useful lives. Goodwill and indefinite-lived intangible assets are not amortized but are assessed for impairment on an annual basis as of October 1, or more frequently if events or circumstances indicate that the asset may be impaired. The Company typically determines fair value using either a market approach or a variation of the income approach valuation techniques. These measurements include the following key assumptions: (1) forecasted revenues, expenses, margin and cash flows, (2) terminal period growth rate, (3) an estimated weighted average cost of capital, (4) asset-specific risk factor and (5) a tax rate. These assumptions are consistent with those that hypothetical market participants would use. We recognize an impairment when the fair value of an intangible asset is less than its carrying value. For the Company's China route authority, the Company performed a quantitative assessment which involved determining the fair value of the asset and comparing that amount to the asset's carrying value. For all other intangible assets, the Company performed a qualitative assessment of whether it was more likely than not that an impairment had occurred. To determine the fair value of the China route authority, the Company used a discounted cash flow method. Key assumptions used in the valuation model included forecasted revenues, margin and an overall discount rate. These assumptions are inherently uncertain as they relate to future events and circumstances.
Labor Costs	Labor Costs. The Company records expenses associated with new or amendable labor agreements when the amounts are probable and estimable. These expenses could include costs associated with retro-active lump sum cash payments made in conjunction with the ratification of labor agreements. To the extent these upfront costs are in lieu of future pay increases, they would be capitalized and amortized over the term of the labor agreements. If not, these amounts would be expensed.
Share-Based Compensation	Share-Based Compensation. The Company measures the cost of employee services received in exchange for an award of equity instruments based on the grant date fair value of the award. The resulting cost is recognized over the period during which an employee is required to provide service in exchange for the award, which is usually the vesting period. Obligations for cash-settled restricted stock units ("RSUs") are remeasured at fair value throughout the requisite service period at the close of the reporting period based upon UAL's stock price. In addition to the service requirement, certain RSUs have performance metrics that must be achieved prior to vesting. These awards are accrued based on the expected level of achievement at each reporting period. An adjustment is recorded each reporting period to adjust compensation expense based on the then current level of expected performance achievement for the performance-based awards. See Note 5 of this report for additional information on UAL's share-based compensation plans.
Maintenance and Repairs	Maintenance and Repairs. The cost of maintenance and repairs, including the cost of minor replacements, is charged to expense as incurred, except for costs incurred under the Company's power-by-the-hour ("PBTH") engine maintenance agreements. PBTH contracts transfer certain risk to third-party service providers and fix the amount we pay per flight hour or per cycle to the service provider in exchange for maintenance and repairs under a predefined maintenance program. Under PBTH agreements, the Company recognizes expense at a level rate per engine hour, unless the level of service effort and the related payments during the period are substantially consistent, in which case the Company recognizes expense based on the amounts paid.
Advertising	Advertising. Advertising costs, which are included in Other operating expenses, are expensed as incurred.
Third-Party Business	Third-Party Business. The Company has third-party business activity that includes ground handling, maintenance services, flight academy and frequent flyer award non-travel redemptions. Third-party business revenue is recorded in Other operating revenue. Expenses associated with these third-party business activities are recorded in Other operating expenses, except for non-travel mileage redemptions which are recorded to Other operating revenue.
Uncertain Income Tax Positions	Uncertain Income Tax Positions. The Company has recorded reserves for income taxes and associated interest that may become payable in future years. Although management believes that its positions taken on income tax matters are reasonable, the Company nevertheless established tax and interest reserves in recognition that various taxing authorities may challenge certain of the positions taken by the Company, potentially resulting in additional liabilities for taxes and interest. The Company's uncertain tax position reserves are reviewed periodically and are adjusted as events occur that affect its estimates, such as the availability of new information, the lapsing of applicable statutes of limitation, the conclusion of tax audits, the measurement of additional estimated liability, the identification of new tax matters, the release of administrative tax guidance affecting its estimates of tax liabilities, or the rendering of relevant court decisions. The Company records penalties and interest relating to uncertain tax positions as part of income tax expense in its statements of consolidated operations.
Fair Value Measurements	Fair Value Measurements. The Company measures certain financial assets and liabilities at fair value on a recurring basis, and certain non-financial assets and liabilities on a nonrecurring basis. The Company uses valuation techniques to measure fair value that maximize the use of observable inputs and minimize the use of unobservable inputs. These inputs are prioritized as follows: •Level 1 - Unadjusted quoted prices in active markets for assets or liabilities identical to those to be reported at fair value •Level 2 - Other inputs that are observable directly or indirectly, such as quoted prices for similar assets or liabilities or market-corroborated inputs •Level 3 - Unobservable inputs for which there is little or no market data and which require us to develop our own assumptions about how market participants would price the assets or liabilities.
Recently Issued Accounting Standards	Recently Issued Accounting Standards Income Taxes. In December 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures." This ASU enhances disclosures related to income taxes, including the rate reconciliation and information on income taxes paid. The Company adopted the standard beginning with our annual reporting for fiscal year 2025. The adoption resulted in incremental disclosures. See Note 7 of this report for these disclosures. Internal-Use Software. In September 2025, the FASB issued ASU No. 2025-06, "Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40)." The guidance removes all references to project stages throughout ASC 350-40 and clarifies the threshold entities apply to begin capitalizing costs. This guidance requires internal-use software development cost capitalization to begin when both of the following occur: management has authorized and committed to funding the software project and, it is probable the project will be completed and the software will be used to perform its intended function. The guidance is effective for the Company for annual and interim reporting periods beginning January 1, 2028; early adoption is permitted. The Company early adopted this ASU on January 1, 2026, using the prospective transition approach, which applies this guidance to new software costs incurred starting on the adoption date. The adoption will not have a material impact on the Company's consolidated financial statements. Expense Disaggregation Disclosures. In November 2024, the FASB issued ASU No. 2024-03, "Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses." This ASU requires disclosing disaggregated information about certain income statement expense captions but does not change the presentation of expense information or expense captions reported on the face of the income statement. This ASU is effective for the Company for annual reporting periods beginning January 1, 2027 and interim reporting periods beginning January 1, 2028; early adoption is permitted. The Company is assessing the impact of this ASU and upon adoption may be required to include certain additional disclosures.
Revenue Recognition	Passenger Revenue. Passenger revenue is recognized when transportation is provided. Passenger tickets and related ancillary services sold by the Company for flights are purchased primarily via credit card transactions, with payments collected by the Company in advance of the performance of related services. The Company initially records ticket sales in its Advance ticket sales liability, deferring revenue recognition until the travel occurs. For travel that has more than one flight segment, the Company deems each segment as a separate performance obligation and recognizes revenue for each segment as travel occurs. Tickets sold by other airlines where the Company provides the transportation are recognized as passenger revenue at the estimated value to be billed to the other airline when travel is provided. Differences between amounts billed and the actual amounts may be rejected and rebilled or written off if the amount recorded was different from the original estimate. When necessary, the Company records a reserve against its billings and payables with other airlines based on historical experience. The Company sells certain tickets with connecting flights with one or more segments operated by its other airline partners. For segments operated by its other airline partners, the Company has determined that it is acting as an agent on behalf of the other airlines as they are responsible for their portion of the contract (i.e., transportation of the passenger). The Company, as the agent, recognizes revenue within Other operating revenue at the time of the travel for the net amount representing commission to be retained by the Company for any segments flown by other airlines. Refundable tickets expire after one year from the date of issuance. Non-refundable tickets generally expire on the date of the intended travel, unless the date is extended by notification from the customer on or before the intended travel date. United initially capitalizes the costs of selling airline travel tickets and then recognizes those costs as Distribution expense at the time of travel. Costs to sell a ticket include credit card fees, travel agency and other commissions paid, as well as global distribution systems booking fees. Advance ticket sales. Advance ticket sales represent the Company's liability to provide air transportation in the future. All tickets sold at any given point in time have travel dates through the next 12 months. The Company defers amounts related to future travel in its Advance ticket sales liability account. Estimate of tickets not expected to be used ("ticket breakage"). The Company estimates the value of advance ticket sales that will ultimately expire unused based on historical experience and qualitative factors such as recent program changes. The Company recognizes revenue related to these tickets based on the pattern in which concurrently sold tickets are used. The Company attributes revenue among the geographic regions based upon the origin and destination of each flight segment. The Company's operations involve an insignificant level of revenue-producing assets in geographic regions as the overwhelming majority of the Company's revenue-producing assets (primarily U.S. registered aircraft) can be deployed in any of its geographic regions. Ancillary services. The Company charges fees, separately from ticket sales, for certain ancillary services that are directly related to passenger travel, such as baggage fees, premium seat fees, inflight amenity fees, and other ticket-related fees. These ancillary fees are part of the travel performance obligation and, as such, are recognized as Passenger revenue when the travel occurs.Cargo Revenue. Cargo revenue is recognized when the related shipment arrives at its destination.
Ticket Taxes	Ticket taxes. Certain governmental taxes are imposed on the Company's ticket sales through a fee included in ticket prices. The Company collects these fees and remits them to the appropriate government agency. These fees are excluded from the contract transaction price and are therefore not included in passenger revenue. We record a liability when amounts are collected and reduce the liability when payments are made to the appropriate taxing authority.
Frequent Flyer Accounting	Frequent Flyer Program. United's MileagePlus loyalty program builds customer loyalty by offering awards, benefits and services to program participants. Members in this program earn miles for travel on United, United Express, Star Alliance members and certain other airlines that participate in the program. Members can also earn miles by purchasing goods and services from our network of non-airline partners. We have contracts to sell miles to these partners with the terms extending from approximately one to five years. These partners include domestic and international credit card issuers, retail merchants, hotels, car rental companies and our participating airline partners. Miles can be redeemed for free (other than taxes and government-imposed fees), discounted or upgraded air travel and non-travel awards. Miles earned in conjunction with travel. When MileagePlus members earn miles for flights, the Company recognizes a portion of the ticket sales as revenue when the travel occurs and defers a portion of the ticket sale representing the value of the related miles as a separate performance obligation. The Company determines the estimated selling price of travel and miles as if each performance obligation is sold on a separate basis. The total consideration from each ticket sale is then allocated to each of the performance obligations, individually, on a pro-rata basis. At the time of travel, the Company records the portion allocated to the miles to Frequent flyer deferred revenue on the Company's consolidated balance sheet and subsequently recognizes it into revenue when miles are redeemed for air travel and non-travel awards. Estimate of miles not expected to be redeemed ("mileage breakage"). The Company's mileage breakage model is based on the assumption that the likelihood that an account will redeem its miles can be estimated based on a consideration of the account's historical behavior. The Company uses a statistical model to estimate the probability that an account will redeem its current miles balance and reviews its mileage breakage estimates annually. The Company's estimate of the expected mileage breakage requires management judgment. Changes to mileage breakage assumptions, or to program rules and program redemption opportunities, may result in material changes to the deferred revenue balance as well as recognized revenues from the program. We recognize mileage breakage proportionally as the remaining miles are redeemed. Estimated selling price of miles. The Company's estimated selling price of miles is based on an equivalent ticket value, which incorporates the expected redemption of miles, as the best estimate of the selling price for these miles. The equivalent ticket value is based on the prior 12 months' weighted average equivalent ticket value of similar fares as those used to settle award redemptions while taking into consideration such factors as redemption pattern, cabin class, loyalty status and geographic region. The estimated selling price of miles is adjusted by mileage breakage that considers a number of factors, including redemption patterns of various customer groups. Co-Brand agreement. United's most significant contract to sell MileagePlus miles is with its co-branded credit card partner JPMorgan Chase Bank USA, N.A. ("Chase"). Chase awards miles to MileagePlus members based on their credit card activity. United identified the following significant separately identifiable performance obligations in this contract (the "Co-Brand Agreement"): •MileagePlus miles awarded – United has a performance obligation to provide MileagePlus cardholders with miles to be used for air travel and non-travel award redemptions. The Company records Passenger revenue related to the travel awards when the transportation is provided and records Other operating revenue related to the non-travel awards when the goods or services are delivered. The Company records the cost associated with non-travel awards in Other operating revenue, as an agent. •Marketing – United has a performance obligation to provide Chase access to United's customer list and the use of United's brand. Marketing revenue is recorded to Other operating revenue as miles are delivered to Chase. •Advertising – United has a performance obligation to provide advertising in support of the MileagePlus card in various customer contact points such as United's website, email promotions, direct mail campaigns, airport advertising and in-flight advertising. Advertising revenue is recorded to Other operating revenue as miles are delivered to Chase. •Other travel-related benefits – United's performance obligations are comprised of various items such as waived bag fees, seat upgrades and lounge passes. Lounge passes are recorded to Other operating revenue as customers use the lounge passes. Bag fees and seat upgrades are recorded to Passenger revenue at the time of the associated travel. We account for payments received under the Co-Brand Agreement by allocating them to the separately identifiable performance obligations. The fair value of the separately identifiable performance obligations is determined using management's estimated selling price of each component. The objective of using the estimated selling price based methodology is to determine the price at which we would transact a sale if the product or service were sold on a stand-alone basis. Accordingly, we determine our best estimate of selling price by considering multiple inputs and methods including, but not limited to, discounted cash flows, brand value, volume discounts, published selling prices, number of miles awarded and number of miles redeemed. The Company estimated the selling prices and volumes over the term of the Co-Brand Agreement, at the inception of the contract, in order to determine the allocation of proceeds to each of the components to be delivered. Frequent flyer deferred revenue. Miles in MileagePlus members' accounts are combined into one homogeneous pool and are thus not separately identifiable, for award redemption purposes, between miles earned in the current period and those in their beginning balance. Of the miles expected to be redeemed, the Company expects the majority of these miles to be redeemed within two years. The current portion of the Frequent flyer deferred revenue is based on expected redemptions in the next 12 months.

EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Earnings available to common stockholders	$ 3,353	$ 3,149	$ 2,618
Basic weighted-average shares outstanding (in shares)	324.9	328.6	327.8
Dilutive effect of stock Warrants (in shares)	0.3	1.7	2.2
Dilutive effect of employee stock awards (in shares)	3.3	2.9	1.9
Diluted weighted-average shares outstanding (in shares)	328.5	333.2	331.9
Earnings per share, basic (in dollars per share)	$ 10.32	$ 9.58	$ 7.98
Earnings per share, diluted (in dollars per share)	$ 10.20	$ 9.45	$ 7.89
Stock Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0.0	0.0	1.5
Employee stock awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities (in shares)	0.3	0.3	0.6

LEASES - Additional Information Related to Leases (Details)	Dec. 31, 2025	Dec. 31, 2024
Leases [Abstract]
Weighted-average remaining lease term - operating leases	11 years	11 years
Weighted-average remaining lease term - finance leases	2 years	2 years
Weighted-average remaining lease term - other financial liabilities	9 years	10 years
Weighted-average discount rate - operating leases	6.00%	5.90%
Weighted-average discount rate - finance leases	5.30%	5.90%
Weighted-average interest rate - other financial liabilities	5.80%	5.30%

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) segment	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of operating segments \| segment	1
Allowance for obsolescence	$ 830	$ 739
Obsolescence expense	119	175	$ 102
Carrying value of computer software	455	456
Amortization expense	28	32	37
Projected amortization expense in 2026	18
Projected amortization expense in 2027	11
Projected amortization expense in 2028	10
Projected amortization expense in 2029	8
Projected amortization expense in 2030	7
Advertising expense	250	235	221
Computer software
Summary Of Significant Accounting Policies [Line Items]
Depreciation expense	$ 160	$ 155	$ 168

CONSOLIDATED BALANCE SHEETS (UAH) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
ASSETS
Cash and cash equivalents	$ 5,942	$ 8,769
Short-term investments	6,298	5,706
Receivables, net	2,391	2,163
Aircraft fuel, spare parts and supplies, net	1,556	1,572
Prepaid expenses and other	671	673
Total current assets	16,857	18,883
Operating property and equipment, net	46,121	42,908
Operating lease right-of-use assets	4,958	3,815
Goodwill	4,527	4,527
Intangible assets, net	2,655	2,683
Investments in affiliates and other, net	1,330	1,267
Total noncurrent assets	59,591	55,200
Total assets	76,448	74,083
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	4,567	4,193
Accrued salaries and benefits	3,900	3,289
Advance ticket sales	8,131	7,561
Frequent flyer deferred revenue	3,721	3,403
Current maturities of long-term debt, finance leases, and other financial liabilities	4,426	3,453
Current maturities of operating leases	631	467
Other	757	948
Total current liabilities	26,133	23,314
Long-term debt, finance leases, and other financial liabilities	20,562	25,203
Long-term obligations under operating leases	5,417	4,510
Frequent flyer deferred revenue	4,056	4,038
Pension and postretirement benefit liability	1,058	1,233
Deferred income taxes	2,463	1,580
Other	1,478	1,530
Total noncurrent liabilities	35,033	38,094
Commitments and Contingencies
Stockholders' equity:
Preferred stock	0	0
Common stock at par, $0.01 par value; authorized 1,000,000,000 shares; outstanding 323,470,682 and 327,899,771 shares at December 31, 2025 and 2024, respectively	4	4
Additional capital invested	8,911	8,980
Stock held in treasury, at cost	(3,773)	(3,377)
Retained earnings	10,092	6,880
Accumulated other comprehensive income	48	188
Total stockholders' equity	15,282	12,675
Total liabilities and stockholders' equity	$ 76,448	$ 74,083

CONSOLIDATED BALANCE SHEETS (UA) (Parenthetical) - $ / shares	Dec. 31, 2025	Dec. 31, 2024
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, authorized (in shares)	1,000,000,000	1,000,000,000
Common shares, issued (in shares)	323,470,682	327,899,771
Common shares, outstanding (in shares)	323,470,682	327,899,771
United Airlines, Inc.
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, authorized (in shares)	1,000	1,000
Common shares, issued (in shares)	1,000	1,000
Common shares, outstanding (in shares)	1,000	1,000

REVENUE RECOGNITION - Roll Forward of Frequent Flyer Deferred Revenue (Details) - Frequent Flyer - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Movement in Deferred Revenue [Roll Forward]
Balance at January 1	$ 7,441	$ 7,143
Miles earned	3,883	3,563
Travel miles redeemed	(3,414)	(3,150)
Non-travel miles redeemed	(133)	(115)
Balance at December 31	$ 7,777	$ 7,441

COMMITMENTS, CONTINGENCIES AND GUARANTEES - Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($) employee aircraft option	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2017 USD ($)
Commitments and Contingencies [Line Items]
Carrying amount of loan receivable		$ 54
Liabilities due		$ 4,567	$ 4,193
Number of call options to purchase regional jet aircraft \| option		194
Commitment payment					$ 175
Aggregate balance		$ 4,368
Expenses related to ratification payment	$ 561	561	0	$ 814
Tax-Exempt Special Facilities Revenue Bonds
Commitments and Contingencies [Line Items]
Underlying debt and interest		2,800
Tax-Exempt Special Facilities Revenue Bonds \| Indirect Guarantee of Indebtedness
Commitments and Contingencies [Line Items]
Underlying debt and interest		513
Contingent liabilities based on participation		2,900
Floating Rate Debt
Commitments and Contingencies [Line Items]
Long term debt		$ 8,600
Debt instrument, remaining terms		12 years
Loans And Leases From Non-U.S. Entities
Commitments and Contingencies [Line Items]
Debt instrument, remaining terms		12 years
Aggregate balance		$ 5,400
United Airlines, Inc.
Commitments and Contingencies [Line Items]
Liabilities due		$ 4,567	4,193
Number of employees \| employee		113,200
Percentage of employees represented by various U.S. labor organizations		83.00%
United Airlines, Inc. \| Surety Bonds
Commitments and Contingencies [Line Items]
Contingent liabilities based on participation		$ 395
United Airlines, Inc. \| Regional Aircraft \| Capacity Purchase Agreements
Commitments and Contingencies [Line Items]
Expenses related to CPAs		1,100	1,100	$ 1,100
United Airlines, Inc. \| Regional Aircraft \| Capacity Purchase Agreements \| Related Party
Commitments and Contingencies [Line Items]
Carrying amount of loan receivable		82	52
Liabilities due		$ 165	$ 110
United Airlines, Inc. \| Cash Collateralized Letters of Credit
Commitments and Contingencies [Line Items]
Number of aircraft operated \| aircraft		424

STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (LOSS) (UAH) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 3,353	$ 3,149	$ 2,618
Other comprehensive income (loss), net of tax:
Employee benefit plans	(148)	247	(261)
Investments and other	8	3	24
Total other comprehensive income (loss), net of tax	(140)	250	(237)
Total comprehensive income, net	$ 3,214	$ 3,399	$ 2,381

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

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+ Details

FAIR VALUE MEASUREMENTS, INVESTMENTS AND NOTES RECEIVABLE

12 Months Ended

Dec. 31, 2025

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS, INVESTMENTS AND NOTES RECEIVABLE

Fair Value Measurement. The table below presents the fair value of financial assets and liabilities measured at fair value, based on the inputs described in Note 1, on a recurring basis in the Company's financial statements as of December 31 (in millions):


	2025								2024
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Cash and cash equivalents	$	5,942	$	5,942	$	—	$	—	$	8,769	$	8,769	$	—	$	—
Restricted cash - current	—		—		—		—		11		11		—		—
Restricted cash - non-current	139		139		—		—		166		166		—		—
Short-term investments:
Corporate debt	3,399		—		3,399		—		3,127		—		3,127		—
U.S. government and agency notes	2,465		—		2,465		—		2,280		—		2,280		—
Certificates of deposit placed through an account registry service ("CDARS")	—		—		—		—		59		—		59		—
Other fixed-income securities	433		—		433		—		240		—		240		—
Long-term investments:
Equity securities	34		34		—		—		71		71		—		—

Investments presented in the table above have the same fair value as their carrying value.

Short-term investments — The short-term investments shown in the table above are classified as available-for-sale and have remaining maturities of less than two years.

Long-term investments: Equity securities — Represents equity and equity-linked securities (such as vested warrants) that make up United's investments in Azul Linhas Aéreas Brasileiras S.A. ("Azul"), Archer Aviation Inc. and Eve Holding, Inc. Equity securities at December 31, 2024 also included Mesa Air Group, Inc. ("Mesa").

On May 28, 2025, Azul announced it had entered into restructuring agreements with its key stakeholders and strategic partners, including United, to effectuate a proactive reorganization process. On November 7, 2025, United entered into an equity investment agreement with Azul and certain of Azul's subsidiaries, pursuant to which United subscribed for $100 million of Azul shares in connection with Azul's completion of the reorganization process. Consummation of United's investment is subject to the satisfaction of certain conditions precedent, including but not limited to completion of Azul's reorganization plan.

Other fair value information - The table below presents the carrying values and estimated fair values of financial instruments not presented in the tables above as of December 31 (in millions). Carrying amounts include any related discounts, premiums and issuance costs:


	2025										2024
	Carrying Amount		Fair Value								Carrying Amount		Fair Value
			Total		Level 1		Level 2		Level 3				Total		Level 1		Level 2		Level 3
Long-term debt	$	21,266	$	21,489	$	—	$	14,030	$	7,458	$	24,653	$	24,423	$	—	$	17,300	$	7,123

Fair value of the financial instruments included in the tables above was determined as follows:


Description			Fair Value Methodology
Cash and cash equivalents and Restricted cash (current and non-current)			The carrying amounts of these assets approximate fair value.
Short-term and Long-term investments			Fair value is based on (a) the trading prices of the investment or similar instruments or (b) broker quotes obtained by third-party valuation services.
Long-term debt			Fair values are based on either market prices or the discounted amount of future cash flows using our current incremental rate of borrowing for similar liabilities.

Equity Method Investments. As of December 31, 2025, United holds investments, accounted for using the equity method, with a combined carrying value of approximately $273 million. Significant equity method investments are described below:

•Republic Airways Holdings Inc. On November 25, 2025, Mesa consummated the transactions contemplated by the Agreement, Plan of Conversion and Plan of Merger, dated April 4, 2025 (the "Merger Agreement"), with Republic Airways Holdings Inc. ("Legacy Republic"). Subject to the terms and conditions of the Merger Agreement, Legacy Republic merged with and into Mesa (the "Merger"), with the Mesa legal entity continuing as the surviving corporation following the Merger and renamed "Republic Airways Holdings Inc." ("Republic"). Concurrent with the execution of the Merger Agreement, Legacy Republic, Mesa and its affiliates, and United entered into a Three Party Agreement that provided for certain actions to be taken subject to the terms and conditions therein to facilitate transactions related to the Merger, including United's commitment to facilitate, by making certain financial contributions to Mesa, Mesa's disposition of certain assets and its extinguishment of certain liabilities in exchange for United receiving additional shares of up to 6% of the total equity interests of Republic, subject to final determination within 60 days of the completion of the Merger. As of December 31, 2025, United accounted for the consideration to be received within Receivables, net on its consolidated balance sheets. On February 3, 2026, the Company and Republic reached an agreement on the remaining shares and the Company received an additional allocation of 2,744,348 shares, or approximately 5.8% of Republic, for a total ownership interest of approximately 22.3% of the issued and outstanding common stock of Republic. As of December 31, 2025, United held approximately 16.5% minority interest in Republic. As of December 31, 2024, United held a 19% minority interest in Legacy Republic and a 10% minority interest in Mesa. Republic Airways Inc. currently operates 66 regional aircraft under CPAs with United that have terms through 2037. Mesa Airlines, Inc. currently operates 60 regional aircraft under a CPA with a term through 2036.

•CommuteAir LLC. United owns a 40% minority ownership stake in CommuteAir LLC ("CommuteAir"). CommuteAir currently operates 59 regional aircraft under a CPA that has a term through 2028.

•United Airlines Ventures Sustainable Flight Fund (the "Fund"). United holds, through its corporate venture capital arm, United Airlines Ventures, Ltd., a 33% ownership interest in the Fund. The Fund is an investment vehicle designed to support start-ups developing technologies focused on decarbonizing aviation and its associated energy supply chains, including through research and production, and technologies associated with sustainable aviation fuel (SAF).

Other Investments. United has equity investments in Abra Group Limited, a multinational airline holding company, JetSuiteX, Inc., an independent air carrier doing business as JSX, as well as a number of companies with emerging technologies and sustainable solutions. None of these investments have readily determinable fair values. We account for these investments at cost less impairment, adjusted for observable price changes in orderly transactions for an identical or similar investment of the same issuer. As of December 31, 2025, the carrying value of these investments was $339 million.

Notes Receivable. As of December 31, 2025, the Company has $54 million of notes receivable, net of allowance for credit losses, the majority of which is from certain of its regional carriers. The current portions of the notes receivable are recorded in Receivables, net and the noncurrent portions are recorded in Investments in affiliates and other, net on the Company's consolidated balance sheet.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-107

Reference 3: http://www.xbrl.org/2003/role/exampleRef
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-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
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+ Details

STATEMENTS OF CONSOLIDATED STOCKHOLDERS' EQUITY (UAH) - USD ($) $ in Millions	Total	Common Stock	Additional Capital Invested	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Beginning balance (in shares) at Dec. 31, 2022		326,900,000
Beginning balance at Dec. 31, 2022	$ 6,896	$ 4	$ 8,986	$ (3,534)	$ 1,265	$ 175
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,618				2,618
Other comprehensive income (loss)	(237)					(237)
Stock-settled share-based compensation	77		77
Proceeds from exercise of stock options	1		1
Stock issued for share-based awards, net of shares withheld for tax (in shares)		1,100,000
Stock issued for share-based awards, net of shares withheld for tax	(31)		(72)	93	(52)
Ending balance (in shares) at Dec. 31, 2023		328,000,000
Ending balance at Dec. 31, 2023	9,324	$ 4	8,992	(3,441)	3,831	(62)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,149				3,149
Other comprehensive income (loss)	250					250
Stock-settled share-based compensation	135		135
Repurchase of common stock (in shares)		(3,000,000.0)
Repurchases of common stock	(162)			(162)
Share issued for settlement of Warrants (in shares)		2,000,000.0
Share issued for settlement of Warrants	0		(96)	150	(54)
Stock issued for share-based awards, net of shares withheld for tax (in shares)		900,000
Stock issued for share-based awards, net of shares withheld for tax	$ (21)		(51)	76	(46)
Ending balance (in shares) at Dec. 31, 2024	327,899,771	327,900,000
Ending balance at Dec. 31, 2024	$ 12,675	$ 4	8,980	(3,377)	6,880	188
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,353				3,353
Other comprehensive income (loss)	(140)					(140)
Stock-settled share-based compensation	$ 142		142
Repurchase of common stock (in shares)	(8,100,000)	(8,100,000)
Repurchases of common stock	$ (641)			(641)
Share issued for settlement of Warrants (in shares)		1,800,000
Share issued for settlement of Warrants	0		(99)	133	(34)
Stock issued for share-based awards, net of shares withheld for tax (in shares)		1,900,000
Stock issued for share-based awards, net of shares withheld for tax	$ (108)		(112)	111	(107)
Ending balance (in shares) at Dec. 31, 2025	323,470,682	323,500,000
Ending balance at Dec. 31, 2025	$ 15,282	$ 4	$ 8,911	$ (3,773)	$ 10,092	$ 48

CONSOLIDATED BALANCE SHEETS (UAH) (Parenthetical) - $ / shares	Dec. 31, 2025	Dec. 31, 2024
Statement of Financial Position [Abstract]
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common shares, authorized (in shares)	1,000,000,000	1,000,000,000
Common shares, issued (in shares)	323,470,682	327,899,771
Common shares, outstanding (in shares)	323,470,682	327,899,771

LEASES (Tables)

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

Components of Lease Cost

The Company's lease cost for the years ended December 31 included the following components (in millions):


	2025		2024		2023
Operating lease cost	$	894	$	855	$	925
Variable and short-term lease cost	4,003		3,592		3,028
Amortization of finance lease assets	86		62		52
Interest on finance lease liabilities	15		16		20
Sublease income	(33)		(35)		(39)
Total lease cost	$	4,964	$	4,490	$	3,986

Summary of Scheduled Future Minimum Lease Payments under Operating Leases

The table below summarizes the Company's scheduled future minimum lease payments under operating and finance leases, recorded on the balance sheet, as of December 31, 2025 (in millions):


	Operating Leases		Finance Leases
2026	$	929	$	101
2027	1,123		241
2028	941		148
2029	745		21
2030	790		2
After 2030	3,642		2
Minimum lease payments	8,170		516
Imputed interest	(2,121)		(42)
Present value of minimum lease payments	6,048		474
Less: current maturities of lease obligations	(631)		(96)
Long-term lease obligations	$	5,417	$	378

Summary of Scheduled Future Minimum Lease Payments Under Finance Leases

The table below summarizes the Company's scheduled future minimum lease payments under operating and finance leases, recorded on the balance sheet, as of December 31, 2025 (in millions):


	Operating Leases		Finance Leases
2026	$	929	$	101
2027	1,123		241
2028	941		148
2029	745		21
2030	790		2
After 2030	3,642		2
Minimum lease payments	8,170		516
Imputed interest	(2,121)		(42)
Present value of minimum lease payments	6,048		474
Less: current maturities of lease obligations	(631)		(96)
Long-term lease obligations	$	5,417	$	378

Contractual Obligation, Fiscal Year Maturity

The table below presents the Company's future contractual lease payments at December 31, 2025 under then-outstanding sale and leaseback agreements that did not qualify as a sale under the applicable accounting guidance (in millions):


	Other Financial Liabilities
2026	$	398
2027	563
2028	236
2029	235
2030	232
After 2030	2,704
	4,368
Imputed interest	(1,120)
Current maturities of other financial liabilities	(235)
Other financial liabilities	$	3,014

These amounts exclude certain variable pass-through costs such as fuel and landing fees, among others. Based on these assumptions as of December 31, 2025, our estimated future payments through the end of the terms of our CPAs are presented in the table below (in billions):


	2026		2027		2028		2029		2030		After 2030		Total
Future commitments under CPAs	$	2.9	$	2.9	$	2.8	$	2.3	$	1.9	$	6.2	$	18.9

Additional Information Related to Leases

The table below presents additional information related to our leases as of December 31:


	2025		2024
Weighted-average remaining lease term - operating leases	11 years		11 years
Weighted-average remaining lease term - finance leases	2 years		2 years
Weighted-average remaining lease term - other financial liabilities	9 years		10 years
Weighted-average discount rate - operating leases	6.0	%	5.9	%
Weighted-average discount rate - finance leases	5.3	%	5.9	%
Weighted-average interest rate - other financial liabilities	5.8	%	5.3	%

Supplemental Cash Flow Information Related to Leases

The following table presents tax payment, net of refunds, by jurisdiction for the years ended December 31 (in million):


	2025		2024		2023
Federal	$	33	$	47	$	1
State
California	13		25		(4)
Illinois	2		5		3
All other state	2		4		2
Foreign
Guatemala	3		3		3
India	3		2		1
All other foreign	6		2		1
Total	$	62	$	88	$	7

The table below presents supplemental cash flow information related to leases during the years ended December 31 (in millions):


	2025		2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$	971	$	851	$	874
Operating cash flows for finance leases	15		15		21
Financing cash flows for finance leases	174		269		311

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS - Accumulated Benefit Obligation and Projected Benefit Obligation in Excess of Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	$ 4,486	$ 4,179
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	3,821	3,617
Fair value of plan assets	$ 3,886	$ 3,443

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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+ Details

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
Cybersecurity Risk Management and Strategy Disclosure	Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	Managing cybersecurity and digital risk is a significant part of the Company's overall strategy for safely operating its business. The Company has developed a risk-based cybersecurity and digital risk management strategy. This risk-based strategy is informed by guiding principles from industry standard cybersecurity and risk management frameworks—such as those published by the National Institute of Standards and Technology—and industry-recognized practices to protect the confidentiality, integrity and availability of the Company's information technology systems and data. The Company is also subject to extensive cybersecurity regulation, including but not limited to those regulations overseen by the FAA, TSA, and DOT. This risk-based framework is also integrated into the Company's Enterprise Risk Management ("ERM") process that is subject to oversight by the Board. Cybersecurity risks are one of the key risks regularly evaluated, assessed and monitored as part of the Company's overall ERM process. As part of its risk-based strategy, the Company maintains appropriate technical and organizational measures and regularly reviews the appropriateness of those controls based on changes to the technical or regulatory environment to protect as well as minimize threats to the Company's information; the information of the Company's customers, suppliers and other third parties; the Company's information systems; the Company's business operations; and the Company's services. The Company also regularly incorporates cybersecurity awareness training into employee communications, engagement and training activities. The Company participates in various information-sharing organizations to timely share and receive threat information, thereby improving the collective defense of the aviation, retail and hospitality and other critical infrastructure sectors. The Company regularly seeks opportunities to improve its capabilities, including through cybersecurity trainings and skill-development programs for its CDR organization members. The Company utilizes a variety of third parties, as appropriate, in connection with its cybersecurity risk management. The Company employs these third-party cybersecurity companies to add capacity or expertise when necessary. Additionally, internal audits, security maturity assessments, security attestations and certifications, security testing and post-remediation reviews of the Company's cybersecurity program are periodically conducted by independent third-party service provides to identify areas of potential weakness and for continued improvement as well as to ensure ongoing compliance with regulatory requirements to which we are subject. In addition, the Company actively engages with intelligence agencies, law enforcement and advocacy and industry groups. The Company is subject to cybersecurity risks related to its business partners and third-party service providers, as further detailed under the heading "Increasing privacy, data security and cybersecurity obligations or a significant data breach may adversely affect the Company's business" included as part of the risk factor disclosures in Part I, Item 1A. of this report. To assess these risks, the Company considers the impact of third-party incidents as part of its cybersecurity incident response processes. The Company also conducts evaluations of key suppliers based on risk and seeks to incorporate appropriate security standards to address the risk. In addition, the Company regularly monitors the external cybersecurity posture of select third parties through various service providers. The Company strives to design and implement technical and organizational controls comprehensively, consistently and effectively as intended to protect the confidentiality, integrity or availability of systems and data. However, because the Company utilizes a risk-based strategy, based on professional judgment and analysis of the risks, it is possible that the Company may underappreciate or not recognize specific risks and may fail to fully implement the necessary technical and organizational controls. Moreover, even well designed and implemented security controls may not eliminate the occurrence of cybersecurity incidents. Cybersecurity Incident Management The CDR organization monitors the Company's information systems to prevent, detect, mitigate and remediate cybersecurity threats. The CDR organization uses a variety of prevention and detection tools and other resources to monitor cybersecurity vulnerabilities and identify potential cybersecurity incidents. When a cybersecurity incident is identified, the CDR organization's incident response team engages with the appropriate subject matter experts, the relevant management of impacted organization(s) and others to analyze, contain, eradicate, mitigate and recover from the incident as applicable. When appropriate, during the incident response process, the CISO, the CDR organization's leadership and the Company's Chief Legal Officer may be informed and consulted and if deemed necessary, incidents may be escalated for review by the Senior Leader Crisis Team, which consists of cross-functional leaders of the Company. The Company maintains a process in which a subgroup of the Company's Disclosure Council makes a recommendation regarding the materiality of certain cybersecurity incidents to the full Disclosure Council and, if determined to be material, subsequently to the Audit Committee. Additionally, the CDR organization has frequent operating rhythms to, among other things, review cybersecurity incidents and track the progress of cybersecurity initiatives.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	Managing cybersecurity and digital risk is a significant part of the Company's overall strategy for safely operating its business. The Company has developed a risk-based cybersecurity and digital risk management strategy. This risk-based strategy is informed by guiding principles from industry standard cybersecurity and risk management frameworks—such as those published by the National Institute of Standards and Technology—and industry-recognized practices to protect the confidentiality, integrity and availability of the Company's information technology systems and data. The Company is also subject to extensive cybersecurity regulation, including but not limited to those regulations overseen by the FAA, TSA, and DOT. This risk-based framework is also integrated into the Company's Enterprise Risk Management ("ERM") process that is subject to oversight by the Board. Cybersecurity risks are one of the key risks regularly evaluated, assessed and monitored as part of the Company's overall ERM process.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	The Company considers management of cybersecurity and digital risk as essential for enabling its success. The Audit Committee (the "Audit Committee") of the Board provides oversight of the Company's risk assessment and risk management policies and strategies with respect to significant business risks, including cybersecurity and digital risk. On a regular basis, the Audit Committee reviews reports from the Company's Chief Information Security Officer ("CISO")—as well as its Chief Information Officer, Chief Risk Officer, Chief Legal Officer and Chief Compliance Officer—regarding the Company's processes for assessing, identifying and managing of cybersecurity risks, including when applicable, notable cybersecurity threats or incidents impacting the aviation sector and the Company; results of independent third-party assessments of the Company's cybersecurity program; key metrics, capabilities, resourcing and strategy regarding the Company's cybersecurity program; and updates related to cybersecurity regulatory developments. The Chair of the Audit Committee regularly reports its activities—including those related to cybersecurity risks—to the Board and, as necessary, recommends actions to the Board that the Audit Committee deems appropriate.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Audit Committee (the "Audit Committee") of the Board provides oversight of the Company's risk assessment and risk management policies and strategies with respect to significant business risks, including cybersecurity and digital risk.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	On a regular basis, the Audit Committee reviews reports from the Company's Chief Information Security Officer ("CISO")—as well as its Chief Information Officer, Chief Risk Officer, Chief Legal Officer and Chief Compliance Officer—regarding the Company's processes for assessing, identifying and managing of cybersecurity risks, including when applicable, notable cybersecurity threats or incidents impacting the aviation sector and the Company; results of independent third-party assessments of the Company's cybersecurity program; key metrics, capabilities, resourcing and strategy regarding the Company's cybersecurity program; and updates related to cybersecurity regulatory developments. The Chair of the Audit Committee regularly reports its activities—including those related to cybersecurity risks—to the Board and, as necessary, recommends actions to the Board that the Audit Committee deems appropriate.
Cybersecurity Risk Role of Management [Text Block]	The Company considers management of cybersecurity and digital risk as essential for enabling its success. The Audit Committee (the "Audit Committee") of the Board provides oversight of the Company's risk assessment and risk management policies and strategies with respect to significant business risks, including cybersecurity and digital risk. On a regular basis, the Audit Committee reviews reports from the Company's Chief Information Security Officer ("CISO")—as well as its Chief Information Officer, Chief Risk Officer, Chief Legal Officer and Chief Compliance Officer—regarding the Company's processes for assessing, identifying and managing of cybersecurity risks, including when applicable, notable cybersecurity threats or incidents impacting the aviation sector and the Company; results of independent third-party assessments of the Company's cybersecurity program; key metrics, capabilities, resourcing and strategy regarding the Company's cybersecurity program; and updates related to cybersecurity regulatory developments. The Chair of the Audit Committee regularly reports its activities—including those related to cybersecurity risks—to the Board and, as necessary, recommends actions to the Board that the Audit Committee deems appropriate. The CISO leads the Company's Cybersecurity and Digital Risk ("CDR") organization, which oversees the Company's approach to prevent, detect, mitigate and remediate cybersecurity and digital risk. The Company's current CISO has extensive technology and risk management experience in critical infrastructure sectors, including aviation, and is certified as a boardroom Qualified Technology Expert by the Digital Directors Network. She has served on the U.S. President's National Infrastructure Advisory Council, examining and providing recommendations related to cross-sector critical infrastructure security and resilience. She currently serves on the board of directors of the Internet Security Alliance, is currently a member of the Cybersecurity Council at Airlines for America (and has served as its Chair) and is currently a member of the board of directors of the Aviation Information Sharing and Analysis Center (A-ISAC). The Company's CDR organization includes teams focusing on cyber defense, identity and digital trust, secure product solutions and aircraft cybersecurity operations. These teams include individuals with a variety of cybersecurity expertise, including expertise in penetration testing; application cybersecurity; product cybersecurity; cloud cybersecurity; infrastructure cybersecurity; cybersecurity engineering and architecture; identity and access management; vulnerability and asset management; cybersecurity threat intelligence; cybersecurity regulatory compliance; digital fraud; digital trust; incident response; insider threat assessment; and aircraft cybersecurity. The Company's senior leadership—including across the Company's safety, legal, government affairs, operations, aviation security, finance, communications and digital technology organizations as well as others when appropriate—support the CDR organization and contribute to the management of cybersecurity and digital risk by attending regular cybersecurity risk reviews and participating in cybersecurity exercises.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	The CISO leads the Company's Cybersecurity and Digital Risk ("CDR") organization, which oversees the Company's approach to prevent, detect, mitigate and remediate cybersecurity and digital risk.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	The Company's current CISO has extensive technology and risk management experience in critical infrastructure sectors, including aviation, and is certified as a boardroom Qualified Technology Expert by the Digital Directors Network. She has served on the U.S. President's National Infrastructure Advisory Council, examining and providing recommendations related to cross-sector critical infrastructure security and resilience. She currently serves on the board of directors of the Internet Security Alliance, is currently a member of the Cybersecurity Council at Airlines for America (and has served as its Chair) and is currently a member of the board of directors of the Aviation Information Sharing and Analysis Center (A-ISAC).
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	On a regular basis, the Audit Committee reviews reports from the Company's Chief Information Security Officer ("CISO")—as well as its Chief Information Officer, Chief Risk Officer, Chief Legal Officer and Chief Compliance Officer—regarding the Company's processes for assessing, identifying and managing of cybersecurity risks, including when applicable, notable cybersecurity threats or incidents impacting the aviation sector and the Company; results of independent third-party assessments of the Company's cybersecurity program; key metrics, capabilities, resourcing and strategy regarding the Company's cybersecurity program; and updates related to cybersecurity regulatory developments. The Chair of the Audit Committee regularly reports its activities—including those related to cybersecurity risks—to the Board and, as necessary, recommends actions to the Board that the Audit Committee deems appropriate. The CISO leads the Company's Cybersecurity and Digital Risk ("CDR") organization, which oversees the Company's approach to prevent, detect, mitigate and remediate cybersecurity and digital risk. The Company's current CISO has extensive technology and risk management experience in critical infrastructure sectors, including aviation, and is certified as a boardroom Qualified Technology Expert by the Digital Directors Network. She has served on the U.S. President's National Infrastructure Advisory Council, examining and providing recommendations related to cross-sector critical infrastructure security and resilience. She currently serves on the board of directors of the Internet Security Alliance, is currently a member of the Cybersecurity Council at Airlines for America (and has served as its Chair) and is currently a member of the board of directors of the Aviation Information Sharing and Analysis Center (A-ISAC). The Company's CDR organization includes teams focusing on cyber defense, identity and digital trust, secure product solutions and aircraft cybersecurity operations. These teams include individuals with a variety of cybersecurity expertise, including expertise in penetration testing; application cybersecurity; product cybersecurity; cloud cybersecurity; infrastructure cybersecurity; cybersecurity engineering and architecture; identity and access management; vulnerability and asset management; cybersecurity threat intelligence; cybersecurity regulatory compliance; digital fraud; digital trust; incident response; insider threat assessment; and aircraft cybersecurity. The Company's senior leadership—including across the Company's safety, legal, government affairs, operations, aviation security, finance, communications and digital technology organizations as well as others when appropriate—support the CDR organization and contribute to the management of cybersecurity and digital risk by attending regular cybersecurity risk reviews and participating in cybersecurity exercises.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

SHARE-BASED COMPENSATION PLANS (Tables)

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement [Abstract]

The following table provides information related to UAL's share-based compensation plan cost for the years ended December 31 (in millions):


Compensation cost
	2025		2024		2023
RSUs	$	147	$	141	$	78
Stock options	1		1		2
Total	$	148	$	142	$	80

Summary of Unearned Compensation and Weighted-Average Remaining Period to Recognize Costs

The table below summarizes UAL's unearned compensation and weighted-average remaining period to recognize costs for all outstanding share-based awards that are probable of being achieved as of December 31, 2025 (in millions, except as noted):


	Unearned Compensation		Weighted-Average Remaining Period (in years)
RSUs	$	90	1.3
Stock options	1		1.7
Total	$	91

Summary of RSU and Restricted Stock Activity

The table below summarizes UAL's RSU activity for the years ended December 31 (shares in millions):


	Liability Awards	Equity Awards
	RSUs	RSUs	Weighted- Average Grant Price
Outstanding at December 31, 2022	0.1	3.3	$	37.88
Granted	0.1	2.5	43.42

Vested	(0.1)	(1.6)	44.03
Forfeited	—	(0.1)	36.90
Outstanding at December 31, 2023	0.1	4.1	38.86
Granted	0.1	3.6	46.65
Vested	(0.1)	(2.3)	39.37
Forfeited	—	(0.3)	43.28
Outstanding at December 31, 2024	0.1	5.1	43.89
Granted	—	1.8	79.30

Vested	(0.1)	(2.9)	45.23
Forfeited	—	(0.3)	53.41
Outstanding at December 31, 2025	0.1	3.8	59.13

SPECIAL CHARGES (CREDITS) - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Restructuring and Related Activities [Abstract]
Special charge in connection with a proposed labor contract ratification payment	$ 561	$ 561	$ 0	$ 814
Net gains on sale of assets and other special charges		303	(112)	(135)
Gains on various aircraft sale-leaseback transactions		427
Other charges		125
Charges related to the repayment in full of the outstanding principal balance of debt		$ 20	$ 128	$ 11

Cover Page - USD ($) $ in Billions	12 Months Ended
Cover Page - USD ($) $ in Billions	Dec. 31, 2025	Feb. 05, 2026	Jun. 30, 2025
Document Information [Line Items]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2025
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-06033
Entity Registrant Name	United Airlines Holdings, Inc.
Entity Address, Address Line One	233 South Wacker Drive,
Entity Address, City or Town	Chicago,
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606
City Area Code	(872)
Local Phone Number	825-4000
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-2675207
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 25.6
Entity Common Stock, Shares Outstanding		323,430,419
Documents Incorporated by Reference	Certain information required by Items 10, 11, 12 and 13 of Part III of this Form 10-K is incorporated by reference for United Airlines Holdings, Inc. from its definitive proxy statement for its 2026 Annual Meeting of Stockholders.
Document Fiscal Period Focus	FY
Amendment Flag	false
Document Fiscal Year Focus	2025
Entity Central Index Key	0000100517
Common Stock
Document Information [Line Items]
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	UAL
Security Exchange Name	NASDAQ
Preferred Stock Purchase Rights
Document Information [Line Items]
Title of 12(b) Security	Preferred Stock Purchase Rights
United Airlines, Inc.
Document Information [Line Items]
Entity File Number	001-10323
Entity Registrant Name	United Airlines, Inc.
Entity Address, Address Line One	233 South Wacker Drive,
Entity Address, City or Town	Chicago,
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60606
City Area Code	(872)
Local Phone Number	825-4000
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	74-2099724
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,000
Entity Central Index Key	0000319687

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS - Defined Benefit Plan Assets Measured at Fair Value Using Unobservable Inputs (Details) - Level 3 - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	$ 314	$ 322
Actual return (loss) on plan assets:
Sold during the year	0	1
Held at year end	36	6
Purchases, sales, issuances and settlements (net)	(5)	(15)
Fair value of plan assets at end of year	$ 345	$ 314

- Definition

Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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+ Details

SHARE-BASED COMPENSATION PLANS - Information Related to Share-Based Compensation Plan Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	$ 148	$ 142	$ 80
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	147	141	78
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost	$ 1	$ 1	$ 2

- Definition

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Reference 29: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 30: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (e)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

REVENUE RECOGNITION (Tables)

12 Months Ended

Dec. 31, 2025

Revenue from Contract with Customer [Abstract]

Schedule of Operating Revenue by Components and Geographic Region

The Company further disaggregates its operating revenue by principal geographic region for the years ended December 31 as presented in the table below (in millions):


	2025		2024		2023
Domestic (U.S. and Canada)	$	35,017	$	34,067	$	32,400
Atlantic	11,647		11,097		10,982
Pacific	6,878		6,462		5,267
Latin America	5,528		5,437		5,068
Total	$	59,070	$	57,063	$	53,717

Schedule of Roll Forward of Frequent Flyer Deferred Revenue

The table below presents a roll forward of Frequent flyer deferred revenue (in millions):



	2025		2024
Balance at January 1	$	7,441	$	7,143
Miles earned	3,883		3,563
Travel miles redeemed	(3,414)		(3,150)
Non-travel miles redeemed	(133)		(115)
Balance at December 31	$	7,777	$	7,441

STATEMENTS OF CONSOLIDATED CASH FLOWS (UA) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating Activities:
Net income	$ 3,353	$ 3,149	$ 2,618
Adjustments to reconcile net income to net cash provided by (used in) operating activities -
Deferred income tax	925	935	756
Depreciation and amortization	2,939	2,928	2,671
Operating and non-operating special charges, non-cash portion	13	158	84
Unrealized (gains) losses on investments	(4)	199	(27)
Amortization of debt discount and debt issuance costs	77	166	139
Other operating activities	(62)	9	6
Changes in operating assets and liabilities -
(Increase) decrease in receivables	(297)	280	(100)
Increase in prepaids and other assets	(264)	(166)	(463)
Increase (decrease) in advance ticket sales	570	857	(851)
Increase in frequent flyer deferred revenue	336	298	468
Increase in accounts payable	674	178	572
Increase in other liabilities	171	454	1,038
Net cash provided by operating activities	8,431	9,445	6,911
Investing Activities:
Capital expenditures, net of flight equipment purchase deposit returns	(5,874)	(5,615)	(7,171)
Purchases of short-term and other investments	(7,763)	(5,809)	(9,470)
Proceeds from sale of short-term and other investments	7,284	8,661	10,519
Proceeds from sale of property and equipment	98	109	39
Other, net	(96)	3	(23)
Net cash used in investing activities	(6,350)	(2,651)	(6,106)
Financing Activities:
Proceeds from issuance of debt and other financial liabilities, net of discounts and fees	578	6,139	2,388
Payments of long-term debt, finance leases and other financial liabilities	(4,771)	(10,138)	(4,248)
Other, net	(115)	(21)	(32)
Net cash used in financing activities	(4,945)	(4,182)	(1,892)
Net increase (decrease) in cash, cash equivalents and restricted cash	(2,865)	2,612	(1,087)
Cash, cash equivalents and restricted cash at beginning of year	8,946	6,334	7,421
Cash, cash equivalents and restricted cash at end of year	6,081	8,946	6,334
Investing and Financing Activities Not Affecting Cash:
Right-of-use assets acquired or modified through operating leases	1,901	625	761
Property and equipment acquired through the issuance or modification of debt, finance leases and other financial liabilities	(25)	409	819
Operating leases converted to finance leases	417	239	295
Investment interests received in exchange for loans, goods and services	45	24	33
Cash Paid During the Period for:
Interest	1,330	1,494	1,848
Income taxes	62	88	7
United Airlines, Inc.
Operating Activities:
Net income	3,355	3,151	2,620
Adjustments to reconcile net income to net cash provided by (used in) operating activities -
Deferred income tax	925	937	757
Depreciation and amortization	2,939	2,928	2,671
Operating and non-operating special charges, non-cash portion	13	158	84
Unrealized (gains) losses on investments	(4)	199	(27)
Amortization of debt discount and debt issuance costs	77	166	139
Other operating activities	(62)	9	7
Changes in operating assets and liabilities -
(Increase) decrease in receivables	(297)	280	(100)
Increase in prepaids and other assets	(264)	(166)	(463)
Increase (decrease) in advance ticket sales	570	857	(851)
Increase in frequent flyer deferred revenue	336	298	468
Increase in accounts payable	674	178	572
Decrease in intercompany payable	(747)	(186)	(33)
Increase in other liabilities	171	453	1,035
Net cash provided by operating activities	7,685	9,262	6,879
Investing Activities:
Capital expenditures, net of flight equipment purchase deposit returns	(5,874)	(5,615)	(7,171)
Purchases of short-term and other investments	(7,763)	(5,809)	(9,470)
Proceeds from sale of short-term and other investments	7,284	8,661	10,519
Proceeds from sale of property and equipment	98	109	39
Other, net	(96)	3	(23)
Net cash used in investing activities	(6,350)	(2,651)	(6,106)
Financing Activities:
Proceeds from issuance of debt and other financial liabilities, net of discounts and fees	578	6,139	2,388
Payments of long-term debt, finance leases and other financial liabilities	(4,771)	(10,138)	(4,248)
Other, net	(6)	0	0
Net cash used in financing activities	(4,200)	(3,999)	(1,860)
Net increase (decrease) in cash, cash equivalents and restricted cash	(2,865)	2,612	(1,087)
Cash, cash equivalents and restricted cash at beginning of year	8,946	6,334	7,421
Cash, cash equivalents and restricted cash at end of year	6,081	8,946	6,334
Investing and Financing Activities Not Affecting Cash:
Right-of-use assets acquired or modified through operating leases	1,901	625	761
Property and equipment acquired through the issuance or modification of debt, finance leases and other financial liabilities	(25)	409	819
Operating leases converted to finance leases	417	239	295
Investment interests received in exchange for loans, goods and services	45	24	33
Cash Paid During the Period for:
Interest	1,330	1,494	1,848
Income taxes	$ 62	$ 88	$ 7

SHARE-BASED COMPENSATION PLANS

12 Months Ended

Dec. 31, 2025

Share-Based Payment Arrangement [Abstract]

SHARE-BASED COMPENSATION PLANS

UAL maintains share-based compensation plans for our management employees and our non-employee directors. These plans provide for grants of nonqualified stock options; incentive stock options (within the meaning of Section 422 of the Internal Revenue Code of 1986); stock appreciation rights ("SARs"); restricted stock; RSUs; performance units; cash incentive awards and other equity-based and equity-related awards. An award (other than an option, SAR or cash incentive award) may provide the holder with dividends or dividend equivalents.

Awards are recorded as either equity or a liability in the Company's consolidated balance sheets. Share-based compensation expense is recorded in Salaries and related costs.

During 2025, UAL granted share-based compensation awards pursuant to the United Airlines Holdings, Inc. 2021 Incentive Compensation Plan. These share-based compensation awards included approximately 1.8 million RSUs consisting of approximately 1.0 million time-vested RSUs and approximately 0.8 million performance-based RSUs. The time-vested RSUs vest pro-rata, a majority of which vest on February 28th of each year, over a three-year period from the date of grant. Performance-based awards vest either pro-rata, one-third each year, over a three-year period from the date of grant or all at once upon continuous employment with the Company over a three-year period. Payout under the performance-based awards can range from 0% to 300% depending on the achievement level of certain financial and strategic goals. RSUs are generally equity awards settled in stock for domestic employees and liability awards settled in cash for international employees. The cash payments are based on the 20-day average closing price of UAL common stock immediately prior to the vesting date.

The following table provides information related to UAL's share-based compensation plan cost for the years ended December 31 (in millions):


Compensation cost
	2025		2024		2023
RSUs	$	147	$	141	$	78
Stock options	1		1		2
Total	$	148	$	142	$	80


	Unearned Compensation		Weighted-Average Remaining Period (in years)
RSUs	$	90	1.3
Stock options	1		1.7
Total	$	91

Restricted stock units. The table below summarizes UAL's RSU activity for the years ended December 31 (shares in millions):


	Liability Awards	Equity Awards
	RSUs	RSUs	Weighted- Average Grant Price
Outstanding at December 31, 2022	0.1	3.3	$	37.88
Granted	0.1	2.5	43.42

Vested	(0.1)	(1.6)	44.03
Forfeited	—	(0.1)	36.90
Outstanding at December 31, 2023	0.1	4.1	38.86
Granted	0.1	3.6	46.65
Vested	(0.1)	(2.3)	39.37
Forfeited	—	(0.3)	43.28
Outstanding at December 31, 2024	0.1	5.1	43.89
Granted	—	1.8	79.30

Vested	(0.1)	(2.9)	45.23
Forfeited	—	(0.3)	53.41
Outstanding at December 31, 2025	0.1	3.8	59.13

The fair value of RSUs that vested in 2025, 2024 and 2023 was approximately $135 million, $91 million and $76 million, respectively.

As of December 31, 2025, UAL had recorded a liability of approximately $7 million related to its cash-settled RSUs. UAL paid approximately $6 million, $2 million and $3 million related to its cash-settled RSUs during 2025, 2024 and 2023, respectively.

SHARE-BASED COMPENSATION PLANS - Summary of RSU and Restricted Stock Activity (Details) - $ / shares shares in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Liability Awards - RSUs
Awards
Outstanding (in shares)	0.1	0.1	0.1
Granted (in shares)	0.0	0.1	0.1
Vested (in shares)	(0.1)	(0.1)	(0.1)
Forfeited (in shares)	0.0	0.0	0.0
Outstanding (in shares)	0.1	0.1	0.1
Equity Awards - RSUs
Awards
Outstanding (in shares)	5.1	4.1	3.3
Granted (in shares)	1.8	3.6	2.5
Vested (in shares)	(2.9)	(2.3)	(1.6)
Forfeited (in shares)	(0.3)	(0.3)	(0.1)
Outstanding (in shares)	3.8	5.1	4.1
Weighted- Average Grant Price
Outstanding (in dollars per share)	$ 43.89	$ 38.86	$ 37.88
Granted (in dollars per share)	79.30	46.65	43.42
Vested (in dollars per share)	45.23	39.37	44.03
Forfeited (in dollars per share)	53.41	43.28	36.90
Outstanding (in dollars per share)	$ 59.13	$ 43.89	$ 38.86

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS - Participation in the IAM National Pension Plan (Details) - Pension Benefits - IAM National Pension Plan - USD ($) $ in Millions		12 Months Ended
	Jan. 01, 2022	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Jan. 01, 2024
Multiemployer Plans [Line Items]
Plan length	10 years
Additional contribution as a percentage of the hourly contribution rate	2.50%
Surcharge imposed		No
United Airlines, Inc.
Multiemployer Plans [Line Items]
Funded percentage					88.00%
Contributions		$ 97	$ 95	$ 87

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/exampleRef
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Reference 5: http://www.xbrl.org/2003/role/exampleRef
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Reference 7: http://www.xbrl.org/2003/role/exampleRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147480576/715-80-50-11

Reference 10: http://www.xbrl.org/2003/role/exampleRef
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-URI https://asc.fasb.org/1943274/2147480547/715-80-55-8

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147480606/715-80-35-1

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147480576/715-80-50-5

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

COMMITMENTS, CONTINGENCIES AND GUARANTEES - Summary of Commitments Related to the Acquisition of Aircraft (Details) - Purchase commitments $ in Billions	Dec. 31, 2025 USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
2026	$ 12.6
2027	5.6
2028	7.4
2029	9.0
2030	8.7
After 2030	13.8
Total	$ 57.0

COMMITMENTS, CONTINGENCIES AND GUARANTEES (Tables)

12 Months Ended

Dec. 31, 2025

Commitments and Contingencies Disclosure [Abstract]

Summary of Purchase Commitments

The table below summarizes United's firm commitments as of December 31, 2025, which include aircraft and related spare engines, aircraft improvements and non-aircraft commitments (in billions):


	2026		2027		2028		2029		2030		After 2030		Total
Purchase commitments	$	12.6	$	5.6	$	7.4	$	9.0	$	8.7	$	13.8	$	57.0

Schedule of Estimated Future Payments of Contractual Obligation


	Other Financial Liabilities
2026	$	398
2027	563
2028	236
2029	235
2030	232
After 2030	2,704
	4,368
Imputed interest	(1,120)
Current maturities of other financial liabilities	(235)
Other financial liabilities	$	3,014


	2026		2027		2028		2029		2030		After 2030		Total
Future commitments under CPAs	$	2.9	$	2.9	$	2.8	$	2.3	$	1.9	$	6.2	$	18.9

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Dec. 31, 2025
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

LEASES

12 Months Ended

Dec. 31, 2025

Leases [Abstract]

LEASES

United leases aircraft, airport passenger terminal space, aircraft hangars and related maintenance facilities, cargo terminals, other airport facilities, other commercial real estate, office and computer equipment and vehicles, among other items. Certain of these leases include provisions for variable lease payments which are based on several factors, including, but not limited to, relative leased square footage, available seat miles, enplaned passengers, passenger facility charges, terminal equipment usage fees, departures, and airports' annual operating budgets. Due to the variable nature of these payments, they are not included in the calculation of the right-of-use asset and lease liability.

Lease Cost. The Company's lease cost for the years ended December 31 included the following components (in millions):


	2025		2024		2023
Operating lease cost	$	894	$	855	$	925
Variable and short-term lease cost	4,003		3,592		3,028
Amortization of finance lease assets	86		62		52
Interest on finance lease liabilities	15		16		20
Sublease income	(33)		(35)		(39)
Total lease cost	$	4,964	$	4,490	$	3,986

Lease Terms and Commitments. United's leases include aircraft leases for aircraft that are directly leased by United and aircraft that are operated by regional carriers on United's behalf under CPAs (but excluding aircraft owned by United) and non-aircraft leases. Aircraft operating leases relate to leases of 81 mainline and 217 regional aircraft while finance leases relate to leases of 27 mainline and 11 regional aircraft. United's aircraft leases have remaining lease terms of up to 12 years with expiration dates ranging from 2026 through 2037. Under the terms of most aircraft leases, United has the right to purchase the aircraft at the end of the lease term, in some cases at fair market value, and in others, at a percentage of cost.

In addition, United also has 63 leases of Boeing 737 MAX, Boeing 787 and Airbus A321neo aircraft under various sale-leaseback transactions. These transactions did not qualify as a sale under the applicable accounting guidance, and, as such, the associated aircraft remain on the Company's consolidated balance sheet as part of Operating property and equipment, net. The related obligations are recorded in Current maturities of long-term debt, finance leases, and other financial liabilities and Long-term debt, finance leases, and other financial liabilities. These aircraft leases have remaining lease terms of 7 years to 11 years with expiration dates ranging from 2032 through 2037.

Non-aircraft leases have remaining lease terms of 1 month to 32 years.

The table below summarizes the Company's scheduled future minimum lease payments under operating and finance leases, recorded on the balance sheet, as of December 31, 2025 (in millions):


	Operating Leases		Finance Leases
2026	$	929	$	101
2027	1,123		241
2028	941		148
2029	745		21
2030	790		2
After 2030	3,642		2
Minimum lease payments	8,170		516
Imputed interest	(2,121)		(42)
Present value of minimum lease payments	6,048		474
Less: current maturities of lease obligations	(631)		(96)
Long-term lease obligations	$	5,417	$	378


	Other Financial Liabilities
2026	$	398
2027	563
2028	236
2029	235
2030	232
After 2030	2,704
	4,368
Imputed interest	(1,120)
Current maturities of other financial liabilities	(235)
Other financial liabilities	$	3,014

In November 2024, at the request of United, the City of Houston, Texas issued special facility revenue bonds in the par amount of approximately $1.1 billion (the "IAH SFRBs") to fund a portion of the costs of construction, reconfiguration and redevelopment of portions of Terminal B at George Bush Intercontinental Airport. The IAH SFRBs have interest rates ranging from 5.25% to 5.50% per annum, payable semiannually, commencing in July 2025 through the July 2039 maturity date of the IAH SFRBs. United is accounting for the lease payments related to these IAH SFRBs as an operating lease recognized as a right-of-use asset and lease liability on the Company's balance sheet.

As of December 31, 2025, we had entered into leases with rental obligations of approximately $6.6 billion for several mainline aircraft, regional aircraft under CPAs, airport facilities, including the lease associated with the IAH SFRBs described above, and office space, none of which had commenced as of such date. These leases will commence between 2026 and 2028 with lease terms of up to 28 years.

Our lease agreements do not provide a readily determinable implicit rate nor is it available to us from our lessors. Instead, we estimate United's incremental borrowing rate based on information available at lease commencement in order to discount lease payments to present value. The table below presents additional information related to our leases as of December 31:


	2025		2024
Weighted-average remaining lease term - operating leases	11 years		11 years
Weighted-average remaining lease term - finance leases	2 years		2 years
Weighted-average remaining lease term - other financial liabilities	9 years		10 years
Weighted-average discount rate - operating leases	6.0	%	5.9	%
Weighted-average discount rate - finance leases	5.3	%	5.9	%
Weighted-average interest rate - other financial liabilities	5.8	%	5.3	%

The table below presents supplemental cash flow information related to leases during the years ended December 31 (in millions):


	2025		2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$	971	$	851	$	874
Operating cash flows for finance leases	15		15		21
Financing cash flows for finance leases	174		269		311

LEASES

Lease Cost. The Company's lease cost for the years ended December 31 included the following components (in millions):


	2025		2024		2023
Operating lease cost	$	894	$	855	$	925
Variable and short-term lease cost	4,003		3,592		3,028
Amortization of finance lease assets	86		62		52
Interest on finance lease liabilities	15		16		20
Sublease income	(33)		(35)		(39)
Total lease cost	$	4,964	$	4,490	$	3,986

Non-aircraft leases have remaining lease terms of 1 month to 32 years.

The table below summarizes the Company's scheduled future minimum lease payments under operating and finance leases, recorded on the balance sheet, as of December 31, 2025 (in millions):


	Operating Leases		Finance Leases
2026	$	929	$	101
2027	1,123		241
2028	941		148
2029	745		21
2030	790		2
After 2030	3,642		2
Minimum lease payments	8,170		516
Imputed interest	(2,121)		(42)
Present value of minimum lease payments	6,048		474
Less: current maturities of lease obligations	(631)		(96)
Long-term lease obligations	$	5,417	$	378


	Other Financial Liabilities
2026	$	398
2027	563
2028	236
2029	235
2030	232
After 2030	2,704
	4,368
Imputed interest	(1,120)
Current maturities of other financial liabilities	(235)
Other financial liabilities	$	3,014


	2025		2024
Weighted-average remaining lease term - operating leases	11 years		11 years
Weighted-average remaining lease term - finance leases	2 years		2 years
Weighted-average remaining lease term - other financial liabilities	9 years		10 years
Weighted-average discount rate - operating leases	6.0	%	5.9	%
Weighted-average discount rate - finance leases	5.3	%	5.9	%
Weighted-average interest rate - other financial liabilities	5.8	%	5.3	%

The table below presents supplemental cash flow information related to leases during the years ended December 31 (in millions):


	2025		2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$	971	$	851	$	874
Operating cash flows for finance leases	15		15		21
Financing cash flows for finance leases	174		269		311

LEASES - Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$ 971	$ 851	$ 874
Operating cash flows for finance leases	15	15	21
Financing cash flows for finance leases	$ 174	$ 269	$ 311

STATEMENTS OF CONSOLIDATED COMPREHENSIVE INCOME (LOSS) (UA) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Net income	$ 3,353	$ 3,149	$ 2,618
Other comprehensive income (loss), net of tax:
Employee benefit plans	(148)	247	(261)
Investments and other	8	3	24
Total other comprehensive income (loss), net of tax	(140)	250	(237)
Total comprehensive income, net	3,214	3,399	2,381
United Airlines, Inc.
Net income	3,355	3,151	2,620
Other comprehensive income (loss), net of tax:
Employee benefit plans	(148)	247	(261)
Investments and other	8	3	24
Total other comprehensive income (loss), net of tax	(140)	250	(237)
Total comprehensive income, net	$ 3,215	$ 3,401	$ 2,383

- Definition

+ References + Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

+ References

+ Details

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES

Basis of Presentation

United Airlines Holdings, Inc. (together with its consolidated subsidiaries, "UAL" or the "Company") is a holding company incorporated in Delaware and its wholly-owned subsidiary is United Airlines, Inc. (together with its consolidated subsidiaries, "United"). As UAL consolidates United for financial statement purposes, disclosures that relate to activities of United also apply to UAL, unless otherwise noted. United comprises substantially all of UAL's operating revenues, operating expenses, assets, liabilities and operating cash flows. When appropriate, UAL and United are named specifically for their individual contractual obligations and related disclosures and any significant differences between the operations and results of UAL and United are separately disclosed and explained.

The Company's consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). The Company consolidates variable interest entities when it determines that it is the primary beneficiary of those entities' operations. All material intercompany accounts and transactions have been eliminated in consolidation. Certain prior period amounts have been reclassified to conform to the current period presentation.

In 2025, the Company changed its rounding presentation to the nearest whole number in millions of reported amounts, except per share data or as otherwise designated. As such, certain columns and rows within the financial statements and tables presented may not sum due to rounding. Per unit amounts have been calculated from the underlying whole-dollar amounts. This change is not material and does not impact the comparability of our condensed consolidated financial statements.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in these financial statements and accompanying notes. Actual results could differ from those estimates.

Segments

Operating segments are defined as components of an enterprise with separate financial information, which are evaluated regularly by the chief operating decision maker ("CODM") and are used to assess performance and allocate resources. The Company manages its operations as one segment. Managing the Company as one segment allows management the opportunity to maximize the value of its route network and maximize the Company's consolidated financial results. The Company deploys its aircraft across its route network through a single route scheduling system to maximize its value. The Company's chief executive officer is its CODM. When making resource allocation decisions for the network, the Company's CODM evaluates flight profitability data, which considers aircraft type and route economics. The CODM assesses performance of the Company and makes resource allocation decisions based on net income as reported in the Company's statement of consolidated operations. Within the statement of consolidated operations, Other expenses represent various purchased services related to the operations of the airline such as ground handling, passenger services, food and beverage offerings, navigation fees, personnel-related costs and information technology projects. The measure of segment assets is reported on the consolidated balance sheet as Total assets.

Significant Accounting Policies

Cash and Cash Equivalents and Restricted Cash. Highly liquid investments with a maturity of three months or less on their acquisition date are classified as cash and cash equivalents. Restricted cash is classified as current or noncurrent in the consolidated balance sheets based on the expected timing of return of the assets to the Company or payment to an outside party. The restricted cash balances primarily include collateral for letters of credit and collateral associated with facility leases and certain insurance-related obligations.

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the consolidated balance sheets that sum to the total of the same such amounts shown in the statements of consolidated cash flows (in millions):


	At December 31,
	2025		2024		2023
Current assets:
Cash and cash equivalents	$	5,942	$	8,769	$	6,058
Restricted cash in Prepaid expenses and other	—		11		31
Noncurrent assets:
Restricted cash in Investments in affiliates and other, net	139		166		245
Total cash, cash equivalents and restricted cash	$	6,081	$	8,946	$	6,334

Investments. Highly liquid investments with maturities of greater than three months, but not beyond one year, at the time of purchase are classified as short-term investments and are stated at fair value. Investments with maturities beyond one year when purchased are classified as short-term investments if they are expected to be available to support the Company's short-term liquidity needs. Short-term investments in debt securities are classified as available-for-sale and are stated at fair value. Realized gains and losses on sales of these investments are reflected in Interest income in the statements of consolidated operations. Unrealized gains and losses on available-for-sale debt securities are reflected as a component of accumulated other comprehensive income (loss). Equity investments are accounted for under the equity method if we are able to exercise significant influence over the investee. Equity investments for which we do not have significant influence are recorded at fair value or at cost, if fair value is not readily determinable, with adjustments for observable changes in price or impairments (referred to as the measurement alternative). Changes in fair value are recorded in Unrealized gains (losses) on investments, net in the statements of consolidated operations. See Note 9 of this report for additional information related to investments.

Receivables. Receivables primarily consist of amounts due from credit card companies, non-airline partners, and cargo customers. We provide an allowance for credit losses expected to be incurred. We base our allowance on various factors including, but not limited to, aging, payment history, write-offs, macro-economic indicators and other credit monitoring indicators. Credit loss expense and write-offs related to receivables were not material for the years ended December 31, 2025, 2024 and 2023.

Aircraft Fuel, Spare Parts and Supplies. The Company accounts for aircraft fuel, spare parts and supplies at average cost and provides an obsolescence allowance for aircraft spare parts with an assumed residual value of 10% of original cost. Allowance for obsolescence was $830 million and $739 million at December 31, 2025 and 2024, respectively. Obsolescence expense was $119 million, $175 million, and $102 million for the years ended December 31, 2025, 2024 and 2023, respectively, and is included in Depreciation and amortization expense in the statements of consolidated operations.

Property and Equipment. The Company records additions to owned operating property and equipment at cost when acquired. Costs related to modifications that enhance the operating performance or extend the useful lives of airframes or engines are capitalized as property and equipment. We periodically receive credits in connection with the acquisition of aircraft and engines as well as contractual damages related to delays in delivery or operating performance issues. These credits are generally deferred and are recognized as a reduction to the cost of the related equipment.

Depreciation and amortization is recognized on a straight-line basis over the assets' estimated useful lives. Leasehold improvements are amortized over the shorter of the remaining term of the lease or the estimated useful life of the related asset. The estimated useful lives of property and equipment are as follows:


						Estimated Useful Life (in years)
Aircraft, spare engines and related rotable parts						25 to 30
Aircraft seats						10 to 15
Buildings						25 to 45
Other property and equipment						3 to 20
Computer software						5 to 15
Building improvements						1 to 40

Operating property and equipment, net at December 31 was as follows (in millions):


	2025		2024
Flight equipment	$	56,876	$	52,696
Other property and equipment	13,204		11,908
Purchase deposits for flight equipment	3,506		3,427
Total operating property and equipment	73,586		68,031
Less—Accumulated depreciation and amortization	(27,466)		(25,123)
Total operating property and equipment, net	$	46,121	$	42,908

As of December 31, 2025 and 2024, the Company had a carrying value of computer software of $455 million and $456 million, respectively. For the years ended December 31, 2025, 2024 and 2023, the Company's amortization expense related to computer software was $160 million, $155 million and $168 million, respectively. Aircraft, spare engines and related rotable parts were assumed to have residual values of approximately 10% of original cost, and other categories of property and equipment were assumed to have no residual value.

Leases. The Company enters into various leases as a lessee for assets including, but not limited to, airport facilities, airport gates, hangar sites, administrative offices, aircraft, and various other facilities and equipment to support its operations. The Company determines if an arrangement contains a lease at inception. A lease exists when the arrangement conveys the right to control the use of an identified asset over the lease term. Upon lease commencement, the Company records a lease liability for the obligation to make lease payments and a right-of-use asset for the right to use the underlying asset for the lease term in the consolidated balance sheets. The lease liability is measured at the commencement date based on the present value of lease payments not yet paid over the lease term, which includes extension and renewal options that are reasonably certain of being exercised, discounted using an incremental borrowing rate that reflects the term of the lease and the particular economic environment at lease commencement. The right-of-use asset is based on the lease liability, adjusted for lease prepayments, lease incentives received, and the lessee's initial direct costs. The Company does not record a right-of-use asset or lease liability for leases with an initial term of 12 months or less. Lease and non-lease components are combined for all classes of underlying assets, except for capacity purchase agreements ("CPAs") which contain embedded leases for regional aircraft. For these CPAs, the Company allocates consideration to the lease and non-lease components based on their relative standalone values. Many of the Company's leases include variable lease payments, which are not included in the measurement of the right-of-use asset and lease liability. Finance lease right-of-use assets are presented together with Operating property and equipment on the consolidated balance sheets and the related amortization is included in Depreciation and amortization expense.

Long-Lived Asset Impairments. The Company evaluates the carrying value of long-lived assets subject to amortization whenever events or changes in circumstances indicate that an impairment may exist. For purposes of this testing, the Company has generally identified the aircraft fleet type as the lowest level of identifiable cash flows for its mainline fleet and the contract level for its regional fleet under CPAs. An impairment charge is recognized when the asset's carrying value exceeds its net undiscounted future cash flows. The amount of the charge is the difference between the asset's carrying value and fair market value.

Intangible Assets. The Company has finite-lived and indefinite-lived intangible assets, including goodwill. Finite-lived intangible assets are amortized over their estimated useful lives. Goodwill and indefinite-lived intangible assets are not amortized but are assessed for impairment on an annual basis as of October 1, or more frequently if events or circumstances indicate that the asset may be impaired. The Company typically determines fair value using either a market approach or a variation of the income approach valuation techniques. These measurements include the following key assumptions: (1) forecasted revenues, expenses, margin and cash flows, (2) terminal period growth rate, (3) an estimated weighted average cost of capital, (4) asset-specific risk factor and (5) a tax rate. These assumptions are consistent with those that hypothetical market participants would use. We recognize an impairment when the fair value of an intangible asset is less than its carrying value.

For the Company's China route authority, the Company performed a quantitative assessment which involved determining the fair value of the asset and comparing that amount to the asset's carrying value. For all other intangible assets, the Company performed a qualitative assessment of whether it was more likely than not that an impairment had occurred. To determine the fair value of the China route authority, the Company used a discounted cash flow method. Key assumptions used in the valuation model included forecasted revenues, margin and an overall discount rate. These assumptions are inherently uncertain as they relate to future events and circumstances.

The following table presents information about the Company's goodwill and other intangible assets at December 31 (in millions):


	2025				2024
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Goodwill	$	4,527			$	4,527

Indefinite-lived intangible assets
China route authority	$	1,020			$	1,020
Airport slots	564				564
Tradenames and logos	593				593
Alliances	404				404
Total	$	2,581			$	2,581

Finite-lived intangible assets
Frequent flyer database	$	1,177	$	1,112	$	1,177	$	1,092
Hubs	145		144		145		138
Other	143		134		143		133
Total	$	1,465	$	1,391	$	1,465	$	1,363

Amortization expense in 2025, 2024 and 2023 was $28 million, $32 million and $37 million, respectively. Projected amortization expense in 2026, 2027, 2028, 2029 and 2030 is $18 million, $11 million, $10 million, $8 million and $7 million, respectively.

Labor Costs. The Company records expenses associated with new or amendable labor agreements when the amounts are probable and estimable. These expenses could include costs associated with retro-active lump sum cash payments made in conjunction with the ratification of labor agreements. To the extent these upfront costs are in lieu of future pay increases, they would be capitalized and amortized over the term of the labor agreements. If not, these amounts would be expensed. See Notes 12 and 13 of this report for additional information related to labor agreements.

Share-Based Compensation. The Company measures the cost of employee services received in exchange for an award of equity instruments based on the grant date fair value of the award. The resulting cost is recognized over the period during which an employee is required to provide service in exchange for the award, which is usually the vesting period. Obligations for cash-settled restricted stock units ("RSUs") are remeasured at fair value throughout the requisite service period at the close of the reporting period based upon UAL's stock price. In addition to the service requirement, certain RSUs have performance metrics that must be achieved prior to vesting. These awards are accrued based on the expected level of achievement at each reporting period. An adjustment is recorded each reporting period to adjust compensation expense based on the then current level of expected performance achievement for the performance-based awards. See Note 5 of this report for additional information on UAL's share-based compensation plans.

Maintenance and Repairs. The cost of maintenance and repairs, including the cost of minor replacements, is charged to expense as incurred, except for costs incurred under the Company's power-by-the-hour ("PBTH") engine maintenance agreements. PBTH contracts transfer certain risk to third-party service providers and fix the amount we pay per flight hour or per cycle to the service provider in exchange for maintenance and repairs under a predefined maintenance program. Under PBTH agreements, the Company recognizes expense at a level rate per engine hour, unless the level of service effort and the related payments during the period are substantially consistent, in which case the Company recognizes expense based on the amounts paid.

Advertising. Advertising costs, which are included in Other operating expenses, are expensed as incurred. Advertising expenses were $250 million, $235 million and $221 million for the years ended December 31, 2025, 2024 and 2023, respectively.

Third-Party Business. The Company has third-party business activity that includes ground handling, maintenance services, flight academy and frequent flyer award non-travel redemptions. Third-party business revenue is recorded in Other operating revenue. Expenses associated with these third-party business activities are recorded in Other operating expenses, except for non-travel mileage redemptions which are recorded to Other operating revenue.

Uncertain Income Tax Positions. The Company has recorded reserves for income taxes and associated interest that may become payable in future years. Although management believes that its positions taken on income tax matters are reasonable, the Company nevertheless established tax and interest reserves in recognition that various taxing authorities may challenge certain

of the positions taken by the Company, potentially resulting in additional liabilities for taxes and interest. The Company's uncertain tax position reserves are reviewed periodically and are adjusted as events occur that affect its estimates, such as the availability of new information, the lapsing of applicable statutes of limitation, the conclusion of tax audits, the measurement of additional estimated liability, the identification of new tax matters, the release of administrative tax guidance affecting its estimates of tax liabilities, or the rendering of relevant court decisions. The Company records penalties and interest relating to uncertain tax positions as part of income tax expense in its statements of consolidated operations. See Note 7 of this report for additional information on UAL's uncertain tax positions.

Fair Value Measurements. The Company measures certain financial assets and liabilities at fair value on a recurring basis, and certain non-financial assets and liabilities on a nonrecurring basis. The Company uses valuation techniques to measure fair value that maximize the use of observable inputs and minimize the use of unobservable inputs. These inputs are prioritized as follows:

•Level 1 - Unadjusted quoted prices in active markets for assets or liabilities identical to those to be reported at fair value

•Level 2 - Other inputs that are observable directly or indirectly, such as quoted prices for similar assets or liabilities or market-corroborated inputs

•Level 3 - Unobservable inputs for which there is little or no market data and which require us to develop our own assumptions about how market participants would price the assets or liabilities.

Recently Issued Accounting Standards

Income Taxes. In December 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") No. 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures." This ASU enhances disclosures related to income taxes, including the rate reconciliation and information on income taxes paid. The Company adopted the standard beginning with our annual reporting for fiscal year 2025. The adoption resulted in incremental disclosures. See Note 7 of this report for these disclosures.

Internal-Use Software. In September 2025, the FASB issued ASU No. 2025-06, "Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40)." The guidance removes all references to project stages throughout ASC 350-40 and clarifies the threshold entities apply to begin capitalizing costs. This guidance requires internal-use software development cost capitalization to begin when both of the following occur: management has authorized and committed to funding the software project and, it is probable the project will be completed and the software will be used to perform its intended function. The guidance is effective for the Company for annual and interim reporting periods beginning January 1, 2028; early adoption is permitted. The Company early adopted this ASU on January 1, 2026, using the prospective transition approach, which applies this guidance to new software costs incurred starting on the adoption date. The adoption will not have a material impact on the Company's consolidated financial statements.

Expense Disaggregation Disclosures. In November 2024, the FASB issued ASU No. 2024-03, "Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses." This ASU requires disclosing disaggregated information about certain income statement expense captions but does not change the presentation of expense information or expense captions reported on the face of the income statement. This ASU is effective for the Company for annual reporting periods beginning January 1, 2027 and interim reporting periods beginning January 1, 2028; early adoption is permitted. The Company is assessing the impact of this ASU and upon adoption may be required to include certain additional disclosures.

INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2025

Income Tax Disclosure [Abstract]

Schedule of Income Tax Provision Differed from Amounts Computed at the Statutory Federal Income Tax Rate

The income tax provision differed from amounts computed at the statutory federal income tax rate and consisted of the following significant components for the years ended December 31 (in millions):


	2025				2024				2023
Income tax provision at statutory rate	$	904	21.0	%	$	875	21.0	%	$	711	21.0	%
State income tax provision, net of federal income tax benefit (a)	74		1.7	%	59		1.4	%	37		1.1	%



Change in valuation allowance	(68)		(1.6)	%	27		0.6	%	(24)		(0.7)	%
Nontaxable or nondeductible items	27		0.6	%	48		1.2	%	39		1.1	%

Other, net	16		0.4	%	10		0.2	%	6		0.2	%
Income tax expense	$	953	22.1	%	$	1,019	24.4	%	$	769	22.7	%
(a) California and Colorado make up more than 50% of the state income tax expense category in 2025. California, Colorado and Illinois make up more than 50% of the state income tax expense category in 2024 and 2023

Schedule of Components of Income Tax Provision

The components of the income tax provision consisted of the following for the years ended December 31 (in millions):


	2025		2024		2023
Current:
US Federal	$	(4)	$	50	$	—
US State and Local	20		28		8
Foreign	12		6		5
Total Current	28		84		13
Deferred:
US Federal	866		898		726
US State and Local	58		37		30
Total Deferred	925		935		756
Total income tax expense:
US Federal	862		948		726
US State and Local	79		65		38
Foreign	12		6		5
Total Income Tax Expense	$	953	$	1,019	$	769

Schedule of Income Tax Payments, Net of Refunds

The following table presents tax payment, net of refunds, by jurisdiction for the years ended December 31 (in million):


	2025		2024		2023
Federal	$	33	$	47	$	1
State
California	13		25		(4)
Illinois	2		5		3
All other state	2		4		2
Foreign
Guatemala	3		3		3
India	3		2		1
All other foreign	6		2		1
Total	$	62	$	88	$	7

The table below presents supplemental cash flow information related to leases during the years ended December 31 (in millions):


	2025		2024		2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$	971	$	851	$	874
Operating cash flows for finance leases	15		15		21
Financing cash flows for finance leases	174		269		311

Schedule of Temporary Differences and Carryforwards Giving Rise to Deferred Tax Assets and Liabilities

Temporary differences and carryforwards that give rise to deferred tax assets and liabilities as of December 31 were as follows (in millions):


	UAL				United
	2025		2024		2025		2024
Deferred income tax asset (liability):
Federal and state net operating loss ("NOL") carryforwards	$	2,326	$	2,149	$	2,298	$	2,119
Deferred revenue	1,894		1,865		1,894		1,865
Operating lease liabilities	1,349		1,110		1,349		1,110
Employee benefits, including pension, postretirement and medical	701		608		701		608
Other financial liabilities	478		517		478		517
Interest expense carryforward	109		467		109		467
Other	377		565		375		565
Less: Valuation allowance	(151)		(208)		(151)		(208)
Total deferred tax assets	$	7,083	$	7,073	$	7,053	$	7,043

Depreciation	$	(7,814)	$	(7,171)	$	(7,814)	$	(7,171)
Operating lease right-of-use asset	(1,116)		(863)		(1,116)		(863)
Intangible assets	(616)		(619)		(616)		(619)
Total deferred tax liabilities	$	(9,546)	$	(8,653)	$	(9,546)	$	(8,653)
Net deferred tax asset (liability)	$	(2,463)	$	(1,580)	$	(2,493)	$	(1,610)

FAIR VALUE MEASUREMENTS, INVESTMENTS AND NOTES RECEIVABLE - Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 5,942	$ 8,769
Restricted cash - current	0	11
Restricted cash - non-current	139	166
Equity securities	34	71
Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	3,399	3,127
U.S. government and agency notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	2,465	2,280
Certificates of deposit placed through an account registry service ("CDARS")
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	59
Other fixed-income securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	433	240
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	5,942	8,769
Restricted cash - current	0	11
Restricted cash - non-current	139	166
Equity securities	34	71
Level 1 \| Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	0
Level 1 \| U.S. government and agency notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	0
Level 1 \| Certificates of deposit placed through an account registry service ("CDARS")
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	0
Level 1 \| Other fixed-income securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Restricted cash - current	0	0
Restricted cash - non-current	0	0
Equity securities	0	0
Level 2 \| Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	3,399	3,127
Level 2 \| U.S. government and agency notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	2,465	2,280
Level 2 \| Certificates of deposit placed through an account registry service ("CDARS")
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	59
Level 2 \| Other fixed-income securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	433	240
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Restricted cash - current	0	0
Restricted cash - non-current	0	0
Equity securities	0	0
Level 3 \| Corporate debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	0
Level 3 \| U.S. government and agency notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	0
Level 3 \| Certificates of deposit placed through an account registry service ("CDARS")
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	0	0
Level 3 \| Other fixed-income securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	$ 0	$ 0

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS - Reconciliation of the Change in Benefit Obligation and Plan Asset, Funded Status and Amounts Recognized in the Financial Statements (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 3,959	$ 3,752
Change in projected benefit obligation:
Projected benefit obligation at beginning of year	4,315	4,550
Service cost	127	135	$ 124
Interest cost	243	229	217
Actuarial (gain) loss	149	(460)
Benefits paid	(217)	(135)
Other	6	(4)
Projected benefit obligation at end of year	4,624	4,315	4,550
Change in plan assets:
Fair value of plan assets at beginning of year	3,601	3,599
Actual return on plan assets	357	132
Employer contributions	298	5
Benefits paid	(217)	(135)
Other	8	0
Fair value of plan assets at end of year	4,047	3,601	3,599
Funded status—Net amount recognized	(577)	(714)
Amounts recognized in the consolidated balance sheets consist of:
Noncurrent asset	23	22
Current liability	(6)	(7)
Noncurrent liability	(594)	(729)
Total liability	(577)	(714)
Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial gain	21	95
Total accumulated other comprehensive gain/income	21	95
Other Postretirement Benefits
Change in projected benefit obligation:
Projected benefit obligation at beginning of year	590	746
Service cost	6	5	4
Interest cost	31	38	42
Participant contributions	60	65
Actuarial (gain) loss	(1)	(101)
Benefits paid	(148)	(163)
Projected benefit obligation at end of year	538	590	746
Change in plan assets:
Fair value of plan assets at beginning of year	45	46
Actual return on plan assets	1	1
Employer contributions	85	96
Participant contributions	60	65
Benefits paid	(148)	(163)
Fair value of plan assets at end of year	43	45	$ 46
Funded status—Net amount recognized	(495)	(545)
Amounts recognized in the consolidated balance sheets consist of:
Current liability	(30)	(41)
Noncurrent liability	(465)	(504)
Total liability	(495)	(545)
Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial gain	354	383
Prior service credit	43	129
Total accumulated other comprehensive gain/income	$ 396	$ 512

COMMON STOCKHOLDERS' EQUITY AND PREFERRED SECURITIES	12 Months Ended
COMMON STOCKHOLDERS' EQUITY AND PREFERRED SECURITIES	Dec. 31, 2025
Equity [Abstract]
COMMON STOCKHOLDERS' EQUITY AND PREFERRED SECURITIES	COMMON STOCKHOLDERS' EQUITY AND PREFERRED SECURITIES Common stock. On October 15, 2024, the Company announced that its Board of Directors (the "Board") authorized a new share repurchase program, allowing for purchases of up to $1.5 billion in the aggregate of outstanding UAL common stock and certain Warrants (as defined below) issued in connection with the Coronavirus Aid, Relief, and Economic Security Act (the "CARES Act"), subject to a limit of $500 million in the aggregate through 2024. In 2025, the Company repurchased 8.1 million shares of UAL common stock at an average price of $78.75 for a total investment of approximately $640 million, including commissions and taxes, as part of the program. As of February 5, 2026, the dollar value of shares that may yet be purchased under the program is approximately $0.8 billion. Unless suspended or terminated earlier by the Board, this program has no set expiration date and will therefore terminate when the Company has completed all purchases authorized under the program. The specific timing and number of shares of UAL common stock or Warrants purchased will be determined by the Company's management at its discretion and will vary based on the capital needs of the business, the market price of UAL common stock, general market conditions, securities law limitations and other factors. The purchases may be effected through a combination of one or more open market and privately negotiated transactions (including under trading plans intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended (the "Exchange Act")) as well as transactions structured through investment banking institutions and other derivative transactions (including through one or more accelerated share repurchase programs). In August 2024, the Company also repurchased, through open market repurchases, following the exercise of the Warrants described below, 2,043,906 shares of UAL common stock, which was recorded as an approximately $82 million increase to Stock held in treasury, at cost. These share repurchases were executed outside of a publicly announced plan or program using cash resources. As of December 31, 2025, approximately 3.7 million shares of UAL's common stock were reserved for future issuance related to the issuance of equity-based awards under the Company's incentive compensation plans. Preferred stock. As of December 31, 2025, UAL had two shares of junior preferred stock (par value $0.01 per share) outstanding. In addition, UAL is authorized to issue 250 million shares of preferred stock (without par value) under UAL's amended and restated certificate of incorporation. Warrants. In 2020 and 2021, the Company issued to the United States Department of the Treasury (the "U.S. Treasury") warrants ("Warrants") to purchase 9,928,349 shares of UAL common stock in connection with the Payroll Support Program ("PSP") established under Division A, Title IV, Subtitle B of the CARES Act, the Payroll Support Program Extension established under Division N, Title IV, Subtitle A of the Consolidated Appropriations Act, 2021 ("PSP2"), the Payroll Support Program 3 established under Title VII, Subtitle C of the American Rescue Plan Act of 2021 ("PSP3"), and the Airline Loan Program established under Division A, Title IV, Subtitle A of the CARES Act. In August 2024, the holder of the Warrants exercised 6,414,635 of the Warrants, with an exercise price of $31.50, in a net share settlement for 2,043,906 shares of UAL common stock. In March 2025, the remaining 3,513,714 Warrants were exercised in a net share settlement for 1,801,430 shares of UAL common stock.

- Definition

The entire disclosure for equity.

+ References

+ Details

SPECIAL CHARGES (CREDITS) (Tables)

12 Months Ended

Dec. 31, 2025

Restructuring and Related Activities [Abstract]

Schedule of Components of Special Charges (Credits)

For the years ended December 31, operating and nonoperating special charges (credits) and unrealized (gains) losses on investments in the statements of consolidated operations consisted of the following (in millions):


	2025		2024		2023
Labor contract ratification bonuses	$	561	$	—	$	814
(Gains) losses on sale of assets and other special charges	(303)		112		135
Total operating special charges	259		112		949
Nonoperating unrealized (gains) losses on investments, net	(4)		199		(27)
Nonoperating debt extinguishment and modification fees	20		128		11
Total nonoperating special charges and unrealized (gains) losses on investments, net	16		327		(16)
Total operating and nonoperating special charges and unrealized (gains) losses on investments, net	274		439		933
Income tax benefit, net of valuation allowance	(136)		(54)		(214)
Total operating and nonoperating special charges and unrealized (gains) losses on investments, net of income taxes	$	138	$	385	$	719

Audit Information	12 Months Ended
Audit Information	Dec. 31, 2025
Audit Information [Abstract]
Auditor Firm ID	42
Auditor Name	Ernst & Young LLP
Auditor Location	Chicago, Illinois

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) ("AOCI")

12 Months Ended

Dec. 31, 2025

Equity [Abstract]

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) ("AOCI")

The table below presents the components of the Company's AOCI, net of tax (in millions):


	Pension and Other Postretirement Liabilities			Investments and Other		Deferred Taxes (a)		Total
Balance at December 31, 2022	$	626		$	(35)	$	(416)	$	175
Changes in value	(199)			31		38		(130)
Amounts reclassified to earnings	(138)		(b)	—		31		(107)
Balance at December 31, 2023	289			(4)		(347)		(62)
Changes in value	417			4		(94)		327
Amounts reclassified to earnings	(99)		(b)	—		22		(77)
Balance at December 31, 2024	607			—		(419)		188
Changes in value	(67)			14		12		(42)
Amounts reclassified to earnings	(123)		(b)	(3)		28		(98)
Balance at December 31, 2025	$	417		$	10	$	(379)	$	48

(a)Includes approximately $285 million of deferred income tax expense that will not be recognized in net income until the related pension and postretirement benefit obligations are fully extinguished. We consider all income sources, including other comprehensive income, in determining the amount of tax benefit allocated to results from operations. (b)This AOCI component is included in the computation of net periodic pension and other postretirement costs, specifically the following components: amortization of unrecognized (gain) loss, amortization of prior service credit and other. See Note 8 of this report for additional information on pensions and other postretirement liabilities.

COMMITMENTS, CONTINGENCIES AND GUARANTEES

12 Months Ended

Dec. 31, 2025

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS, CONTINGENCIES AND GUARANTEES

COMMITMENTS, CONTINGENCIES, AND GUARANTEES

Purchase Commitments. The table below summarizes United's firm commitments as of December 31, 2025, which include aircraft and related spare engines, aircraft improvements and non-aircraft commitments (in billions):


	2026		2027		2028		2029		2030		After 2030		Total
Purchase commitments	$	12.6	$	5.6	$	7.4	$	9.0	$	8.7	$	13.8	$	57.0

Aircraft commitments included in the table above are based on contractual scheduled aircraft deliveries. The amount and timing of these commitments could change to the extent that: (i) the Company and the aircraft manufacturers, with whom the Company has existing orders for new aircraft, agree to modify (or further modify) the contracts governing those orders, (ii) rights are exercised pursuant to the relevant agreements to cancel deliveries or modify the timing of deliveries, or (iii) the aircraft manufacturers are unable to deliver in accordance with the terms of those orders.

Regional CPAs. United has contractual relationships with various regional carriers to provide regional aircraft service branded as United Express. Under these CPAs, the Company pays the regional carriers contractually agreed fees (carrier costs) for operating these flights plus a variable rate adjustment based on agreed performance metrics, subject to annual adjustments. The fees are based on rates multiplied by specific operating statistics (e.g., block hours, departures), as well as fixed monthly amounts. Under these CPAs, the Company is also responsible for all fuel costs incurred, as well as landing fees and other costs, which are either passed through by the regional carrier to the Company without any markup or directly incurred by the Company. In some cases, the Company owns some or all of the aircraft subject to the CPA and leases such aircraft to the regional carrier. United's CPAs are for 424 regional aircraft as of December 31, 2025, and the CPAs have terms expiring through 2037. Aircraft operated under CPAs include aircraft leased directly from the regional carriers and those owned by United and operated by the regional carriers. In 2025, United amended several of its CPAs with certain of its regional carriers to amend the contractually agreed fees (carrier costs) paid to those carriers, modify the terms for certain aircraft, and modify service entry dates for certain new aircraft.

United recorded approximately $1.1 billion, $1.1 billion and $1.1 billion in expenses related to its CPAs with its regional carriers in which United is a minority shareholder, for the years ended December 31, 2025, 2024 and 2023, respectively. United had prepaid assets and accounts and notes receivables with combined carrying values of $82 million and $52 million with these companies, as of December 31, 2025 and 2024, respectively. There were $165 million and $110 million of liabilities due to these companies as of December 31, 2025 and 2024, respectively. The CPAs with these related parties were executed in the ordinary course of business.

Our future commitments under our CPAs are dependent on numerous variables, and are, therefore, difficult to predict. The most important of these variables is the number of scheduled block hours. Although we are not required to purchase a minimum number of block hours under certain of our CPAs, we have set forth below estimates of our future payments under the CPAs based on our assumptions. The actual amounts we pay to our regional operators under CPAs could differ materially from these estimates. United's estimates of its future payments under all of the CPAs do not include the portion of the underlying obligation for any aircraft leased to a regional carrier or deemed to be leased from other regional carriers and facility rent that are disclosed as part of operating leases in Note 11. For purposes of calculating these estimates, we have assumed (1) the number of block hours flown is based on our anticipated level of flight activity or at any contractual minimum utilization levels if applicable, whichever is higher, (2) that we will reduce the fleet as rapidly as contractually allowed under each CPA, (3) that aircraft utilization, stage length and load factors will remain constant, (4) that each carrier's operational performance will remain at recent historic levels and (5) an annual projected inflation rate. These amounts exclude certain variable pass-through costs such as fuel and landing fees, among others. Based on these assumptions as of December 31, 2025, our estimated future payments through the end of the terms of our CPAs are presented in the table below (in billions):


	2026		2027		2028		2029		2030		After 2030		Total
Future commitments under CPAs	$	2.9	$	2.9	$	2.8	$	2.3	$	1.9	$	6.2	$	18.9

As of December 31, 2025, United had 194 call options to purchase regional jet aircraft being operated by certain of its regional carriers with contract dates extending until 2037. These call options are exercisable upon wrongful termination or breach of contract, among other conditions.

Legal and Environmental. The Company has certain contingencies resulting from litigation and claims incident to the ordinary course of business. The Company records liabilities for legal and environmental claims when it is probable that a loss has been incurred and the amount is reasonably estimable. These amounts are recorded based on the Company's assessments of the

likelihood of their eventual disposition. As of December 31, 2025, management believes, after considering a number of factors, including (but not limited to) the information currently available, the views of legal counsel, the nature of contingencies to which the Company is subject and prior experience, that its defenses and assertions in pending legal proceedings have merit and the ultimate disposition of any pending matter will not materially affect the Company's financial position, results of operations or cash flows, except as described below.

Dispute with Rolls-Royce

In 2010, the Company entered into agreements with Rolls-Royce for engine purchases and related maintenance services for certain widebody aircraft. In 2017, the Company paid Rolls-Royce a $175 million commitment payment under those agreements. In December 2025, following a breach by Rolls-Royce, the Company issued a demand for payment representing the commitment payment plus contractual escalation. Rolls-Royce did not make the demanded payment. Rolls-Royce subsequently terminated the referenced agreements with the Company and asserted that the Company breached the agreements. The Company has disputed that Rolls-Royce properly terminated the agreements. Each of the parties contends that the other owes it damages.

The Company has taken steps to recover the amounts it believes Rolls-Royce owes the Company, along with other damages to which the Company believes it is entitled. No assurance can be given that the Company will recover the funds it believes it is owed, or to the ultimate outcome of this matter. The Company is also considering further implications of this dispute with respect to other parties. At this time, the Company has determined that a loss is neither probable nor reasonably estimable due to the preliminary nature of this matter. Additionally, the Company has not recognized any gains for this matter as of December 31, 2025. To the extent to which such amounts are determined to be realizable in the future, those gains would be recorded in the period such determination is made.

Guarantees and Indemnifications. In the normal course of business, the Company enters into numerous real estate leasing and aircraft financing arrangements that have various guarantees included in the contracts. These guarantees are primarily in the form of indemnities under which the Company typically indemnifies the lessors and any tax/financing parties against liabilities that arise out of or relate to the use, operation or maintenance of the leased premises or financed aircraft. Currently, the Company believes that any future payments required under these guarantees or indemnities would be immaterial, as most liabilities and related indemnities are covered by insurance (subject to deductibles). Additionally, certain real estate leases include indemnities for any environmental liability that may arise out of or relate to the use of the leased premises.

As of December 31, 2025, United is the guarantor of approximately $2.8 billion in aggregate principal amount of tax-exempt special facility revenue bonds and interest thereon. These bonds, which in most instances are issued by various airport municipalities, are payable solely from rentals paid under long-term agreements with the respective governing bodies. The leasing arrangements associated with these obligations are accounted for as operating leases and the related obligations are included in our lease related disclosures in Note 11. All of these bonds mature between 2026 and 2041.

As of December 31, 2025, United had $395 million of surety bonds securing various insurance-related obligations with expiration dates through 2029.

Increased Cost Provisions. In United's financing transactions that include loans in which United is the borrower, United typically agrees to reimburse lenders for any reduced returns with respect to the loans due to any change in capital requirements and, in the case of loans with respect to which the interest rate is based on SOFR, for certain other increased costs that the lenders incur in carrying these loans as a result of any change in law, subject, in most cases, to obligations of the lenders to take certain limited steps to mitigate the requirement for, or the amount of, such increased costs. At December 31, 2025, the Company had $8.6 billion of floating rate debt with remaining terms of up to approximately 12 years that are subject to these increased cost provisions. In several financing transactions with remaining terms of up to approximately 12 years and an aggregate balance of $5.4 billion, the Company bears the risk of any change in tax laws that would subject loan payments thereunder to withholding taxes, subject to customary exclusions.

Fuel Consortia. United participates in numerous fuel consortia with other air carriers at major airports to reduce the costs of fuel distribution and storage. Interline agreements govern the rights and responsibilities of the consortia members and provide for the allocation of the overall costs to operate the consortia based on usage. The consortia (and in limited cases, the participating carriers) have entered into long-term agreements to lease certain airport fuel storage and distribution facilities that are typically financed through various debt obligations. In general, each consortium lease agreement requires the consortium to make lease payments in amounts sufficient to pay the maturing principal and interest payments on these debt obligations. As of December 31, 2025, approximately $2.9 billion principal amount of such loans was secured by significant fuel facility leases in which United participates, as to which United and each of the signatory airlines has provided indirect guarantees of the debt. As of December 31, 2025, the Company's contingent exposure was approximately $513 million principal amount of such obligations based on its recent consortia participation. The Company's contingent exposure could increase if the participation of

other air carriers decreases. The guarantees will expire when these obligations are paid in full, which ranges from 2027 to 2056. The Company concluded it was not necessary to record a liability for these indirect guarantees.

Credit Card Processing Agreements. The Company has agreements with financial institutions that process customer credit card transactions for the sale of air travel and other services. Under certain of the Company's credit card processing agreements, the financial institutions in certain circumstances have the right to require that the Company maintain a reserve equal to a portion of advance ticket sales that has been processed by that financial institution, but for which the Company has not yet provided the air transportation. Such financial institutions may require additional cash or other collateral reserves to be established or additional withholding of payments related to receivables collected if the Company does not maintain certain minimum levels of unrestricted cash, cash equivalents and short-term investments (collectively, "Unrestricted Liquidity"). The Company's current level of Unrestricted Liquidity is substantially in excess of these minimum levels.

Labor Negotiations. As of December 31, 2025, United, including its subsidiaries, had approximately 113,200 employees. Approximately 83% of United's employees were represented by various U.S. labor organizations.

In May 2025, the Company reached a Tentative Agreement ("TA") with its employees represented by the Association of Flight Attendants ("AFA") regarding an agreement that became amendable in August 2021. The TA included improvements with respect to scheduling, reserve requirements and other quality of life improvements, as well as pay rate increases during its five-year term. The TA also included a provision for a one-time payment to employees represented by the AFA upon ratification. In the second quarter of 2025, the Company recorded, in Special charges, $561 million of expenses related to this ratification payment. On July 29, 2025, the Company's employees represented by the AFA voted against ratification of the TA. As of the date of this report, the Company and the AFA continue their negotiations for a revised TA.

LEASES - Future Lease Payment under Terms of Capacity Purchase Agreement (Details) $ in Millions	Dec. 31, 2025 USD ($)
Leases [Abstract]
2026	$ 398
2027	563
2028	236
2029	235
2030	232
After 2030	2,704
Total	4,368
Imputed interest	(1,120)
Less: current maturities of lease obligations	(235)
Other financial liabilities	$ 3,014

SPECIAL CHARGES (CREDITS) - Schedule of Components of Special Charges (Credits) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2025	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Restructuring and Related Activities [Abstract]
Labor contract ratification bonuses	$ 561	$ 561	$ 0	$ 814
(Gains) losses on sale of assets and other special charges		(303)	112	135
Total operating special charges		259	112	949
Nonoperating unrealized (gains) losses on investments, net		(4)	199	(27)
Nonoperating debt extinguishment and modification fees		20	128	11
Total nonoperating special charges and unrealized (gains) losses on investments, net		16	327	(16)
Total operating and nonoperating special charges and unrealized (gains) losses on investments, net		274	439	933
Income tax benefit, net of valuation allowance		(136)	(54)	(214)
Total operating and nonoperating special charges and unrealized (gains) losses on investments, net of income taxes		$ 138	$ 385	$ 719

DEBT - Narrative (Details) - USD ($)				1 Months Ended	12 Months Ended
DEBT - Narrative (Details) - USD ($)	Feb. 06, 2026	Feb. 03, 2026	Feb. 02, 2026	Jul. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Nov. 30, 2025	Jul. 07, 2025
Debt Instrument [Line Items]
Debt recorded					$ 21,383,000,000	$ 24,837,000,000
Voluntarily prepayment of outstanding principal balance of debt					4,771,000,000	10,138,000,000	$ 4,248,000,000
Unrestricted liquidity required for credit agreement					$ 2,000,000,000
Minimum ratio of appraised value of collateral for credit agreement					1.6
Secured Debt \| Aircraft Purchase Financing
Debt Instrument [Line Items]
Proceeds from issuance of debt					$ 500,000,000
Secured Debt \| Aircraft Purchase Financing \| Minimum
Debt Instrument [Line Items]
Basis spread on variable rate					5.29%
Secured Debt \| Aircraft Purchase Financing \| Maximum
Debt Instrument [Line Items]
Basis spread on variable rate					5.39%
Secured Debt \| Special Purpose Airport Facilities Revenue Bonds
Debt Instrument [Line Items]
Indebtedness incurred								$ 258,000,000
Debt recorded								$ 71,000,000
Secured Debt \| Special Purpose Airport Facilities Revenue Bonds \| Minimum
Debt Instrument [Line Items]
Interest rate								5.25%
Secured Debt \| Special Purpose Airport Facilities Revenue Bonds \| Maximum
Debt Instrument [Line Items]
Interest rate								5.50%
Secured Debt \| MileagePlus Senior Secured Notes
Debt Instrument [Line Items]
Interest rate									6.50%
Redemption of aggregate principal amount of outstanding debt									$ 1,520,000,000
Secured Debt \| Term Loan Facility
Debt Instrument [Line Items]
Voluntarily prepayment of outstanding principal balance of debt				$ 1,800,000,000
Secured Debt \| 2024 Term Loans
Debt Instrument [Line Items]
Basis spread on variable rate					2.00%
Interest rate					5.73%
Debt recorded					$ 2,061,000,000	$ 2,082,000,000
Secured Debt \| 2024 Term Loans \| Subsequent Event \| Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Basis spread on variable rate		1.75%
Secured Debt \| 2024 Term Loans \| Subsequent Event \| Other Market Rates
Debt Instrument [Line Items]
Basis spread on variable rate		0.75%
Secured Debt \| Revolving Credit Facility
Debt Instrument [Line Items]
Undrawn and available amount under revolving credit facility					$ 3,000,000,000.0
Senior Notes \| 2031 Notes \| Subsequent Event
Debt Instrument [Line Items]
Indebtedness incurred			$ 1,000,000,000
Interest rate			5.375%
Percentage of principal amount bearing fixed interest rate			100.00%
Senior Notes \| 2031 Notes \| Subsequent Event \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Redemption price percentage of principal amount			100.00%
Senior Notes \| 2031 Notes \| Subsequent Event \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Redemption price percentage of principal amount			100.00%
Senior Notes \| 2029 Notes \| Subsequent Event
Debt Instrument [Line Items]
Indebtedness incurred	$ 1,000,000,000
Interest rate	4.875%
Percentage of principal amount bearing fixed interest rate	100.00%
Senior Notes \| 2029 Notes \| Subsequent Event \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Redemption price percentage of principal amount	100.00%
Senior Notes \| 2029 Notes \| Subsequent Event \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Redemption price percentage of principal amount	100.00%

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS (Tables)

12 Months Ended

Dec. 31, 2025

Retirement Benefits [Abstract]

Reconciliation of the Change in Benefit Obligation and Plan Assets and Funded Status

The following tables set forth the reconciliation of the beginning and ending balances of the benefit obligation and plan assets, the funded status and the amounts recognized in these financial statements for the defined benefit and other postretirement plans (in millions):


	Pension Benefits
	Year Ended December 31, 2025		Year Ended December 31, 2024
Accumulated benefit obligation:	$	3,959	$	3,752

Change in projected benefit obligation:
Projected benefit obligation at beginning of year	$	4,315	$	4,550
Service cost	127		135
Interest cost	243		229
Actuarial (gain) loss	149		(460)
Benefits paid	(217)		(135)
Other	6		(4)
Projected benefit obligation at end of year	$	4,624	$	4,315

Change in plan assets:
Fair value of plan assets at beginning of year	$	3,601	$	3,599
Actual return on plan assets	357		132
Employer contributions	298		5
Benefits paid	(217)		(135)
Other	8		—
Fair value of plan assets at end of year	$	4,047	$	3,601
Funded status—Net amount recognized	$	(577)	$	(714)


	Pension Benefits
	December 31, 2025		December 31, 2024
Amounts recognized in the consolidated balance sheets consist of:
Noncurrent asset	$	23	$	22
Current liability	(6)		(7)
Noncurrent liability	(594)		(729)
Total liability	$	(577)	$	(714)

Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial gain	$	21	$	95

Total accumulated other comprehensive gain	$	21	$	95


	Other Postretirement Benefits
	Year Ended December 31, 2025		Year Ended December 31, 2024
Change in benefit obligation:
Benefit obligation at beginning of year	$	590	$	746
Service cost	6		5
Interest cost	31		38
Participant contributions	60		65
Benefits paid	(148)		(163)
Actuarial (gain) loss	(1)		(101)
Benefit obligation at end of year	$	538	$	590

Change in plan assets:
Fair value of plan assets at beginning of year	$	45	$	46
Actual return on plan assets	1		1
Employer contributions	85		96
Participant contributions	60		65
Benefits paid	(148)		(163)
Fair value of plan assets at end of year	43		45
Funded status—Net amount recognized	$	(495)	$	(545)

Amounts Recognized in Consolidated Balance Sheet and Accumulated Other Comprehensive Income (Loss)


	Other Postretirement Benefits
	December 31, 2025		December 31, 2024
Amounts recognized in the consolidated balance sheets consist of:
Current liability	$	(30)	$	(41)
Noncurrent liability	(465)		(504)
Total liability	$	(495)	$	(545)

Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial gain	$	354	$	383
Prior service credit	43		129
Total accumulated other comprehensive income	$	396	$	512

Accumulated Benefit Obligation and Projected Benefit Obligation in Excess of Plan Assets

The following information relates to all pension plans with an accumulated benefit obligation and a projected benefit obligation in excess of plan assets at December 31 (in millions):


	2025		2024
Projected benefit obligation	$	4,486	$	4,179
Accumulated benefit obligation	3,821		3,617
Fair value of plan assets	3,886		3,443

Components Of Net Periodic Benefit Cost

Net periodic benefit cost (credit) for the years ended December 31 included the following components (in millions):


	2025				2024				2023
	Pension Benefits		Other Postretirement Benefits		Pension Benefits		Other Postretirement Benefits		Pension Benefits		Other Postretirement Benefits
Service cost	$	127	$	6	$	135	$	5	$	124	$	4
Interest cost	243		31		229		38		217		42
Expected return on plan assets	(273)		(1)		(276)		(1)		(251)		(1)
Amortization of unrecognized actuarial (gain) loss	(7)		(31)		19		(26)		8		(38)
Amortization of prior service (credits) cost	—		(86)		—		(93)		1		(112)
Other	1		—		1		—		3		—
Net periodic benefit cost (credit)	$	91	$	(81)	$	108	$	(77)	$	102	$	(105)

Assumptions Used for Benefit Plans

The assumptions used for the benefit plans were as follows:


	Pension Benefits
Assumptions used to determine benefit obligations	2025		2024
Discount rate	5.62	%	5.67	%
Rate of compensation increase	3.85	%	3.85	%

Assumptions used to determine net expense
Discount rate	5.67	%	5.04	%
Expected return on plan assets	7.81	%	7.97	%
Rate of compensation increase	3.85	%	3.84	%


	Other Postretirement Benefits
Assumptions used to determine benefit obligations	2025		2024
Discount rate	5.43	%	5.70	%

Assumptions used to determine net expense
Discount rate	5.70	%	5.43	%
Expected return on plan assets	3.00	%	3.00	%
Health care cost trend rate assumed for next year	7.00	%	6.75	%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate in 2035)	4.50	%	4.50	%

Allocation of Plan Assets

Plan fiduciaries regularly review our actual asset allocation and the pension plans' investments are periodically rebalanced to our targeted allocation when considered appropriate. United's plan assets are allocated within the following guidelines:


	Percent of Total		Expected Long-Term Rate of Return
Equity securities	27 - 55	%	9	%
Fixed-income securities	33 - 61		8
Alternatives	7 - 25		7

Pension and Other Postretirement Plan Assets

The following tables present information about United's pension and other postretirement plan assets at December 31 (in millions):


	2025										2024
Pension Plan Assets:	Total		Level 1		Level 2		Level 3		Assets Measured at NAV(a)		Total		Level 1		Level 2		Level 3		Assets Measured at NAV(a)
Equity securities	$	1,421	$	108	$	4	$	184	$	1,125	$	1,231	$	92	$	4	$	150	$	985
Fixed-income securities	1,601		—		107		9		1,485		1,359		—		100		1		1,258
Alternatives	763		—		—		109		654		762		—		—		116		646
Other investments	262		8		154		1		99		249		14		153		2		80
Total	$	4,047	$	117	$	265	$	302	$	3,364	$	3,601	$	106	$	257	$	269	$	2,969
Other Postretirement Benefit Plan Assets:
Deposit administration fund	$	43	$	—	$	—	$	43	$	—	$	45	$	—	$	—	$	45	$	—

(a) In accordance with the relevant accounting standards, certain investments that are measured at fair value using the net asset value ("NAV") per share (or its equivalent) have not been classified in the fair value hierarchy. These investments are commingled funds that invest in equity securities and fixed-income instruments including bonds, debt securities, and other similar instruments issued by various U.S. and non-U.S. public- or private-sector entities. Redemption periods for these investments range from daily to semiannually.

Defined Benefit Plan Assets Measured at Fair Value Using Unobservable Inputs

The following table presents reconciliation of United's benefit plan assets measured at fair value using unobservable inputs (Level 3) for the years ended December 31 (in millions):


	2025		2024
Balance at beginning of year	$	314	$	322
Actual return (loss) on plan assets:
Sold during the year	—		1
Held at year end	36		6
Purchases, sales, issuances and settlements (net)	(5)		(15)
Balance at end of year	$	345	$	314

Estimated Future Benefit Payments

The estimated future benefit payments, net of expected participant contributions, in United's pension plans and other postretirement benefit plans for the next ten years, as of December 31, 2025, are as follows (in millions):


	Pension		Other Postretirement
2026	$	354	$	75
2027	367		66
2028	386		62
2029	383		59
2030	383		54
Years 2031 – 2035	1,927		199

Participation in the IAM National Pension Plan

United's participation in the IAM Plan for the annual period ended December 31, 2025 is outlined in the table below.


Pension Fund			IAM National Pension Fund ("IAM Fund")
EIN/ Pension Plan Number			51-6031295 — 002
Pension Protection Act Zone Status (2025 and 2024)			Critical (2025 and 2024). A plan is in "critical" status if the funded percentage is less than 65 percent. On April 17, 2019, the IAM National Pension Fund Board of Trustees voluntarily elected for the IAM Fund to be in critical status effective for the plan year beginning January 1, 2019 to strengthen the IAM Fund's financial health. The IAM Fund's funded percentage was 88.0% as of January 1, 2024.
FIP/RP Status Pending/Implemented			A 10-year Rehabilitation Plan effective, January 1, 2022, was adopted on April 17, 2019 that requires the Company to make an additional contribution of 2.5% of the hourly contribution rate, compounded annually for the length of the Rehabilitation Plan, effective June 1, 2019.
United's Contributions			$97 million, $95 million and $87 million in the years ended December 31, 2025, 2024 and 2023, respectively.
Surcharge Imposed			No
Expiration Date of Collective Bargaining Agreement			N/A

DEBT - Summary of Long-Term Debt (Details) - USD ($)	12 Months Ended
DEBT - Summary of Long-Term Debt (Details) - USD ($)	Dec. 31, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Long term debt	$ 21,383,000,000	$ 24,837,000,000
Less: unamortized debt discount, premiums and debt issuance costs	(117,000,000)	(184,000,000)
Less: current portion of long-term debt	(4,096,000,000)	(2,973,000,000)
Long-term debt, net	17,170,000,000	21,680,000,000
Secured Debt \| Equipment Notes
Debt Instrument [Line Items]
Long term debt	$ 11,708,000,000	12,983,000,000
Secured Debt \| Equipment Notes \| Minimum
Debt Instrument [Line Items]
Interest rate	2.70%
Basis spread on variable rate	0.64%
Secured Debt \| Equipment Notes \| Maximum
Debt Instrument [Line Items]
Interest rate	6.25%
Basis spread on variable rate	2.00%
Secured Debt \| 2026 and 2029 Notes
Debt Instrument [Line Items]
Long term debt	$ 4,000,000,000	4,000,000,000
Secured Debt \| 2026 and 2029 Notes \| Minimum
Debt Instrument [Line Items]
Interest rate	4.38%
Secured Debt \| 2026 and 2029 Notes \| Maximum
Debt Instrument [Line Items]
Interest rate	4.63%
Secured Debt \| 2024 Term Loans
Debt Instrument [Line Items]
Interest rate	5.73%
Long term debt	$ 2,061,000,000	2,082,000,000
Basis spread on variable rate	2.00%
Secured Debt \| MileagePlus Senior Secured Notes
Debt Instrument [Line Items]
Long term debt	$ 0	1,900,000,000
Secured Debt \| Other Secured Debt
Debt Instrument [Line Items]
Long term debt	$ 361,000,000	295,000,000
Secured Debt \| Other Secured Debt \| Minimum
Debt Instrument [Line Items]
Interest rate	4.00%
Secured Debt \| Other Secured Debt \| Maximum
Debt Instrument [Line Items]
Interest rate	5.25%
Unsecured \| Notes
Debt Instrument [Line Items]
Long term debt	$ 0	315,000,000
Unsecured \| PSP Notes
Debt Instrument [Line Items]
Interest rate	1.00%
Long term debt	$ 3,181,000,000	3,181,000,000
Basis spread on variable rate	2.00%
Unsecured \| PSP Notes \| Minimum
Debt Instrument [Line Items]
Interest rate	1.00%
Unsecured \| PSP Notes \| Maximum
Debt Instrument [Line Items]
Interest rate	5.93%
Unsecured \| PSP1 Note
Debt Instrument [Line Items]
Indebtedness incurred	$ 1,500,000,000
Term of debt	10 years
Unsecured \| PSP2 Note
Debt Instrument [Line Items]
Indebtedness incurred	$ 900,000,000
Term of debt	10 years
Unsecured \| PSP3 Note
Debt Instrument [Line Items]
Indebtedness incurred	$ 800,000,000
Term of debt	10 years
Unsecured \| Other unsecured debt
Debt Instrument [Line Items]
Interest rate	5.75%
Long term debt	$ 71,000,000	$ 81,000,000

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) plan	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Schedule Of Defined Benefit Plans And Defined Contribution Plans Disclosures [Line Items]
Number of defined benefit pension plans \| plan	2
Profit sharing and payroll tax expense	$ 704	$ 713	$ 681
IAM National Pension Plan
Schedule Of Defined Benefit Plans And Defined Contribution Plans Disclosures [Line Items]
Multi-employer plan contributions		640
United Airlines, Inc.
Schedule Of Defined Benefit Plans And Defined Contribution Plans Disclosures [Line Items]
Expense for defined contribution plans	$ 1,300	$ 1,200	$ 960
United Airlines, Inc. \| Minimum
Schedule Of Defined Benefit Plans And Defined Contribution Plans Disclosures [Line Items]
Employer contribution percentage	1.00%
United Airlines, Inc. \| Maximum
Schedule Of Defined Benefit Plans And Defined Contribution Plans Disclosures [Line Items]
Employer contribution percentage	17.00%
Pension Benefits
Schedule Of Defined Benefit Plans And Defined Contribution Plans Disclosures [Line Items]
Anticipated employer contributions	$ 259
Other Postretirement Benefits
Schedule Of Defined Benefit Plans And Defined Contribution Plans Disclosures [Line Items]
Anticipated employer contributions	$ 66

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS - Allocation of Plan Assets (Details) - Pension Benefits	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]
Expected Long-Term Rate of Return	7.81%	7.97%
United Airlines, Inc. \| Equity securities
Defined Benefit Plan Disclosure [Line Items]
Expected Long-Term Rate of Return	9.00%
United Airlines, Inc. \| Equity securities \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Percent of Total	27.00%
United Airlines, Inc. \| Equity securities \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Percent of Total	55.00%
United Airlines, Inc. \| Fixed-income securities
Defined Benefit Plan Disclosure [Line Items]
Expected Long-Term Rate of Return	8.00%
United Airlines, Inc. \| Fixed-income securities \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Percent of Total	33.00%
United Airlines, Inc. \| Fixed-income securities \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Percent of Total	61.00%
United Airlines, Inc. \| Alternatives
Defined Benefit Plan Disclosure [Line Items]
Expected Long-Term Rate of Return	7.00%
United Airlines, Inc. \| Alternatives \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Percent of Total	7.00%
United Airlines, Inc. \| Alternatives \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Percent of Total	25.00%

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) ("AOCI") (Tables)

12 Months Ended

Dec. 31, 2025

Equity [Abstract]

Schedule of Components of Accumulated Other Comprehensive Income (Loss), Net of Tax

The table below presents the components of the Company's AOCI, net of tax (in millions):


	Pension and Other Postretirement Liabilities			Investments and Other		Deferred Taxes (a)		Total
Balance at December 31, 2022	$	626		$	(35)	$	(416)	$	175
Changes in value	(199)			31		38		(130)
Amounts reclassified to earnings	(138)		(b)	—		31		(107)
Balance at December 31, 2023	289			(4)		(347)		(62)
Changes in value	417			4		(94)		327
Amounts reclassified to earnings	(99)		(b)	—		22		(77)
Balance at December 31, 2024	607			—		(419)		188
Changes in value	(67)			14		12		(42)
Amounts reclassified to earnings	(123)		(b)	(3)		28		(98)
Balance at December 31, 2025	$	417		$	10	$	(379)	$	48

(a)Includes approximately $285 million of deferred income tax expense that will not be recognized in net income until the related pension and postretirement benefit obligations are fully extinguished. We consider all income sources, including other comprehensive income, in determining the amount of tax benefit allocated to results from operations. (b)This AOCI component is included in the computation of net periodic pension and other postretirement costs, specifically the following components: amortization of unrecognized (gain) loss, amortization of prior service credit and other. See Note 8 of this report for additional information on pensions and other postretirement liabilities.

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS

12 Months Ended

Dec. 31, 2025

Retirement Benefits [Abstract]

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS

The following summarizes the significant pension and other postretirement plans of United:

Pension Plans. United maintains two primary defined benefit pension plans, one covering certain pilot employees and another covering certain U.S. non-pilot employees. Each of these plans provides benefits based on a combination of years of benefit

accruals service and an employee's final average compensation. Additional benefit accruals are frozen under the plan covering certain pilot employees and for management and administrative employees covered under the non-pilot plan. Benefit accruals for certain non-pilot employees continue. United maintains additional defined benefit pension plans, which cover certain international employees.

Other Postretirement Plans. United maintains postretirement medical programs which provide medical benefits to certain retirees and eligible dependents, as well as life insurance benefits to certain retirees participating in the plan. Benefits provided are subject to applicable contributions, co-payments, deductibles and other limits as described in the specific plan documentation.

Actuarial assumption changes are reflected as a component of the net actuarial (gain) loss. The 2025 actuarial losses were primarily related to expected pay increases for certain represented employees partially offset by asset performance. Actuarial (gains) losses are amortized over the average remaining service life of active covered employees.


	Pension Benefits
	Year Ended December 31, 2025		Year Ended December 31, 2024
Accumulated benefit obligation:	$	3,959	$	3,752

Change in projected benefit obligation:
Projected benefit obligation at beginning of year	$	4,315	$	4,550
Service cost	127		135
Interest cost	243		229
Actuarial (gain) loss	149		(460)
Benefits paid	(217)		(135)
Other	6		(4)
Projected benefit obligation at end of year	$	4,624	$	4,315

Change in plan assets:
Fair value of plan assets at beginning of year	$	3,601	$	3,599
Actual return on plan assets	357		132
Employer contributions	298		5
Benefits paid	(217)		(135)
Other	8		—
Fair value of plan assets at end of year	$	4,047	$	3,601
Funded status—Net amount recognized	$	(577)	$	(714)


	Pension Benefits
	December 31, 2025		December 31, 2024
Amounts recognized in the consolidated balance sheets consist of:
Noncurrent asset	$	23	$	22
Current liability	(6)		(7)
Noncurrent liability	(594)		(729)
Total liability	$	(577)	$	(714)

Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial gain	$	21	$	95

Total accumulated other comprehensive gain	$	21	$	95


	Other Postretirement Benefits
	Year Ended December 31, 2025		Year Ended December 31, 2024
Change in benefit obligation:
Benefit obligation at beginning of year	$	590	$	746
Service cost	6		5
Interest cost	31		38
Participant contributions	60		65
Benefits paid	(148)		(163)
Actuarial (gain) loss	(1)		(101)
Benefit obligation at end of year	$	538	$	590

Change in plan assets:
Fair value of plan assets at beginning of year	$	45	$	46
Actual return on plan assets	1		1
Employer contributions	85		96
Participant contributions	60		65
Benefits paid	(148)		(163)
Fair value of plan assets at end of year	43		45
Funded status—Net amount recognized	$	(495)	$	(545)


	Other Postretirement Benefits
	December 31, 2025		December 31, 2024
Amounts recognized in the consolidated balance sheets consist of:
Current liability	$	(30)	$	(41)
Noncurrent liability	(465)		(504)
Total liability	$	(495)	$	(545)

Amounts recognized in accumulated other comprehensive income consist of:
Net actuarial gain	$	354	$	383
Prior service credit	43		129
Total accumulated other comprehensive income	$	396	$	512

The following information relates to all pension plans with an accumulated benefit obligation and a projected benefit obligation in excess of plan assets at December 31 (in millions):


	2025		2024
Projected benefit obligation	$	4,486	$	4,179
Accumulated benefit obligation	3,821		3,617
Fair value of plan assets	3,886		3,443

Net periodic benefit cost (credit) for the years ended December 31 included the following components (in millions):


	2025				2024				2023
	Pension Benefits		Other Postretirement Benefits		Pension Benefits		Other Postretirement Benefits		Pension Benefits		Other Postretirement Benefits
Service cost	$	127	$	6	$	135	$	5	$	124	$	4
Interest cost	243		31		229		38		217		42
Expected return on plan assets	(273)		(1)		(276)		(1)		(251)		(1)
Amortization of unrecognized actuarial (gain) loss	(7)		(31)		19		(26)		8		(38)
Amortization of prior service (credits) cost	—		(86)		—		(93)		1		(112)
Other	1		—		1		—		3		—
Net periodic benefit cost (credit)	$	91	$	(81)	$	108	$	(77)	$	102	$	(105)

Service cost is recorded in Salaries and related costs on the statement of consolidated operations. All other components of net periodic benefit costs are recorded in Miscellaneous, net on the statement of consolidated operations.

The assumptions used for the benefit plans were as follows:


	Pension Benefits
Assumptions used to determine benefit obligations	2025		2024
Discount rate	5.62	%	5.67	%
Rate of compensation increase	3.85	%	3.85	%

Assumptions used to determine net expense
Discount rate	5.67	%	5.04	%
Expected return on plan assets	7.81	%	7.97	%
Rate of compensation increase	3.85	%	3.84	%


	Other Postretirement Benefits
Assumptions used to determine benefit obligations	2025		2024
Discount rate	5.43	%	5.70	%

Assumptions used to determine net expense
Discount rate	5.70	%	5.43	%
Expected return on plan assets	3.00	%	3.00	%
Health care cost trend rate assumed for next year	7.00	%	6.75	%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate in 2035)	4.50	%	4.50	%

The Company used the Society of Actuaries' PRI-2012 Private Retirement Plans Mortality Tables projected generationally using the Society of Actuaries' MP-2021 projection scale.

The Company selected the 2025 discount rate for substantially all of its plans by using a hypothetical portfolio of high-quality bonds at December 31, 2025 that would provide the necessary cash flows to match projected benefit payments.

We develop our expected long-term rate of return assumption for our defined benefit plans based on historical experience and by evaluating input from the trustee managing the plans' assets. Our expected long-term rate of return on plan assets for these plans is based on a target allocation of assets, which is based on our goal of earning the highest rate of return while maintaining risk at acceptable levels. The plans strive to have assets sufficiently diversified so that adverse or unexpected results from one security class will not have an unduly detrimental impact on the entire portfolio. Plan fiduciaries regularly review our actual asset allocation and the pension plans' investments are periodically rebalanced to our targeted allocation when considered appropriate. United's plan assets are allocated within the following guidelines:


	Percent of Total		Expected Long-Term Rate of Return
Equity securities	27 - 55	%	9	%
Fixed-income securities	33 - 61		8
Alternatives	7 - 25		7

Fair value information. Assets and liabilities measured at fair value are based on the following valuation techniques:

Market approach. Prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities.

Income approach. Techniques to convert future amounts to a single current value based on market expectations (including present value techniques, option-pricing and excess earnings models).

The following tables present information about United's pension and other postretirement plan assets at December 31 (in millions):


	2025										2024
Pension Plan Assets:	Total		Level 1		Level 2		Level 3		Assets Measured at NAV(a)		Total		Level 1		Level 2		Level 3		Assets Measured at NAV(a)
Equity securities	$	1,421	$	108	$	4	$	184	$	1,125	$	1,231	$	92	$	4	$	150	$	985
Fixed-income securities	1,601		—		107		9		1,485		1,359		—		100		1		1,258
Alternatives	763		—		—		109		654		762		—		—		116		646
Other investments	262		8		154		1		99		249		14		153		2		80
Total	$	4,047	$	117	$	265	$	302	$	3,364	$	3,601	$	106	$	257	$	269	$	2,969
Other Postretirement Benefit Plan Assets:
Deposit administration fund	$	43	$	—	$	—	$	43	$	—	$	45	$	—	$	—	$	45	$	—

Equity and Fixed-Income. Equity securities include investments in both developed market and emerging market equity securities. Fixed-income securities include primarily U.S. and non-U.S. government fixed-income securities and non-U.S. corporate fixed-income securities, as well as securitized debt securities.

Deposit Administration Fund. This investment is a stable value investment product structured to provide investment income.

Alternatives. Alternative investments consist primarily of investments in hedge funds, real estate and private equity interests.

Other investments. Other investments consist of primarily cash equivalents, as well as insurance contracts.

The following table presents reconciliation of United's benefit plan assets measured at fair value using unobservable inputs (Level 3) for the years ended December 31 (in millions):


	2025		2024
Balance at beginning of year	$	314	$	322
Actual return (loss) on plan assets:
Sold during the year	—		1
Held at year end	36		6
Purchases, sales, issuances and settlements (net)	(5)		(15)
Balance at end of year	$	345	$	314

Funding requirements for tax-qualified defined benefit pension plans are determined by government regulations. The Company expects to make required contributions to its tax-qualified defined benefit pension plans in 2026. In 2026, anticipated employer

contributions to all of United's pension and postretirement plans are at least $259 million and approximately $66 million, respectively.


	Pension		Other Postretirement
2026	$	354	$	75
2027	367		66
2028	386		62
2029	383		59
2030	383		54
Years 2031 – 2035	1,927		199

Defined Contribution Plans. United offers several defined contribution plans to its employees. Depending upon the employee group, employer contributions consist of matching contributions and/or non-elective employer contributions. United's employer contribution percentages to its primary 401(k) defined contribution plans vary from 1% to 17% of eligible earnings depending on the terms of each plan. United recorded expenses for its primary 401(k) defined contribution plans of $1.3 billion, $1.2 billion and $960 million in the years ended December 31, 2025, 2024 and 2023, respectively, within Salaries and related costs in the Company's statements of consolidated operations.

Multi-Employer Plans. United contributes to the IAM National Pension Plan ("IAM Plan") under the terms of collective bargaining agreements that cover certain of its employees represented by the International Association of Machinists and Aerospace Workers (the "IAM"). The IAM Plan provides for retirement, death and/or termination benefits for eligible employees within the applicable collective bargaining units, based on specific eligibility and participation requirements, vesting periods and benefit formulas. The risks of participating in these multi-employer plans are different from single-employer plans, as United may be subject to additional risks that others do not meet their obligations, which in certain circumstances could revert to United, or if a withdrawal from a multi-employer plan occurs for United.

The IAM Plan reported $640 million of employer contributions for the year ended December 31, 2024. For 2024, the Company's contributions to the IAM Plan represented more than 5% of total contributions to the IAM Plan. The 2025 information is not available as the applicable Form 5500 is not final for the plan year. United's participation in the IAM Plan for the annual period ended December 31, 2025 is outlined in the table below.


Pension Fund			IAM National Pension Fund ("IAM Fund")
EIN/ Pension Plan Number			51-6031295 — 002
Pension Protection Act Zone Status (2025 and 2024)			Critical (2025 and 2024). A plan is in "critical" status if the funded percentage is less than 65 percent. On April 17, 2019, the IAM National Pension Fund Board of Trustees voluntarily elected for the IAM Fund to be in critical status effective for the plan year beginning January 1, 2019 to strengthen the IAM Fund's financial health. The IAM Fund's funded percentage was 88.0% as of January 1, 2024.
FIP/RP Status Pending/Implemented			A 10-year Rehabilitation Plan effective, January 1, 2022, was adopted on April 17, 2019 that requires the Company to make an additional contribution of 2.5% of the hourly contribution rate, compounded annually for the length of the Rehabilitation Plan, effective June 1, 2019.
United's Contributions			$97 million, $95 million and $87 million in the years ended December 31, 2025, 2024 and 2023, respectively.
Surcharge Imposed			No
Expiration Date of Collective Bargaining Agreement			N/A

Profit Sharing. Substantially all of our employees are eligible to participate in our profit sharing plan. Under the plan, for each year in which our adjusted pre-tax profit (which is calculated as pre-tax profit, excluding unusual, special or non-recurring charges, profit sharing expense and share-based compensation) exceeds a certain amount, a specified portion of that profit will be distributed to eligible employees. The Company recorded profit sharing and related payroll tax expense of $704 million,

$713 million and $681 million in 2025, 2024 and 2023, respectively. Profit sharing expense is recorded as a component of Salaries and related costs in the Company's statements of consolidated operations.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
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-Name Accounting Standards Codification
-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147480126/715-20-S99-2

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/exampleRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
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-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
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+ Details

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Information about Goodwill and Other Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 4,527	$ 4,527
Indefinite-lived intangible assets
Gross Carrying Amount	2,581	2,581
Finite-lived intangible assets
Gross Carrying Amount	1,465	1,465
Accumulated Amortization	1,391	1,363
Frequent flyer database
Finite-lived intangible assets
Gross Carrying Amount	1,177	1,177
Accumulated Amortization	1,112	1,092
Hubs
Finite-lived intangible assets
Gross Carrying Amount	145	145
Accumulated Amortization	144	138
Other
Finite-lived intangible assets
Gross Carrying Amount	143	143
Accumulated Amortization	134	133
China route authority
Indefinite-lived intangible assets
Gross Carrying Amount	1,020	1,020
Airport slots
Indefinite-lived intangible assets
Gross Carrying Amount	564	564
Tradenames and logos
Indefinite-lived intangible assets
Gross Carrying Amount	593	593
Alliances
Indefinite-lived intangible assets
Gross Carrying Amount	$ 404	$ 404

EARNINGS PER SHARE (Tables)

12 Months Ended

Dec. 31, 2025

Earnings Per Share [Abstract]

Schedule of Computation of Basic and Diluted Earnings Per Share

The following table shows the computation of UAL's basic and diluted earnings per share, the latter of which uses the treasury stock method to calculate the dilutive effect of UAL's potential common stock, for the years ended December 31 (in millions, except per share amounts):


	2025		2024		2023
Earnings available to common stockholders	$	3,353	$	3,149	$	2,618

Basic weighted-average shares outstanding	324.9		328.6		327.8
Dilutive effect of stock Warrants (a)	0.3		1.7		2.2
Dilutive effect of employee stock awards	3.3		2.9		1.9
Diluted weighted-average shares outstanding	328.5		333.2		331.9

Earnings per share, basic	$	10.32	$	9.58	$	7.98
Earnings per share, diluted	$	10.20	$	9.45	$	7.89

Potentially dilutive securities (b)
Stock Warrants (a)	—		—		1.5
Employee stock awards	0.3		0.3		0.6

(a) See Note 3 of this report for additional information on these Warrants.

(b) Weighted-average potentially dilutive securities outstanding are excluded from the computation of diluted earnings per share because the securities would have an antidilutive effect.

COMMITMENTS, CONTINGENCIES AND GUARANTEES - Schedule of Estimated Future payments of Contractual Obligation (Details) - Future commitments under CPAs $ in Billions	Dec. 31, 2025 USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
2026	$ 2.9
2027	2.9
2028	2.8
2029	2.3
2030	1.9
After 2030	6.2
Total	$ 18.9

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS - Estimated Future Benefit Payments (Details) $ in Millions	Dec. 31, 2025 USD ($)
Pension
Pension and Other Postretirement
2026	$ 354
2027	367
2028	386
2029	383
2030	383
Years 2031 – 2035	1,927
Other Postretirement
Pension and Other Postretirement
2026	75
2027	66
2028	62
2029	59
2030	54
Years 2031 – 2035	$ 199

FAIR VALUE MEASUREMENTS, INVESTMENTS AND NOTES RECEIVABLE (Tables)

12 Months Ended

Dec. 31, 2025

Fair Value Disclosures [Abstract]

Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis

The table below presents the fair value of financial assets and liabilities measured at fair value, based on the inputs described in Note 1, on a recurring basis in the Company's financial statements as of December 31 (in millions):


	2025								2024
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3
Cash and cash equivalents	$	5,942	$	5,942	$	—	$	—	$	8,769	$	8,769	$	—	$	—
Restricted cash - current	—		—		—		—		11		11		—		—
Restricted cash - non-current	139		139		—		—		166		166		—		—
Short-term investments:
Corporate debt	3,399		—		3,399		—		3,127		—		3,127		—
U.S. government and agency notes	2,465		—		2,465		—		2,280		—		2,280		—
Certificates of deposit placed through an account registry service ("CDARS")	—		—		—		—		59		—		59		—
Other fixed-income securities	433		—		433		—		240		—		240		—
Long-term investments:
Equity securities	34		34		—		—		71		71		—		—

Schedule of Carrying Values and Estimated Fair Values of Financial Instruments

The table below presents the carrying values and estimated fair values of financial instruments not presented in the tables above as of December 31 (in millions). Carrying amounts include any related discounts, premiums and issuance costs:


	2025										2024
	Carrying Amount		Fair Value								Carrying Amount		Fair Value
			Total		Level 1		Level 2		Level 3				Total		Level 1		Level 2		Level 3
Long-term debt	$	21,266	$	21,489	$	—	$	14,030	$	7,458	$	24,653	$	24,423	$	—	$	17,300	$	7,123

Schedule of Fair Value Measurement Inputs and Valuation Techniques

Fair value of the financial instruments included in the tables above was determined as follows:


Description			Fair Value Methodology
Cash and cash equivalents and Restricted cash (current and non-current)			The carrying amounts of these assets approximate fair value.
Short-term and Long-term investments			Fair value is based on (a) the trading prices of the investment or similar instruments or (b) broker quotes obtained by third-party valuation services.
Long-term debt			Fair values are based on either market prices or the discounted amount of future cash flows using our current incremental rate of borrowing for similar liabilities.

COMMON STOCKHOLDERS' EQUITY AND PREFERRED SECURITIES (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended		12 Months Ended
	Mar. 31, 2025	Aug. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Feb. 05, 2026	Oct. 15, 2024	Dec. 31, 2021	Dec. 31, 2020
Class of Warrant or Right [Line Items]
Aggregate value of outstanding shares authorized for purchase under share repurchase program						$ 1,500
Aggregate limit value of outstanding shares authorized for purchase in fiscal year under share repurchase program				$ 500
Number of shares repurchased (in shares)		2,043,906	8,100,000
Average price per share of shares repurchased (in dollars per share)			$ 78.75
Value of shares repurchased, including commissions and tax			$ 640
Value of shares repurchased		$ 82	$ 641	$ 162
Common stock reserved for future issuance (in shares)			3,700,000
Junior preferred stock outstanding (in shares)			2
Junior preferred stock par value per share (in dollars per share)			$ 0.01
Preferred stock authorized to issue (in shares)			250,000,000
Exercise price of warrants (in dollars per share)		$ 31.50
Number of shares issued in settlement of warrants exercised (in shares)	1,801,430	2,043,906
Common Stock
Class of Warrant or Right [Line Items]
Number of shares purchased as a result of warrants exercised (in shares)	3,513,714	6,414,635					9,928,349	9,928,349
Subsequent Event
Class of Warrant or Right [Line Items]
Value of authorized shares yet to be purchased under share repurchase program					$ 800

INCOME TAXES - Schedule of Components of Income Tax Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Current:
US Federal	$ (4)	$ 50	$ 0
US State and Local	20	28	8
Foreign	12	6	5
Total Current	28	84	13
Deferred:
US Federal	866	898	726
US State and Local	58	37	30
Total Deferred	925	935	756
Total income tax expense:
US Federal	862	948	726
US State and Local	79	65	38
Foreign	12	6	5
Income tax expense	$ 953	$ 1,019	$ 769

STATEMENTS OF CONSOLIDATED STOCKHOLDERS' EQUITY (UA) - USD ($) $ in Millions	Total	Additional Capital Invested	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	United Airlines, Inc.	United Airlines, Inc. Additional Capital Invested	United Airlines, Inc. Retained Earnings	United Airlines, Inc. Accumulated Other Comprehensive Income (Loss)	United Airlines, Inc. (Receivable from) Payable to Related Parties, Net
Beginning balance at Dec. 31, 2022	$ 6,896	$ 8,986	$ 1,265	$ 175	$ 6,865	$ 403	$ 3,716	$ 175	$ 2,571
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,618		2,618		2,620		2,620
Other comprehensive income (loss)	(237)			(237)	(237)			(237)
Stock-settled share-based compensation	77	77			77	77
Other					(31)	2			(33)
Ending balance at Dec. 31, 2023	9,324	8,992	3,831	(62)	9,294	482	6,336	(62)	2,538
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,149		3,149		3,151		3,151
Other comprehensive income (loss)	250			250	250			250
Stock-settled share-based compensation	135	135			135	135
Impact of UAL share repurchase					(162)				(162)
Other					(24)				(24)
Ending balance at Dec. 31, 2024	12,675	8,980	6,880	188	12,644	617	9,487	188	2,352
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	3,353		3,353		3,355		3,355
Other comprehensive income (loss)	(140)			(140)	(140)			(140)
Stock-settled share-based compensation	142	142			142	142
Impact of UAL share repurchase					(637)				(637)
Other					(110)				(110)
Ending balance at Dec. 31, 2025	$ 15,282	$ 8,911	$ 10,092	$ 48	$ 15,254	$ 760	$ 12,842	$ 48	$ 1,604

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

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- Definition

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

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REVENUE RECOGNITION - Schedule of Operating Revenue by Geographic Region (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Total operating revenue	$ 59,070	$ 57,063	$ 53,717
Domestic (U.S. and Canada)
Disaggregation of Revenue [Line Items]
Total operating revenue	35,017	34,067	32,400
Atlantic
Disaggregation of Revenue [Line Items]
Total operating revenue	11,647	11,097	10,982
Pacific
Disaggregation of Revenue [Line Items]
Total operating revenue	6,878	6,462	5,267
Latin America
Disaggregation of Revenue [Line Items]
Total operating revenue	$ 5,528	$ 5,437	$ 5,068

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FAIR VALUE MEASUREMENTS, INVESTMENTS AND NOTES RECEIVABLE - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($) aircraft	Feb. 03, 2026 shares	Nov. 07, 2025 USD ($)	Apr. 04, 2025	Dec. 31, 2024
Fair Value [Line Items]
Equity method investments	$ 273
Carrying amount of loan receivable	$ 54
Republic
Fair Value [Line Items]
Number of aircraft operated \| aircraft	66
Mesa Airlines
Fair Value [Line Items]
Number of aircraft operated \| aircraft	60
CommuteAir
Fair Value [Line Items]
Number of aircraft operated \| aircraft	59
Republic
Fair Value [Line Items]
Ownership stake	16.50%
Republic \| Subsequent Event
Fair Value [Line Items]
Equity interests exchanged for commitment to facilitate merger transaction		5.80%
Equity interests received for commitment to facilitate merger transaction (in shares) \| shares		2,744,348
Ownership stake		22.30%
Republic \| Maximum
Fair Value [Line Items]
Equity interests exchanged for commitment to facilitate merger transaction				6.00%
Legacy Republic
Fair Value [Line Items]
Ownership stake					19.00%
Mesa
Fair Value [Line Items]
Ownership stake					10.00%
CommuteAir
Fair Value [Line Items]
Ownership stake	40.00%
Fund
Fair Value [Line Items]
Ownership stake	33.00%
Other Investments
Fair Value [Line Items]
Carrying value of other investment	$ 339
Azul
Fair Value [Line Items]
Subscribed equity investments in connection with reorganization process			$ 100
Corporate Debt
Fair Value [Line Items]
Available for sale investment maturity term (less than)	2 years

EARNINGS PER SHARE

12 Months Ended

Dec. 31, 2025

Earnings Per Share [Abstract]

EARNINGS PER SHARE


	2025		2024		2023
Earnings available to common stockholders	$	3,353	$	3,149	$	2,618

Basic weighted-average shares outstanding	324.9		328.6		327.8
Dilutive effect of stock Warrants (a)	0.3		1.7		2.2
Dilutive effect of employee stock awards	3.3		2.9		1.9
Diluted weighted-average shares outstanding	328.5		333.2		331.9

Earnings per share, basic	$	10.32	$	9.58	$	7.98
Earnings per share, diluted	$	10.20	$	9.45	$	7.89

Potentially dilutive securities (b)
Stock Warrants (a)	—		—		1.5
Employee stock awards	0.3		0.3		0.6

(a) See Note 3 of this report for additional information on these Warrants.

(b) Weighted-average potentially dilutive securities outstanding are excluded from the computation of diluted earnings per share because the securities would have an antidilutive effect.

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Operating Property and Equipment, net (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Flight equipment	$ 56,876	$ 52,696
Other property and equipment	13,204	11,908
Purchase deposits for flight equipment	3,506	3,427
Total operating property and equipment	73,586	68,031
Less—Accumulated depreciation and amortization	(27,466)	(25,123)
Total operating property and equipment, net	$ 46,121	$ 42,908
Aircraft, spare engines and related rotable parts \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	25 years
Aircraft, spare engines and related rotable parts \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	30 years
Aircraft seats \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	10 years
Aircraft seats \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	15 years
Buildings \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	25 years
Buildings \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	45 years
Other property and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	3 years
Other property and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	20 years
Computer software \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	5 years
Computer software \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	15 years
Building improvements \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	1 year
Building improvements \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (in years)	40 years

DEBT - Schedule of Contractual Principal Payments (Details) - UAL and United $ in Millions	Dec. 31, 2025 USD ($)
Debt Instrument [Line Items]
2026	$ 4,096
2027	2,011
2028	1,839
2029	2,932
2030	2,467
After 2030	8,039
Total	$ 21,383

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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+ Details

FAIR VALUE MEASUREMENTS, INVESTMENTS AND NOTES RECEIVABLE - Schedule of Carrying Values and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Amount	$ 21,266	$ 24,653
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	21,489	24,423
Fair Value \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	0	0
Fair Value \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	14,030	17,300
Fair Value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 7,458	$ 7,123

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

+ Details

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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+ Details

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2025

Accounting Policies [Abstract]

Reconciliation of Cash, Cash Equivalents and Restricted Cash


	At December 31,
	2025		2024		2023
Current assets:
Cash and cash equivalents	$	5,942	$	8,769	$	6,058
Restricted cash in Prepaid expenses and other	—		11		31
Noncurrent assets:
Restricted cash in Investments in affiliates and other, net	139		166		245
Total cash, cash equivalents and restricted cash	$	6,081	$	8,946	$	6,334

Reconciliation of Cash, Cash Equivalents and Restricted Cash


	At December 31,
	2025		2024		2023
Current assets:
Cash and cash equivalents	$	5,942	$	8,769	$	6,058
Restricted cash in Prepaid expenses and other	—		11		31
Noncurrent assets:
Restricted cash in Investments in affiliates and other, net	139		166		245
Total cash, cash equivalents and restricted cash	$	6,081	$	8,946	$	6,334

Operating Property and Equipment, Net

The estimated useful lives of property and equipment are as follows:


						Estimated Useful Life (in years)
Aircraft, spare engines and related rotable parts						25 to 30
Aircraft seats						10 to 15
Buildings						25 to 45
Other property and equipment						3 to 20
Computer software						5 to 15
Building improvements						1 to 40

Operating property and equipment, net at December 31 was as follows (in millions):


	2025		2024
Flight equipment	$	56,876	$	52,696
Other property and equipment	13,204		11,908
Purchase deposits for flight equipment	3,506		3,427
Total operating property and equipment	73,586		68,031
Less—Accumulated depreciation and amortization	(27,466)		(25,123)
Total operating property and equipment, net	$	46,121	$	42,908

Information about Goodwill and Other Intangible Assets

The following table presents information about the Company's goodwill and other intangible assets at December 31 (in millions):


	2025				2024
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Goodwill	$	4,527			$	4,527

Indefinite-lived intangible assets
China route authority	$	1,020			$	1,020
Airport slots	564				564
Tradenames and logos	593				593
Alliances	404				404
Total	$	2,581			$	2,581

Finite-lived intangible assets
Frequent flyer database	$	1,177	$	1,112	$	1,177	$	1,092
Hubs	145		144		145		138
Other	143		134		143		133
Total	$	1,465	$	1,391	$	1,465	$	1,363

LEASES - Narrative (Details) $ in Billions	12 Months Ended
LEASES - Narrative (Details) $ in Billions	Dec. 31, 2025 USD ($) aircraft	Nov. 30, 2024 USD ($)
Lessee, Lease, Description [Line Items]
Number of aircraft leases under various sale-leaseback transactions	63
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current maturities of long-term debt, finance leases, and other financial liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt, finance leases, and other financial liabilities
Lease terms of additional leases that have not yet commenced (up to)	28 years
Operating And Financing Leases, Lease Not Yet Commenced
Lessee, Lease, Description [Line Items]
Amount of leases that have not yet commenced \| $	$ 6.6
SFRB \| City Of Houston, Texas
Lessee, Lease, Description [Line Items]
Indebtedness incurred \| $		$ 1.1
Maximum
Lessee, Lease, Description [Line Items]
Term of sale-leaseback transactions	11 years
Maximum \| SFRB \| City Of Houston, Texas
Lessee, Lease, Description [Line Items]
Interest rate		5.50%
Minimum
Lessee, Lease, Description [Line Items]
Term of sale-leaseback transactions	7 years
Minimum \| SFRB \| City Of Houston, Texas
Lessee, Lease, Description [Line Items]
Interest rate		5.25%
Mainline Aircraft
Lessee, Lease, Description [Line Items]
Number of aircraft subject to operating leases	81
Number of aircraft subject to finance leases	27
Mainline Aircraft \| Maximum
Lessee, Lease, Description [Line Items]
Term of operating leases	12 years
Regional Aircraft
Lessee, Lease, Description [Line Items]
Number of aircraft subject to operating leases	217
Number of aircraft subject to finance leases	11
Non-Aircraft \| Maximum
Lessee, Lease, Description [Line Items]
Term of operating leases	32 years
Non-Aircraft \| Minimum
Lessee, Lease, Description [Line Items]
Term of operating leases	1 month

DEBT (Tables)

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

Summary of Long-Term Debt


(In millions)	Maturity Dates			Interest Rate(s) at December 31, 2025				At December 31,
								2025		2024
Equipment Notes (a)	2026	—	2037	2.70	%	—	6.25%	$	11,708	$	12,983
2026 and 2029 Notes	2026	—	2029	4.38	%	—	4.63%	4,000		4,000
2024 Term Loans (b)	2031			5.73%				2,061		2,082
MileagePlus Senior Secured Notes	n/a			n/a				—		1,900
Other secured debt	2029	—	2035	4.00	%	—	5.25%	361		295
Unsecured
PSP Notes (c)	2030	—	2031	1.00	%	—	5.93%	3,181		3,181
Notes	n/a			n/a				—		315
Other unsecured debt	2027			5.75%				71		81
								21,383		24,837
Less: unamortized debt discount, premiums and debt issuance costs								(117)		(184)
Less: current portion of long-term debt								(4,096)		(2,973)
Long-term debt, net								$	17,170	$	21,680
(a)Financing includes variable rate debt based on the Secured Overnight Financing Rate ("SOFR") (or another index rate), generally subject to a floor, plus a specified margin of 0.64% to 2.00%. (b)Financing includes variable rate debt based on SOFR (or another index rate), subject to a floor, plus a specified margin of 2.00%. (c)The PSP Notes include $1.50 billion of indebtedness evidenced by a 10-year senior unsecured promissory note with Treasury provided under PSP, $0.9 billion of indebtedness evidenced by a 10-year senior unsecured promissory note issued to Treasury pursuant to PSP2 and $0.8 billion of indebtedness evidenced by a 10-year senior unsecured promissory note issued to Treasury pursuant to PSP3. These PSP Notes have a rate of 1.00% in years 1 through 5, and a rate of the SOFR plus 2.00% in years 6 through 10.

Schedule of Contractual Principal Payments

The table below presents the Company's contractual principal payments (not including debt discount or debt issuance costs) as of December 31, 2025 under then-outstanding long-term debt agreements (in millions):


	2026		2027		2028		2029		2030		After 2030		Total
Contractual principal payments	$	4,096	$	2,011	$	1,839	$	2,932	$	2,467	$	8,039	$	21,383

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
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-Paragraph 2
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-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
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-Name Accounting Standards Codification
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-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B

Reference 6: http://www.xbrl.org/2003/role/exampleRef
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Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
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-URI https://asc.fasb.org/1943274/2147481112/505-10-50-7

+ Details

STATEMENTS OF CONSOLIDATED CASH FLOWS (UAH) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating Activities:
Net income	$ 3,353	$ 3,149	$ 2,618
Adjustments to reconcile net income to net cash provided by (used in) operating activities -
Deferred income tax	925	935	756
Depreciation and amortization	2,939	2,928	2,671
Operating and non-operating special charges, non-cash portion	13	158	84
Unrealized (gains) losses on investments	(4)	199	(27)
Amortization of debt discount and debt issuance costs	77	166	139
Other operating activities	(62)	9	6
Changes in operating assets and liabilities -
(Increase) decrease in receivables	(297)	280	(100)
Increase in prepaids and other assets	(264)	(166)	(463)
Increase (decrease) in advance ticket sales	570	857	(851)
Increase in frequent flyer deferred revenue	336	298	468
Increase in accounts payable	674	178	572
Increase in other liabilities	171	454	1,038
Net cash provided by operating activities	8,431	9,445	6,911
Investing Activities:
Capital expenditures, net of flight equipment purchase deposit returns	(5,874)	(5,615)	(7,171)
Purchases of short-term and other investments	(7,763)	(5,809)	(9,470)
Proceeds from sale of short-term and other investments	7,284	8,661	10,519
Proceeds from sale of property and equipment	98	109	39
Other, net	(96)	3	(23)
Net cash used in investing activities	(6,350)	(2,651)	(6,106)
Financing Activities:
Proceeds from issuance of debt and other financial liabilities, net of discounts and fees	578	6,139	2,388
Payments of long-term debt, finance leases and other financial liabilities	(4,771)	(10,138)	(4,248)
Repurchases of common stock	(637)	(162)	0
Other, net	(115)	(21)	(32)
Net cash used in financing activities	(4,945)	(4,182)	(1,892)
Net increase (decrease) in cash, cash equivalents and restricted cash	(2,865)	2,612	(1,087)
Cash, cash equivalents and restricted cash at beginning of year	8,946	6,334	7,421
Cash, cash equivalents and restricted cash at end of year	6,081	8,946	6,334
Investing and Financing Activities Not Affecting Cash:
Right-of-use assets acquired or modified through operating leases	1,901	625	761
Property and equipment acquired through the issuance or modification of debt, finance leases and other financial liabilities	(25)	409	819
Operating leases converted to finance leases	417	239	295
Investment interests received in exchange for loans, goods and services	45	24	33
Cash Paid During the Period for:
Interest	1,330	1,494	1,848
Income taxes	$ 62	$ 88	$ 7

STATEMENTS OF CONSOLIDATED OPERATIONS (UA) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating revenue:
Total operating revenue	$ 59,070	$ 57,063	$ 53,717
Operating expense:
Salaries and related costs	17,647	16,678	14,787
Aircraft fuel	11,396	11,756	12,651
Landing fees and other rent	3,849	3,437	3,076
Aircraft maintenance materials and outside repairs	3,294	3,063	2,736
Depreciation and amortization	2,939	2,928	2,671
Regional capacity purchase	2,693	2,516	2,400
Distribution expenses	2,109	2,231	1,977
Aircraft rent	252	193	197
Special charges	259	112	949
Other operating expenses	9,919	9,053	8,062
Total operating expense	54,356	51,967	49,506
Operating income	4,713	5,096	4,211
Nonoperating income (expense):
Interest expense	(1,373)	(1,629)	(1,956)
Interest income	611	726	827
Interest capitalized	206	227	182
Unrealized gains (losses) on investments, net	4	(199)	27
Miscellaneous, net	144	(53)	96
Total nonoperating expense, net	(408)	(928)	(824)
Income before income taxes	4,306	4,168	3,387
Total Income Tax Expense	953	1,019	769
Net income	3,353	3,149	2,618
Passenger revenue
Operating revenue:
Total operating revenue	53,438	51,829	49,046
Cargo revenue
Operating revenue:
Total operating revenue	1,779	1,743	1,495
Other operating revenue
Operating revenue:
Total operating revenue	3,853	3,491	3,176
United Airlines, Inc.
Operating revenue:
Total operating revenue	59,070	57,063	53,717
Operating expense:
Salaries and related costs	17,647	16,678	14,787
Aircraft fuel	11,396	11,756	12,651
Landing fees and other rent	3,849	3,437	3,076
Aircraft maintenance materials and outside repairs	3,294	3,063	2,736
Depreciation and amortization	2,939	2,928	2,671
Regional capacity purchase	2,693	2,516	2,400
Distribution expenses	2,109	2,231	1,977
Aircraft rent	252	193	197
Special charges	259	112	949
Other operating expenses	9,917	9,050	8,059
Total operating expense	54,354	51,964	49,503
Operating income	4,716	5,099	4,214
Nonoperating income (expense):
Interest expense	(1,373)	(1,629)	(1,956)
Interest income	611	726	827
Interest capitalized	206	227	182
Unrealized gains (losses) on investments, net	4	(199)	27
Miscellaneous, net	144	(53)	96
Total nonoperating expense, net	(408)	(928)	(824)
Income before income taxes	4,308	4,171	3,390
Total Income Tax Expense	953	1,020	770
Net income	3,355	3,151	2,620
United Airlines, Inc. \| Passenger revenue
Operating revenue:
Total operating revenue	53,438	51,829	49,046
United Airlines, Inc. \| Cargo revenue
Operating revenue:
Total operating revenue	1,779	1,743	1,495
United Airlines, Inc. \| Other operating revenue
Operating revenue:
Total operating revenue	$ 3,853	$ 3,491	$ 3,176

STATEMENTS OF CONSOLIDATED OPERATIONS (UAH) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating revenue:
Total operating revenue	$ 59,070	$ 57,063	$ 53,717
Operating expense:
Salaries and related costs	17,647	16,678	14,787
Aircraft fuel	11,396	11,756	12,651
Landing fees and other rent	3,849	3,437	3,076
Aircraft maintenance materials and outside repairs	3,294	3,063	2,736
Depreciation and amortization	2,939	2,928	2,671
Regional capacity purchase	2,693	2,516	2,400
Distribution expenses	2,109	2,231	1,977
Aircraft rent	252	193	197
Special charges	259	112	949
Other operating expenses	9,919	9,053	8,062
Total operating expense	54,356	51,967	49,506
Operating income	4,713	5,096	4,211
Nonoperating income (expense):
Interest expense	(1,373)	(1,629)	(1,956)
Interest income	611	726	827
Interest capitalized	206	227	182
Unrealized gains (losses) on investments, net	4	(199)	27
Miscellaneous, net	144	(53)	96
Total nonoperating expense, net	(408)	(928)	(824)
Income before income taxes	4,306	4,168	3,387
Total Income Tax Expense	953	1,019	769
Net income	$ 3,353	$ 3,149	$ 2,618
Earnings per share, basic (in dollars per share)	$ 10.32	$ 9.58	$ 7.98
Earnings per share, diluted (in dollars per share)	$ 10.20	$ 9.45	$ 7.89
Passenger revenue
Operating revenue:
Total operating revenue	$ 53,438	$ 51,829	$ 49,046
Cargo revenue
Operating revenue:
Total operating revenue	1,779	1,743	1,495
Other operating revenue
Operating revenue:
Total operating revenue	$ 3,853	$ 3,491	$ 3,176

INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Taxes [Line Items]
Capital loss carryforwards, valuation allowance	$ 108.0
Unrecognized tax benefits	74.0	$ 70.0	$ 66.0
Federal
Income Taxes [Line Items]
NOL carryforwards	10,600.0
Tax effected amount of NOLs	2,200.0
NOLs without an expiration date	10,500.0
Federal \| 2029
Income Taxes [Line Items]
NOL carryforwards	100.0
State
Income Taxes [Line Items]
NOL carryforwards	2,800.0
Tax effected amount of NOLs	200.0
Tax credits	57.0
Tax credits without an expiration date	5.5
NOL and tax credit carryforwards, valuation allowance	$ 44.0
State \| Minimum
Income Taxes [Line Items]
NOL expiration period	1 year
Tax credit expiration period	1 year
State \| Maximum
Income Taxes [Line Items]
NOL expiration period	20 years
Tax credit expiration period	15 years

INCOME TAXES

12 Months Ended

Dec. 31, 2025

Income Tax Disclosure [Abstract]

INCOME TAXES

The income tax provision differed from amounts computed at the statutory federal income tax rate and consisted of the following significant components for the years ended December 31 (in millions):


	2025				2024				2023
Income tax provision at statutory rate	$	904	21.0	%	$	875	21.0	%	$	711	21.0	%
State income tax provision, net of federal income tax benefit (a)	74		1.7	%	59		1.4	%	37		1.1	%



Change in valuation allowance	(68)		(1.6)	%	27		0.6	%	(24)		(0.7)	%
Nontaxable or nondeductible items	27		0.6	%	48		1.2	%	39		1.1	%

Other, net	16		0.4	%	10		0.2	%	6		0.2	%
Income tax expense	$	953	22.1	%	$	1,019	24.4	%	$	769	22.7	%
(a) California and Colorado make up more than 50% of the state income tax expense category in 2025. California, Colorado and Illinois make up more than 50% of the state income tax expense category in 2024 and 2023

The components of the income tax provision consisted of the following for the years ended December 31 (in millions):


	2025		2024		2023
Current:
US Federal	$	(4)	$	50	$	—
US State and Local	20		28		8
Foreign	12		6		5
Total Current	28		84		13
Deferred:
US Federal	866		898		726
US State and Local	58		37		30
Total Deferred	925		935		756
Total income tax expense:
US Federal	862		948		726
US State and Local	79		65		38
Foreign	12		6		5
Total Income Tax Expense	$	953	$	1,019	$	769

The following table presents tax payment, net of refunds, by jurisdiction for the years ended December 31 (in million):


	2025		2024		2023
Federal	$	33	$	47	$	1
State
California	13		25		(4)
Illinois	2		5		3
All other state	2		4		2
Foreign
Guatemala	3		3		3
India	3		2		1
All other foreign	6		2		1
Total	$	62	$	88	$	7

Temporary differences and carryforwards that give rise to deferred tax assets and liabilities as of December 31 were as follows (in millions):


	UAL				United
	2025		2024		2025		2024
Deferred income tax asset (liability):
Federal and state net operating loss ("NOL") carryforwards	$	2,326	$	2,149	$	2,298	$	2,119
Deferred revenue	1,894		1,865		1,894		1,865
Operating lease liabilities	1,349		1,110		1,349		1,110
Employee benefits, including pension, postretirement and medical	701		608		701		608
Other financial liabilities	478		517		478		517
Interest expense carryforward	109		467		109		467
Other	377		565		375		565
Less: Valuation allowance	(151)		(208)		(151)		(208)
Total deferred tax assets	$	7,083	$	7,073	$	7,053	$	7,043

Depreciation	$	(7,814)	$	(7,171)	$	(7,814)	$	(7,171)
Operating lease right-of-use asset	(1,116)		(863)		(1,116)		(863)
Intangible assets	(616)		(619)		(616)		(619)
Total deferred tax liabilities	$	(9,546)	$	(8,653)	$	(9,546)	$	(8,653)
Net deferred tax asset (liability)	$	(2,463)	$	(1,580)	$	(2,493)	$	(1,610)

United and its domestic consolidated subsidiaries file a consolidated federal income tax return with UAL. Under an intercompany tax allocation policy, United and its subsidiaries compute, record and pay UAL for their own tax liabilities as if they were separate companies filing separate returns. In determining their own tax liabilities, United and each of its subsidiaries take into account all tax credits or benefits generated and utilized as separate companies and they are each compensated for the aforementioned tax benefits on an annual basis.

The Company's federal and state NOL and tax credit carryforwards relate to prior years' NOLs and credits, which may be used to reduce tax liabilities in future years. These tax benefits are mostly attributable to federal pre-tax NOL carryforwards of $10.6 billion ($2.2 billion tax effected) for UAL as of December 31, 2025. If not utilized, $0.1 billion of these federal pre-tax NOLs will expire in 2029. The remaining $10.5 billion of NOLs have no expiration date. State pre-tax NOLs of $2.8 billion ($0.2 billion tax effected) as of December 31, 2025 expire over a 1 to 20-year period. As of December 31, 2025, state tax credits were $57 million. These credits will expire over a 1 to 15-year period, and an additional $5.5 million of state tax credits have no expiration date.

As of December 31, 2025, the Company has recorded $108 million of valuation allowance against its capital loss deferred tax assets. Capital losses have a limited carryforward period of five years, and they can be utilized only to the extent of capital gains. The Company does not anticipate generating sufficient capital gains to utilize the losses before they expire, therefore, a valuation allowance is necessary as of December 31, 2025. Additionally, the Company recorded a valuation allowance of $44 million on certain state deferred tax assets primarily due to state NOLs that have short expiration periods.

The Company's unrecognized tax benefits related to uncertain tax positions were $74 million, $70 million and $66 million at December 31, 2025, 2024 and 2023, respectively. All of the uncertain tax positions would affect the Company's effective tax rate if recognized. Changes in unrecognized tax benefits were immaterial during 2025, 2024 and 2023. There are no material amounts included in the balance at December 31, 2025 for tax positions for which the ultimate deductibility is highly certain but for which there is uncertainty about the timing of such deductibility.

The Company's federal income tax returns for tax years after 2000 remain subject to examination by the Internal Revenue Service and state taxing jurisdictions.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Publisher FASB
-URI https://asc.fasb.org/740/tableOfContent

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-14

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-21

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 17
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-17

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-2

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482603/740-30-50-2

+ Details

REVENUE RECOGNITION - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenue From Contract With Customer [Line Items]
Expiration period for refundable tickets	1 year
Expiration period for advance ticket sales	12 months
Revenue	$ 59,070	$ 57,063	$ 53,717
Period over which miles are expected to be redeemed	two years
Minimum
Revenue From Contract With Customer [Line Items]
Term for frequent flyer mileage sales to partners	1 year
Maximum
Revenue From Contract With Customer [Line Items]
Term for frequent flyer mileage sales to partners	5 years
Advance Ticket Sales
Revenue From Contract With Customer [Line Items]
Revenue recognized	$ 5,800	5,300	5,700
Passenger, Ancillary Fees
Revenue From Contract With Customer [Line Items]
Revenue	4,800	4,500	4,100
Other operating revenue
Revenue From Contract With Customer [Line Items]
Revenue	3,853	3,491	3,176
Other operating revenue \| Chase and Other Partner Agreements
Revenue From Contract With Customer [Line Items]
Revenue	$ 3,200	$ 2,900	$ 2,700

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS - Assumptions Used for Benefit Plans (Details)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Pension Benefits
Assumptions used to determine benefit obligations
Discount rate	5.62%	5.67%
Rate of compensation increase	3.85%	3.85%
Assumptions used to determine net expense
Discount rate	5.67%	5.04%
Expected return on plan assets	7.81%	7.97%
Rate of compensation increase	3.85%	3.84%
Other Postretirement Benefits
Assumptions used to determine benefit obligations
Discount rate	5.43%	5.70%
Assumptions used to determine net expense
Discount rate	5.70%	5.43%
Expected return on plan assets	3.00%	3.00%
Health care cost trend rate assumed for next year	7.00%	6.75%
Rate to which the cost trend rate is assumed to decline (ultimate trend rate in 2035)	4.50%	4.50%

DEBT

12 Months Ended

Dec. 31, 2025

Debt Disclosure [Abstract]

DEBT


(In millions)	Maturity Dates			Interest Rate(s) at December 31, 2025				At December 31,
								2025		2024
Equipment Notes (a)	2026	—	2037	2.70	%	—	6.25%	$	11,708	$	12,983
2026 and 2029 Notes	2026	—	2029	4.38	%	—	4.63%	4,000		4,000
2024 Term Loans (b)	2031			5.73%				2,061		2,082
MileagePlus Senior Secured Notes	n/a			n/a				—		1,900
Other secured debt	2029	—	2035	4.00	%	—	5.25%	361		295
Unsecured
PSP Notes (c)	2030	—	2031	1.00	%	—	5.93%	3,181		3,181
Notes	n/a			n/a				—		315
Other unsecured debt	2027			5.75%				71		81
								21,383		24,837
Less: unamortized debt discount, premiums and debt issuance costs								(117)		(184)
Less: current portion of long-term debt								(4,096)		(2,973)
Long-term debt, net								$	17,170	$	21,680
(a)Financing includes variable rate debt based on the Secured Overnight Financing Rate ("SOFR") (or another index rate), generally subject to a floor, plus a specified margin of 0.64% to 2.00%. (b)Financing includes variable rate debt based on SOFR (or another index rate), subject to a floor, plus a specified margin of 2.00%. (c)The PSP Notes include $1.50 billion of indebtedness evidenced by a 10-year senior unsecured promissory note with Treasury provided under PSP, $0.9 billion of indebtedness evidenced by a 10-year senior unsecured promissory note issued to Treasury pursuant to PSP2 and $0.8 billion of indebtedness evidenced by a 10-year senior unsecured promissory note issued to Treasury pursuant to PSP3. These PSP Notes have a rate of 1.00% in years 1 through 5, and a rate of the SOFR plus 2.00% in years 6 through 10.

As of December 31, 2025, we had $3.0 billion undrawn and available under our revolving credit facility.


	2026		2027		2028		2029		2030		After 2030		Total
Contractual principal payments	$	4,096	$	2,011	$	1,839	$	2,932	$	2,467	$	8,039	$	21,383

In 2025, United borrowed $0.5 billion aggregate principal amount from financial institutions to finance the purchase of aircraft. The notes evidencing these borrowings, which are secured by the related aircraft, mature between 2035 and 2037 and bear interest equal to Term SOFR plus a margin with variable rates ranging from 5.29% to 5.39%.

In November 2025, at the request of United, the Greater Orlando Aviation Authority issued its approximately $258 million special purpose airport facilities revenue bonds and loaned the proceeds of such bonds to United pursuant to a loan agreement to finance a portion of the costs of constructing certain airport improvements, including a hangar among other facilities, to be installed and leased by United at Orlando International Airport. The bonds bear interest at 5.25% to 5.50% per annum, payable semiannually, commencing May 1, 2026 through the November 1, 2037 final maturity date. As security for United's obligations under the loan agreement, United also entered into a leasehold mortgage which grants to the trustee of the bonds (acting on behalf of the bondholders) a lien on United's interest in the leased premises and any improvements thereon owned by or leased to United. As of December 31, 2025, United had recorded approximately $71 million related to this debt.

On July 7, 2025, Mileage Plus Holdings, LLC ("MPH"), a direct wholly owned subsidiary of United, and Mileage Plus Intellectual Property Assets, Ltd., an indirect wholly owned subsidiary of MPH ("MIPA" and, together with MPH, the "Issuers"), redeemed in full (the "Redemption") all $1.52 billion aggregate principal amount of the Issuers' outstanding MileagePlus 6.5% senior secured notes due 2027 (the "MileagePlus Senior Secured Notes"), which were secured by substantially all of the assets of the Issuers and their subsidiaries. As a result of the Redemption and the July 2024 voluntarily prepayment in full of the $1.80 billion outstanding principal balance of the secured term loan facility, which was secured ratably with the MileagePlus Senior Secured Notes, all indebtedness secured by the MileagePlus assets have been fully repaid.

Our debt agreements contain customary terms and conditions as well as various affirmative, negative and financial covenants that, among other things, limit our ability under certain circumstances to create liens on collateral, make certain dividends, stock repurchases, restricted investments and other restricted payments, and consolidate, merge, sell, or otherwise dispose of all or substantially all of our assets. Our debt agreements also contain events of default customary for similar financings including, in certain cases, cross-payment default and cross-acceleration to other material indebtedness. Certain of our debt agreements contain financial covenants that require the Company to maintain at least $2.0 billion of unrestricted liquidity at all times, which includes unrestricted cash, certain liquid and short-term investments and any undrawn amounts under any revolving credit facility, and to maintain a minimum ratio of appraised value of collateral to the outstanding debt secured by such collateral on a senior basis of 1.6 to 1.0, tested semi-annually. As of December 31, 2025, the Company was in compliance with its debt covenants under these agreements.

On February 2, 2026, UAL issued, in a public offering, $1,000,000,000 principal amount of its 5.375% Senior Notes due 2031 (the "2031 Notes"), which are guaranteed by United. The 2031 Notes, issued at a price of 100% of their principal amount, bear interest at a rate of 5.375% per annum, payable semi-annually on March 1 and September 1 of each year, beginning September 1, 2026 and maturing on March 1, 2031. UAL, at its option, may redeem the 2031 Notes at any time prior to September 1, 2030, in whole or in part, at a redemption price equal to the greater of (1) 100% of the principal amount of the 2031 Notes to be redeemed and (2) a make-whole amount, if any, plus accrued and unpaid interest on the principal amount being redeemed to the redemption date. At any time on or after September 1, 2030, UAL may redeem the 2031 Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the 2031 Notes to be redeemed, plus accrued and unpaid interest on the principal amount being redeemed to the redemption date.

On February 3, 2026, the Company entered into Amendment No. 4 to Term Loan Credit and Guaranty Agreement (2024 Term Loans) that lowered the margin on its interest rate to 1.75%, in the case of Term SOFR Rate (as such term is defined in the Term Loan Credit and Guaranty Agreement, dated as of April 21, 2021, as amended) loans, and 0.75%, in the case of loans at other market rates.

On February 6, 2026, UAL issued, in a public offering, $1,000,000,000 principal amount of its 4.875% Senior Notes due 2029 (the "2029 Notes"), which are guaranteed by United. The 2029 Notes, issued at a price of 100% of their principal amount, bear interest at a rate of 4.875% per annum, payable semi-annually on March 1 and September 1 of each year, beginning September 1, 2026 and maturing on March 1, 2029. UAL, at its option, may redeem the 2029 Notes at any time prior to December 1, 2028, in whole or in part, at a redemption price equal to the greater of (1) 100% of the principal amount of the 2029 Notes to be redeemed and (2) a make-whole amount, if any, plus accrued and unpaid interest on the principal amount being redeemed to the redemption date. At any time on or after December 1, 2028, UAL may redeem the 2029 Notes, in whole or in part, at a redemption price equal to 100% of the principal amount of the 2029 Notes to be redeemed, plus accrued and unpaid interest on the principal amount being redeemed to the redemption date.

SPECIAL CHARGES (CREDITS)

12 Months Ended

Dec. 31, 2025

Restructuring and Related Activities [Abstract]

SPECIAL CHARGES (CREDITS)


	2025		2024		2023
Labor contract ratification bonuses	$	561	$	—	$	814
(Gains) losses on sale of assets and other special charges	(303)		112		135
Total operating special charges	259		112		949
Nonoperating unrealized (gains) losses on investments, net	(4)		199		(27)
Nonoperating debt extinguishment and modification fees	20		128		11
Total nonoperating special charges and unrealized (gains) losses on investments, net	16		327		(16)
Total operating and nonoperating special charges and unrealized (gains) losses on investments, net	274		439		933
Income tax benefit, net of valuation allowance	(136)		(54)		(214)
Total operating and nonoperating special charges and unrealized (gains) losses on investments, net of income taxes	$	138	$	385	$	719

Operating and nonoperating special charges (credits) and unrealized (gains) losses on investments included the following:

During 2025, the Company recorded a $561 million special charge in connection with a proposed labor contract ratification payment for the Company's employees represented by the AFA. See Note 12 for more information related to this labor contract.

During 2025, the Company recorded $303 million of net gains on sale of assets and other special charges, which were primarily comprised of $427 million of gains on various aircraft sale-leaseback transactions, partially offset by $125 million in other charges mainly consisting of certain one-time expenses related to the Three Party Agreement in connection with the merger between Mesa and Legacy Republic and write-offs related to various cancelled projects.

During 2025, the Company recorded $20 million of charges related to the prepayment in full of the outstanding principal balance of the MileagePlus senior secured notes in July 2025. See Note 10 for more information related to this prepayment.

During 2024, the Company recorded $128 million of charges related to the prepayment in full of the outstanding principal balance of the MileagePlus Term Loan in July 2024, the refinancing of its 2021 term loans in February 2024 and a partial prepayment of the 2024 Term Loans.

INCOME TAXES - Schedule of Income Tax Provision Differed from Amounts Computed at the Statutory Federal Income Tax Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Amount
Income tax provision at statutory rate	$ 904	$ 875	$ 711
State income tax provision, net of federal income tax benefit	74	59	37
Change in valuation allowance	(68)	27	(24)
Nontaxable or nondeductible items	27	48	39
Other, net	16	10	6
Income tax expense	$ 953	$ 1,019	$ 769
Percent
Income tax provision at statutory rate	21.00%	21.00%	21.00%
State income tax provision, net of federal income tax benefit	1.70%	1.40%	1.10%
Change in valuation allowance	(1.60%)	0.60%	(0.70%)
Nontaxable or nondeductible items	0.60%	1.20%	1.10%
Other, net	0.40%	0.20%	0.20%
Income tax expense	22.10%	24.40%	22.70%

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Pension Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 127	$ 135	$ 124
Interest cost	243	229	217
Expected return on plan assets	(273)	(276)	(251)
Amortization of unrecognized actuarial (gain) loss	(7)	19	8
Amortization of prior service (credits) cost	0	0	1
Other	1	1	3
Net periodic benefit cost (credit)	91	108	102
Other Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	6	5	4
Interest cost	31	38	42
Expected return on plan assets	(1)	(1)	(1)
Amortization of unrecognized actuarial (gain) loss	(31)	(26)	(38)
Amortization of prior service (credits) cost	(86)	(93)	(112)
Other	0	0	0
Net periodic benefit cost (credit)	$ (81)	$ (77)	$ (105)

PENSION, POSTRETIREMENT AND OTHER EMPLOYEE BENEFIT PLANS - Pension and Other Postretirement Plan Assets (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Level 3
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	$ 345	$ 314	$ 322
Pension Benefits
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	4,047	3,601	3,599
Pension Benefits \| Level 1
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	117	106
Pension Benefits \| Level 2
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	265	257
Pension Benefits \| Level 3
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	302	269
Pension Benefits \| Assets Measured at NAV
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	3,364	2,969
Pension Benefits \| Equity securities
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	1,421	1,231
Pension Benefits \| Equity securities \| Level 1
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	108	92
Pension Benefits \| Equity securities \| Level 2
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	4	4
Pension Benefits \| Equity securities \| Level 3
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	184	150
Pension Benefits \| Equity securities \| Assets Measured at NAV
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	1,125	985
Pension Benefits \| Fixed-income securities
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	1,601	1,359
Pension Benefits \| Fixed-income securities \| Level 1
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	0	0
Pension Benefits \| Fixed-income securities \| Level 2
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	107	100
Pension Benefits \| Fixed-income securities \| Level 3
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	9	1
Pension Benefits \| Fixed-income securities \| Assets Measured at NAV
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	1,485	1,258
Pension Benefits \| Alternatives
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	763	762
Pension Benefits \| Alternatives \| Level 1
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	0	0
Pension Benefits \| Alternatives \| Level 2
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	0	0
Pension Benefits \| Alternatives \| Level 3
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	109	116
Pension Benefits \| Alternatives \| Assets Measured at NAV
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	654	646
Pension Benefits \| Other investments
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	262	249
Pension Benefits \| Other investments \| Level 1
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	8	14
Pension Benefits \| Other investments \| Level 2
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	154	153
Pension Benefits \| Other investments \| Level 3
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	1	2
Pension Benefits \| Other investments \| Assets Measured at NAV
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	99	80
Other Postretirement Benefits
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	43	45	$ 46
Other Postretirement Benefits \| Deposit administration fund
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	43	45
Other Postretirement Benefits \| Deposit administration fund \| Level 1
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits \| Deposit administration fund \| Level 2
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	0	0
Other Postretirement Benefits \| Deposit administration fund \| Level 3
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	43	45
Other Postretirement Benefits \| Deposit administration fund \| Assets Measured at NAV
Defined Benefit Plan, Plan Assets, Category [Line Items]
Fair value of plan assets	$ 0	$ 0

BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Reconciliation of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 5,942	$ 8,769	$ 6,058
Restricted cash in Prepaid expenses and other	0	11	31
Noncurrent assets:
Restricted cash in Investments in affiliates and other, net	139	166	245
Total cash, cash equivalents and restricted cash	$ 6,081	$ 8,946	$ 6,334	$ 7,421

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Dec. 31, 2025
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

SHARE-BASED COMPENSATION PLANS - Summary of Unearned Compensation and Weighted-Average Remaining Period to Recognize Costs (Details) $ in Millions	12 Months Ended
	Dec. 31, 2025 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unearned Compensation	$ 91
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unearned Compensation	$ 90
Weighted-Average Remaining Period (in years)	1 year 3 months 18 days
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unearned Compensation	$ 1
Weighted-Average Remaining Period (in years)	1 year 8 months 12 days

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) ("AOCI") (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Deferred Taxes
Balance, deferred taxes	$ (419)	$ (347)	$ (416)
Changes in value	12	(94)	38
Amounts reclassified to earnings	28	22	31
Balance, deferred taxes	(379)	(419)	(347)
Total
Beginning balance	12,675	9,324	6,896
Changes in value	(42)	327	(130)
Amounts reclassified to earnings	(98)	(77)	(107)
Ending balance	15,282	12,675	9,324
Accumulated Other Comprehensive Income (Loss)
Total
Beginning balance	188	(62)	175
Ending balance	48	188	(62)
Deferred income tax expense	285
Pension and Other Postretirement Liabilities
Before Tax
Balance, before tax	607	289	626
Changes in value	(67)	417	(199)
Amounts reclassified to earnings	(123)	(99)	(138)
Balance, before tax	417	607	289
Investments and Other
Before Tax
Balance, before tax	0	(4)	(35)
Changes in value	14	4	31
Amounts reclassified to earnings	(3)	0	0
Balance, before tax	$ 10	$ 0	$ (4)

CONSOLIDATED BALANCE SHEETS (UA) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
ASSETS
Cash and cash equivalents	$ 5,942	$ 8,769
Short-term investments	6,298	5,706
Receivables, net	2,391	2,163
Aircraft fuel, spare parts and supplies, net	1,556	1,572
Prepaid expenses and other	671	673
Total current assets	16,857	18,883
Operating property and equipment, net	46,121	42,908
Operating lease right-of-use assets	4,958	3,815
Goodwill	4,527	4,527
Intangible assets, net	2,655	2,683
Investments in affiliates and other, net	1,330	1,267
Total noncurrent assets	59,591	55,200
Total assets	76,448	74,083
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	4,567	4,193
Accrued salaries and benefits	3,900	3,289
Advance ticket sales	8,131	7,561
Frequent flyer deferred revenue	3,721	3,403
Current maturities of long-term debt, finance leases, and other financial liabilities	4,426	3,453
Current maturities of operating leases	631	467
Other	757	948
Total current liabilities	26,133	23,314
Long-term debt, finance leases, and other financial liabilities	20,562	25,203
Long-term obligations under operating leases	5,417	4,510
Frequent flyer deferred revenue	4,056	4,038
Pension and postretirement benefit liability	1,058	1,233
Deferred income taxes	2,463	1,580
Other	1,478	1,530
Total noncurrent liabilities	35,033	38,094
Commitments and Contingencies
Stockholders' equity:
Common stock at par, $0.01 par value; authorized 1,000 shares; issued and outstanding 1,000 shares at December 31, 2025 and 2024	4	4
Additional capital invested	8,911	8,980
Retained earnings	10,092	6,880
Accumulated other comprehensive income	48	188
Total stockholders' equity	15,282	12,675
Total liabilities and stockholders' equity	76,448	74,083
United Airlines, Inc.
ASSETS
Cash and cash equivalents	5,942	8,769
Short-term investments	6,298	5,706
Receivables, net	2,391	2,163
Aircraft fuel, spare parts and supplies, net	1,556	1,572
Prepaid expenses and other	671	673
Total current assets	16,857	18,883
Operating property and equipment, net	46,121	42,908
Operating lease right-of-use assets	4,958	3,815
Goodwill	4,527	4,527
Intangible assets, net	2,655	2,683
Investments in affiliates and other, net	1,330	1,267
Total noncurrent assets	59,591	55,200
Total assets	76,448	74,083
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	4,567	4,193
Accrued salaries and benefits	3,900	3,289
Advance ticket sales	8,131	7,561
Frequent flyer deferred revenue	3,721	3,403
Current maturities of long-term debt, finance leases, and other financial liabilities	4,426	3,453
Current maturities of operating leases	631	467
Other	754	949
Total current liabilities	26,130	23,315
Long-term debt, finance leases, and other financial liabilities	20,562	25,203
Long-term obligations under operating leases	5,417	4,510
Frequent flyer deferred revenue	4,056	4,038
Pension and postretirement benefit liability	1,058	1,233
Deferred income taxes	2,493	1,610
Other	1,478	1,530
Total noncurrent liabilities	35,064	38,124
Commitments and Contingencies
Stockholders' equity:
Common stock at par, $0.01 par value; authorized 1,000 shares; issued and outstanding 1,000 shares at December 31, 2025 and 2024	0	0
Additional capital invested	760	617
Retained earnings	12,842	9,487
Accumulated other comprehensive income	48	188
Payable to parent	1,604	2,352
Total stockholders' equity	15,254	12,644
Total liabilities and stockholders' equity	$ 76,448	$ 74,083

INCOME TAXES - Schedule of Temporary Differences and Carryforwards Giving Rise to Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Deferred income tax asset (liability):
Federal and state net operating loss ("NOL") carryforwards	$ 2,326	$ 2,149
Deferred revenue	1,894	1,865
Employee benefits, including pension, postretirement and medical	701	608
Operating lease liabilities	1,349	1,110
Other financial liabilities	478	517
Interest expense carryforward	109	467
Other	377	565
Less: Valuation allowance	(151)	(208)
Total deferred tax assets	7,083	7,073
Depreciation	(7,814)	(7,171)
Operating lease right-of-use asset	(1,116)	(863)
Intangible assets	(616)	(619)
Total deferred tax liabilities	(9,546)	(8,653)
Net deferred tax liability	(2,463)	(1,580)
United Airlines, Inc.
Deferred income tax asset (liability):
Federal and state net operating loss ("NOL") carryforwards	2,298	2,119
Deferred revenue	1,894	1,865
Employee benefits, including pension, postretirement and medical	701	608
Operating lease liabilities	1,349	1,110
Other financial liabilities	478	517
Interest expense carryforward	109	467
Other	375	565
Less: Valuation allowance	(151)	(208)
Total deferred tax assets	7,053	7,043
Depreciation	(7,814)	(7,171)
Operating lease right-of-use asset	(1,116)	(863)
Intangible assets	(616)	(619)
Total deferred tax liabilities	(9,546)	(8,653)
Net deferred tax liability	$ (2,493)	$ (1,610)

REVENUE RECOGNITION

12 Months Ended

Dec. 31, 2025

Revenue from Contract with Customer [Abstract]

REVENUE RECOGNITION

Passenger Revenue. Passenger revenue is recognized when transportation is provided.

Passenger tickets and related ancillary services sold by the Company for flights are purchased primarily via credit card transactions, with payments collected by the Company in advance of the performance of related services. The Company initially records ticket sales in its Advance ticket sales liability, deferring revenue recognition until the travel occurs. For travel that has more than one flight segment, the Company deems each segment as a separate performance obligation and recognizes revenue for each segment as travel occurs. Tickets sold by other airlines where the Company provides the transportation are recognized as passenger revenue at the estimated value to be billed to the other airline when travel is provided. Differences between amounts billed and the actual amounts may be rejected and rebilled or written off if the amount recorded was different from the original estimate. When necessary, the Company records a reserve against its billings and payables with other airlines based on historical experience.

The Company sells certain tickets with connecting flights with one or more segments operated by its other airline partners. For segments operated by its other airline partners, the Company has determined that it is acting as an agent on behalf of the other airlines as they are responsible for their portion of the contract (i.e., transportation of the passenger). The Company, as the agent, recognizes revenue within Other operating revenue at the time of the travel for the net amount representing commission to be retained by the Company for any segments flown by other airlines.

Refundable tickets expire after one year from the date of issuance. Non-refundable tickets generally expire on the date of the intended travel, unless the date is extended by notification from the customer on or before the intended travel date.

United initially capitalizes the costs of selling airline travel tickets and then recognizes those costs as Distribution expense at the time of travel. Costs to sell a ticket include credit card fees, travel agency and other commissions paid, as well as global distribution systems booking fees.

Advance ticket sales. Advance ticket sales represent the Company's liability to provide air transportation in the future. All tickets sold at any given point in time have travel dates through the next 12 months. The Company defers amounts related to future travel in its Advance ticket sales liability account.

Estimate of tickets not expected to be used ("ticket breakage"). The Company estimates the value of advance ticket sales that will ultimately expire unused based on historical experience and qualitative factors such as recent program changes. The Company recognizes revenue related to these tickets based on the pattern in which concurrently sold tickets are used.

In the years ended December 31, 2025, 2024 and 2023, the Company recognized approximately $5.8 billion, $5.3 billion and $5.7 billion, respectively, of passenger revenue for tickets that were included in Advance ticket sales at the beginning of those periods.

Revenue by geography. The Company further disaggregates its operating revenue by principal geographic region for the years ended December 31 as presented in the table below (in millions):


	2025		2024		2023
Domestic (U.S. and Canada)	$	35,017	$	34,067	$	32,400
Atlantic	11,647		11,097		10,982
Pacific	6,878		6,462		5,267
Latin America	5,528		5,437		5,068
Total	$	59,070	$	57,063	$	53,717

The Company attributes revenue among the geographic regions based upon the origin and destination of each flight segment. The Company's operations involve an insignificant level of revenue-producing assets in geographic regions as the overwhelming majority of the Company's revenue-producing assets (primarily U.S. registered aircraft) can be deployed in any of its geographic regions.

Ancillary services. The Company charges fees, separately from ticket sales, for certain ancillary services that are directly related to passenger travel, such as baggage fees, premium seat fees, inflight amenity fees, and other ticket-related fees. These ancillary fees are part of the travel performance obligation and, as such, are recognized as Passenger revenue when the travel occurs. The Company recorded $4.8 billion, $4.5 billion and $4.1 billion of ancillary fees within Passenger revenue in the years ended December 31, 2025, 2024 and 2023, respectively.

Ticket taxes. Certain governmental taxes are imposed on the Company's ticket sales through a fee included in ticket prices. The Company collects these fees and remits them to the appropriate government agency. These fees are excluded from the contract transaction price and are therefore not included in passenger revenue. We record a liability when amounts are collected and reduce the liability when payments are made to the appropriate taxing authority.

Frequent Flyer Program. United's MileagePlus loyalty program builds customer loyalty by offering awards, benefits and services to program participants. Members in this program earn miles for travel on United, United Express, Star Alliance members and certain other airlines that participate in the program. Members can also earn miles by purchasing goods and services from our network of non-airline partners. We have contracts to sell miles to these partners with the terms extending from approximately one to five years. These partners include domestic and international credit card issuers, retail merchants, hotels, car rental companies and our participating airline partners. Miles can be redeemed for free (other than taxes and government-imposed fees), discounted or upgraded air travel and non-travel awards.

Miles earned in conjunction with travel. When MileagePlus members earn miles for flights, the Company recognizes a portion of the ticket sales as revenue when the travel occurs and defers a portion of the ticket sale representing the value of the related miles as a separate performance obligation. The Company determines the estimated selling price of travel and miles as if each

performance obligation is sold on a separate basis. The total consideration from each ticket sale is then allocated to each of the performance obligations, individually, on a pro-rata basis. At the time of travel, the Company records the portion allocated to the miles to Frequent flyer deferred revenue on the Company's consolidated balance sheet and subsequently recognizes it into revenue when miles are redeemed for air travel and non-travel awards.

Estimate of miles not expected to be redeemed ("mileage breakage"). The Company's mileage breakage model is based on the assumption that the likelihood that an account will redeem its miles can be estimated based on a consideration of the account's historical behavior. The Company uses a statistical model to estimate the probability that an account will redeem its current miles balance and reviews its mileage breakage estimates annually. The Company's estimate of the expected mileage breakage requires management judgment. Changes to mileage breakage assumptions, or to program rules and program redemption opportunities, may result in material changes to the deferred revenue balance as well as recognized revenues from the program. We recognize mileage breakage proportionally as the remaining miles are redeemed.

Estimated selling price of miles. The Company's estimated selling price of miles is based on an equivalent ticket value, which incorporates the expected redemption of miles, as the best estimate of the selling price for these miles. The equivalent ticket value is based on the prior 12 months' weighted average equivalent ticket value of similar fares as those used to settle award redemptions while taking into consideration such factors as redemption pattern, cabin class, loyalty status and geographic region. The estimated selling price of miles is adjusted by mileage breakage that considers a number of factors, including redemption patterns of various customer groups.

Co-Brand agreement. United's most significant contract to sell MileagePlus miles is with its co-branded credit card partner JPMorgan Chase Bank USA, N.A. ("Chase"). Chase awards miles to MileagePlus members based on their credit card activity. United identified the following significant separately identifiable performance obligations in this contract (the "Co-Brand Agreement"):

•MileagePlus miles awarded – United has a performance obligation to provide MileagePlus cardholders with miles to be used for air travel and non-travel award redemptions. The Company records Passenger revenue related to the travel awards when the transportation is provided and records Other operating revenue related to the non-travel awards when the goods or services are delivered. The Company records the cost associated with non-travel awards in Other operating revenue, as an agent.

•Marketing – United has a performance obligation to provide Chase access to United's customer list and the use of United's brand. Marketing revenue is recorded to Other operating revenue as miles are delivered to Chase.

•Advertising – United has a performance obligation to provide advertising in support of the MileagePlus card in various customer contact points such as United's website, email promotions, direct mail campaigns, airport advertising and in-flight advertising. Advertising revenue is recorded to Other operating revenue as miles are delivered to Chase.

•Other travel-related benefits – United's performance obligations are comprised of various items such as waived bag fees, seat upgrades and lounge passes. Lounge passes are recorded to Other operating revenue as customers use the lounge passes. Bag fees and seat upgrades are recorded to Passenger revenue at the time of the associated travel.

We account for payments received under the Co-Brand Agreement by allocating them to the separately identifiable performance obligations. The fair value of the separately identifiable performance obligations is determined using management's estimated selling price of each component. The objective of using the estimated selling price based methodology is to determine the price at which we would transact a sale if the product or service were sold on a stand-alone basis. Accordingly, we determine our best estimate of selling price by considering multiple inputs and methods including, but not limited to, discounted cash flows, brand value, volume discounts, published selling prices, number of miles awarded and number of miles redeemed. The Company estimated the selling prices and volumes over the term of the Co-Brand Agreement, at the inception of the contract, in order to determine the allocation of proceeds to each of the components to be delivered.

Frequent flyer deferred revenue. Miles in MileagePlus members' accounts are combined into one homogeneous pool and are thus not separately identifiable, for award redemption purposes, between miles earned in the current period and those in their beginning balance. Of the miles expected to be redeemed, the Company expects the majority of these miles to be redeemed within two years. The current portion of the Frequent flyer deferred revenue is based on expected redemptions in the next 12 months. The table below presents a roll forward of Frequent flyer deferred revenue (in millions):



	2025		2024
Balance at January 1	$	7,441	$	7,143
Miles earned	3,883		3,563
Travel miles redeemed	(3,414)		(3,150)
Non-travel miles redeemed	(133)		(115)
Balance at December 31	$	7,777	$	7,441

The portion of the total amounts received from our various partner agreements that is related to the MileagePlus miles awarded is deferred and presented in the table above as an increase to Frequent flyer deferred revenue. In the years ended December 31, 2025, 2024 and 2023, the Company recognized, in Other operating revenue, $3.2 billion, $2.9 billion and $2.7 billion, respectively, related to the marketing, advertising, non-travel miles redeemed (net of related costs) and other travel-related benefits of the mileage revenue associated with our various partner agreements including, but not limited to, our Co-Brand Agreement.

Cargo Revenue. Cargo revenue is recognized when the related shipment arrives at its destination.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-9

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-10

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-15

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-12

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-13

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org/606/tableOfContent

+ Details

LEASES - Summary of Scheduled Future Minimum Lease Payments under Operating and Finance Leases (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
Operating Leases
2026	$ 929
2027	1,123
2028	941
2029	745
2030	790
After 2030	3,642
Minimum lease payments	8,170
Imputed interest	(2,121)
Present value of minimum lease payments	6,048
Less: current maturities of lease obligations	(631)	$ (467)
Long-term lease obligations	5,417	$ 4,510
Finance Leases
2026	101
2027	241
2028	148
2029	21
2030	2
After 2030	2
Minimum lease payments	516
Imputed interest	(42)
Present value of minimum lease payments	474
Less: current maturities of lease obligations	$ (96)
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current maturities of long-term debt, finance leases, and other financial liabilities
Long-term lease obligations	$ 378
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt, finance leases, and other financial liabilities

LEASES - Components of Lease Cost (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Leases [Abstract]
Operating lease cost	$ 894	$ 855	$ 925
Variable and short-term lease cost	4,003	3,592	3,028
Amortization of finance lease assets	86	62	52
Interest on finance lease liabilities	15	16	20
Sublease income	(33)	(35)	(39)
Total lease cost	$ 4,964	$ 4,490	$ 3,986