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Operating Leases (Tables) | 12 Months Ended
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Dec. 31, 2025
Leases [Abstract] |
Supplemental Balance Sheet Information | The table below presents the lease-related assets and liabilities recorded on the Company’s consolidated balance sheets as of December 31, 2025 and 2024 (in millions):
|  |  |  | December 31,
|  | Balance Sheet Classification |  | 2025 |  | 2024
Assets |  |  |  |  |  |
Operating lease assets |  | Operating lease right-of-use assets |  | $ | 4,806 |  |  | $ | 3,930 |
Liabilities |  |  |  |  |  |
Current operating leases |  | Current maturities of operating leases |  | $ | 779 |  |  | $ | 664 |
Long-term operating leases |  | Long-term operating leases |  | 4,070 |  |  | 3,302 |
Total lease liabilities |  |  |  | $ | 4,849 |  |  | $ | 3,966 |
Weighted-average remaining lease term |  |  |  |  |  |
Operating leases |  |  |  | 8 years |  | 8 years
Weighted-average discount rate |  |  |  |  |  |
Operating leases |  |  |  | 6.46 | % |  | 6.28 | %
Schedule of Lease Costs | The table below presents certain information related to lease costs for operating leases during the years ended December 31, 2025, 2024 and 2023 (in millions):
| Year Ended December 31,
| 2025 |  | 2024 |  | 2023
Operating lease cost(a) | $ | 744 |  |  | $ | 643 |  |  | $ | 539 |
Variable lease cost(a) | 462 |  |  | 383 |  |  | 304 |
Total lease costs | $ | 1,206 |  |  | $ | 1,026 |  |  | $ | 843 |
_________________ (a) Expenses are included within aircraft rent, station operations, maintenance, materials and repairs and other operating within the Company’s consolidated statements of operations.
Reconciliation of Undiscounted Cash Flows | The table below reconciles the undiscounted cash flows as of December 31, 2025 (in millions) for each of the next five years and total of the remaining years to the operating lease liability recorded on the Company’s consolidated balance sheet:
| Total
Operating Leases |
2026 | $ | 806 |
2027 | 799 |
2028 | 754 |
2029 | 681 |
2030 | 648 |
Thereafter | 2,784 |
Total undiscounted minimum lease rentals | 6,472 |
Less: amount of lease payments representing interest | (1,623) |
Present value of future minimum lease rentals | 4,849 |
Less: current obligations under operating leases | (779) |
Long-term operating lease obligations | $ | 4,070 |

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- Definition Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-6 + Details
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