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LEASES (Tables)

12 Months Ended

Dec. 31, 2024

Leases [Abstract]

Schedule of Lease Related Assets and Liabilities

The table below presents the lease-related assets and liabilities recorded on the balance sheets.

Lease asset and liability balance sheet position by category
						December 31,
(in millions)			Classification on the Balance Sheets			2024			2023
Assets
Operating lease assets - Fleet(1)			Operating lease right-of-use assets			$	2,910		$	3,420
Operating lease assets - Ground and other			Operating lease right-of-use assets			3,734			3,584
Finance lease assets			Property and equipment, net			825			1,338
Total lease assets						$	7,469		$	8,342
Liabilities
Current
Operating - Fleet(1)			Current maturities of operating leases			$	551		$	552
Operating - Ground and other			Current maturities of operating leases			212			207
Finance			Current maturities of debt and finance leases			374			358
Noncurrent
Operating - Fleet(1)			Noncurrent operating leases			2,627			3,226
Operating - Ground and other			Noncurrent operating leases			3,187			3,242
Finance			Debt and finance leases			473			1,086
Total lease liabilities						$	7,424		$	8,671
Weighted-average remaining lease term
Operating leases						12 years			13 years
Finance leases						3 years			4 years
Weighted-average discount rate
Operating leases						4.28		%	3.73		%
Finance leases						3.53		%	3.12		%

(1)Includes mainline and regional aircraft leases, regional aircraft leases embedded within our capacity purchase arrangements and engine leases. The interest portion of straight-line rent expense related to fleet operating leases was $165 million and $189 million during the years ended December 31, 2024 and 2023, respectively.

Schedule of Lease, Cost

The table below presents certain information related to the lease costs for finance and operating leases.

Lease cost by category
			Year Ended December 31,
(in millions)			2024			2023			2022
Finance lease cost
Amortization of leased assets			$	88		$	109		$	120
Interest of lease liabilities			54			42			45
Operating lease cost(1)			974			981			949
Short-term lease cost(1)			206			258			281
Variable lease cost(1)			2,902			2,230			1,859
Total lease cost			$	4,224		$	3,620		$	3,254

(1)Expenses are primarily classified within aircraft rent, landing fees and other rents and regional carrier expense on our income statement.

The table below presents supplemental cash flow information related to leases.

Supplemental lease-related cash flow information
			Year Ended December 31,
(in millions)			2024			2023			2022
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows for operating leases			$	1,225		$	1,230		$	809
Operating cash flows for finance leases			56			71			49
Financing cash flows for finance leases			190			264			363

Schedule of Future Cash Flows and Reconciliation to the Balance Sheet, Operating Leases

The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the finance lease liabilities and operating lease liabilities recorded on the balance sheets.

Future lease cash flows and reconciliation to the balance sheet
(in millions)			Operating Leases			Finance Leases
2025			$	993		$	395
2026			917			90
2027			880			268
2028			781			40
2029			620			28
Thereafter			4,183			76
Total minimum lease payments			8,374			897
Less: amount of lease payments representing interest			(1,797)			(50)
Present value of future minimum lease payments			6,577			847
Less: current obligations under leases			(763)			(374)
Long-term lease obligations			$	5,814		$	473

Schedule of Future Cash Flows and Reconciliation to the Balance Sheet, Finance Leases

The table below reconciles the undiscounted cash flows for each of the first five years and total of the remaining years to the finance lease liabilities and operating lease liabilities recorded on the balance sheets.

Future lease cash flows and reconciliation to the balance sheet
(in millions)			Operating Leases			Finance Leases
2025			$	993		$	395
2026			917			90
2027			880			268
2028			781			40
2029			620			28
Thereafter			4,183			76
Total minimum lease payments			8,374			897
Less: amount of lease payments representing interest			(1,797)			(50)
Present value of future minimum lease payments			6,577			847
Less: current obligations under leases			(763)			(374)
Long-term lease obligations			$	5,814		$	473

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Tabular disclosure of undiscounted cash flows of finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to finance 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

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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

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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

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