CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net Income	$ 98	$ (4)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	217	206
Stock-based compensation and other	56	20
Special items - fleet transition and other (noncash)	187	221
Special items - labor and related	51	0
Changes in certain assets and liabilities:
Changes in deferred tax provision	27	14
Increase (Decrease) in Accounts Receivable	(55)	(115)
Increase (Decrease) in Contract with Customer, Liability	394	615
Increase in deferred revenue	80	83
Proceeds from Income Tax Refunds	0	260
Other - net	(223)	(37)
Net cash provided by operating activities	832	1,235
Property and equipment additions:
Aircraft and aircraft purchase deposits	(414)	(509)
Other flight equipment	(113)	(69)
Other property and equipment	(107)	(54)
Total property and equipment additions, including capitalized interest	(634)	(632)
Purchases of marketable securities	(389)	(1,410)
Sales and maturities of marketable securities	574	1,323
Other investing activities	(30)	(2)
Net cash used in investing activities	(479)	(721)
Cash flows from financing activities:
Common stock repurchases	(57)	0
Long-term debt payments	(149)	(239)
Other financing activities	41	33
Net cash provided by (used in) financing activities	(165)	(206)
Net increase in cash, cash equivalents, and restricted cash	188	308
Cash, cash equivalents, and restricted cash at beginning of year	369	494
Cash, cash equivalents, and restricted cash at end of the period	557	802
Cash paid during the period for:
Interest (net of amount capitalized)	42	35
Income taxes	14	0
Non-cash transactions:
Right-of-use assets acquired through operating leases	120	378
Operating lease converted to finance lease	310	0
Noncash or Part Noncash Acquisition, Fixed Assets Acquired	134	0
Reconciliation of cash, cash equivalents, and restricted cash at end of the period
Cash and cash equivalents	536	778
Restricted cash included in Prepaid expenses, assets held-for-sale and other current assets	21	24
Total cash, cash equivalents, and restricted cash at end of the period	$ 557	$ 802