CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net Income	$ 437	$ 960	$ 797
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	398	372	363
Stock-based compensation and other	47	55	26
Changes in certain assets and liabilities:
Changes in deferred tax provision	146	45	82
(Increase) decrease in accounts receivable	(25)	(39)	(46)
Increase (decrease) in air traffic liability	(18)	45	3
Increase (decrease) in deferred revenue	149	191	153
Changes in pension and other postretirement benefits	52	17	23
Other—net	9	(56)	(15)
Net cash provided by operating activities	1,195	1,590	1,386
Property and equipment additions:
Aircraft and aircraft purchase deposits	(686)	(804)	(528)
Other flight equipment	(105)	(96)	(53)
Other property and equipment	(169)	(126)	(97)
Total property and equipment additions	(960)	(1,026)	(678)
Acquisition of Virgin America, net of cash acquired	0	0	(1,951)
Purchases of marketable securities	(834)	(1,569)	(960)
Sales and maturities of marketable securities	1,116	1,388	962
Proceeds from disposition of assets and changes in restricted deposits	47	78	5
Net cash used in investing activities	(631)	(1,129)	(2,622)
Cash flows from financing activities:
Proceeds from issuance of long-term debt, net of issuance costs	339	0	2,044
Long-term debt payments	(807)	(397)	(249)
Common stock repurchases	(50)	(75)	(193)
Cash dividend paid	(158)	(148)	(136)
Other financing activities	29	28	25
Net cash provided by (used in) financing activities	(647)	(592)	1,491
Net increase (decrease) in cash, cash equivalents, and restricted cash	(83)	(131)	255
Cash, cash equivalents, and restricted cash at beginning of year	197	328	73
Cash, cash equivalents, and restricted cash at end of year	114	197	328
Cash paid during the year for:
Interest, net of amount capitalized	72	84	24
Income taxes, net of refunds received	$ 0	$ 177	$ 459