Condensed Consolidated Statement of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
OPERATING REVENUES:
Passenger	$ 5,233	$ 4,905	$ 9,658	$ 9,303
Freight	44	45	86	87
Other	467	434	883	820
Total operating revenues	5,744	5,384	10,627	10,210
OPERATING EXPENSES:
Salaries, wages, and benefits	1,867	1,639	3,600	3,179
Fuel and oil	990	903	1,912	1,755
Maintenance materials and repairs	251	280	494	543
Aircraft rentals	53	59	107	118
Landing fees and other rentals	332	309	645	611
Depreciation and amortization	319	299	637	588
Other operating expenses	682	619	1,324	1,196
Total operating expenses	4,494	4,108	8,719	7,990
OPERATING INCOME	1,250	1,276	1,908	2,220
OTHER EXPENSES (INCOME):
Interest Expense	27	32	56	62
Capitalized interest	(13)	(11)	(23)	(22)
Interest income	(8)	(6)	(15)	(11)
Other (gains) losses, net	74	(43)	167	71
Total other expenses (income)	80	(28)	185	100
INCOME BEFORE INCOME TAXES	1,170	1,304	1,723	2,120
PROVISION FOR INCOME TAXES	424	484	626	787
NET INCOME	$ 746	$ 820	$ 1,097	$ 1,333
NET INCOME PER SHARE, BASIC	$ 1.24	$ 1.30	$ 1.80	$ 2.09
NET INCOME PER SHARE, DILUTED	$ 1.23	$ 1.28	$ 1.80	$ 2.07
COMPREHENSIVE INCOME	$ 795	$ 1,086	$ 1,157	$ 1,756
BASIC WEIGHTED AVERAGE SHARES OUTSTANDING
Basic	604	632	608	637
DILUTED WEIGHTED AVERAGE SHARES OUTSTANDING
Diluted	605	639	610	644
Cash dividends declared per common share	$ 0.125	$ 0.100	$ 0.225	$ 0.175