Statements of Consolidated Operations (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating revenue:
Passenger - Mainline	$ 5,938	$ 5,954
Passenger - Regional	1,621	1,554
Total passenger revenue	7,559	7,508
Cargo	227	264
Other operating revenue	935	830
Total revenue	8,721	8,602
Operating expense:
Aircraft fuel	3,050	3,229
Salaries and related costs	2,127	1,897
Regional capacity purchase	588	616
Landing fees and other rent	497	469
Aircraft maintenance materials and outside repairs	438	407
Depreciation and amortization	408	380
Distribution expenses	328	337
Aircraft rent	240	251
Special charges	92	164
Other operating expenses	1,217	1,123
Total operating expenses	8,985	8,873
Operating loss	(264)	(271)
Nonoperating income (expense):
Interest expense	(201)	(216)
Interest capitalized	11	8
Interest income	5	5
Miscellaneous, net	23	27
Total other income (expense)	(162)	(176)
Loss before income taxes	(426)	(447)
Income tax expense (benefit)	(9)	1
Net loss	(417)	(448)
Loss per share, basic and diluted	$ (1.26)	$ (1.36)
United Airlines, Inc.
Operating revenue:
Passenger - Mainline	5,938	5,954
Passenger - Regional	1,621	1,554
Total passenger revenue	7,559	7,508
Cargo	227	264
Other operating revenue	937	832
Total revenue	8,723	8,604
Operating expense:
Aircraft fuel	3,050	3,229
Salaries and related costs	2,127	1,897
Regional capacity purchase	588	616
Landing fees and other rent	497	469
Aircraft maintenance materials and outside repairs	438	407
Depreciation and amortization	408	380
Distribution expenses	328	337
Aircraft rent	240	251
Special charges	92	164
Other operating expenses	1,217	1,122
Total operating expenses	8,985	8,872
Operating loss	(262)	(268)
Nonoperating income (expense):
Interest expense	(203)	(217)
Interest capitalized	11	8
Interest income	5	5
Miscellaneous, net	85	42
Total other income (expense)	(102)	(162)
Loss before income taxes	(364)	(430)
Income tax expense (benefit)	(2)	1
Net loss	$ (362)	$ (431)