CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Operating Revenues
Mainline	$ 819.9	$ 702.3	$ 1,522.3	$ 1,289.3
Regional	194.3	183.5	370.8	348.9
Total passenger revenue	1,014.2	885.8	1,893.1	1,638.2
Freight and mail	29.1	28.1	54.0	51.1
Other - net	66.9	62.3	128.3	116.5
Total Operating Revenues	1,110.2	976.2	2,075.4	1,805.8
Operating Expenses
Wages and benefits	242.8	239.6	492.1	478.9
Variable incentive pay	17.9	21.6	34.3	39.5
Aircraft fuel, including hedging gains and losses	397.5	255.0	592.0	462.3
Aircraft maintenance	49.1	53.8	102.4	110.8
Aircraft rent	29.0	35.4	59.5	72.4
Landing fees and other rentals	59.9	57.9	117.8	113.8
Contracted services	46.6	41.1	90.1	80.7
Selling expenses	45.8	38.2	85.6	71.8
Depreciation and amortization	61.7	58.0	122.0	114.2
Food and beverage service	17.1	14.3	32.2	26.6
Other	58.2	48.2	118.9	96.0
Fleet transition costs	26.8	3.4	36.9	3.4
Total Operating Expenses	1,052.4	866.5	1,883.8	1,670.4
Operating Income	57.8	109.7	191.6	135.4
Nonoperating Income (Expense)
Interest income	6.3	7.7	13.9	15.1
Interest expense	(20.0)	(26.3)	(43.4)	(51.9)
Interest capitalized	1.6	1.6	3.4	3.3
Other - net	1.3	1.3	2.2	2.3
Nonoperating Income (Expense) Total	(10.8)	(15.7)	(23.9)	(31.2)
Income before income tax	47.0	94.0	167.7	104.2
Income tax expense	18.2	35.4	64.7	40.3
Net Income	$ 28.8	$ 58.6	$ 103.0	$ 63.9
Basic Earnings Per Share:	$ 0.8	$ 1.64	$ 2.86	$ 1.79
Diluted Earnings Per Share:	$ 0.78	$ 1.6	$ 2.8	$ 1.74
Shares used for computation:
Basic	35,983	35,698	35,988	35,683
Diluted	36,737	36,697	36,775	36,631