Table 11: Low-Cost Airline System* Unit Costs ,,,,,,,
Low-Cost Airlines Ranked by 4th Quarter 2007 Unit Costs (Cents Per ASM) ,,,,,,,
(Operating Expenses per Available Seat Mile in cents),,,,,,,
4Q 2007 Rank,Low-Cost Airlines,4th Quarter 2006 ,1st Quarter 2007 ,2nd Quarter 2007 ,3rd Quarter 2007 ,4th Quarter 2007 ,4th Quarter Operating Expenses $(Millions)
1,Frontier,10.8,9.7,10.7,10.8,11.5,362
2,AirTran,9.2,9.4,9.4,9.5,9.9,569
3,Spirit,10.9,8.4,8.5,8.7,9.6,204
4,Southwest,8.8,8.9,9.0,9.1,9.4,"2,366"
5,Allegiant,7.8,7.6,8.2,8.6,8.8,93
6,JetBlue,7.9,8.3,8.0,8.3,8.8,711
7,America West,13.6,12.1,13.1,13.5,N/A,N/A
,Seven-Carrier Total,9.6,9.3,9.6,9.6,9.5,"4,304"
Source: Bureau of Transportation Statistics; Form 41; Schedule P1.2.  T100; T2 Data,,,,,,,
* System = domestic + international,,,,,,,
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