Table 11.  System* Airline Unit Costs (Cents per Mile),,,,,,,
Low-Cost Carriers,,,,,,,
Ranked by 2nd Quarter 2007 Unit Costs ,,,,,,,
(Operating Expenses per Available Seat Mile in cents),,,,,,,
2Q 2007 Rank,Low-Cost Carriers,2nd Quarter 2006 ,3rd Quarter 2006 ,4th Quarter 2006 ,"1st
 Quarter 2007 ",2nd Quarter 2007 ,2nd Quarter Operating Expenses $(Millions)
1,America West,12.7,14.1,13.6,12.1,13.1,972
2,Frontier,11.0,11.1,10.8,9.7,10.7,343
3,AirTran,10.9,9.9,9.2,9.4,9.4,542
4,ATA,10.0,9.5,9.1,9.9,9.3,191
5,Southwest,8.9,8.7,8.8,8.9,9.0,"2,255"
6,Spirit,11.5,11.7,10.9,8.4,8.5,187
7,JetBlue,7.8,7.9,7.9,8.3,8.0,655
,Seven-Carrier Total,9.7,9.8,9.6,9.4,9.6,"5,145"
Source: Bureau of Transportation Statistics; Form 41; Schedule P1.2.  T100; T2 Data,,,,,,,
* System = domestic + international ,,,,,,,
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