Table 11: Low-Cost Airline System* Unit Costs ,,,,,,,
Low-Cost Airlines Ranked by 2nd Quarter 2008 Unit Costs (Cents Per ASM) ,,,,,,,
(Operating Expenses per Available Seat Mile in cents),,,,,,,
2Q 2008 Rank,Low-Cost Airlines,2nd Quarter 2007 ,3rd Quarter 2007 ,4th Quarter 2007 ,1st Quarter 2008 ,2nd Quarter 2008,2nd Quarter Operating Expenses $(Millions)
1,Frontier,10.7,10.8,11.5,12.0,12.5,405
2,AirTran,9.4,9.5,9.9,10.9,11.4,739
3,JetBlue,8.0,8.3,8.8,9.5,10.1,850
4,Southwest,9.0,9.1,9.4,9.7,10.1,"2,664"
5,Spirit,8.5,8.7,9.6,9.8,8.1,178
6,Allegiant**,8.2,8.6,8.8,9.6,N/A,N/A
7,America West***,13.1,13.5,N/A,N/A,N/A,N/A
,Seven-Carrier Total,9.6,9.6,9.5,10.0,N/A,N/A
Source: Bureau of Transportation Statistics; Form 41; Schedule P1.2.  T100; T2 Data,,,,,,,
* System = domestic + international ,,,,,,,
** Allegiant Airlines requested confidentiality for its 2nd Quarter 2008 data. Allegiant’s numbers are included in previous quarter totals.,,,,,,,
*** America West Airlines and US Airways now operate under a single certificate and report jointly.  The combined airline’s financial numbers are included with the network carriers beginning with the fourth quarter of 2007.  US Airways’ previous numbers remain with network carriers and America West’s previous numbers are listed separately as a low-cost carrier.,,,,,,,