Table 15: Low-Cost Airline System* Unit Revenue,,,,,,,
Low-Cost Airlines Ranked by 4th Quarter 2007 Unit Revenue (Cents Per ASM) ,,,,,,,
(Operating Revenue Per Available Seat Mile),,,,,,,
4Q 2007 Rank,Low-Cost Airlines,4th Quarter 2006 ,1st Quarter 2007 ,2nd Quarter 2007 ,3rd Quarter 2007 ,4th Quarter 2007 ,4th Quarter Operating Revenue $(Millions)
1,Frontier,10.1,9.5,10.7,11.5,10.6,334
2,AirTran,9.3,9.7,10.7,10.1,10.2,584
3,Southwest,9.5,9.3,10.3,10.1,9.9,"2,392"
4,JetBlue,8.7,8.1,9.0,9.2,9.1,739
5,Allegiant,8.4,8.9,9.3,9.3,9.0,96
6,Spirit,9.1,9.0,9.0,9.0,8.8,187
7,America West,12.6,12.7,12.8,13.0,N/A,N/A
,Seven-Carrier Total,9.8,9.6,10.5,10.3,9.7,"4,431"
"Source: Bureau of Transportation Statistics; Form 41, Schedule P1.2.  T100; T2 Data",,,,,,,
* System = domestic + international,,,,,,,