Table 15. System* Passenger Revenue Yield (Cents per Mile),,,,,,,
Low-Cost Carriers,,,,,,,
Ranked by 1st Quarter 2007 Revenue Yield ,,,,,,,
(Passenger Revenue per Revenue Passenger Mile in cents),,,,,,,
1Q 2007 Rank,Low-Cost Carriers,1st Quarter 2006 ,2nd Quarter 2006 ,3rd Quarter 2006 ,4th Quarter 2006 ,1st Quarter 2007 ,1st Quarter Passenger Revenue $(Millions)
1,AirTran,13.1,13.8,12.9,12.8,13.2,479
2,Southwest,12.4,13.0,12.4,12.7,12.7,"2,042"
3,ATA,13.4,13.0,13.1,12.3,12.0,156
4,America West,11.5,12.0,11.6,11.7,11.7,659
5,Frontier,11.3,11.3,11.8,11.7,11.4,239
6,Spirit,11.0,12.2,10.9,11.1,10.8,162
7,JetBlue,8.4,9.8,9.7,10.2,9.5,563
,Seven-Carrier Total,11.6,12.3,11.9,12.1,11.9,"4,300"
 Source: Bureau of Transportation Statistics; Form 41; Schedule P1.2.  T100; T2 Data,,,,,,,
* System = domestic + international ,,,,,,,