Table 15. System* Passenger Revenue Yield (Cents per Mile),,,,,,, Low-Cost Carriers,,,,,,, Ranked by 2nd Quarter 2007 Revenue Yield ,,,,,,, (Passenger Revenue per Revenue Passenger 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 Passenger Revenue $(Millions) 1,AirTran,13.8,12.9,12.8,13.2,13.0,586 2,Southwest,13.0,12.4,12.7,12.7,12.7,"2,414" 3,ATA,13.0,13.1,12.3,12.0,11.3,176 4,Frontier,11.3,11.8,11.7,11.4,11.1,290 5,America West,12.0,11.6,11.7,11.7,11.0,689 6,Spirit,12.2,10.9,11.1,10.8,10.2,180 7,JetBlue,9.8,9.7,10.2,9.5,10.1,682 ,Seven-Carrier Total,12.3,11.9,12.1,11.9,11.8,"5,019" Source: Bureau of Transportation Statistics; Form 41; Schedule P1.2. T100; T2 Data,,,,,,, * System = domestic + international,,,,,,, ,,,,,,,