| 2007 Rank | Low-Cost | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | Change 2002-2007 |
|---|---|---|---|---|---|---|---|---|
| 1 | Frontier | 86 | 78 | 98 | 91 | 96 | 96 | 10 |
| 2 | America West | 78 | 83 | 82 | 84 | 83 | 93 | 15 |
| 3 | ATA | 114 | 106 | 106 | 105 | 124 | 89 | -25 |
| 4 | JetBlue | 98 | 80 | 97 | 97 | 94 | 78 | -20 |
| 5 | Southwest | 89 | 86 | 82 | 73 | 70 | 68 | -21 |
| 6 | Spirit | 83 | 83 | 77 | 72 | 62 | 60 | -23 |
| 7 | AirTran | 73 | 67 | 74 | 67 | 64 | 59 | -14 |
| 7-Carrier Average | 88 | 85 | 85 | 79 | 77 | 73 | -15 |
Source: Bureau of Transportation Statistics, Form 41 Airline Financial Data
* Full-time Equivalent Employee (FTE) calculations count two part-time employees as one full-time employee.