(ASMs in Millions per FTE)
| 2006 Rank | Low-Cost | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | Change 2001-2006 |
|---|---|---|---|---|---|---|---|---|
| 1 | JetBlue | 224 | 234 | 253 | 266 | 263 | 252 | 28 |
| 2 | ATA | 139 | 175 | 232 | 260 | 242 | 249 | 110 |
| 3 | Southwest | 179 | 174 | 182 | 205 | 227 | 242 | 63 |
| 4 | Spirit | 189 | 209 | 201 | 217 | 218 | 232 | 43 |
| 5 | AirTran | 134 | 153 | 164 | 179 | 206 | 223 | 89 |
| 6 | AmericaWest | 181 | 196 | 209 | 220 | 216 | 205 | 24 |
| 7 | Frontier | 171 | 180 | 186 | 184 | 188 | 198 | 27 |
| 7-Carrier Average | 172 | 181 | 196 | 215 | 226 | 232 | 60 |
Source: Bureau of Transportation Statistics, T-100 Segment Data
* Full-time Equivalent Employee (FTE) calculations count two part-time employees as one full-time employee.