(Available Seat-Miles in Millions per FTE)
| 2006 Rank | Network | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | Change 2001-2006 |
|---|---|---|---|---|---|---|---|---|
| 1 | Northwest | 166 | 176 | 188 | 200 | 214 | 235 | 69 |
| 2 | Delta | 159 | 167 | 169 | 188 | 214 | 229 | 70 |
| 3 | Continental | 169 | 176 | 182 | 198 | 220 | 229 | 60 |
| 4 | United | 147 | 157 | 188 | 207 | 213 | 225 | 78 |
| 5 | Alaska | 148 | 159 | 173 | 188 | 205 | 210 | 62 |
| 6 | US Airways | 131 | 141 | 160 | 174 | 203 | 205 | 74 |
| 7 | American | 138 | 147 | 161 | 184 | 193 | 197 | 59 |
| 7-Carrier Average | 149 | 159 | 172 | 192 | 208 | 218 | 69 |
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.