| System Total Operating Expense per Available Seat Mile (CASM) | ||||||||||||||
| Cents per Available Seat Mile | ||||||||||||||
| 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | ||
| American | 9.44 | 9.04 | 9.36 | 9.37 | 9.40 | 10.48 | 11.88 | 11.14 | 11.41 | 10.94 | 11.93 | 12.46 | 13.03 | |
| Continental | 8.62 | 9.26 | 9.23 | 9.40 | 9.50 | 10.20 | 10.24 | 10.15 | 9.60 | 12.44 | 13.07 | 13.46 | 13.60 | |
| Delta | 8.85 | 9.53 | 9.06 | 9.03 | 9.10 | 9.42 | 10.03 | 10.21 | 12.75 | 12.91 | 12.93 | 13.80 | 14.27 | |
| Northwest | 9.12 | 9.19 | 9.04 | 9.66 | 9.14 | 9.94 | 10.54 | 10.62 | 10.62 | 12.79 | 14.37 | 13.74 | 13.46 | |
| United | 8.87 | 9.33 | 9.53 | 9.24 | 9.40 | 10.59 | 12.03 | 11.38 | 10.95 | 11.60 | 12.51 | 13.20 | 13.46 | |
| US Airways | 11.50 | 12.79 | 13.53 | 13.30 | 13.94 | 13.85 | 14.13 | 13.89 | 13.93 | 13.74 | 13.90 | 14.60 | 15.21 | |
| America West | 7.25 | 7.78 | 7.32 | 7.34 | 7.59 | 8.56 | 9.26 | 8.09 | 7.89 | 8.24 | 11.53 | - | - | |
| --sub Network | 9.20 | 9.52 | 9.56 | 9.56 | 9.61 | 10.42 | 11.30 | 10.94 | 11.29 | 11.95 | 12.82 | 13.38 | 13.71 | |
| Southwest | 6.96 | 7.48 | 7.36 | 7.31 | 7.47 | 7.72 | 7.51 | 7.39 | 7.59 | 7.76 | 7.92 | 8.79 | 9.09 | |
| jetBlue | - | - | - | - | - | 8.70 | 6.69 | 6.44 | 6.06 | 6.08 | 6.91 | 7.86 | 8.33 | |
| AirTran | - | - | 8.35 | 8.28 | 7.70 | 9.18 | 9.25 | 8.35 | 8.23 | 8.40 | 9.34 | 9.74 | 9.57 | |
| Frontier | 8.99 | 9.05 | 8.72 | 8.39 | 7.86 | 9.15 | 9.11 | 9.13 | 8.37 | 9.59 | 10.47 | 10.90 | 10.68 | |
| ATA | 5.21 | 5.76 | 5.82 | 5.85 | 6.43 | 7.25 | 7.74 | 7.37 | 6.80 | 9.51 | 11.34 | 9.66 | 4.46 | |
| -- sub LCC | 6.53 | 6.92 | 7.10 | 7.12 | 7.31 | 7.81 | 7.71 | 7.47 | 7.38 | 7.96 | 8.37 | 8.92 | 8.90 | |
| Alaska | 7.85 | 8.23 | 8.58 | 8.25 | 8.75 | 10.24 | 10.20 | 9.88 | 9.74 | 10.23 | 10.87 | 12.01 | 12.17 | |
| Hawaiian | 7.46 | 7.50 | 7.40 | 7.34 | 8.37 | 8.35 | 7.90 | 10.52 | 8.96 | 9.81 | 10.21 | 10.80 | 10.53 | |
| Midwest | 10.90 | 11.97 | 12.17 | 11.88 | 11.49 | 12.99 | 12.95 | 11.72 | 11.16 | 10.41 | 10.74 | 11.22 | 12.27 | |
| -- sub Other | 8.04 | 8.40 | 8.65 | 8.41 | 8.97 | 10.05 | 9.88 | 10.23 | 9.70 | 10.16 | 10.71 | 11.63 | 11.80 | |
| Total All Sectors | 8.98 | 9.29 | 9.35 | 9.31 | 9.39 | 10.15 | 10.85 | 10.47 | 10.65 | 11.26 | 12.00 | 12.51 | 12.71 | |
| Note: Shaded data means data appear questionable. | ||||||||||||||
| Data Source: US DOT Form 41 via BTS, Schedule T2 & P6. | ||||||||||||||