| System Total Expense (Excluding Fuel) per Equivalent Seat Mile (CESM ex fuel) | ||||||||||||||||||
| STAGE LENGTH ADJUSTED | ||||||||||||||||||
| Cents per Equivalent Seat Mile | ||||||||||||||||||
| 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | ||
| American | 9.79 | 9.14 | 9.47 | 9.69 | 9.65 | 10.17 | 11.56 | 10.58 | 10.74 | 9.81 | 9.88 | 9.97 | 10.28 | 11.54 | 11.31 | 11.32 | 12.29 | |
| Continental | 7.47 | 8.14 | 8.32 | 9.03 | 9.39 | 9.62 | 9.90 | 10.12 | 9.22 | 11.99 | 11.88 | 11.92 | 11.96 | 12.51 | 12.36 | 12.97 | 12.95 | |
| Delta | 7.42 | 7.88 | 7.44 | 7.66 | 7.78 | 7.92 | 8.50 | 8.75 | 11.09 | 10.76 | 10.10 | 10.99 | 11.48 | 12.13 | 12.20 | 11.20 | 11.77 | |
| Northwest | 7.98 | 7.77 | 7.68 | 8.51 | 7.93 | 8.15 | 8.78 | 8.99 | 8.62 | 9.91 | 10.62 | 9.46 | 9.37 | 11.09 | 10.71 | - | - | |
| United | 8.79 | 9.04 | 9.31 | 9.20 | 9.33 | 10.26 | 11.81 | 11.46 | 10.65 | 10.81 | 11.08 | 11.16 | 11.27 | 13.00 | 11.86 | 13.26 | 14.67 | |
| US Airways | 8.58 | 9.43 | 10.09 | 10.05 | 10.51 | 10.05 | 10.60 | 10.69 | 10.91 | 10.38 | 9.48 | 16.49 | 14.80 | 13.37 | 11.66 | 11.71 | 12.16 | |
| America West | 5.74 | 6.16 | 5.91 | 6.28 | 6.44 | 6.91 | 7.75 | 6.94 | 6.56 | 6.46 | 8.86 | - | - | - | - | - | - | |
| --sub Network | 8.39 | 8.52 | 8.61 | 8.86 | 8.92 | 9.29 | 10.26 | 10.04 | 10.21 | 10.39 | 10.42 | 10.63 | 10.85 | 12.22 | 11.68 | 11.88 | 12.60 | |
| Southwest | 4.13 | 4.33 | 4.34 | 4.53 | 4.62 | 4.60 | 4.56 | 4.61 | 4.71 | 4.72 | 4.70 | 4.91 | 4.98 | 5.15 | 5.52 | 5.82 | 6.05 | |
| jetBlue | - | - | - | - | - | 7.00 | 5.81 | 6.02 | 5.59 | 5.37 | 5.50 | 5.46 | 5.53 | 6.17 | 6.46 | 6.62 | 6.65 | |
| AirTran | - | - | 7.59 | 5.51 | 4.90 | 5.14 | 5.36 | 4.95 | 4.98 | 5.13 | 5.24 | 5.04 | 5.00 | 5.08 | 5.33 | 5.63 | 5.94 | |
| Frontier | 6.56 | 7.58 | 7.69 | 6.80 | 6.54 | 7.29 | 7.55 | 7.40 | 6.55 | 7.41 | 7.29 | 7.14 | 6.84 | 6.64 | 6.58 | 8.37 | 9.12 | |
| Virgin America | - | - | - | - | - | - | - | - | - | - | - | - | - | 13.39 | 7.22 | 7.51 | 7.92 | |
| -- sub LCC | 4.17 | 4.41 | 4.57 | 4.73 | 4.76 | 4.82 | 4.84 | 4.86 | 4.95 | 5.05 | 5.07 | 5.19 | 5.25 | 5.66 | 5.82 | 6.18 | 6.40 | |
| Alaska | 6.38 | 6.45 | 6.74 | 6.75 | 7.00 | 7.90 | 8.10 | 8.07 | 7.84 | 7.65 | 7.59 | 8.21 | 8.24 | 8.48 | 9.34 | 8.91 | 10.16 | |
| Hawaiian | 3.90 | 3.88 | 4.03 | 4.07 | 7.91 | 4.68 | 4.82 | 6.62 | 5.99 | 6.23 | 6.10 | 6.08 | 5.90 | 5.50 | 6.11 | 6.52 | 7.26 | |
| Allegiant | - | - | - | - | - | - | - | - | - | 8.01 | 7.75 | 4.02 | 3.93 | 4.40 | 4.40 | 4.50 | 4.99 | |
| -- sub Other | 5.86 | 5.86 | 6.09 | 6.13 | 7.23 | 6.95 | 7.20 | 7.83 | 7.28 | 7.43 | 7.34 | 7.46 | 7.31 | 7.34 | 7.95 | 7.77 | 8.71 | |
| Base Length of Haul | 839 | 869 | 887 | 910 | 931 | 935 | 955 | 966 | 1,005 | 1,039 | 1,061 | 1,087 | 1,093 | 1,115 | 1,126 | 1,154 | 1,170 | |
| Note: Stage Length Adjustment formula: ((observed length of haul/base length of haul [15 carrier average])^.5) times respective carrier unit cost. | ||||||||||||||||||
| Data Source: US DOT Form 41 via BTS, Schedules P52, P6 & T2. | ||||||||||||||||||