System Passenger Revenue per Equivalent Seat Mile (PRESM)
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 2012 2013 2014 2015 2016
American              9.91            10.32            10.66            10.84            10.23            11.35            10.21              9.00              9.31              9.45            10.21            11.06            11.39            11.82            10.48            11.55            12.28         12.86         13.25         13.55         12.32         11.80
Continental              7.91              8.95              9.55              9.65              9.58            10.69              9.79              9.57              9.67              9.86            10.58            11.38            12.01            12.79            11.02            12.57            13.78                -                  -                  -                  -                  -  
Delta              8.32              8.51              8.71              8.82              8.71              9.27              8.08              7.83              8.28              8.11              8.39              9.66            10.64            11.45              9.78            10.96            11.85         12.35         12.64         13.09         12.59         11.90
Northwest              8.89              9.11              8.96              8.17              8.50              9.10              8.22              8.09              8.16              8.69              9.15            10.03            10.32            10.97              9.16                   -                     -                  -                  -                  -                  -                  -  
United              9.17              9.70              9.87              9.67              9.59            10.47              9.08              8.71              8.69              9.17            10.09            10.88            11.72            12.16            10.40            12.75            14.00         14.05         14.49         14.89         14.17         13.25
US Airways              8.75              9.68              9.94            10.00              9.40              9.38              8.23              7.80              8.32              8.12              8.09            14.56            13.08              9.96              8.61              9.64            10.61         10.97         11.26         11.52                -                  -  
America West              6.72              6.90              6.98              7.25              7.52              7.77              7.04              7.05              7.57              7.32              8.10                   -                     -                     -                     -                     -                     -                  -                  -                  -                  -                  -  
 --sub Network           8.90           9.35           9.55           9.49           9.31         10.04           8.95           8.49           8.74           8.90           9.47         10.46         11.03         11.60           9.99         11.45         12.43      12.83      13.20      13.58      13.00      12.31
Southwest              5.18              5.50              5.65              5.80              6.01              6.53              5.93              5.66              5.82              5.92              6.29              6.98              6.98              7.47              7.34              8.46              9.14           9.21           9.83         10.43         10.34         10.06
jetBlue                   -                     -                     -                     -                     -                6.99              7.41              8.15              7.94              7.31              7.73              8.13              8.34              9.43              8.79              9.57            10.58         10.85         11.07         11.29         11.46         10.81
AirTran                   -                     -                6.53              5.82              6.28              7.72              7.39              6.44              6.77              6.49              7.10              7.38              7.70              8.13              7.22              7.91              8.58                -                  -                  -                  -                  -  
Frontier              5.46              6.74              6.37              7.76              8.09            10.14              8.70              8.04              7.66              7.49              8.26              8.28              8.14              8.97              7.76              9.01            11.11           8.86           9.13           8.76           7.10           5.63
Virgin America                   -                     -                     -                     -                     -                     -                     -                     -                     -                     -                     -                     -                1.50              8.13              8.18              9.96            11.22         11.23         11.65         11.84         11.53         11.06
 -- sub LCC           5.18           5.53           5.75           5.94           6.17           6.82           6.26           6.01           6.26           6.30           6.77           7.35           7.42           8.13           7.67           8.73           9.60        9.71      10.27      10.71      10.50      10.04
Alaska              6.43              6.80              7.38              7.42              7.74              8.37              7.98              7.77              7.96              8.13              8.74              9.39              9.43              9.87              9.57            10.32            11.10         11.56         11.42         11.58         11.05         10.60
Hawaiian              3.92              4.03              4.03              4.12              6.86              4.40              4.50              5.95              6.72              7.49              7.62              7.59              7.58              8.62              7.57              8.31              9.53           9.53           9.65           9.86           9.48           9.84
Spirit              7.00              5.80              5.26              6.75              6.75              6.77              7.12              7.06              7.74              7.34              7.79              8.39              7.56              7.33              6.69              6.36              6.95           6.45           6.76           6.74           5.43           4.69
Allegiant                   -                     -                     -                     -                     -                     -                     -                     -                     -                3.87              5.67              6.22              6.44              6.88              6.26              6.76              7.59           7.60           7.95           8.08           7.03           6.24
 -- sub Other           5.97           6.17           6.49           6.66           7.46           7.14           7.02           7.40           7.64           7.89           8.38           8.78           8.57           9.04           8.47           8.95           9.75        9.74        9.70        9.76        8.81        8.29
Base Length of Haul                839                869                886                909                931                935                955                967            1,005            1,039            1,060            1,085            1,092            1,114            1,125            1,153            1,167         1,184         1,195         1,199         1,186         1,174
Note:   Stage Length Adjustment formula:  ((observed length of haul/base length of haul [15 carrier average])^.5) times respective carrier PRASM.
Data Source:  US DOT Form 41 via BTS, Schedules P12 & T2.