Domestic Available Seat Miles as  a Percent of Total System Available Seat Miles
1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
American 70.5% 70.3% 70.3% 68.7% 68.6% 67.9% 67.9% 72.5% 70.5% 67.7% 65.4% 64.0% 63.9% 62.3% 61.3% 60.8% 59.4%
Continental 84.1% 81.7% 75.8% 71.0% 67.1% 65.3% 66.3% 65.2% 64.0% 61.7% 58.9% 56.8% 56.0% 53.4% 52.5% 51.4% 50.5%
Delta 76.8% 78.9% 79.5% 77.6% 77.8% 77.2% 75.9% 76.0% 77.3% 75.8% 73.6% 66.0% 61.4% 56.3% 55.0% 54.8% 53.5%
Northwest 60.8% 60.2% 59.6% 59.4% 60.7% 59.7% 59.8% 60.2% 61.4% 61.5% 60.1% 59.4% 57.6% 53.5% 54.6%
United 63.3% 63.2% 62.3% 63.2% 65.0% 62.7% 61.2% 63.4% 65.0% 64.3% 59.8% 60.7% 59.2% 57.0% 56.5% 55.4% 52.4%
US Airways 94.9% 92.8% 91.1% 89.7% 88.4% 86.8% 83.7% 81.0% 76.6% 74.9% 75.0% 71.9% 73.5% 78.3% 75.3% 73.6% 73.2%
America West 98.7% 96.8% 96.8% 97.2% 98.0% 98.1% 97.9% 97.1% 96.6% 96.7% 96.2% 96.7% 96.1%        
 --sub Network 72.8% 72.6% 71.8% 70.8% 70.9% 69.8% 69.2% 70.4% 70.2% 68.8% 66.4% 64.1% 62.3% 59.5% 58.6% 57.9% 56.4%
Southwest 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
jetBlue 100.0% 100.0% 100.0% 100.0% 98.8% 99.7% 100.0% 100.0% 97.9% 90.3% 85.1% 84.7%
AirTran 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 99.6% 99.6% 99.9% 100.0% 99.1% 95.6% 94.8%
Frontier 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 93.1% 92.2% 90.0% 91.8% 93.8% 93.4% 96.2%
Virgin America                         100.0% 100.0% 100.0% 100.0% 96.5%
 -- sub LCC 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 99.8% 99.4% 99.4% 99.2% 99.0% 97.7% 96.0% 95.9%
Alaska 93.3% 92.5% 92.5% 92.0% 91.6% 90.7% 90.9% 90.2% 90.2% 90.5% 90.6% 89.7% 88.9% 90.1% 91.6% 92.4% 91.6%
Hawaiian 94.3% 94.5% 95.0% 95.1% 94.1% 89.2% 91.3% 96.6% 98.5% 94.1% 91.7% 93.2% 94.7% 90.6% 89.1% 88.5% 74.9%
Allegiant           100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0% 100.0%
 -- sub Other 93.6% 93.0% 93.1% 92.8% 92.3% 90.3% 91.0% 91.9% 92.5% 91.7% 91.4% 91.3% 91.4% 91.3% 92.1% 92.5% 88.3%
Total All Sectors 74.8% 74.7% 74.2% 73.4% 73.7% 72.9% 72.8% 74.4% 74.8% 73.8% 72.3% 71.1% 70.4% 68.6% 68.0% 67.4% 66.4%
Source:  US DOT Form 41 via BTS, schedule T2.