![Figure 7: Cost per Gallon of Fuel and Available Seat Miles on Domestic Flight Segments Operated by Both Legacy and Low Cost Carriers - January 1990 to March 2011 | Bureau of Transportation Statistics Figure 7: Cost per Gallon of Fuel and Available Seat Miles on Domestic Flight Segments Operated by Both Legacy and Low Cost Carriers - January 1990 to March 2011 | Bureau of Transportation Statistics](https://www.bts.gov/sites/bts.dot.gov/files/legacy/publications/special_reports_and_issue_briefs/special_report/2012_03_33/images/figure_07.gif)
Figure 7: Cost per Gallon of Fuel and Available Seat Miles on Domestic Flight Segments Operated by Both Legacy and Low Cost Carriers - January 1990 to March 2011 | Bureau of Transportation Statistics
![Which aircraft have the lowest cost per available seat mile (CASM), and what are their numbers? - Quora Which aircraft have the lowest cost per available seat mile (CASM), and what are their numbers? - Quora](https://qph.cf2.quoracdn.net/main-qimg-69e0f0c41d5f0f2514ca35f2996426d7.webp)
Which aircraft have the lowest cost per available seat mile (CASM), and what are their numbers? - Quora
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Don't Be Fooled - Southwest Airlines Is A Lot More Expensive Than It Looks (NYSE:LUV) | Seeking Alpha
![Figure 9: Average Available Seat Miles per Gallon (ASM/g) of Fuel Among Low Cost Carriers - Q1 2000 to Q4 2010 | Bureau of Transportation Statistics Figure 9: Average Available Seat Miles per Gallon (ASM/g) of Fuel Among Low Cost Carriers - Q1 2000 to Q4 2010 | Bureau of Transportation Statistics](https://www.bts.gov/sites/bts.dot.gov/files/legacy/publications/special_reports_and_issue_briefs/special_report/2012_03_33/images/figure_09.gif)