Compared to the average fuel costs for all Commercial aircraft, which are $16.79* per nautical mile and 11.63Â¢* per seat per nautical mile, the Boeing 737-800 costs: 1  $3.55 less per nautical mile (a 21% margin).2  3.46Â¢ less per seat per nautical mile (a 30% margin).ompared to the average Turbofan-powered Narrow-body Commercial Passenger Plane, which can take off with 6,500 ft of runway and land with 4,448 ft, the Boeing 737-800: 1  Needs 1,374 ft more (a 21% margin).