Compared to the average Turbofan-powered Narrow-body Commercial Passenger Plane, which costs $12.68* per nautical mile and 11.35Â¢* per seat per nautical mile to operate, the Boeing 737-800 is:1  $0.57 more expensive per nautical mile (a 4.5% premium). 2  3.18Â¢ cheaper per seat per nautical mile (a 28% 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).