>How much of the cost of a flight is fuel? In terms of flight operating costs (FOC) per hour, about 16-36% according to the numbers for a 737-500 across for Co

>How much of the cost of a flight is fuel? In terms of flight operating costs (FOC) per hour, about 16-36% according to the numbers for a 737-500 across for Continental/United/Southwest a few years ago. It's very dependent on utilization. Fixed ownership (i.e. depreciation/leasing) costs start to dominate at low utilization rates. Boeing 737‐500 FOC per block hour (~2017): Crew Fuel Maint. Ownership Hrs/day Continental $510 $430(19%) $ 651 $698 3.9 United $927 $487(16%) $1048 $510 4.3 Southwest $388 $537(36%) $ 251 $350 8.2 https://www.icao.int/mid/documents/2017/aviation%20data%20and%20analysis%20seminar/ppt3%20-%20airlines%20operating%20costs%20and%20productivity.pdf https://www.icao.int/mid/documents/2017/aviation%20data%20an...