And to compare to military planes, the B-1B: https://en.wikipedia.org/wiki/Rockwell_B-1_Lancer https://en.wikipedia.org/wiki/Rockwell_B-1_Lancer "With upgrades

And to compare to military planes, the B-1B: https://en.wikipedia.org/wiki/Rockwell_B-1_Lancer https://en.wikipedia.org/wiki/Rockwell_B-1_Lancer "With upgrades to keep the B-1 viable, the air force may keep it in service until approximately 2038.[133] Despite upgrades, the B-1 has repair and cost issues; every flight hour needs 48.4 hours of repair. The fuel, repairs and other needs for a 12-hour mission costs $720,000 as of 2010.[134] The $63,000 cost per flight hour is, however, less than the $72,000 for the B-52 and the $135,000 of the B-2.[135] "