boeing 737 cost per flight hour
âIn the case of SpiceJet, the maintenance cost per flight hour is about $1,300, which is over 50 per cent higher than any other aircraft of its type and the same as its Boeing 737 aircraft. Maintenance cost of any aircraft of Q400âs size should be about $800 per flight hour,â said the source.The Gurgaon-based low-cost airline operates a fleet of 15 Bombardier Q400 aircraft, to connect cities that are in the one-and-a-half hour flying range of larger airport cities like Hyderabad and Chennai.n official source in the know, said that the maintenance cost per flight hour for a 70-seater Q400 type aircraft should be about $800.