Air distance from Frankfurt, Germany to Kathmandu, Nepal is 4220.3 Miles (6791.9 Kilometers / 3664.9 Nautical Miles).
Flight duration time from Frankfurt to Kathmandu is 8 hrs, 45 mins. This is the In-The-Air flight time. You should also add the taxi time, airport wait times and possible delays due to bad weather, etc. for the total flight duration time.