Air distance from Kathmandu, Nepal to Tokyo, Japan is 3205.2 Miles (5158.3 Kilometers / 2783.4 Nautical Miles).
Flight duration time from Kathmandu to Tokyo is 6 hrs, 39 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.