Air distance from Hanoi, Vietnam to Tokyo, Japan is 2275.8 Miles (3662.5 Kilometers / 1976.3 Nautical Miles).
4 hrs, 43 mins is the flight duration between Hanoi and Tokyo. 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.