Air distance from Hanoi, Vietnam to Bucharest, Romania is 4706.6 Miles (7574.6 Kilometers / 4087.2 Nautical Miles).
9 hrs, 46 mins is the flight duration between Hanoi and Bucharest. 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.