Air distance from Hanoi, Vietnam to Phnom Penh, Cambodia is 671.8 Miles (1081.2 Kilometers / 583.4 Nautical Miles).
1 hrs, 36 mins is the flight duration between Hanoi and Phnom Penh. 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.