Air distance from Ottawa, Canada to Hanoi, Vietnam is 7857.9 Miles (12646.1 Kilometers / 6823.8 Nautical Miles).
16 hrs, 19 mins is the flight duration between Ottawa and Hanoi. 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.