Air distance from Ottawa, Canada to Vientiane, Laos is 8093 Miles (13024.4 Kilometers / 7028 Nautical Miles).
16 hrs, 48 mins is the flight duration between Ottawa and Vientiane. 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.