Air distance from Saint-Denis, Reunion (French) to Ottawa, Canada is 9170.8 Miles (14759 Kilometers / 7964 Nautical Miles).
Flight duration time from Saint-Denis to Ottawa is 19 hrs, 2 mins. 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.