Air distance from Saint-Denis, Reunion (French) to Tokyo, Japan is 6715.4 Miles (10807.5 Kilometers / 5831.7 Nautical Miles).
Flight duration time from Saint-Denis to Tokyo is 13 hrs, 56 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.