Air distance from Kiev, Ukraine to Saint-Denis, Reunion (French) is 5122.8 Miles (8244.4 Kilometers / 4448.7 Nautical Miles).
10 hrs, 38 mins is the flight duration between Kiev and Saint-Denis. 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.