Air distance from Saint-Denis, Reunion (French) to Belgrade, Serbia is 5004.6 Miles (8054.2 Kilometers / 4346 Nautical Miles).
Flight duration time from Saint-Denis to Belgrade is 10 hrs, 23 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.