Air distance from Saint-Denis, Reunion (French) to Athens, Greece is 4540.5 Miles (7307.2 Kilometers / 3943 Nautical Miles).
Flight duration time from Saint-Denis to Athens is 9 hrs, 25 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.