Air distance from Saint-Denis, Reunion (French) to Seoul, South Korea is 6136.2 Miles (9875.2 Kilometers / 5328.7 Nautical Miles).
12 hrs, 44 mins is the flight duration between Saint-Denis and Seoul. 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.