Air distance from Saint-Denis, Reunion (French) to San Juan, Puerto Rico is 8627.2 Miles (13884.1 Kilometers / 7491.8 Nautical Miles).
Flight duration time from Saint-Denis to San Juan is 17 hrs, 54 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.