Air distance from Singapore, Singapore to Esfahan, Iran is 4009.3 Miles (6452.3 Kilometers / 3481.6 Nautical Miles).
8 hrs, 19 mins is the flight duration between Singapore and Esfahan. 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.