Air distance from Singapore, Singapore to Knoxville, USA is 9856.6 Miles (15862.7 Kilometers / 8559.5 Nautical Miles).
20 hrs, 28 mins is the flight duration between Singapore and Knoxville. 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.