Air distance from Topeka, USA to Adelaide, Australia is 9488.2 Miles (15269.8 Kilometers / 8239.5 Nautical Miles).
Flight duration time from Topeka to Adelaide is 19 hrs, 42 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.