Air distance from Unalaska, USA to Semarang, Indonesia is 6315.8 Miles (10164.4 Kilometers / 5484.7 Nautical Miles).
Flight duration time from Unalaska to Semarang is 13 hrs, 6 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.