Air distance from Unalaska, USA to Riyadh, Saudi Arabia is 6708 Miles (10795.5 Kilometers / 5825.2 Nautical Miles).
Flight duration time from Unalaska to Riyadh is 13 hrs, 55 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.