Air distance from Riga, Latvia to Ulaanbaatar, Mongolia is 3341.8 Miles (5378.1 Kilometers / 2902 Nautical Miles).
6 hrs, 56 mins is the flight duration between Riga and Ulaanbaatar. 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.