Air distance from Tucson, USA to Choibalsan, Mongolia is 6241 Miles (10044 Kilometers / 5419.7 Nautical Miles).
12 hrs, 57 mins is the flight duration between Tucson and Choibalsan. 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.