Air distance from Chicago, USA to Choibalsan, Mongolia is 6109 Miles (9831.5 Kilometers / 5305.1 Nautical Miles).
12 hrs, 41 mins is the flight duration between Chicago 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.