Air distance from Chicago, USA to Bucharest, Romania is 5223.1 Miles (8405.8 Kilometers / 4535.8 Nautical Miles).
10 hrs, 50 mins is the flight duration between Chicago and Bucharest. 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.