Air distance from Chicago, USA to Rio Branco, Brazil is 3749.3 Miles (6034 Kilometers / 3255.9 Nautical Miles).
Flight duration time from Chicago to Rio Branco is 7 hrs, 47 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.