Air distance from Hiroshima, Japan to Denver, USA is 6187.4 Miles (9957.7 Kilometers / 5373.1 Nautical Miles).
12 hrs, 50 mins is the flight duration between Hiroshima and Denver. 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.