Air distance from Milan, Italy to St. Louis, USA is 4791.3 Miles (7710.9 Kilometers / 4160.8 Nautical Miles).
Flight duration time from Milan to St. Louis is 9 hrs, 56 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.