Air distance from Sofia Bulgaria to Hanoi Vietnam is 4870.3 Miles (7837.9 Kilometers / 4229.3 Nautical Miles).
Flight duration time from Sofia Bulgaria to Hanoi Vietnam is 10 hrs, 6 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.