Air distance from Washington DC, USA to Maseru, Lesotho is 8165 Miles (13140.2 Kilometers / 7090.5 Nautical Miles).
16 hrs, 57 mins is the flight duration between Washington DC and Maseru. 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.