Air distance from Washington DC, USA to Muscat, Oman is 7271.4 Miles (11702.2 Kilometers / 6314.5 Nautical Miles).
15 hrs, 5 mins is the flight duration between Washington DC and Muscat. 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.