If you want to know how far it is between Washington DC and London, the straight line distance is 3,675 miles
or 5,915 kilometers
If you are a pilot flying a private plane, you can fly straight from Washington, DC to London, United Kingdom for a total flight time of 7 hours, 51 minutes
Book a flight:
If you're a traveler planning a trip and you want to book a commercial flight, you can try searching for flights between IAD and LHR.