Direct flights
from Washington (IAD)
to London (LHR)

Weekly schedule for flights between Washington Dulles Intl (Washington, United States) and Heathrow (London, United Kingdom) operated by 1 airlines.
33 weekly flights operate on this route flying 3,687mi in 7h15min.
Expect $631 in average for a one-way ticket with the cheapest option at $635.