Washington to London flights
Washington Dulles International (IAD), United States → Heathrow (LHR), United Kingdom
Set a price watch there and get an email or notification when the fare drops.
Cheapest dates in the next few weeks
| Wed 9 Dec | $332 |
| Tue 8 Dec | $358 |
| Sat 12 Dec | $369 |
| Sat 2 Jan | $373 |
| Mon 7 Dec | $374 |
One-way economy, estimated by Flight Wiki's fare model; typical day about $471. Prices change often, so check live prices before booking.
Questions
How long is the flight from Washington to London?
About 7h 43m nonstop. The distance is 5,902 km (3,667 miles). Flights with a stop take longer.
How much is a flight from Washington to London?
One-way economy fares are estimated between $332 and $646 over the coming weeks, about $471 on a typical day. Check live prices before you book.
What is the cheapest day to fly from Washington to London?
In our estimates Wednesday is usually the cheapest day. The cheapest dates right now are Wed 9 Dec, Tue 8 Dec, Sat 12 Dec.
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