London to Washington flights
Heathrow (LHR), United Kingdom → Washington Dulles International (IAD), United States
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 | $320 |
| Tue 8 Dec | $345 |
| Wed 6 Jan | $360 |
| Sat 2 Jan | $362 |
| Mon 14 Dec | $370 |
One-way economy, estimated by Flight Wiki's fare model; typical day about $448. Prices change often, so check live prices before booking.
Questions
How long is the flight from London to Washington?
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 London to Washington?
One-way economy fares are estimated between $320 and $658 over the coming weeks, about $448 on a typical day. Check live prices before you book.
What is the cheapest day to fly from London to Washington?
In our estimates Tuesday is usually the cheapest day. The cheapest dates right now are Wed 9 Dec, Tue 8 Dec, Wed 6 Jan.
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