Cheap flights from Washington D.C to London-Heathrow
Cheap return flights from Washington D.C to London-Heathrow
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
London-Heathrow flight facts
What you need to know
What are the cheapest airlines?
- Norwegian Air
- British Airways
- Icelandair
These airlines usually offer the cheapest flights from Washington D.C to London-Heathrow.
What airlines fly indirectly?
- American Airlines
- Delta Airlines
- United Airlines
These airlines fly from Washington D.C to London-Heathrow, but you’ll have at least one layover.
How long is the flight?
7 hours 30 minutes
This is the shortest flight time from Washington D.C to London-Heathrow.
Alternative flights from the UK to London-Heathrow
Check out prices for other routes
Alternative flights from Washington D.C
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the Washington D.C/London-Heathrow route. There are around 35 flights on any given week from the UK to London-Heathrow and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from Washington D.C to London-Heathrow
Tips and advice from our flight experts
You've searched for flights from Washington D.C. to London-Heathrow. We've found 25 flights and compared them to give you the best offer. Norwegian Air is, on average, the cheapest for this route, so keep an eye on them. The cheapest offer we've found is a one-way ticket for £54 from Washington D.C. to London-Heathrow on 13/05/2026 at 02:35.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 15 airlines that operate the 6,000 km flight from Washington D.C. to London-Heathrow.
To find the best offers, book at least 2-3 months in advance or look for last-minute deals. Consider flying with Norwegian Air, which is popular and budget-friendly. The average flight duration is about 7 hours 30 minutes. After selecting an offer, fill out your information and proceed to payment. Don't forget to check our flight + hotel service to save time and money!
Other popular destinations near London-Heathrow
Where other people are flying to
