Flights from Washington, D.C. to London available from USD 520*

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Our best rates from Washington, D.C. to London

*Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking

Fly in the next three months: flights from Washington, D.C. to London

USD

Washington, D.C. (IAD)to

London (LHR)
May 04 2026 - May 12 2026
From
USD 751
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Mar 04 2026 - Mar 10 2026
From
USD 829
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
May 04 2026 - May 10 2026
From
USD 1,006
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Apr 26 2026 - May 03 2026
From
USD 554
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Apr 26 2026 - May 05 2026
From
USD 554
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Apr 26 2026 - May 07 2026
From
USD 554
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Apr 26 2026 - May 12 2026
From
USD 554
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Apr 26 2026 - May 13 2026
From
USD 554
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Apr 26 2026 - May 19 2026
From
USD 554
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Apr 27 2026 - May 02 2026
From
USD 554
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Apr 27 2026 - May 03 2026
From
USD 554
Round trip
Economy

Washington, D.C. (IAD)to

London (LGW)
Feb 15 2026 - Feb 23 2026
From
USD 710
Round trip
Economy

*Fares displayed have been collected within the last 72hrs and may no longer be available at the time of booking. We display fares for Economy Light as standard but it is possible to change your class of service during the booking process. You can also add baggage, meals and extra legroom to your trip during booking.

 

Blue image with a map of Iceland and text that reads: Include a little more of Iceland in your journey. Add a Stopover

Flights from Washington, D.C. to London

Experience England’s iconic, eclectic capital with our flights from Washington, D.C. to London. With some of the shortest transatlantic flight times and cozy blankets and pillows onboard, you’ll arrive refreshed and ready to take in the city.

Plus, with Wi-Fi available across most of our fleet, you can stay connected in the clouds.

 

FAQs about travel from Washington, D.C. to London

Helpful information for travelers visiting London

What is the distance from Washington, D.C. to London, UK?

The distance between Washington Dulles International Airport (IAD) and London Heathrow Airport (LHR), is approximately 5,900 km or 3,700 miles.

How long is the flight from Washington, D.C. to London?

The Washington, D.C. to London flight time is usually around 7 hours 20 minutes. However, this does not account for any stopovers on your journey. Icelandair passengers traveling from Washington, D.C. to London will have a layover at Keflavík, so you can stretch your legs and get some fresh air.

How can I find cheap flights from Washington, D.C. to London?

Booking your flights during London’s off-season (January-April and September-November) can help you find cheap tickets from Washington, D.C. to London. For our latest offers, check out our latest flight deals.