Flights from Washington, D.C. to London available from USD 447*

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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)
Mar 09 2026 - Mar 17 2026
From
USD 532
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Apr 15 2026 - Apr 24 2026
From
USD 548
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Mar 22 2026 - Apr 12 2026
From
USD 447
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Mar 22 2026 - Apr 09 2026
From
USD 547
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Apr 22 2026 - Apr 29 2026
From
USD 549
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Apr 18 2026 - May 06 2026
From
USD 555
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Apr 27 2026 - May 10 2026
From
USD 557
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Apr 20 2026 - May 10 2026
From
USD 557
Round trip
Economy

Washington, D.C. (IAD)to

London (LGW)
May 12 2026 - May 21 2026
From
USD 562
Round trip
Economy

Washington, D.C. (IAD)to

London (LGW)
May 13 2026 - May 21 2026
From
USD 562
Round trip
Economy

Washington, D.C. (IAD)to

London (LGW)
May 10 2026 - May 17 2026
From
USD 562
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Mar 02 2026 - Mar 11 2026
From
USD 528
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.