Flights from Washington, D.C. to London available from USD 456*

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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)
Jan 09 2026 - Jan 14 2026
From
USD 456
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Dec 09 2025 - Dec 15 2025
From
USD 486
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Nov 04 2025 - Nov 08 2025
From
USD 521
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Dec 06 2025 - Dec 11 2025
From
USD 521
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Dec 02 2025 - Dec 10 2025
From
USD 521
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Nov 13 2025 - Dec 03 2025
From
USD 522
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Jan 19 2026 - Feb 03 2026
From
USD 577
Round trip
Economy

Washington, D.C. (IAD)to

London (LHR)
Dec 17 2025 - Dec 23 2025
From
USD 724
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Jan 08 2026 - Jan 21 2026
From
USD 518
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Jan 08 2026 - Jan 24 2026
From
USD 518
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Jan 08 2026 - Jan 26 2026
From
USD 518
Round trip
Economy

Washington, D.C. (IAD)to

London (LON)
Jan 08 2026 - Jan 27 2026
From
USD 518
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.

 

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Plan ahead for your trip from Washington, D.C. to London with Icelandair

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Plan ahead for your trip from Washington, D.C. to London with Icelandair
From
To
Fare type
Dates
Price

*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.

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.