Flights from Washington, D.C. to London available from USD 465*

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

Jul 2026
FromUSD 773*
Fare: Round trip/Economy
Aug 2026
FromUSD 662*
Fare: Round trip/Economy
Sep 2026
FromUSD 481*
Fare: Round trip/Economy
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    • *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)
    Sep 23 2026 - Oct 03 2026
    From
    USD 545
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LON)
    Sep 09 2026 - Sep 17 2026
    From
    USD 481
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 29 2026 - Oct 09 2026
    From
    USD 545
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 25 2026 - Oct 03 2026
    From
    USD 545
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 25 2026 - Oct 04 2026
    From
    USD 545
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 10 2026 - Sep 19 2026
    From
    USD 552
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 08 2026 - Sep 24 2026
    From
    USD 552
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 23 2026 - Sep 29 2026
    From
    USD 552
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 09 2026 - Sep 24 2026
    From
    USD 552
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LON)
    Oct 03 2026 - Oct 10 2026
    From
    USD 502
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LON)
    Oct 01 2026 - Oct 06 2026
    From
    USD 504
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LON)
    Sep 30 2026 - Oct 06 2026
    From
    USD 504
    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.
     

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

    USD
    Plan ahead for your trip from Washington, D.C. to London with Icelandair
    From
    To
    Fare type
    Dates
    Price
    Washington, D.C. (IAD)London (LHR)Round trip
    /
    Economy    		Mar 20 2027 - Mar 27 2027

    From

    USD 1,120

    Viewed 1 hour ago

    Washington, D.C. (IAD)London (LHR)Round trip
    /
    Economy    		Mar 21 2027 - Mar 27 2027

    From

    USD 1,121

    Viewed 1 hour ago

    Washington, D.C. (IAD)London (LHR)Round trip
    /
    Economy    		Feb 04 2027 - Feb 17 2027

    From

    USD 779

    Viewed 23 hrs ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Feb 08 2027 - Feb 19 2027

    From

    USD 759

    Viewed 19 hrs ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Feb 08 2027 - Feb 22 2027

    From

    USD 759

    Viewed 19 hrs ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Feb 08 2027 - Mar 02 2027

    From

    USD 759

    Viewed 19 hrs ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Feb 08 2027 - Mar 03 2027

    From

    USD 759

    Viewed 19 hrs ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Feb 08 2027 - Mar 06 2027

    From

    USD 759

    Viewed 19 hrs ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Feb 10 2027 - Feb 19 2027

    From

    USD 759

    Viewed 19 hrs ago

    *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.