Flights from Washington, D.C. to London available from USD 506*

Promo code

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

Jul 2025
FromUSD 637*
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 (LGW)
    Sep 05 2025 - Sep 14 2025
    From
    USD 572
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 01 2025 - Sep 17 2025
    From
    USD 506
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 01 2025 - Sep 16 2025
    From
    USD 506
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 01 2025 - Sep 19 2025
    From
    USD 506
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Sep 01 2025 - Sep 15 2025
    From
    USD 534
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LHR)
    Aug 29 2025 - Sep 17 2025
    From
    USD 746
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LON)
    Sep 30 2025 - Oct 15 2025
    From
    USD 521
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LON)
    Sep 30 2025 - Oct 31 2025
    From
    USD 521
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LON)
    Sep 30 2025 - Oct 12 2025
    From
    USD 521
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LON)
    Sep 30 2025 - Oct 04 2025
    From
    USD 521
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LON)
    Sep 30 2025 - Oct 11 2025
    From
    USD 521
    Round trip
    Economy

    Washington, D.C. (IAD)to

    London (LON)
    Sep 23 2025 - Oct 12 2025
    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

    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 (LGW)Round trip
    /
    Economy    		Jan 21 2026 - Feb 04 2026

    From

    USD 521

    Viewed 2 days ago

    Washington, D.C. (IAD)London (LGW)Round trip
    /
    Economy    		Jan 06 2026 - Jan 10 2026

    From

    USD 571

    Viewed 36 minutes ago

    Washington, D.C. (IAD)London (LHR)Round trip
    /
    Economy    		Jan 06 2026 - Jan 10 2026

    From

    USD 575

    Viewed 37 minutes ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Jan 22 2026 - Jan 27 2026

    From

    USD 521

    Viewed 2 days ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Jan 23 2026 - Jan 28 2026

    From

    USD 521

    Viewed 2 days ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Jan 23 2026 - Feb 01 2026

    From

    USD 521

    Viewed 2 days ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Jan 23 2026 - Feb 08 2026

    From

    USD 521

    Viewed 2 days ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Jan 24 2026 - Feb 05 2026

    From

    USD 521

    Viewed 2 days ago

    Washington, D.C. (IAD)London (LON)Round trip
    /
    Economy    		Jan 26 2026 - Feb 05 2026

    From

    USD 521

    Viewed 2 days 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.