Flights from Washington, D.C. to London available from USD 800*
expand_more
1 Passenger
expand_morePromo code
expand_moretoday
today
Our best rates from Washington, D.C. to London
location_on
location_on
Fly in the next 3 months: flights from Washington, D.C. to London (LON)
Icelandair airfare from Washington, D.C. to London - starting at USD 800
flight_takeoff
flight_land
USD
Washington, D.C. (IAD)to
London (LON)Dec 10 2026 - Dec 16 2026
From
USD 800
Viewed 1 day ago
Round trip
Economy
Washington, D.C. (IAD)to
London (LON)Dec 10 2026 - Dec 22 2026
From
USD 800
Viewed 1 day ago
Round trip
Economy
Washington, D.C. (IAD)to
London (LON)Nov 02 2026 - Nov 18 2026
From
USD 800
Viewed 1 day ago
Round trip
Economy
Washington, D.C. (IAD)to
London (LON)Nov 02 2026 - Nov 25 2026
From
USD 800
Viewed 1 day ago
Round trip
Economy
Washington, D.C. (IAD)to
London (LON)Nov 03 2026 - Nov 11 2026
From
USD 800
Viewed 1 day ago
Round trip
Economy
*Fares displayed have been collected within the last 72 hours 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. (IAD) to London (LON) in the next 365 days
Book ahead and find our best prices in 2026 and beyond
flight_takeoff
flight_land
USD
From | To | Fare type | Dates | Price | |
|---|---|---|---|---|---|
| Washington, D.C. (IAD) | London (LON) | Round trip / Economy | Dec 10 2026 - Dec 16 2026 | From USD 800 Viewed 1 day ago | |
| Washington, D.C. (IAD) | London (LON) | Round trip / Economy | Dec 10 2026 - Dec 22 2026 | From USD 800 Viewed 1 day ago | |
| Washington, D.C. (IAD) | London (LON) | Round trip / Economy | Nov 11 2026 - Nov 18 2026 | From USD 800 Viewed 1 day 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.
Make the most of your trip
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.
Flying with Icelandair: more than just a journey
Generous baggage allowances
Learn more
Entertainment for all ages
Learn more