￥53,950 Cheap Flights from Washington (IAD) to London (LHR)

View ￥53,950 flight on Wed, Dec 31, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Heathrow Airport (LHR)

  • notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
  • deals illustration

    Book smarter

    Save up to 40% on select hotels after you book a flight*
  • trophy illustration

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Washington to London (IAD-LHR)

Prices were available within the past 7 days and start at ￥53,950 for one-way flights and ￥79,440 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Icelandair
Fri, Jan 30 - Mon, Feb 2
IAD
Washington
LHR
London
￥79,440 Roundtrip, found 16 hours ago
￥79,440
Roundtrip
found 16 hours ago
Select Icelandair flight, departing Fri, Jan 30 from Washington to London, returning Mon, Feb 2, priced at ￥79,440 found 16 hours ago
Icelandair
Fri, Jan 30 - Mon, Feb 2
IAD
Washington
LHR
London
￥79,690 Roundtrip, found 16 hours ago
￥79,690
Roundtrip
found 16 hours ago
Select Icelandair flight, departing Fri, Jan 30 from Washington to London, returning Mon, Feb 2, priced at ￥79,690 found 16 hours ago
Icelandair
Mon, Dec 1 - Wed, Dec 10
IAD
Washington
LHR
London
￥80,235 Roundtrip, found 18 hours ago
￥80,235
Roundtrip
found 18 hours ago
Select Icelandair flight, departing Mon, Dec 1 from Washington to London, returning Wed, Dec 10, priced at ￥80,235 found 18 hours ago
Delta
Mon, Dec 1 - Wed, Dec 10
IAD
Washington
LHR
London
￥88,370 Roundtrip, found 18 hours ago
￥88,370
Roundtrip
found 18 hours ago
Select Delta flight, departing Mon, Dec 1 from Washington to London, returning Wed, Dec 10, priced at ￥88,370 found 18 hours ago
Scandinavian Airlines
Mon, Feb 9 - Wed, Feb 18
IAD
Washington
LHR
London
￥89,240 Roundtrip, found 1 hour ago
￥89,240
Roundtrip
found 1 hour ago
Select Scandinavian Airlines flight, departing Mon, Feb 9 from Washington to London, returning Wed, Feb 18, priced at ￥89,240 found 1 hour ago
Virgin Atlantic
Mon, Nov 10 - Tue, Nov 18
IAD
Washington
LHR
London
￥89,250 Roundtrip, found 1 hour ago
￥89,250
Roundtrip
found 1 hour ago
Select Virgin Atlantic flight, departing Mon, Nov 10 from Washington to London, returning Tue, Nov 18, priced at ￥89,250 found 1 hour ago
Virgin Atlantic
Wed, Dec 31 - Tue, Jan 13
IAD
Washington
LHR
London
￥89,710 Roundtrip, found 5 days ago
￥89,710
Roundtrip
found 5 days ago
Select Virgin Atlantic flight, departing Wed, Dec 31 from Washington to London, returning Tue, Jan 13, priced at ￥89,710 found 5 days ago
American Airlines
Mon, Nov 10 - Tue, Nov 18
IAD
Washington
LHR
London
￥90,110 Roundtrip, found 1 hour ago
￥90,110
Roundtrip
found 1 hour ago
Select American Airlines flight, departing Mon, Nov 10 from Washington to London, returning Tue, Nov 18, priced at ￥90,110 found 1 hour ago
British Airways
Mon, Dec 1 - Wed, Dec 10
IAD
Washington
LHR
London
￥92,010 Roundtrip, found 18 hours ago
￥92,010
Roundtrip
found 18 hours ago
Select British Airways flight, departing Mon, Dec 1 from Washington to London, returning Wed, Dec 10, priced at ￥92,010 found 18 hours ago
United
Mon, Feb 9 - Wed, Feb 18
IAD
Washington
LHR
London
￥93,720 Roundtrip, found 1 hour ago
￥93,720
Roundtrip
found 1 hour ago
Select United flight, departing Mon, Feb 9 from Washington to London, returning Wed, Feb 18, priced at ￥93,720 found 1 hour ago

Find the cheapest month to fly from Washington (IAD) to London (LHR)

January is typically the cheapest month to fly

From ￥68,404 - ￥129,482 per traveler.

Frequently asked questions

How much is a flight from Dulles Intl. Airport to LHR?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from IAD to London Heathrow was ￥79,440. Great fares don't last long, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Dulles Intl. Airport to LHR?
We get that your situation can change unexpectedly, so we've made it as hassle-free as possible for you to cancel your trip online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Washington Dulles Intl. Airport (IAD) to Heathrow Airport (LHR) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for IAD to London Heathrow flights, you'll see a "no change fees" filter for you to select.
How many hours is the flight from IAD to Heathrow Airport (LHR)?
The average flight between Dulles Intl. Airport and Heathrow Airport (LHR) is 7 hours and 23 minutes. If you're traveling with kids, it's always a good idea to pack some snacks or fruit in your hand luggage.
How far is the flight from IAD to Heathrow Airport?
Chantilly to Hounslow is around 5,900 kilometers, so get ready to spend a while in the air. Don't forget to pack all the essentials, from your hoodie to your headphones. Toss in some snacks to munch on throughout your journey too.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to London Heathrow?
With 91 monthly flights operating from IAD to Heathrow Airport (LHR), United Airlines (UA) is a terrific choice. You could also check out the fares available with British Airways (BA). This carrier operates 60 monthly flights between Chantilly and Hounslow.
Are Washington Dulles Intl. Airport (IAD) to Heathrow Airport flight tickets cheaper when they're purchased at the last minute?
Flight tickets from Dulles Intl. Airport to London Heathrow are available up to a year prior to departure on Expedia. And although you may occasionally score fantastic last-minute deals, it's never a sure thing. Also, booking your flights ahead of time means you'll have more options — and you can avoid ending up with the dreaded middle seat! We're always updating our fares to bring you the best bargains, so check back often for all the latest specials.

Travel information

Origin airport
Washington Dulles Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
￥79,440
Distance
5866 km
Average flight time
12 hours 22 mins

Book with confidence

Washington to London Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Washington to will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring London.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with IAD to LHR flights that won’t make your bank account wince. Ready to temporarily leave behind Washington for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to LHR with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Washington to London Flights

Explore a world of travel with Expedia

London nearby Airports

London

*Available to Expedia members.