₩880,700 Cheap Flights from London (LHR) to Washington (IAD)

View ₩880,700 flight on Fri, Dec 5, 2025Opens in a new window

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

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Cheap Flights from London to Washington (LHR-IAD)

Prices were available within the past 7 days and start at ₩880,700 for one-way flights and ₩784,700 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Brussels Airlines
Thu, Oct 9 - Sun, Nov 30
LHR
London
IAD
Washington
₩784,700 Roundtrip, found 4 days ago
₩784,700
Roundtrip
found 4 days ago
Select Brussels Airlines flight, departing Thu, Oct 9 from London to Washington, returning Sun, Nov 30, priced at ₩784,700 found 4 days ago
Air Canada
Thu, Oct 9 - Sun, Nov 30
LHR
London
IAD
Washington
₩791,600 Roundtrip, found 4 days ago
₩791,600
Roundtrip
found 4 days ago
Select Air Canada flight, departing Thu, Oct 9 from London to Washington, returning Sun, Nov 30, priced at ₩791,600 found 4 days ago
Delta
Thu, Oct 9 - Sun, Nov 30
LHR
London
IAD
Washington
₩798,900 Roundtrip, found 4 days ago
₩798,900
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Oct 9 from London to Washington, returning Sun, Nov 30, priced at ₩798,900 found 4 days ago
Delta
Thu, Oct 9 - Sun, Nov 30
LHR
London
IAD
Washington
₩806,900 Roundtrip, found 4 days ago
₩806,900
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Oct 9 from London to Washington, returning Sun, Nov 30, priced at ₩806,900 found 4 days ago
Brussels Airlines
Thu, Oct 9 - Sun, Nov 30
LHR
London
IAD
Washington
₩812,100 Roundtrip, found 4 days ago
₩812,100
Roundtrip
found 4 days ago
Select Brussels Airlines flight, departing Thu, Oct 9 from London to Washington, returning Sun, Nov 30, priced at ₩812,100 found 4 days ago
American Airlines
Thu, Oct 9 - Sun, Nov 30
LHR
London
IAD
Washington
₩823,500 Roundtrip, found 4 days ago
₩823,500
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Oct 9 from London to Washington, returning Sun, Nov 30, priced at ₩823,500 found 4 days ago
United
Thu, Oct 9 - Sun, Nov 30
LHR
London
IAD
Washington
₩823,700 Roundtrip, found 4 days ago
₩823,700
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 9 from London to Washington, returning Sun, Nov 30, priced at ₩823,700 found 4 days ago
Delta
Thu, Oct 9 - Sun, Nov 30
LHR
London
IAD
Washington
₩827,800 Roundtrip, found 4 days ago
₩827,800
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Oct 9 from London to Washington, returning Sun, Nov 30, priced at ₩827,800 found 4 days ago
Delta
Thu, Oct 9 - Sun, Nov 30
LHR
London
IAD
Washington
₩831,400 Roundtrip, found 4 days ago
₩831,400
Roundtrip
found 4 days ago
Select Delta flight, departing Thu, Oct 9 from London to Washington, returning Sun, Nov 30, priced at ₩831,400 found 4 days ago
United
Thu, Oct 9 - Sun, Nov 30
LHR
London
IAD
Washington
₩831,600 Roundtrip, found 4 days ago
₩831,600
Roundtrip
found 4 days ago
Select United flight, departing Thu, Oct 9 from London to Washington, returning Sun, Nov 30, priced at ₩831,600 found 4 days ago

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

November is typically the cheapest month to fly

From ₩645,448 - ₩1,088,799 per traveler.

Frequently asked questions

How much is a flight from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip journey between London Heathrow and Dulles Intl. Airport was ₩784,700. Fares this cheap don't wait forever, so make sure you book yours ASAP. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from LHR to Dulles Intl. Airport?
This can differ from airline to airline, as each has its own terms and conditions. Visit the Customer Service Portal, where you'll find easy instructions on how to cancel your flight online.
How do I find cheap flights from London Heathrow to IAD 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 Heathrow Airport to Dulles Intl. Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Heathrow Airport (LHR) to Dulles Intl. Airport?
With around 5,900 kilometers separating Heathrow Airport and IAD, your flight will be a long one. Pack wisely to make your time on board comfortable. Simple things like warm clothes and some noise-canceling headphones can make the biggest difference.
Which airlines fly direct from LHR to Dulles Intl. Airport?
United Airlines (UA) is a popular choice. It offers 60 flights between LHR and Washington Dulles Intl. Airport (IAD) each month. You could also have a look at the airfares with British Airways (BA). This airline operates 60 flights every month between Hounslow and Chantilly.
Are London Heathrow to IAD flight tickets cheaper when they're purchased at the last minute?
Flight prices fluctuate, so not always. While last-minute deals between LHR and Washington Dulles Intl. Airport (IAD) are of course possible, it's also a good idea to keep a close eye on prices well before you fly. In fact, some air carriers publish their prices up to a year ahead of the departure date. Expedia is constantly updating the best bargains around, so check back often and be ready to grab your seat when fare prices drop.

Travel information

Travel information

Origin airport
Heathrow
Destination airport
Washington Dulles Intl.
Roundtrip price
₩784,700
Distance
5866 km
Average flight time
3 hours 14 mins

Book with confidence

Book with confidence

London to Chantilly 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 London to Chantilly 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 Chantilly.

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 LHR to IAD flights that won’t make your bank account wince. Ready to temporarily leave behind London 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 IAD 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.

London to Chantilly Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

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Baltimore

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₩831,400
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London

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