฿16,465 Cheap Flights from London (LHR) to Washington (IAD)

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

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Cheap Flights from London (LHR) to Washington (IAD)

Prices were available within the past 7 days and start at ฿16,465 for one-way flights and ฿16,575 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Swiss International Air Lines
Thu, 12 Mar - Wed, 18 Mar
LHR
London
IAD
Washington
฿16,575 Return, found 5 days ago
฿16,575
Return
found 5 days ago
Select Swiss International Air Lines flight, departing Thu, 12 Mar from London to Washington, returning Wed, 18 Mar, priced at ฿16,575 found 5 days ago
Austrian Airlines
Thu, 12 Mar - Wed, 18 Mar
LHR
London
IAD
Washington
฿16,635 Return, found 5 days ago
฿16,635
Return
found 5 days ago
Select Austrian Airlines flight, departing Thu, 12 Mar from London to Washington, returning Wed, 18 Mar, priced at ฿16,635 found 5 days ago
Lufthansa
Thu, 12 Mar - Wed, 18 Mar
LHR
London
IAD
Washington
฿16,765 Return, found 5 days ago
฿16,765
Return
found 5 days ago
Select Lufthansa flight, departing Thu, 12 Mar from London to Washington, returning Wed, 18 Mar, priced at ฿16,765 found 5 days ago
United
Thu, 12 Mar - Wed, 18 Mar
LHR
London
IAD
Washington
฿17,090 Return, found 5 days ago
฿17,090
Return
found 5 days ago
Select United flight, departing Thu, 12 Mar from London to Washington, returning Wed, 18 Mar, priced at ฿17,090 found 5 days ago
Swiss International Air Lines
Thu, 12 Mar - Wed, 18 Mar
LHR
London
IAD
Washington
฿17,460 Return, found 5 days ago
฿17,460
Return
found 5 days ago
Select Swiss International Air Lines flight, departing Thu, 12 Mar from London to Washington, returning Wed, 18 Mar, priced at ฿17,460 found 5 days ago
Austrian Airlines
Thu, 12 Mar - Wed, 18 Mar
LHR
London
IAD
Washington
฿17,930 Return, found 5 days ago
฿17,930
Return
found 5 days ago
Select Austrian Airlines flight, departing Thu, 12 Mar from London to Washington, returning Wed, 18 Mar, priced at ฿17,930 found 5 days ago
Air Canada
Thu, 12 Mar - Wed, 18 Mar
LHR
London
IAD
Washington
฿18,150 Return, found 5 days ago
฿18,150
Return
found 5 days ago
Select Air Canada flight, departing Thu, 12 Mar from London to Washington, returning Wed, 18 Mar, priced at ฿18,150 found 5 days ago
Lufthansa
Thu, 12 Mar - Wed, 18 Mar
LHR
London
IAD
Washington
฿18,265 Return, found 5 days ago
฿18,265
Return
found 5 days ago
Select Lufthansa flight, departing Thu, 12 Mar from London to Washington, returning Wed, 18 Mar, priced at ฿18,265 found 5 days ago
British Airways
Thu, 23 Apr - Wed, 29 Apr
LHR
London
IAD
Washington
฿18,695 Return, found 4 days ago
฿18,695
Return
found 4 days ago
Select British Airways flight, departing Thu, 23 Apr from London to Washington, returning Wed, 29 Apr, priced at ฿18,695 found 4 days ago
American Airlines
Thu, 23 Apr - Wed, 29 Apr
LHR
London
IAD
Washington
฿18,860 Return, found 4 days ago
฿18,860
Return
found 4 days ago
Select American Airlines flight, departing Thu, 23 Apr from London to Washington, returning Wed, 29 Apr, priced at ฿18,860 found 4 days ago

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 ฿16,575. 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 kilometres 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-cancelling 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

Origin airport
Heathrow
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, Delta, ITA Airways, Icelandair, KLM, Lufthansa, Royal Air Maroc, Swiss International Air Lines, TAP Portugal, United
Return price
฿16,575
Distance
5866 km
Average flight time
4 hours 36 mins

Book with confidence

Perfect flights from London to Washington

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Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Heathrow to Washington Dulles Intl. ticket options cater to your travel preferences, with incredible one-way fares from ฿16,465 and roundtrip prices from ฿16,575. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
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Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Washington.
Perfect flights from London to Washington
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