NT$19,852 Cheap Flights from London (LHR) to Washington (IAD)

View NT$19,852 flight on Tue, 2026/5/12Opens 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 NT$19,852 for one-way flights and NT$24,643 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Virgin Atlantic
Sun, May 10 - Thu, May 14
LHR
London
IAD
Washington
NT$24,643 Roundtrip, found 1 day ago
NT$24,643
Roundtrip
found 1 day ago
Select Virgin Atlantic flight, departing Sun, May 10 from London to Washington, returning Thu, May 14, priced at NT$24,643 found 1 day ago
Delta
Sun, May 10 - Thu, May 14
LHR
London
IAD
Washington
NT$24,643 Roundtrip, found 1 day ago
NT$24,643
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, May 10 from London to Washington, returning Thu, May 14, priced at NT$24,643 found 1 day ago
KLM
Sun, May 10 - Thu, May 14
LHR
London
IAD
Washington
NT$24,979 Roundtrip, found 1 day ago
NT$24,979
Roundtrip
found 1 day ago
Select KLM flight, departing Sun, May 10 from London to Washington, returning Thu, May 14, priced at NT$24,979 found 1 day ago
Scandinavian Airlines
Sun, May 10 - Mon, Aug 31
LHR
London
IAD
Washington
NT$25,448 Roundtrip, found 1 day ago
NT$25,448
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Sun, May 10 from London to Washington, returning Mon, Aug 31, priced at NT$25,448 found 1 day ago
Delta
Sun, May 10 - Thu, May 14
LHR
London
IAD
Washington
NT$25,531 Roundtrip, found 1 day ago
NT$25,531
Roundtrip
found 1 day ago
Select Delta flight, departing Sun, May 10 from London to Washington, returning Thu, May 14, priced at NT$25,531 found 1 day ago
Scandinavian Airlines
Sun, May 10 - Mon, Aug 31
LHR
London
IAD
Washington
NT$25,570 Roundtrip, found 1 day ago
NT$25,570
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Sun, May 10 from London to Washington, returning Mon, Aug 31, priced at NT$25,570 found 1 day ago
Scandinavian Airlines
Thu, May 21 - Sun, May 31
LHR
London
IAD
Washington
NT$25,648 Roundtrip, found 5 days ago
NT$25,648
Roundtrip
found 5 days ago
Select Scandinavian Airlines flight, departing Thu, May 21 from London to Washington, returning Sun, May 31, priced at NT$25,648 found 5 days ago
Scandinavian Airlines
Sun, May 10 - Mon, Aug 31
LHR
London
IAD
Washington
NT$25,675 Roundtrip, found 1 day ago
NT$25,675
Roundtrip
found 1 day ago
Select Scandinavian Airlines flight, departing Sun, May 10 from London to Washington, returning Mon, Aug 31, priced at NT$25,675 found 1 day ago
KLM
Sun, May 10 - Thu, May 14
LHR
London
IAD
Washington
NT$25,867 Roundtrip, found 1 day ago
NT$25,867
Roundtrip
found 1 day ago
Select KLM flight, departing Sun, May 10 from London to Washington, returning Thu, May 14, priced at NT$25,867 found 1 day ago
Air France
Sun, May 10 - Thu, May 14
LHR
London
IAD
Washington
NT$26,419 Roundtrip, found 1 day ago
NT$26,419
Roundtrip
found 1 day ago
Select Air France flight, departing Sun, May 10 from London to Washington, returning Thu, May 14, priced at NT$26,419 found 1 day 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 NT$24,643. 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

Origin airport
Heathrow
Destination airport
Washington Dulles Intl.
Airlines serving
Air Canada, Air France, American Airlines, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, Turkish Airlines, United
Roundtrip price
NT$24,643
Distance
5866 km
Average flight time
3 hours 11 mins

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