RM1,619 Cheap Flights from Washington (IAD) to London (LHR)

View RM1,619 flight on Sun, 19 Oct 2025Opens in a new window

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

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Cheap Flights from Washington to London (IAD-LHR)

Prices were available within the past 7 days and start at RM1,619 for one-way flights and RM2,563 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Wed, 15 Oct - Tue, 21 Oct
IAD
Washington
LHR
London
RM2,563 Return, found 2 days ago
RM2,563
Return
found 2 days ago
Select United flight, departing Wed, 15 Oct from Washington to London, returning Tue, 21 Oct, priced at RM2,563 found 2 days ago
United
Wed, 15 Oct - Wed, 22 Oct
IAD
Washington
LHR
London
RM2,565 Return, found 2 days ago
RM2,565
Return
found 2 days ago
Select United flight, departing Wed, 15 Oct from Washington to London, returning Wed, 22 Oct, priced at RM2,565 found 2 days ago
United
Mon, 17 Nov - Mon, 24 Nov
IAD
Washington
LHR
London
RM2,599 Return, found 11 hours ago
RM2,599
Return
found 11 hours ago
Select United flight, departing Mon, 17 Nov from Washington to London, returning Mon, 24 Nov, priced at RM2,599 found 11 hours ago
United
Mon, 17 Nov - Mon, 24 Nov
IAD
Washington
LHR
London
RM2,623 Return, found 11 hours ago
RM2,623
Return
found 11 hours ago
Select United flight, departing Mon, 17 Nov from Washington to London, returning Mon, 24 Nov, priced at RM2,623 found 11 hours ago
Delta
Mon, 17 Nov - Mon, 24 Nov
IAD
Washington
LHR
London
RM2,647 Return, found 11 hours ago
RM2,647
Return
found 11 hours ago
Select Delta flight, departing Mon, 17 Nov from Washington to London, returning Mon, 24 Nov, priced at RM2,647 found 11 hours ago
Virgin Atlantic
Mon, 17 Nov - Mon, 24 Nov
IAD
Washington
LHR
London
RM2,678 Return, found 11 hours ago
RM2,678
Return
found 11 hours ago
Select Virgin Atlantic flight, departing Mon, 17 Nov from Washington to London, returning Mon, 24 Nov, priced at RM2,678 found 11 hours ago
Virgin Atlantic
Sun, 19 Oct - Tue, 28 Oct
IAD
Washington
LHR
London
RM2,685 Return, found 9 hours ago
RM2,685
Return
found 9 hours ago
Select Virgin Atlantic flight, departing Sun, 19 Oct from Washington to London, returning Tue, 28 Oct, priced at RM2,685 found 9 hours ago
United
Sun, 19 Oct - Tue, 28 Oct
IAD
Washington
LHR
London
RM2,688 Return, found 9 hours ago
RM2,688
Return
found 9 hours ago
Select United flight, departing Sun, 19 Oct from Washington to London, returning Tue, 28 Oct, priced at RM2,688 found 9 hours ago
KLM
Mon, 17 Nov - Mon, 24 Nov
IAD
Washington
LHR
London
RM2,788 Return, found 11 hours ago
RM2,788
Return
found 11 hours ago
Select KLM flight, departing Mon, 17 Nov from Washington to London, returning Mon, 24 Nov, priced at RM2,788 found 11 hours ago
British Airways
Sun, 19 Oct - Tue, 28 Oct
IAD
Washington
LHR
London
RM2,803 Return, found 9 hours ago
RM2,803
Return
found 9 hours ago
Select British Airways flight, departing Sun, 19 Oct from Washington to London, returning Tue, 28 Oct, priced at RM2,803 found 9 hours ago

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

October is typically the cheapest month to fly

From RM 1,884 - RM 3,823 per traveller.

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Heathrow LHR. Cheapest option available. Average driving time to city centre is 28 minutes. Flights from RM 2,687
LHR
Heathrow
Cheapest
Average driving time to city centre28 min
Flights from RM 2,687
Washington to London route information
Origin airport
Washington Dulles Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Delta, Finnair, Iberia, KLM, Lufthansa, Swiss International Air Lines, Turkish Airlines, United
Return price
RM2,563
Distance
5866 km
Average flight time
12 hours 20 mins

Perfect flights from Washington to London

Your Journey from Washington to London

Start your unforgettable journey with Expedia. Our broad selection of flights from Washington to London caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including United, British Airways, KLM, Air France, Austrian Airlines, Air Canada, Delta, Virgin Atlantic. Our selection of flights from Washington Dulles Intl. to Heathrow caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Washington to London Flights

Experience the joy of finding cheap flights from Washington Dulles Intl. to Heathrow that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from RM1,619 and roundtrip prices from RM2,563*.
 

Pre-Flight Essentials

Ensure a smooth journey from Washington to London with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant London

Picture yourself stepping off the plane in London and immersing yourself in the unique atmosphere of . From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Washington to London Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Washington to London.
 

Beyond the Flight – Exploring London

With Expedia, your adventure extends beyond the flight. Explore London at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Washington to London with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Washington to London with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from Washington Dulles Intl. Airport (IAD) to Heathrow Airport (LHR)?
Start packing your suitcase, because round-trip journeys from IAD to London Heathrow start from RM2,563. That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book today to nab the best deal. 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 Heathrow Airport?
We understand that things come up unexpectedly, so we've made it as easy as possible for you to cancel your trip online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Dulles Intl. Airport 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 Heathrow Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Dulles Intl. Airport to LHR?
You'll have 5,900 kilometres to cover on the long-haul Chantilly to Hounslow route. Dress in layers of comfortable clothes and consider taking a sleep mask and earplugs.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Heathrow Airport?
With 60 flights a month from Dulles Intl. Airport to LHR, United Airlines (UA) is an excellent choice. Another carrier operating on this route is British Airways (BA). You'll have 60 flights every month to choose from.
Are IAD to LHR flight tickets cheaper when they're purchased at the last minute?
Booking your trip from IAD to London Heathrow at the last minute could be your ticket to a great deal. However, it could end up costing a great deal more! If you'd prefer to err on the side of caution, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred carrier hasn't released tickets yet, check back regularly as deals are updated on Expedia all the time.

Explore a world of travel with Expedia

*Available to Expedia members.