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Washington, D.C.

$455+ Cheap flights from Heathrow (LHR) to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/12. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — WAS
Nov 13 — Nov 201
Thu 11/13
Thu 11/20
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Washington, D.C. are usually found in September or February, booked 44 days in advance, depart on a Thursday or Saturday and return on a Wednesday

Cheap flight deals from Heathrow to Washington, D.C.

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 14, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$527
(Gotogate)

One-way from

$455
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$758

Good round-trip deal

$569 or less

Good one-way deal

$613 or less
Provider with most accurate pricing for London Heathrow-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for London Heathrow-Washington, D.C. (WAS) flights.
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From London Heathrow to Washington, D.C. (WAS)
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One-way flight from London Heathrow to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 10% potential increase in price ($88 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from London Heathrow to Washington, D.C. (WAS).
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Price to beat on a one-way flight from London Heathrow to Washington, D.C. (WAS).
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Find flight deals from Heathrow to Washington, D.C.

Cheapest flights from Heathrow to Washington, D.C.
Explore the most affordable flight options available from Heathrow to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 14, 2025.

This Gotogate deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:55 pmLHR - IAD
1 stop24h 20mTAP AIR PORTUGAL
Tue 12/25:30 pmIAD - LHR
1 stop24h 10mTAP AIR PORTUGAL
Deal found 10/12$527
This Flightnetwork deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/234:30 pmLHR - IAD
1 stop27h 45mTAP AIR PORTUGAL
Wed 12/310:30 pmIAD - LHR
1 stop18h 05mTAP AIR PORTUGAL
Deal found 10/12$528
This oojo deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:00 amLHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Wed 12/310:30 pmIAD - LHR
1 stop15h 25mTAP AIR PORTUGAL
Deal found 10/12$529
This oojo deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:00 amLHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Sun 11/3010:30 pmIAD - LHR
1 stop14h 00mTAP AIR PORTUGAL
Deal found 10/14$530
This Cheapflightsfares deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:00 amLHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Wed 12/1010:30 pmIAD - LHR
1 stop14h 00mTAP AIR PORTUGAL
Deal found 10/13$531
This Gotogate deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:30 pmLHR - IAD
1 stop31h 30mTAP AIR PORTUGAL
Thu 12/115:30 pmIAD - LHR
1 stop24h 10mTAP AIR PORTUGAL
Deal found 10/12$534
This oojo deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:00 amLHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Mon 12/15:30 pmIAD - LHR
1 stop14h 10mTAP AIR PORTUGAL
Deal found 10/14$538
This oojo deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/256:00 amLHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Tue 12/25:30 pmIAD - LHR
1 stop14h 10mTAP AIR PORTUGAL
Deal found 10/12$539
This Justfly.com deal was found by Cheapflights users on 10/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/237:55 pmLHR - IAD
1 stop24h 20mTAP AIR PORTUGAL
Sat 11/295:30 pmIAD - LHR
1 stop12h 55mTAP AIR PORTUGAL
Deal found 10/12$550
This TravelUp deal was found by Cheapflights users on 10/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/117:25 amLHR - DCA
1 stop20h 34mJetBlue
Tue 11/183:09 pmDCA - LHR
1 stop10h 46mJetBlue
Deal found 10/14$554
This TravelUp deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/257:25 amLHR - DCA
1 stop20h 34mJetBlue
Tue 12/26:00 amDCA - LHR
1 stop10h 40mJetBlue
Deal found 10/13$555
This FlightHub deal was found by Cheapflights users on 10/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:30 pmLHR - IAD
1 stop31h 30mTAP AIR PORTUGAL
Tue 12/95:30 pmIAD - LHR
1 stop14h 10mTAP AIR PORTUGAL
Deal found 10/13$556

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 14, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Washington, D.C. that are best for you.

Fly from

Heathrow

Fly to

Washington, D.C.

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 11/25

12:20 pm-10:59 pm

1 stop15h 39m

Washington, D.C. Reagan-National

Wed 12/10

1:45 pm-6:55 am

1 stop12h 10m

$592

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 10/28

9:20 am-6:04 pm

1 stop12h 44m

Washington, D.C. Reagan-National

Wed 11/5

6:24 am-9:40 pm

1 stop10h 16m

$624

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 11/23

7:45 am-10:59 pm

1 stop20h 14m

Washington, D.C. Reagan-National

Mon 12/1

5:44 pm-9:30 am

1 stop10h 46m

$635

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 12/15

12:20 pm-10:58 pm

1 stop15h 38m

Washington, D.C. Reagan-National

Mon 1/19

6:15 am-8:45 pm

1 stop9h 30m

$643

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 11/4

9:20 am-6:04 pm

1 stop13h 44m

Washington, D.C. Reagan-National

Fri 11/14

6:24 am-8:45 pm

1 stop9h 21m

$643

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 11/8

8:05 am-2:36 pm

1 stop11h 31m

Washington, D.C. Reagan-National

Thu 11/13

9:50 am-6:55 am

1 stop16h 05m

$643

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 11/6

7:25 am-2:36 pm

1 stop12h 11m

Washington, D.C. Reagan-National

Wed 11/12

6:24 am-9:40 pm

1 stop10h 16m

$643

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 12/15

12:20 pm-10:58 pm

1 stop15h 38m

Washington, D.C. Reagan-National

Thu 1/22

3:30 pm-6:55 am

1 stop10h 25m

$643

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 11/20

7:25 am-2:59 pm

1 stop12h 34m

Washington, D.C. Reagan-National

Wed 11/26

6:15 am-9:40 pm

1 stop10h 25m

$646

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 12/11

9:20 am-4:00 pm

1 stop11h 40m

Washington, D.C. Reagan-National

Tue 12/16

6:00 am-9:40 pm

1 stop10h 40m

$648

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/12

Showing 1-10 of 60 results
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Compare providers for flights from Heathrow to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Heathrow to Washington, D.C. in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
GurufarePrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
FlightnetworkPrice Accuracy3 starsTrust Score*1 star
Thrive TravelPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London Heathrow Airport-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London Heathrow Airport-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London Heathrow Airport-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London Heathrow Airport-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London Heathrow Airport-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Heathrow to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Heathrow with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Washington, D.C.

How far ahead should I book a flight from London Heathrow Airport to Washington, D.C.?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Washington, D.C.. Price data was last updated on October 10, 2025.

Booking 44 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London Heathrow Airport to Washington, D.C.?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $465). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of $684). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LHR to WAS?

Find hourly flight availability from Heathrow to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 14, 2025.

When flying from London Heathrow Airport to Washington, D.C., the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 37% versus a flight at noon.

What is the cheapest day to fly from London Heathrow Airport to Washington, D.C.?

Use this chart to determine the cheapest time to fly round-trip from Heathrow to Washington, D.C.. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their London Heathrow Airport to Washington, D.C. flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London Heathrow Airport to Washington, D.C.

Explore weekly flight availability from Heathrow to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated October 14, 2025.

The most flights from LHR to WAS are scheduled on a Monday (26 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (26 on average).

What’s the top layover airport for flights from London Heathrow Airport to Washington, D.C.?

Share of 1-stop round-trip flights from London Heathrow Airport to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same layover each way.

Reykjavik (KEF) – chosen by Cheapflights users on 45% of 1-stop itineraries from London Heathrow Airport to Washington, D.C. on Cheapflights.

What’s the cheapest layover airport for flights from London Heathrow Airport to Washington, D.C.?

Average round-trip fare for 1-stop flights from London Heathrow Airport to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same layover each way.

Dublin (DUB) is the most affordable 1-stop option, with an average round-trip price of $519.

What’s the fastest layover option from London Heathrow Airport to Washington, D.C.?

Shortest average travel time for 1-stop one-way flights from London Heathrow Airport to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by layover airport.

Flights via Dublin (DUB) have the shortest average one-way travel time for 1-stop routes: 11h 00m.

Which airport typically offers the quickest layover for flights from London Heathrow Airport to Washington, D.C.?

Average layover duration for 1-stop one-way flights from London Heathrow Airport to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Flights via Reykjavik (KEF) offer the fastest connection on this route, with an average layover time of 1h 21m.

The best insider tips for London Heathrow Airport to Washington, D.C. flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your London Heathrow Airport to Washington, D.C. trip
Airlines
British Airways

BA's Club Suite offers private pods with a door, enhancing comfort on long-haul flights.


BA's World Traveller Plus offers extra seat width and legroom, ideal for long-haul comfort.

Read more about British Airwaysby Gabriel Leigh
United Airlines

United's Polaris Business Class features lie-flat seats, Saks Fifth Avenue bedding, and upscale amenities.


United's Premium Plus offers extra legroom, upgraded meals, and two checked bags on international flights.

Read more about United Airlinesby Harriet Baskas
Airports
LHR

For a smooth departure from Heathrow, arrive early to enjoy lounges like the Cathay Pacific lounge in Terminal 3, known for its dan dan noodles.

Read more about LHRby Ramsey Qubein
IAD

Upon arriving at IAD, take the Silver Line Metro for a cost-effective and quick 40-minute ride to Washington, D.C.

Read more about IADby Ramsey Qubein
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on LHR and IAD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated October 14, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from London Heathrow Airport to Washington, D.C.. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,972 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
8.0
Very good
7,972 reviews
Delta
8.0
Very good
7,972 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
8,975 reviews
Delta
8.0
Very good
7,972 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
American Airlines
7.2
Good
11,039 reviews
Delta
8.0
Very good
7,972 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Icelandair
7.0
Good
556 reviews
Delta
8.0
Very good
7,972 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
British Airways
6.7
Okay
7,454 reviews
Delta
8.0
Very good
7,972 reviews

Comfort

7.9

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London Heathrow Airport to Washington, D.C.?

    JetBlue, Scandinavian Airlines, and Icelandair can get you from London Heathrow Airport to Washington, D.C. in just under 11h 25m. Your travel time can differ by up to 15h. The distance between London Heathrow Airport and Washington, D.C. is about 3622 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from London Heathrow Airport to Washington, D.C. round-trip?

    Currently priced at $320, Delta will fly you from London Heathrow Airport to Washington, D.C. and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Scandinavian Airlines and Austrian Airlines - these airlines can fly you to your destination from $390 and $431, respectively. Delta is 58% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from London Heathrow Airport to Washington, D.C. one-way?

    For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as $486. Users have also found prices from $500 and $509 on JetBlue and Icelandair, respectively.

  • What are the most popular routes from London Heathrow Airport to Washington, D.C.?

    When deciding which route to take from London Heathrow Airport to Washington, D.C. consider London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Heathrow - Washington, D.C. Reagan-National as they are the most popular.

  • What are the most reliable airlines from London Heathrow Airport to Washington, D.C.?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London Heathrow Airport to Washington, D.C. on time: KLM (87%), Air France (87%), Delta (87%).

  • What are the cheapest flights from London Heathrow Airport to Washington, D.C.?

    Looking at all options, your cheapest flight can be booked for $559. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $522 on average, our data indicates $1,470 when flying from London Heathrow Airport to Washington, D.C..

  • Can I find deals for flights from Heathrow to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Heathrow to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Washington, D.C..

  • Can I find deals for business class flights from Heathrow to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Heathrow to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Washington, D.C.?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $465). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of $684). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Woodbridge
Arlington
Tysons
Springfield
Silver Spring
Hanover
Gaithersburg
Fredericksburg
Fairfax
Linthicum Heights
Falls Church
Owings Mills
Manassas
Largo
Oxon Hill
Laurel
Towson
National Harbor
Waldorf

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Top 10 airlines flying from Heathrow to Washington, D.C.

Discover the top 10 airlines that operate flights from Heathrow to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$320Average$962FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$390Average$833FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$431Average$858FlexibilityNo cancel feeOn-time78%
TAP AIR PORTUGALCheapest$473Average$714FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$490Average$679FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$562Average$733FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$567Average$823FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$594Average$846FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$635Average$663FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$649Average$873FlexibilityNo cancel feeOn-time76%

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