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Washington, D.C.

$398+ 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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — WAS
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
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 November, booked 73 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

Cheap 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 December 12, 2025.

This JetBlue deal was found by Cheapflights users on 12/10. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/309:20 amLHR - DCA
1 stop11h 29mJetBlue
Sun 1/1811:55 amDCA - LHR
1 stop14h 00mJetBlue
Deal found 12/10$651
This Booking.com deal was found by Cheapflights users on 12/11. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/166:00 amLHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Mon 1/195:30 pmIAD - LHR
1 stop23h 05mTAP AIR PORTUGAL
Deal found 12/11$673
This Gotogate deal was found by Cheapflights users on 12/10. 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 12/144:30 pmLHR - IAD
1 stop27h 45mTAP AIR PORTUGAL
Sun 1/1110:30 pmIAD - LHR
1 stop18h 05mTAP AIR PORTUGAL
Deal found 12/10$726
This Booking.com deal was found by Cheapflights users on 12/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/255:50 pmLHR - IAD
1 stop27h 15mVirgin Atlantic
Wed 12/3110:20 pmIAD - LHR
Nonstop7h 30mVirgin Atlantic
Deal found 12/10$733
This TravelUp deal was found by Cheapflights users on 12/9. 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.
Wed 12/241:00 pmLHR - BWI
1 stop15h 31mVirgin Atlantic
Tue 1/131:02 pmBWI - LHR
1 stop17h 38mVirgin Atlantic
Deal found 12/9$740
This Cheapflightsfares deal was found by Cheapflights users on 12/11. 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.
Fri 12/198:15 amLHR - IAD
1 stop17h 45mTAP AIR PORTUGAL
Mon 1/265:30 pmIAD - LHR
1 stop14h 10mTAP AIR PORTUGAL
Deal found 12/11$749
This Delta deal was found by Cheapflights users on 12/9. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:00 amLHR - BWI
2 stops18h 31mDelta
Tue 1/1312:00 pmBWI - LHR
2 stops13h 25mDelta
Deal found 12/9$761
This Booking.com deal was found by Cheapflights users on 12/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:30 amLHR - IAD
1 stop13h 00mVirgin Atlantic
Wed 12/3110:20 pmIAD - LHR
Nonstop7h 30mVirgin Atlantic
Deal found 12/10$764
This TravelUp deal was found by Cheapflights users on 12/10. 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.
Fri 12/2612:30 pmLHR - BWI
1 stop15h 14mVirgin Atlantic
Tue 12/306:59 pmBWI - LHR
1 stop33h 01mVirgin Atlantic
Deal found 12/10$765
This Virgin Atlantic deal was found by Cheapflights users on 12/9. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2411:30 amLHR - BWI
2 stops17h 01mVirgin Atlantic
Wed 12/3111:30 amBWI - LHR
1 stop13h 55mVirgin Atlantic
Deal found 12/9$766
This Virgin Atlantic deal was found by Cheapflights users on 12/9. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1611:30 amLHR - BWI
2 stops16h 33mVirgin Atlantic
Wed 1/712:00 pmBWI - LHR
1 stop15h 45mVirgin Atlantic
Deal found 12/9$768
This JetBlue deal was found by Cheapflights users on 12/10. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2412:20 pmLHR - DCA
1 stop15h 26mJetBlue
Mon 12/292:00 pmDCA - LHR
1 stop11h 55mJetBlue
Deal found 12/10$769

Find 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 December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

Gurufare
3 stars

Round-trip from

$625
(Gotogate)

One-way from

$398
(Kiwi.com)

Popular in

July

Cheapest in

September

Average price

$762

Good round-trip deal

$676 or less

Good one-way deal

$645 or less
Provider with most accurate pricing for London Heathrow-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for London Heathrow-Washington, D.C. (WAS) flights.
Search Deals
From London Heathrow to Washington, D.C. (WAS)
Search Deals
One-way flight from London Heathrow to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($109 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from London Heathrow to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from London Heathrow to Washington, D.C. (WAS).
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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 December 12, 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 - IAD

LHRIAD

London Heathrow

Thu 1/15

12:15 pm-6:30 pm

1 stop11h 15m

Washington, D.C. Dulles Intl

Sun 2/1

7:40 pm-10:50 am

1 stop10h 10m

$633

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 5/4

8:25 am-7:59 pm

1 stop16h 34m

Washington, D.C. Reagan-National

Sun 5/10

6:30 am-8:45 pm

1 stop9h 15m

$646

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 5/2

8:25 am-4:19 pm

1 stop12h 54m

Washington, D.C. Reagan-National

Wed 5/6

6:30 am-8:45 pm

1 stop9h 15m

$646

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 5/2

8:25 am-4:19 pm

1 stop12h 54m

Washington, D.C. Reagan-National

Mon 5/11

6:30 am-8:45 pm

1 stop9h 15m

$646

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 5/2

8:25 am-4:19 pm

1 stop12h 54m

Washington, D.C. Reagan-National

Thu 5/7

6:30 am-8:45 pm

1 stop9h 15m

$646

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 5/1

11:55 am-10:59 pm

1 stop16h 04m

Washington, D.C. Reagan-National

Wed 5/6

6:30 am-8:45 pm

1 stop9h 15m

$646

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 5/12

8:25 am-7:59 pm

1 stop16h 34m

Washington, D.C. Reagan-National

Tue 5/19

6:30 am-8:45 pm

1 stop9h 15m

$648

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 3/19

7:05 am-6:15 pm

2 stops15h 10m

Washington, D.C. Dulles Intl

Wed 4/1

8:20 pm-4:25 pm

2 stops15h 05m

$650

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 3/19

7:05 am-6:15 pm

2 stops15h 10m

Washington, D.C. Dulles Intl

Mon 3/30

8:20 pm-4:25 pm

2 stops15h 05m

$650

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 4/20

11:55 am-10:57 pm

1 stop16h 02m

Washington, D.C. Reagan-National

Sat 4/25

6:05 am-8:45 pm

1 stop9h 40m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
GurufarePrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
Thrive TravelPrice Accuracy3 starsTrust Score*1 star
PricelinePrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on London Heathrow Airport-Washington, D.C. flight deals on Cheapflights vs. eDreams >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 Gurufare the most. Gurufare 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 December 5, 2025.

Booking 73 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $485). 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 December 12, 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 36% 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 December 12, 2025.

The most flights from LHR to WAS are scheduled on a Wednesday (26 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (18 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 40% 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.

How often are flights from London to Washington, D.C. delayed?

About 17% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 131 minutes.

What is the most punctual flight time for London to Washington, D.C. flights?

Historically, flights departing in the early afternoon are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Washington, D.C. flights?

Over the last year, Virgin Atlantic have had the lowest number of delays on this route, with just 8% of flights being delayed.

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

AI-powered summary based on content written by travel experts. AI can make mistakes.
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 December 12, 2025.
Read reviews from past customers who have flown Delta, Virgin Atlantic, and United 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
7.9
Good
8,005 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,005 reviews
Delta
7.9
Good
8,005 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Virgin Atlantic
7.5
Good
675 reviews
Delta
7.9
Good
8,005 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,005 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,049 reviews
Delta
7.9
Good
8,005 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,571 reviews
Delta
7.9
Good
8,005 reviews

Overall

7.9

Boarding

8.1

Comfort

7.9

Entertainment

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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.?

    Icelandair, JetBlue, and Scandinavian Airlines can get you from London Heathrow Airport to Washington, D.C. in just under 11h 15m. Your travel time can differ by up to 5h 19m. The distance between London Heathrow Airport and Washington, D.C. is about 3664 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 $271, Scandinavian Airlines will fly you from London Heathrow Airport to Washington, D.C. and back. In addition to Scandinavian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and Austrian Airlines - these airlines can fly you to your destination from $320 and $431, respectively. Scandinavian Airlines is 63% 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 $453. Users have also found prices from $479 and $481 on Icelandair and Aer Lingus, 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 (94%), Air France (93%), Delta (93%).

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

    Looking at all options, your cheapest flight can be booked for $572. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $548 on average, our data indicates $1,492 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, February is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $485). 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
Tysons
Arlington
Owings Mills
Springfield
Hanover
Silver Spring
Fredericksburg
Fairfax
Linthicum Heights
Manassas
Rockville
Laurel
Towson
National Harbor
Bowie
Largo
McLean
Clinton

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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 December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$320Average$950FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$390Average$833FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$431Average$984FlexibilityNo cancel feeOn-time78%
TAP AIR PORTUGALCheapest$473Average$730FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$510Average$689FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$559Average$764FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$567Average$813FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$593Average$819FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$635Average$663FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$649Average$862FlexibilityNo cancel feeOn-time76%

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