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Washington, D.C.

$445+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — WAS
Aug 20 — Aug 271
Thu 8/20
Thu 8/27
1 adult, Economy
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1. Tell us where you want to go

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3. Compare prices and book

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Cheapflights Tip: The best prices from London Heathrow to Washington, D.C. are usually found in January or September, booked 78 days in advance, depart on a Wednesday or Thursday 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 July 21, 2026.

This oojo deal was found by Cheapflights users on 7/20. 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.
Wed 9/96:45 pm
LHR
-
IAD
1 stop25h 25m
TAP AIR PORTUGAL
Tue 9/1510:35 pm
IAD
-
LHR
1 stop19h 20m
TAP AIR PORTUGAL
Deal found 7/20$587
This Gotogate deal was found by Cheapflights users on 7/18. 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 9/11:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Mon 9/148:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Deal found 7/18$588
This Expedia deal was found by Cheapflights users on 7/18. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/16:00 am
LHR
-
IAD
1 stop14h 10m
TAP AIR PORTUGAL
Sun 9/610:35 pm
IAD
-
LHR
1 stop19h 20m
TAP AIR PORTUGAL
Deal found 7/18$589
This United Airlines deal was found by Cheapflights users on 7/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/138:45 am
LHR
-
IAD
1 stop13h 00m
United Airlines
Wed 10/148:30 am
IAD
-
LHR
1 stop17h 55m
United Airlines
Deal found 7/16$590
This FlightHub deal was found by Cheapflights users on 7/21. 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.
Mon 10/129:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Wed 10/2111:15 pm
IAD
-
LHR
1 stop16h 05m
Icelandair
Deal found 7/21$591
This The Travel House deal was found by Cheapflights users on 7/19. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/319:25 pm
LHR
-
IAD
1 stop29h 50m
Icelandair
Mon 9/78:30 pm
IAD
-
LHR
1 stop18h 50m
Icelandair
Deal found 7/19$592
This Gotogate deal was found by Cheapflights users on 7/16. 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.
Wed 9/91:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Mon 9/148:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Deal found 7/16$593
This TravelUp deal was found by Cheapflights users on 7/20. 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 10/238:00 am
LHR
-
IAD
1 stop17h 35m
TAP AIR PORTUGAL
Tue 10/276:25 pm
IAD
-
LHR
1 stop14h 15m
TAP AIR PORTUGAL
Deal found 7/20$596
This TravelUp deal was found by Cheapflights users on 7/20. 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 8/266:55 am
LHR
-
IAD
1 stop13h 10m
Lufthansa
Sat 8/296:30 pm
IAD
-
LHR
Nonstop7h 25m
Lufthansa
Deal found 7/20$597
This Gotogate deal was found by Cheapflights users on 7/16. 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.
Fri 9/186:00 am
LHR
-
IAD
1 stop13h 25m
TAP AIR PORTUGAL
Sun 9/205:40 pm
IAD
-
LHR
1 stop14h 05m
TAP AIR PORTUGAL
Deal found 7/16$598
This United Airlines deal was found by Cheapflights users on 7/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/198:30 am
LHR
-
DCA
1 stop29h 25m
United Airlines
Mon 9/216:00 am
DCA
-
LHR
1 stop10h 35m
United Airlines
Deal found 7/16$604
This TravelUp deal was found by Cheapflights users on 7/16. 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.
Mon 11/99:00 am
LHR
-
DCA
2 stops15h 58m
Air Canada
Mon 11/1612:55 pm
DCA
-
LHR
1 stop12h 35m
Air Canada
Deal found 7/16$612

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 July 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$587
(oojo)

One-way from

$445
(Booking.com)

Popular in

June

Cheapest in

January

Average price

$756

Good round-trip deal

$702 or less

Good one-way deal

$489 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)
Search Deals
One-way flight from London Heathrow to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($56 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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).
Search Deals

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 July 21, 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 10/3

1:30 pm-8:00 pm

1 stop11h 30m

Washington, D.C. Dulles Intl

Wed 10/14

10:05 pm-10:40 am

Nonstop7h 35m

$631

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 9/12

6:50 am-1:30 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Sat 9/19

3:40 pm-11:55 am

1 stop15h 15m

$633

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 8/21

6:50 am-2:20 pm

1 stop12h 30m

Washington, D.C. Dulles Intl

Tue 9/1

6:16 am-8:40 pm

1 stop9h 24m

$633

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 9/18

9:30 am-4:05 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Wed 10/7

12:38 pm-10:00 am

2 stops16h 22m

$634

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 12/19

11:05 am-2:30 pm

1 stop32h 25m

Washington, D.C. Dulles Intl

Sun 1/3

5:20 pm-9:10 am

1 stop10h 50m

$645

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 8/30

9:30 am-4:05 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sun 9/6

6:30 pm-6:55 am

Nonstop7h 25m

$651

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 9/8

8:30 am-3:10 pm

1 stop11h 40m

Washington, D.C. Dulles Intl

Tue 9/15

6:35 pm-6:55 am

Nonstop7h 20m

$653

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Sun 8/30

9:25 pm-7:25 pm

1 stop27h 00m

Baltimore/Washington

Sun 9/6

8:30 pm-8:20 pm

1 stop18h 50m

$662

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 10/1

12:15 pm-3:30 pm

Nonstop8h 15m

Washington, D.C. Dulles Intl

Mon 10/12

6:35 pm-6:55 am

Nonstop7h 20m

$663

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 9/23

2:10 pm-12:00 pm

1 stop26h 50m

Washington, D.C. Reagan-National

Sun 9/27

2:05 pm-6:45 am

1 stop11h 40m

$663

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/17

Showing 1-10 of 60 resultsSorted by cheapest first
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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 July.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
GurufarePrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy3 starsTrust Score*3 stars
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.

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 $636). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of $779). 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 July 21, 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Washington, D.C. as you normally would.

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 July 21, 2026.

The most flights from LHR to WAS are scheduled on a Monday (29 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (29 on average).

How much does it cost to fly round-trip from London Heathrow Airport to Washington, D.C.?

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.

Dublin (DUB) – chosen by Cheapflights users on 25% 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 Reykjavik (KEF) have the shortest average one-way travel time for 1-stop routes: 11h 15m.

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 25m.

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 139 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?

Saturday 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, United Airlines have had the lowest number of delays on this route, with just 11% of flights being delayed.

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

Booking 81 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.

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
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on British Airways

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 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

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 July 21, 2026.
Read reviews from past customers who have flown United Airlines,Aer Lingus, andAmerican 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.
United Airlines
7.4
Good
10,017 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
10,017 reviews
United Airlines
7.4
Good
10,017 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.3
Good
1,676 reviews
United Airlines
7.4
Good
10,017 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
American Airlines
7.1
Good
11,838 reviews
United Airlines
7.4
Good
10,017 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Lufthansa
6.8
Okay
8,152 reviews
United Airlines
7.4
Good
10,017 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
8,124 reviews
United Airlines
7.4
Good
10,017 reviews

Comfort

7.3

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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.?

    Lufthansa, United Airlines, and Icelandair can get you from London Heathrow Airport to Washington, D.C. in just under 11h 30m. Your travel time can differ by up to 15h 30m. 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 $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 Austrian Airlines and Lufthansa - these airlines can fly you to your destination from $534 and $536, respectively. Delta is 54% 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 Virgin Atlantic. According to our data, you can fly for as low as $334. Users have also found prices from $445 and $455 on Aer Lingus and JetBlue, 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: Air Canada (85%), Austrian Airlines (85%), Copa Airlines (85%).

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

    Looking at all options, your cheapest flight can be booked for $466. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $443 on average, our data indicates $2,483 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 $636). Flying from London Heathrow Airport to Washington, D.C. in July is currently the most expensive (average of $779). 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.

See more FAQs

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Tysons
Arlington
Owings Mills
Springfield
Lanham
Reston
Herndon
Rockville
Hyattsville
Fredericksburg
Falls Church
Hanover
Manassas
Laurel
Clinton
Hunt Valley
Cordova
Woodbridge
Largo

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Heathrow to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Dulles Intl flights
Heathrow to Reagan-National flights
Gatwick to Dulles Intl flights
London City to Dulles Intl flights

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 July 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$320Average$908FlexibilityNo cancel feeOn-timeN/A
Austrian AirlinesCheapest$534Average$743FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$536Average$740FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$544Average$656FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$559Average$796FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$566Average$749FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$567Average$784FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$635Average$663FlexibilityNo cancel feeOn-time67%
Aer LingusCheapest$658Average$823FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$670Average$777FlexibilityNo cancel feeOn-time72%

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