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Washington, D.C.

$345+ 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 3/19. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — WAS
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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The best prices from London Heathrow to Washington, D.C. are usually found in February or January, booked 53 days in advance, depart on a Tuesday or Thursday 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$471
(Trip.com)

One-way from

$345
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$694

Good round-trip deal

$658 or less

Good one-way deal

$688 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. 9% potential increase in price ($83 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/127:30 amLHR - BWI
1 stop14h 30mMultiple Airlines
Wed 3/197:10 pmBWI - LHR
1 stop15h 45mMultiple Airlines
Deal found 2/19$471
This CrystalTravel deal was found by Cheapflights users on 2/19. 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 CrystalTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/241:05 pmLHR - BWI
1 stop11h 20mIcelandair
Mon 4/288:30 pmBWI - LHR
1 stop10h 25mIcelandair
Deal found 2/19$533
This JetBlue deal was found by Cheapflights users on 2/19. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/198:25 amLHR - DCA
1 stop12h 05mJetBlue
Tue 3/259:29 amDCA - LHR
1 stop16h 26mJetBlue
Deal found 2/19$561
This The Travel House deal was found by Cheapflights users on 2/19. 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.
Sat 3/1511:10 amLHR - DCA
1 stop25h 47mLufthansa
Fri 3/217:00 amDCA - LHR
1 stop9h 35mLufthansa
Deal found 2/19$565
This The Travel House deal was found by Cheapflights users on 2/20. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/16:00 pmLHR - IAD
1 stop20h 46mLufthansa
Tue 3/1811:35 pmIAD - LHR
Nonstop7h 15mLufthansa
Deal found 2/20$570
This Gotogate deal was found by Cheapflights users on 2/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/27:30 pmLHR - IAD
1 stop29h 29mScandinavian Airlines
Tue 4/1510:05 pmIAD - LHR
1 stop14h 35mScandinavian Airlines
Deal found 2/20$583
This The Travel House deal was found by Cheapflights users on 2/20. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/283:25 pmLHR - BWI
Nonstop8h 20mFinnair
Thu 3/2010:25 amBWI - LHR
2 stops15h 30mFinnair
Deal found 2/20$585
This The Travel House deal was found by Cheapflights users on 2/20. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/174:30 pmLHR - IAD
Nonstop8h 15mFinnair
Sat 3/296:27 amIAD - LHR
2 stops22h 48mFinnair
Deal found 2/20$590
This The Travel House deal was found by Cheapflights users on 2/20. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/281:30 pmLHR - DCA
1 stop12h 09mFinnair
Mon 3/32:54 pmDCA - LHR
1 stop14h 21mFinnair
Deal found 2/20$590
This EaseMyTrip deal was found by Cheapflights users on 2/20. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/2012:15 pmLHR - IAD
1 stop11h 10mIcelandair
Wed 3/268:40 pmIAD - LHR
1 stop18h 50mIcelandair
Deal found 2/20$594
This EaseMyTrip deal was found by Cheapflights users on 2/20. 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 EaseMyTrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/201:15 pmLHR - IAD
Nonstop8h 40mVirgin Atlantic
Wed 3/267:45 pmIAD - LHR
Nonstop7h 30mVirgin Atlantic
Deal found 2/20$622
This TravelUp deal was found by Cheapflights users on 2/20. 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.
Sat 3/13:10 pmLHR - IAD
Nonstop8h 40mAir France
Tue 3/187:25 pmIAD - LHR
Nonstop7h 30mAir France
Deal found 2/20$634

Find flights from Heathrow to Washington, D.C. within your budget

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 February 20, 2025.

Fly from

Heathrow

Fly to

Washington, D.C.

Route

Depart

Return

Price

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Wed 3/12

7:30 am-6:00 pm

1 stop14h 30m

Baltimore/Washington

Wed 3/19

7:10 pm-2:55 pm

1 stop15h 45m

$471

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Thu 4/24

1:05 pm-7:25 pm

1 stop11h 20m

Baltimore/Washington

Mon 4/28

8:30 pm-11:55 am

1 stop10h 25m

$533

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 3/19

8:25 am-4:30 pm

1 stop12h 05m

Washington, D.C. Reagan-National

Tue 3/25

9:29 am-5:55 am

1 stop16h 26m

$561

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 3/15

11:10 am-8:57 am

1 stop25h 47m

Washington, D.C. Reagan-National

Fri 3/21

7:00 am-8:35 pm

1 stop9h 35m

$565

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 3/1

6:00 pm-9:46 am

1 stop20h 46m

Washington, D.C. Dulles Intl

Tue 3/18

11:35 pm-10:50 am

Nonstop7h 15m

$570

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 4/2

7:30 pm-7:59 pm

1 stop29h 29m

Washington, D.C. Dulles Intl

Tue 4/15

10:05 pm-5:40 pm

1 stop14h 35m

$583

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 3/17

4:30 pm-8:45 pm

Nonstop8h 15m

Washington, D.C. Dulles Intl

Sat 3/29

6:27 am-9:15 am

2 stops22h 48m

$590

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 3/15

11:45 am-10:00 pm

1 stop14h 15m

Washington, D.C. Reagan-National

Fri 3/28

2:54 pm-6:15 am

1 stop11h 21m

$591

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 3/20

12:15 pm-7:25 pm

1 stop11h 10m

Washington, D.C. Dulles Intl

Wed 3/26

8:40 pm-7:30 pm

1 stop18h 50m

$594

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Mon 3/17

11:00 am-9:46 pm

1 stop14h 46m

Baltimore/Washington

Thu 3/27

10:25 am-10:15 am

2 stops19h 50m

$596

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 58 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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star

*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.

Travel insights for flights from Heathrow to Washington, D.C.

Get recent, data-driven insights about flights from Heathrow to Washington, D.C. including ideal travel times, pricing trends, and more.

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 February 14, 2025.

Booking 53 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, August is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $309). Flying from London Heathrow Airport to Washington, D.C. in June is currently the most expensive (average of $389). 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 February 20, 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 34% 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 Friday 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 February 20, 2025.

The most flights from LHR to WAS are scheduled on a Monday (22 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (17 on average).

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 February 20, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Finnair from London to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,219 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,274 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Austrian Airlines
7.6
Good
773 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,219 reviews

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    Currently priced at $545, Icelandair will fly you from London Heathrow Airport to Washington, D.C. and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from JetBlue and Lufthansa - these airlines can fly you to your destination from $561 and $565, respectively. Icelandair is 32% 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 WestJet. According to our data, you can fly for as low as $509. Users have also found prices from $543 and $577 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: Air Canada (90%), Austrian Airlines (90%), Copa Airlines (90%).

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

    Looking at all options, your cheapest flight can be booked for $594. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $476 on average our data indicates $1,388 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, August is the cheapest month in which you can book a flight from London Heathrow Airport to Washington, D.C. (average of $309). Flying from London Heathrow Airport to Washington, D.C. in June is currently the most expensive (average of $389). 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 London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Springfield
Rockville
Tysons
Gaithersburg
Silver Spring
Fredericksburg
Linthicum Heights
Laurel
Falls Church
Woodbridge
Easton
Herndon
Bowie
Reston
National Harbor
Oxon Hill
Gettysburg

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.

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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$390Average$758FlexibilityNo cancel feeOn-time77%
PLAYCheapest$392Average$560FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$517Average$841FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$564Average$809FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$586Average$977FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$595Average$923FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$608Average$858FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$619Average$881FlexibilityNo cancel feeOn-time71%
DeltaCheapest$652Average$1,041FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$660Average$816FlexibilityNo cancel feeOn-timeN/A
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