HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Heathrow

$192+ Cheap flights from Washington, D.C. (WAS) to Heathrow (LHR)

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington, D.C. to Heathrow with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Washington, D.C. to London Heathrow are usually found in October or April, booked 43 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

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

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Heathrow (LHR). 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 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$480
(Mytrip)

One-way from

$192
(Flightnetwork)

Popular in

June

Cheapest in

October

Average price

$915
Provider with most accurate pricing for Washington, D.C. (WAS)-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London Heathrow flights.
Search Deals
From Washington, D.C. (WAS) to London Heathrow
Search Deals
One-way flight from Washington, D.C. (WAS) to London Heathrow
Search Deals
High demand for flights, 16% potential price rise
Search Deals
Best time to find cheap flights, 3% potential price drop
Search Deals
Average for round-trip flights in December 2024
Search Deals

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

Cheapest flights from Washington, D.C. to Heathrow
Explore the most affordable flight options available from Washington, D.C. to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2024.

This JetBlue deal was found by Cheapflights users on 12/17. 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 12/3110:45 amDCA - LHR
1 stop14h 10mJetBlue
Sun 1/197:25 amLHR - DCA
1 stop18h 15mJetBlue
Deal found 12/17$630
This Delta deal was found by Cheapflights users on 12/17. 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.
Tue 12/316:25 pmIAD - LHR
Nonstop7h 30mDelta
Tue 1/218:40 amLHR - IAD
1 stop12h 05mDelta
Deal found 12/17$639
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/305:50 pmIAD - LHR
1 stop13h 55mLufthansa
Tue 1/218:30 amLHR - IAD
1 stop12h 20mLufthansa
Deal found 12/17$641
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/305:50 pmIAD - LHR
1 stop13h 55mMultiple Airlines
Mon 1/207:25 pmLHR - IAD
1 stop24h 10mMultiple Airlines
Deal found 12/17$655
This Delta deal was found by Cheapflights users on 12/17. 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.
Tue 12/314:00 pmDCA - LHR
1 stop10h 55mDelta
Tue 1/218:50 amLHR - DCA
1 stop11h 55mDelta
Deal found 12/17$658
This Expedia deal was found by Cheapflights users on 12/17. 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.
Sun 12/297:40 pmIAD - LHR
1 stop10h 10mIcelandair
Wed 1/2212:15 pmLHR - IAD
1 stop11h 10mIcelandair
Deal found 12/17$658
This Kiwi.com deal was found by Cheapflights users on 12/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/296:00 pmIAD - LHR
1 stop33h 20mAustrian Airlines
Fri 1/246:00 amLHR - IAD
1 stop13h 35mAustrian Airlines
Deal found 12/17$669
This Booking.com deal was found by Cheapflights users on 12/17. 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 12/177:30 pmBWI - LHR
1 stop19h 00mIcelandair
Thu 5/221:05 pmLHR - BWI
1 stop11h 20mIcelandair
Deal found 12/17$677
This Scandinavian Airlines deal was found by Cheapflights users on 12/18. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/305:10 pmIAD - LHR
1 stop11h 10mScandinavian Airlines
Sun 1/127:30 pmLHR - IAD
1 stop25h 10mScandinavian Airlines
Deal found 12/18$684
This Air Canada deal was found by Cheapflights users on 12/17. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/314:00 pmDCA - LHR
1 stop10h 10mMultiple Airlines
Thu 1/239:30 amLHR - DCA
2 stops15h 27mMultiple Airlines
Deal found 12/17$691
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/315:37 pmIAD - LHR
1 stop9h 48mUnited Airlines
Wed 1/84:20 pmLHR - IAD
Nonstop8h 55mUnited Airlines
Deal found 12/17$699
This United Airlines deal was found by Cheapflights users on 12/16. 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.
Mon 12/305:16 pmBWI - LHR
1 stop33h 39mUnited Airlines
Sun 2/166:00 pmLHR - BWI
2 stops44h 55mUnited Airlines
Deal found 12/16$700

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

Customize your flight search to find flights from Washington, D.C. to Heathrow 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 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Fri 1/31

8:00 am-11:50 am

2 stops22h 50m

London Heathrow

Sun 2/2

6:50 am-7:10 pm

3 stops17h 20m

$480

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Mon 1/13

7:30 pm-7:30 pm

1 stop19h 00m

London Heathrow

Tue 1/28

12:15 pm-6:30 pm

1 stop11h 15m

$481

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 2/19

10:30 pm-3:30 pm

1 stop12h 00m

London Heathrow

Mon 2/24

6:30 pm-2:30 pm

1 stop25h 00m

$536

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 4/29

8:30 pm-11:55 am

1 stop10h 25m

London Heathrow

Wed 5/7

1:05 pm-7:15 pm

1 stop11h 10m

$537

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 3/9

6:10 pm-5:40 pm

1 stop19h 30m

London Heathrow

Sun 3/16

7:30 pm-4:40 pm

1 stop25h 10m

$538

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 3/2

7:59 am-5:55 am

1 stop16h 56m

London Heathrow

Tue 3/11

8:25 am-4:30 pm

1 stop12h 05m

$540

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Wed 3/5

8:30 pm-8:40 am

Nonstop7h 10m

London Heathrow

Wed 3/12

3:25 pm-7:45 pm

Nonstop8h 20m

$589

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 1/12

4:10 pm-7:10 am

1 stop10h 00m

London Heathrow

Tue 1/21

3:00 pm-10:29 am

1 stop24h 29m

$603

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 1/12

6:25 pm-6:55 am

Nonstop7h 30m

London Heathrow

Tue 1/21

8:40 am-3:45 pm

1 stop12h 05m

$605

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 1/12

6:25 pm-6:55 am

Nonstop7h 30m

London Heathrow

Tue 1/21

11:45 am-3:45 pm

1 stop33h 00m

$633

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/17

Showing 1-10 of 60 results
1
2
3
...
6

Compare providers for flights from Washington, D.C. to Heathrow

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 Washington, D.C. to Heathrow in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*2 stars
GotogatePrice Accuracy2 starsTrust Score*2 stars
MytripPrice 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 Washington, D.C.-London Heathrow Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C.-London Heathrow Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-London Heathrow Airport 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 Washington, D.C.-London Heathrow Airport 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 Washington, D.C. to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Washington, D.C. 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 Washington, D.C. to Heathrow

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

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

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Heathrow. Price data was last updated on December 13, 2024.

Booking 43 days in advance of your planned departure date is, on average, the best time to get cheap flights from Washington, D.C. to London Heathrow Airport. 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 Washington, D.C. to London Heathrow Airport?

Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of $661). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of $1,135). 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 WAS to LHR?

Find hourly flight availability from Washington, D.C. to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

It’s typically best to fly out from Washington, D.C. to London Heathrow Airport in the morning. Doing so could potentially save you 12% on the flight price compared to flying at noon, which is usually more expensive.

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

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

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

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

Explore weekly flight availability from Washington, D.C. to Heathrow. 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 18, 2024.

The most flights from WAS to LHR are scheduled on a Tuesday (27 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (17 on average).

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated December 18, 2024.
See what other customers who have flown with JetBlue, Air Canada and KLM from Washington, D.C. to London have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,604 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,349 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.7
Good
1,285 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Austrian Airlines
7.6
Good
787 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.6
Good
1,606 reviews
Delta
8.0
Very good
8,604 reviews

Crew

8.6

Overall

8.0

Comfort

7.9

Food

7.3

Boarding

8.2

Entertainment

7.9

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Heathrow. 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 Washington, D.C. to London Heathrow Airport round-trip?

    Flying on Icelandair is currently your cheapest option to London Heathrow Airport, with prices starting at $481. Additional round-trip tickets that might be worth considering are offered by TAP AIR PORTUGAL and Scandinavian Airlines, with the lowest prices starting at $536 and $538, respectively. Icelandair is currently priced 38% below the average price you’ll pay for this route.

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

    One-way options have recently been found by users for as low as $192 on Icelandair. Other airlines that offer cheap prices include JetBlue from $248 and TAP AIR PORTUGAL from $299 one-way.

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

    The most popular flight routes from Washington, D.C. to London Heathrow Airport are Washington, D.C. Dulles Intl - London Heathrow, Baltimore/Washington - London Heathrow and Washington, D.C. Reagan-National - London Heathrow.

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

    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 Washington, D.C. to London Heathrow Airport on time: Virgin Atlantic (86%), Singapore Airlines (86%), Air France (84%).

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

    Looking at all options, your cheapest flight can be booked for $393. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for $459 on average our data indicates $1,621 when flying from Washington, D.C. to London Heathrow Airport.

  • Where are the most common layover locations when flying from Washington, D.C. to London Heathrow Airport?

    Washington, D.C. to London Heathrow Airport flights have a layover in Reykjavik most of the time.

  • What are some popular things to do or see while on a layover in Reykjavik?

    Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool are the most popular attractions in Reykjavik if you're in need of something to do during your layover. Hallgrímskirkja, Harpa, and Laugardalslaug Geothermal Pool can be accessed by traveling approximately 23.2 mi, 23.3 mi, and 24.6 mi, respectively from Reykjavik Keflavik Intl. Those looking to explore during their layover in Reykjavik can rent a car from Reykjavik Keflavik Intl for about $50 per day.

  • Where are the least popular layover locations for Washington, D.C. to London Heathrow Airport flights?

    Washington, D.C. to London Heathrow Airport flights that have layovers will least frequently stop in Dublin.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington, D.C. to Heathrow 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 Washington, D.C. to London Heathrow Airport?

    Currently, November is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of $661). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of $1,135). 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

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 Washington, D.C. to Heathrow

Discover the top 10 airlines that operate flights from Washington, D.C. to Heathrow. 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 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
Scandinavian AirlinesCheapest$370Average$603FlexibilityNo cancel feeOn-time77%
PLAYCheapest$377Average$581FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$398Average$646FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$476Average$675FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$479Average$589FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$542Average$734FlexibilityNo cancel feeOn-time77%
KLMCheapest$546Average$771FlexibilityNo cancel feeOn-time75%
DeltaCheapest$548Average$845FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$551Average$706FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$557Average$842FlexibilityNo cancel feeOn-time76%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.