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$250+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to London Heathrow are usually found in September or August, booked 63 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

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 November 3, 2025.

This Booking.com deal was found by Cheapflights users on 11/2. 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.
Sun 11/910:20 pmIAD - LHR
Nonstop7h 30mVirgin Atlantic
Tue 11/184:50 pmLHR - IAD
Nonstop8h 40mVirgin Atlantic
Deal found 11/2$562
This oojo deal was found by Cheapflights users on 11/2. 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.
Thu 12/115:30 pmIAD - LHR
1 stop19h 00mTAP AIR PORTUGAL
Tue 12/166:00 amLHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Deal found 11/2$565
This KAYAK deal was found by Cheapflights users on 11/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:40 pmIAD - LHR
1 stop18h 50mIcelandair
Sun 11/238:35 pmLHR - IAD
1 stop26h 55mIcelandair
Deal found 11/1$568
This lastminute.com deal was found by Cheapflights users on 11/2. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/95:03 pmDCA - LHR
1 stop10h 02mVirgin Atlantic
Tue 11/184:35 pmLHR - DCA
1 stop11h 21mVirgin Atlantic
Deal found 11/2$569
This Icelandair deal was found by Cheapflights users on 11/2. 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 Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/97:40 pmIAD - LHR
1 stop10h 10mIcelandair
Wed 12/178:35 pmLHR - IAD
1 stop26h 55mIcelandair
Deal found 11/2$569
This KAYAK deal was found by Cheapflights users on 10/30. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/17:40 pmIAD - LHR
1 stop10h 10mIcelandair
Wed 12/178:35 pmLHR - IAD
1 stop26h 55mIcelandair
Deal found 10/30$571
This Mytrip deal was found by Cheapflights users on 11/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:20 pmIAD - LHR
Nonstop7h 10mFinnair
Tue 12/1612:10 pmLHR - IAD
Nonstop8h 25mFinnair
Deal found 11/1$572
This Scandinavian Airlines deal was found by Cheapflights users on 11/2. 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.
Tue 11/2512:11 pmIAD - LHR
2 stops22h 49mScandinavian Airlines
Tue 12/27:50 pmLHR - IAD
2 stops26h 25mScandinavian Airlines
Deal found 11/2$573
This Expedia deal was found by Cheapflights users on 11/1. 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 12/25:45 pmDCA - LHR
1 stop10h 55mIberia
Tue 12/911:25 amLHR - DCA
2 stops36h 32mIberia
Deal found 11/1$577
This FlightHub deal was found by Cheapflights users on 10/31. 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 11/171:15 pmDCA - LHR
2 stops23h 25mScandinavian Airlines
Sat 11/225:00 pmLHR - DCA
2 stops34h 56mScandinavian Airlines
Deal found 10/31$578
This oojo deal was found by Cheapflights users on 10/31. 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.
Fri 12/127:40 pmBWI - LHR
1 stop10h 10mIcelandair
Sun 12/288:35 pmLHR - BWI
1 stop27h 05mIcelandair
Deal found 10/31$585
This Delta deal was found by Cheapflights users on 11/2. 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.
Sun 11/95:03 pmDCA - LHR
1 stop10h 02mDelta
Tue 11/189:40 amLHR - DCA
1 stop11h 19mDelta
Deal found 11/2$585

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 November 3, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$561
(CrystalTravel)

One-way from

$250
(Mytrip)

Popular in

June

Cheapest in

September

Average price

$729

Good round-trip deal

$671 or less

Good one-way deal

$442 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London Heathrow flights.
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From Washington, D.C. (WAS) to London Heathrow
Search Deals
One-way flight from Washington, D.C. (WAS) to London Heathrow
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($124 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to London Heathrow.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to London Heathrow.
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Cheapflights Fare Finder

 
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 November 3, 2025.
Use the filters below to find and compare flights from Washington, D.C. to London Heathrow Airport that are best for you.

Fly from

Washington, D.C.

Fly to

Heathrow

Route

Depart

Return

Price

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 11/9

10:20 pm-10:50 am

Nonstop7h 30m

London Heathrow

Wed 11/19

8:55 am-4:35 pm

1 stop12h 40m

$576

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 12/8

10:20 pm-10:50 am

Nonstop7h 30m

London Heathrow

Sun 12/14

6:30 am-4:05 pm

1 stop14h 35m

$579

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 11/30

10:20 pm-10:50 am

Nonstop7h 30m

London Heathrow

Wed 12/17

10:00 am-4:05 pm

1 stop11h 05m

$581

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 11/9

10:20 pm-10:50 am

Nonstop7h 30m

London Heathrow

Tue 11/18

4:50 pm-8:30 pm

Nonstop8h 40m

$582

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 11/10

10:20 pm-10:50 am

Nonstop7h 30m

London Heathrow

Fri 11/28

4:50 pm-8:30 pm

Nonstop8h 40m

$582

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 11/26

7:21 pm-11:40 am

1 stop11h 19m

London Heathrow

Tue 12/2

4:50 pm-8:30 pm

Nonstop8h 40m

$587

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 1/21

10:20 pm-10:50 am

Nonstop7h 30m

London Heathrow

Sun 1/25

8:40 am-4:05 pm

1 stop12h 25m

$587

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 11/26

7:21 pm-11:40 am

1 stop11h 19m

London Heathrow

Fri 12/5

4:50 pm-8:30 pm

Nonstop8h 40m

$588

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 1/12

9:45 pm-10:00 am

Nonstop7h 15m

London Heathrow

Tue 1/20

4:25 pm-7:55 pm

Nonstop8h 30m

$591

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 11/18

5:03 pm-8:05 am

1 stop10h 02m

London Heathrow

Wed 11/26

4:35 pm-10:56 pm

1 stop11h 21m

$597

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 60 results
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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 November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust 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 Washington, D.C.-London Heathrow Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-London Heathrow Airport flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

Cheapflights Insights

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

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 October 31, 2025.

Booking 63 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, March is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of $31). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of $748). 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 November 3, 2025.

It’s typically best to fly out from Washington, D.C. to London Heathrow Airport in the morning. Doing so could potentially save you 26% 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 evenings 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 November 3, 2025.

The most flights from WAS to LHR are scheduled on a Wednesday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (19 on average).

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

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

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

Reykjavik (KEF) – chosen by Cheapflights users on 61% of 1-stop itineraries from Washington, D.C. to London Heathrow Airport on Cheapflights.

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

Average round-trip fare for 1-stop flights from Washington, D.C. to London Heathrow Airport, 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 $479.

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

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

Flights via Montreal (YUL) have the shortest average one-way travel time for 1-stop routes: 9h 20m.

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

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

Flights via Montreal (YUL) offer the fastest connection on this route, with an average layover time of 1h 24m.

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

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

For evening departures, expect crowded check-in areas at IAD. Plan extra time for security and navigating the terminal layout.

Read more about IADby Ramsey Qubein
LHR

Take the Heathrow Express for the fastest route to central London from LHR. It connects to Paddington Station for further travel options.

Read more about LHRby Ramsey Qubein
Our travel experts
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 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 November 3, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and Icelandair from Washington, D.C. to London Heathrow Airport 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.
United Airlines
7.4
Good
8,994 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,994 reviews
United Airlines
7.4
Good
8,994 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,032 reviews
United Airlines
7.4
Good
8,994 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Icelandair
7.1
Good
566 reviews
United Airlines
7.4
Good
8,994 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Iberia
7.0
Good
3,005 reviews
United Airlines
7.4
Good
8,994 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
British Airways
6.7
Okay
7,494 reviews
United Airlines
7.4
Good
8,994 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Comfort

7.3

Crew

8.1

Boarding

7.7

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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.

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

    There are many flights that can get you from Washington, D.C. to London Heathrow Airport in 7h 05m. Fly via Delta, KLM, or British Airways to get the fastest option. The distance between Washington, D.C. and London Heathrow Airport is about 3622 mi. This flight may include one or multiple stops.

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

    Flying on JetBlue is currently your cheapest option to London Heathrow Airport, with prices starting at $31. Additional round-trip tickets that might be worth considering are offered by PLAY and TAP AIR PORTUGAL, with the lowest prices starting at $372 and $395, respectively. JetBlue is currently priced 95% 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 $277 on JetBlue. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $329 and Scandinavian Airlines from $349 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: KLM (88%), Aer Lingus (85%), American Airlines (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 $380. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for $420 on average, our data indicates $2,159 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 $48 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, March is the cheapest month in which you can book a flight from Washington, D.C. to London Heathrow Airport (average of $31). Flying from Washington, D.C. to London Heathrow Airport in June is currently the most expensive (average of $748). 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
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone

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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$799FlexibilityNo cancel feeOn-time62%
TAP AIR PORTUGALCheapest$395Average$580FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$397Average$900FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$424Average$596FlexibilityNo cancel feeOn-time77%
PLAYCheapest$429Average$521FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$432Average$576FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$497Average$851FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$497Average$850FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$506Average$837FlexibilityNo cancel feeOn-time69%
KLMCheapest$520Average$654FlexibilityNo cancel feeOn-time75%

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