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$334+ Cheap flights from Reagan-National (DCA) 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LHR
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
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Cheap flight deals from Reagan-National to Heathrow

Cheapest flights from Reagan-National to Heathrow
Explore the most affordable flight options available from Reagan-National to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.

This Vliegwinkel deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/2312:55 pm
DCA
-
LHR
2 stops13h 15m
Air Canada
Tue 3/39:00 am
LHR
-
DCA
2 stops15h 45m
Air Canada
Deal found 2/9$574
This Gotogate deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:00 am
DCA
-
LHR
2 stops22h 20m
Air Canada
Tue 3/176:50 am
LHR
-
DCA
2 stops19h 06m
Air Canada
Deal found 2/9$588
This Mytrip deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/912:55 pm
DCA
-
LHR
2 stops14h 15m
Multiple Airlines
Mon 3/166:50 am
LHR
-
DCA
2 stops19h 06m
Multiple Airlines
Deal found 2/9$605
This Mytrip deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2512:55 pm
DCA
-
LHR
1 stop15h 25m
Multiple Airlines
Wed 3/46:50 am
LHR
-
DCA
2 stops13h 41m
Multiple Airlines
Deal found 2/11$606
This Gotogate deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1211:05 am
DCA
-
LHR
2 stops19h 00m
Multiple Airlines
Thu 3/196:50 am
LHR
-
DCA
2 stops19h 06m
Multiple Airlines
Deal found 2/10$607
This lol.travel deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/16:50 pm
DCA
-
LHR
1 stop11h 30m
Air Canada
Tue 3/101:25 pm
LHR
-
DCA
1 stop12h 31m
Air Canada
Deal found 2/11$619

Find flight deals from Reagan-National to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) 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 February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$574
(Vliegwinkel)

One-way from

$334
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$768
Provider with most accurate pricing for Washington, D.C. Reagan-National-London Heathrow flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-London Heathrow flights.
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From Washington, D.C. Reagan-National to London Heathrow
Search Deals
One-way flight from Washington, D.C. Reagan-National to London Heathrow
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($107 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Reagan-National 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 February 12, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport that are best for you.

Fly from

Reagan-National

Fly to

Heathrow

Route

Depart

Return

Price

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 3/12

7:00 am-8:35 pm

1 stop9h 35m

London Heathrow

Thu 3/19

6:50 am-4:32 pm

2 stops13h 42m

$632

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Fri 3/20

12:55 pm-9:20 am

1 stop16h 25m

London Heathrow

Thu 3/26

1:25 pm-9:56 pm

1 stop12h 31m

$649

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 3/1

12:55 pm-9:20 am

1 stop15h 25m

London Heathrow

Tue 3/24

1:25 pm-9:56 pm

1 stop12h 31m

$649

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 3/21

7:00 am-8:35 pm

1 stop9h 35m

London Heathrow

Thu 3/26

9:00 am-10:35 pm

2 stops17h 35m

$659

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 2/23

3:40 pm-6:55 am

1 stop10h 15m

London Heathrow

Fri 2/27

9:20 am-4:04 pm

1 stop11h 44m

$661

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 3/25

11:05 am-7:10 am

1 stop16h 05m

London Heathrow

Thu 4/2

9:30 am-12:01 pm

1 stop31h 31m

$666

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 3/1

3:40 pm-7:00 am

1 stop10h 20m

London Heathrow

Tue 3/10

12:55 pm-9:01 pm

1 stop12h 06m

$667

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 3/26

7:00 am-8:35 pm

1 stop9h 35m

London Heathrow

Thu 4/2

2:05 pm-9:53 pm

1 stop12h 48m

$671

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 3/26

6:00 am-9:20 pm

1 stop11h 20m

London Heathrow

Fri 4/3

9:30 am-3:30 pm

1 stop11h 00m

$671

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 5/11

4:20 pm-10:00 am

1 stop12h 40m

London Heathrow

Thu 5/21

10:25 am-4:57 pm

1 stop11h 32m

$676

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 24 results
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Compare providers for flights from Reagan-National 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 Reagan-National to Heathrow in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Trip.comPrice 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 Washington, D.C. Reagan-National Airport-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. Reagan-National Airport-London Heathrow Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Washington, D.C. Reagan-National Airport-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. Reagan-National Airport-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. Reagan-National Airport-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 Reagan-National to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Reagan-National 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. Reagan-National Airport to London Heathrow Airport

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

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to Heathrow. Price data was last updated on February 6, 2026.

The best time to book flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport?

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport (average of $31). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in June is currently the most expensive (average of $829). 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.

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 February 12, 2026.
Read reviews from past customers who have flown United Airlines, American Airlines, and JetBlue from Washington, D.C. Reagan-National Airport to London Heathrow Airport. 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
9,283 reviews

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

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
9,283 reviews
United Airlines
7.4
Good
9,283 reviews

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

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
7.2
Good
11,272 reviews
United Airlines
7.4
Good
9,283 reviews

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

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
JetBlue
7.2
Good
2,896 reviews
United Airlines
7.4
Good
9,283 reviews

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

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
Air Canada
7.1
Good
10,710 reviews
United Airlines
7.4
Good
9,283 reviews

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

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
7,733 reviews
United Airlines
7.4
Good
9,283 reviews

Overall

7.4

Boarding

7.7

Comfort

7.3

Food

6.6

Entertainment

7.1

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 Reagan-National 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. Reagan-National Airport to London Heathrow Airport?

    For as low as $632, United Airlines can have you in London Heathrow Airport from Washington, D.C. Reagan-National Airport in 9h 35m. The distance from Washington, D.C. Reagan-National Airport to London Heathrow Airport is about 3652 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    According to our current data, JetBlue ($31), American Airlines ($497), and Virgin Atlantic ($497) offers the cheapest pricing from Washington, D.C. Reagan-National Airport to London Heathrow Airport. JetBlue is currently priced 96% below the average price you’ll pay for this route.

  • Can I find deals for flights from Reagan-National to Heathrow that include hotel bookings?

    Yes. In addition to deals on Reagan-National to Heathrow flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Reagan-National to Heathrow?

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

  • Can I find deals for business class flights from Reagan-National to Heathrow?

    Yes. Cheapflights offers flight deals from Reagan-National 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. Reagan-National Airport to London Heathrow Airport?

    Currently, March is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport (average of $31). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in June is currently the most expensive (average of $829). 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
Ilford
Croydon
Hounslow
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Orpington
Northampton
Watford
Hayes
Borehamwood
Broadway
Aylesbury
Chipping Norton
Horley
Kingston upon Thames

Browse thousands of different options on Cheapflights for your next trip

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Top 8 airlines flying from Reagan-National to Heathrow

Discover the top 8 airlines that operate flights from Reagan-National 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 February 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$821FlexibilityNo cancel feeOn-time62%
Virgin AtlanticCheapest$497Average$945FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$497Average$774FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$529Average$749FlexibilityNo cancel feeOn-time70%
DeltaCheapest$558Average$750FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$562Average$686FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$598Average$779FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$633Average$771FlexibilityNo cancel feeOn-time67%

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