Heathrow

$292+ 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LHR
Aug 24 — Aug 311
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Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to London Heathrow are usually found in October or January, booked 44 days in advance, depart on a Tuesday or Monday and return on a Wednesday

Cheap 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 August 19, 2025.

Round-trip from

$597
(World Air Fares)

One-way from

$292
(Netflights)

Popular in

June

Cheapest in

October

Average price

$665
From Washington, D.C. Reagan-National to London Heathrow
One-way flight from Washington, D.C. Reagan-National to London Heathrow
Highest demand for flights based on searches. 14% potential increase in price ($135 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).
Average for round-trip flights in August 2025

Find 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 August 19, 2025.

This World Air Fares deal was found by Cheapflights users on 8/16. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/14:00 pmDCA - LHR
1 stop10h 15mLufthansa
Wed 10/89:30 amLHR - DCA
1 stop11h 21mLufthansa
Deal found 8/16$597
This Flightnetwork deal was found by Cheapflights users on 8/17. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/14:35 pmDCA - LHR
1 stop12h 00mAir Canada
Wed 10/89:30 amLHR - DCA
1 stop11h 21mAir Canada
Deal found 8/17$598
This lol.travel deal was found by Cheapflights users on 8/16. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/11:00 pmDCA - LHR
1 stop13h 15mUnited Airlines
Wed 10/82:05 pmLHR - DCA
1 stop12h 46mUnited Airlines
Deal found 8/16$602
This lol.travel deal was found by Cheapflights users on 8/16. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/13:25 pmDCA - LHR
1 stop10h 20mUnited Airlines
Tue 9/99:30 amLHR - DCA
1 stop11h 21mUnited Airlines
Deal found 8/16$605
This Ticket deal was found by Cheapflights users on 8/19. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/75:00 pmDCA - LHR
1 stop10h 50mKLM
Tue 9/1610:55 amLHR - DCA
1 stop12h 02mKLM
Deal found 8/19$613
This Booking.com deal was found by Cheapflights users on 8/19. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/54:35 pmDCA - LHR
1 stop12h 00mAir Canada
Tue 10/149:30 amLHR - DCA
1 stop11h 21mAir Canada
Deal found 8/19$614
This Flightnetwork deal was found by Cheapflights users on 8/17. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2212:55 pmDCA - LHR
1 stop12h 35mAir Canada
Wed 10/89:30 amLHR - DCA
1 stop11h 21mAir Canada
Deal found 8/17$616
This ResecentrumGruppen deal was found by Cheapflights users on 8/19. 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 ResecentrumGruppen is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/78:40 pmDCA - LHR
1 stop32h 20mAir Canada
Tue 9/169:30 amLHR - DCA
1 stop17h 21mAir Canada
Deal found 8/19$618
This Ticket deal was found by Cheapflights users on 8/18. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/15:00 pmDCA - LHR
1 stop10h 50mAir France
Tue 9/910:55 amLHR - DCA
1 stop12h 15mAir France
Deal found 8/18$621
This FlightHub deal was found by Cheapflights users on 8/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/1312:55 pmDCA - LHR
2 stops15h 40mMultiple Airlines
Wed 12/311:10 amLHR - DCA
2 stops15h 46mMultiple Airlines
Deal found 8/18$622
This Booking.com deal was found by Cheapflights users on 8/18. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1012:55 pmDCA - LHR
2 stops13h 15mAir Canada
Fri 11/146:50 amLHR - DCA
2 stops13h 41mAir Canada
Deal found 8/18$623

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 August 19, 2025.
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

Sun 9/7

5:00 pm-8:50 am

1 stop10h 50m

London Heathrow

Tue 9/16

10:55 am-5:57 pm

1 stop12h 02m

$613

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 10/5

4:35 pm-9:35 am

1 stop12h 00m

London Heathrow

Tue 10/14

6:50 am-3:51 pm

2 stops14h 01m

$622

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 11/10

4:10 pm-7:10 am

1 stop10h 00m

London Heathrow

Fri 11/14

6:50 am-3:31 pm

2 stops13h 41m

$623

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 11/10

12:55 pm-7:10 am

2 stops13h 15m

London Heathrow

Fri 11/14

6:50 am-3:31 pm

2 stops13h 41m

$623

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 11/2

5:00 am-6:10 am

1 stop20h 10m

London Heathrow

Thu 11/13

6:50 am-3:31 pm

2 stops13h 41m

$623

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 11/15

7:00 pm-5:55 am

1 stop29h 55m

London Heathrow

Thu 1/15

1:25 pm-10:26 am

1 stop26h 01m

$625

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 10/1

11:00 am-6:30 am

2 stops14h 30m

London Heathrow

Wed 10/8

6:50 am-3:51 pm

2 stops14h 01m

$626

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 9/10

4:35 pm-9:35 am

1 stop12h 00m

London Heathrow

Wed 9/17

6:50 am-3:51 pm

2 stops14h 01m

$627

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 10/29

4:35 pm-7:10 am

1 stop10h 35m

London Heathrow

Wed 11/5

6:50 am-3:31 pm

2 stops13h 41m

$627

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 10/14

9:40 am-6:30 am

1 stop15h 50m

London Heathrow

Wed 10/22

6:50 am-3:51 pm

2 stops14h 01m

$627

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/17

Showing 1-10 of 22 results
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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 August 8, 2025.

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, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport (average of $661). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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 DCA to LHR?

Find hourly flight availability from Reagan-National 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 August 19, 2025.

It’s optimal to fly from Washington, D.C. Reagan-National Airport to London Heathrow Airport in the afternoon. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight at noon.

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 August 19, 2025.
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.

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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 $613, KLM can have you in London Heathrow Airport from Washington, D.C. Reagan-National Airport in 10h 50m. 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), Delta ($421), and American Airlines ($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, November is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London Heathrow Airport (average of $661). Flying from Washington, D.C. Reagan-National Airport to London Heathrow Airport in June is currently the most expensive (average of $1,097). 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
Hayes
Thornton Heath
Southend-on-Sea
Harrow
Canterbury
Croydon
Dartford
Dover
Stratford-upon-Avon
Orpington
Northampton
Gatwick
Borehamwood
Broadway
Aylesbury
Chelmsford
Bedford
Folkestone
Chichester

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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 August 19, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$816FlexibilityNo cancel feeOn-time62%
DeltaCheapest$421Average$706FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$497Average$902FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$497Average$911FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$529Average$771FlexibilityNo cancel feeOn-time70%
IberiaCheapest$542Average$697FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$599Average$890FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$645Average$707FlexibilityNo cancel feeOn-time67%

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