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$333+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LHR
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
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 March 11, 2026.

This FlightHub deal was found by Cheapflights users on 3/8. 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.
Tue 4/286:00 am
DCA
-
LHR
2 stops22h 35m
Scandinavian Airlines
Fri 5/17:05 am
LHR
-
DCA
2 stops20h 36m
Scandinavian Airlines
Deal found 3/8$670
This Gotogate deal was found by Cheapflights users on 3/8. 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.
Mon 4/2012:55 pm
DCA
-
LHR
2 stops27h 05m
Air Canada
Wed 4/296:50 am
LHR
-
DCA
2 stops13h 40m
Air Canada
Deal found 3/8$675
This Gotogate deal was found by Cheapflights users on 3/8. 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.
Mon 3/2312:55 pm
DCA
-
LHR
2 stops27h 40m
Air Canada
Wed 4/88:40 am
LHR
-
DCA
2 stops18h 15m
Air Canada
Deal found 3/8$679
This Scandinavian Airlines deal was found by Cheapflights users on 3/9. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:00 am
DCA
-
LHR
2 stops17h 35m
Scandinavian Airlines
Wed 5/67:50 pm
LHR
-
DCA
2 stops32h 34m
Scandinavian Airlines
Deal found 3/9$692
This Delta deal was found by Cheapflights users on 3/6. 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.
Wed 3/259:00 am
DCA
-
LHR
1 stop18h 50m
Delta
Tue 3/3111:45 am
LHR
-
DCA
2 stops15h 52m
Delta
Deal found 3/6$700
This Air Canada deal was found by Cheapflights users on 3/6. 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.
Wed 5/612:45 pm
DCA
-
LHR
1 stop14h 50m
Air Canada
Thu 5/146:50 am
LHR
-
DCA
2 stops20h 05m
Air Canada
Deal found 3/6$703
This The Travel House deal was found by Cheapflights users on 3/10. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:00 am
DCA
-
LHR
1 stop11h 40m
JetBlue
Wed 3/1812:20 pm
LHR
-
DCA
1 stop14h 39m
JetBlue
Deal found 3/10$704
This CheapOair deal was found by Cheapflights users on 3/9. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/112:55 pm
DCA
-
LHR
1 stop14h 40m
Air Canada
Fri 4/108:40 am
LHR
-
DCA
2 stops18h 15m
Air Canada
Deal found 3/9$705
This Air Canada deal was found by Cheapflights users on 3/7. 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.
Sun 4/2612:55 pm
DCA
-
LHR
2 stops12h 35m
Air Canada
Tue 5/56:50 am
LHR
-
DCA
2 stops13h 49m
Air Canada
Deal found 3/7$706
This Air Canada deal was found by Cheapflights users on 3/6. 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.
Wed 5/612:45 pm
DCA
-
LHR
2 stops16h 15m
Air Canada
Fri 5/156:50 am
LHR
-
DCA
2 stops13h 49m
Air Canada
Deal found 3/6$707

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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$668
(Trip.com)

One-way from

$333
(KAYAK)

Popular in

February

Cheapest in

November

Average price

$758
Provider with most accurate pricing for Washington, D.C. Reagan-National-London Heathrow flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-London Heathrow flights.
Search Deals
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. 15% potential increase in price ($159 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 11, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 3/22

5:30 pm-8:45 am

1 stop11h 15m

London Heathrow

Tue 3/31

4:50 pm-11:44 pm

1 stop11h 54m

$727

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 4/7

5:31 pm-9:40 pm

1 stop23h 09m

London Heathrow

Tue 4/14

2:10 pm-10:29 pm

1 stop13h 19m

$743

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 8/24

12:55 pm-6:30 am

1 stop12h 35m

London Heathrow

Sun 8/30

12:40 pm-4:57 pm

2 stops33h 17m

$765

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Fri 3/27

1:45 pm-11:10 am

1 stop17h 25m

London Heathrow

Tue 3/31

11:45 am-10:37 pm

2 stops15h 52m

$950

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 4/5

12:16 pm-9:20 am

2 stops16h 04m

London Heathrow

Fri 4/10

7:05 am-10:36 pm

2 stops20h 31m

$999

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Fri 4/17

5:31 pm-9:40 pm

1 stop23h 09m

London Heathrow

Thu 4/23

10:20 am-10:29 pm

2 stops17h 09m

$1,010

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 4/16

5:31 pm-9:40 pm

1 stop23h 09m

London Heathrow

Thu 4/23

10:20 am-10:29 pm

2 stops17h 09m

$1,010

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 3/30

12:16 pm-9:20 am

2 stops16h 04m

London Heathrow

Mon 4/13

7:50 pm-10:41 pm

2 stops31h 51m

$1,052

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 3/26

12:55 pm-6:30 am

2 stops13h 35m

London Heathrow

Sun 4/5

7:45 am-3:24 pm

1 stop12h 39m

$1,081

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Fri 7/3

11:00 am-9:00 pm

2 stops29h 00m

London Heathrow

Sun 7/5

9:30 am-3:38 pm

1 stop11h 08m

$1,093

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

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 March.
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 March 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 February is currently the most expensive (average of $1,390). 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.

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

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 March 11, 2026.
Read reviews from past customers who have flown Virgin Atlantic,United Airlines, andJetBlue 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.
Virgin Atlantic
7.5
Good
680 reviews

Boarding

7.7

Overall

7.5

Entertainment

7.6

Comfort

7.3

Crew

8.2

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
680 reviews
Virgin Atlantic
7.5
Good
680 reviews

Boarding

7.7

Overall

7.5

Entertainment

7.6

Comfort

7.3

Crew

8.2

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
United Airlines
7.4
Good
9,415 reviews
Virgin Atlantic
7.5
Good
680 reviews

Boarding

7.7

Overall

7.5

Entertainment

7.6

Comfort

7.3

Crew

8.2

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
JetBlue
7.2
Good
2,902 reviews
Virgin Atlantic
7.5
Good
680 reviews

Boarding

7.7

Overall

7.5

Entertainment

7.6

Comfort

7.3

Crew

8.2

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
American Airlines
7.1
Good
11,425 reviews
Virgin Atlantic
7.5
Good
680 reviews

Boarding

7.7

Overall

7.5

Entertainment

7.6

Comfort

7.3

Crew

8.2

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,781 reviews
Virgin Atlantic
7.5
Good
680 reviews

Boarding

7.7

Overall

7.5

Entertainment

7.6

Comfort

7.3

Crew

8.2

Food

6.9

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

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 $670, Scandinavian Airlines can have you in London Heathrow Airport from Washington, D.C. Reagan-National Airport in 22h 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 Iberia ($527) 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 February is currently the most expensive (average of $1,390). 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
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Northampton
Borehamwood
Broadway
Aylesbury
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne

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 March 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$822FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$497Average$863FlexibilityNo cancel feeOn-time71%
IberiaCheapest$527Average$695FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$529Average$731FlexibilityNo cancel feeOn-time70%
DeltaCheapest$558Average$895FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$577Average$758FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$598Average$853FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$626Average$902FlexibilityNo cancel feeOn-time72%

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