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$397+ 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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LHR
May 28 — Jun 41
Thu 5/28
Thu 6/4
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 April 28, 2026.

This lol.travel deal was found by Cheapflights users on 4/26. 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 5/104:20 pm
DCA
-
LHR
1 stop12h 40m
Air Canada
Tue 5/199:30 am
LHR
-
DCA
1 stop11h 09m
Air Canada
Deal found 4/26$834
This Justfly.com deal was found by Cheapflights users on 4/27. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:09 am
DCA
-
LHR
2 stops27h 26m
Scandinavian Airlines
Sun 5/1010:20 am
LHR
-
DCA
2 stops18h 04m
Scandinavian Airlines
Deal found 4/27$835
This KAYAK deal was found by Cheapflights users on 4/23. 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.
Tue 9/292:54 pm
DCA
-
LHR
1 stop14h 21m
British Airways
Tue 10/67:25 pm
LHR
-
DCA
1 stop17h 24m
British Airways
Deal found 4/23$837
This Mytrip deal was found by Cheapflights users on 4/24. 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.
Tue 5/266:00 am
DCA
-
LHR
3 stops24h 55m
Multiple Airlines
Tue 6/21:05 pm
LHR
-
DCA
3 stops31h 34m
Multiple Airlines
Deal found 4/24$840
This FlightHub deal was found by Cheapflights users on 4/27. 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.
Thu 10/156:05 am
DCA
-
LHR
2 stops22h 30m
Scandinavian Airlines
Mon 10/197:05 am
LHR
-
DCA
2 stops20h 59m
Scandinavian Airlines
Deal found 4/27$843
This Flighttix deal was found by Cheapflights users on 4/23. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/266:00 am
DCA
-
LHR
1 stop9h 45m
JetBlue
Sun 5/108:40 am
LHR
-
DCA
1 stop28h 19m
JetBlue
Deal found 4/23$853
This Air Canada deal was found by Cheapflights users on 4/27. 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.
Mon 11/212:55 pm
DCA
-
LHR
1 stop15h 25m
Air Canada
Thu 11/126:50 am
LHR
-
DCA
2 stops13h 31m
Air Canada
Deal found 4/27$855
This Air Canada deal was found by Cheapflights users on 4/27. 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 9/1612:40 pm
DCA
-
LHR
1 stop14h 55m
Air Canada
Wed 9/238:40 am
LHR
-
DCA
2 stops18h 10m
Air Canada
Deal found 4/27$856

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 April 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$830
(Mytrip)

One-way from

$397
(Super.com)

Popular in

February

Cheapest in

November

Average price

$856
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 ($162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($49 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 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 April 28, 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

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 5/18

12:45 pm-6:30 am

1 stop12h 45m

London Heathrow

Sun 6/14

9:30 am-3:39 pm

1 stop11h 09m

$1,045

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 5/21

12:45 pm-6:30 am

1 stop12h 45m

London Heathrow

Sun 5/31

9:30 am-3:39 pm

1 stop11h 09m

$1,105

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 7/23

12:40 pm-6:30 am

1 stop12h 50m

London Heathrow

Tue 8/4

9:30 am-3:38 pm

1 stop11h 08m

$1,119

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Fri 5/8

11:00 am-9:35 am

2 stops17h 35m

London Heathrow

Mon 5/11

7:05 am-11:24 pm

2 stops21h 19m

$1,158

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 7/9

12:40 pm-6:30 am

1 stop12h 50m

London Heathrow

Tue 7/14

9:30 am-3:38 pm

1 stop11h 08m

$1,167

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 7/7

6:00 am-10:25 am

1 stop23h 25m

London Heathrow

Sun 7/19

9:30 am-10:18 am

1 stop29h 48m

$1,169

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 6/10

6:00 am-8:45 pm

1 stop9h 45m

London Heathrow

Wed 6/17

8:40 am-5:46 pm

1 stop14h 06m

$1,185
Quickest round-trip

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 5/25

6:00 am-8:40 pm

1 stop9h 40m

London Heathrow

Tue 6/9

9:30 am-3:39 pm

1 stop11h 09m

$1,234

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 5/24

11:00 am-9:35 am

2 stops17h 35m

London Heathrow

Thu 6/11

7:05 am-11:15 pm

2 stops21h 10m

$1,248

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 6/17

12:45 pm-8:35 am

1 stop14h 50m

London Heathrow

Fri 6/26

9:30 am-3:38 pm

1 stop11h 08m

$1,253

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 22 resultsSorted by cheapest first
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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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy2 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
GurufarePrice Accuracy3 starsTrust Score*3 stars
oojoPrice 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. 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?

The best time to book flights from Washington, D.C. Reagan-National Airport to London Heathrow Airport is 43 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 $644). 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 April 28, 2026.
Read reviews from past customers who have flown United Airlines,Virgin Atlantic, 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.
United Airlines
7.4
Good
9,675 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,675 reviews
United Airlines
7.4
Good
9,675 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Virgin Atlantic
7.4
Good
688 reviews
United Airlines
7.4
Good
9,675 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
JetBlue
7.2
Good
2,968 reviews
United Airlines
7.4
Good
9,675 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
American Airlines
7.1
Good
11,676 reviews
United Airlines
7.4
Good
9,675 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
British Airways
6.7
Okay
7,931 reviews
United Airlines
7.4
Good
9,675 reviews

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Food

6.6

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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 $1,045, United Airlines can have you in London Heathrow Airport from Washington, D.C. Reagan-National Airport in 12h 45m. 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, American Airlines ($497), British Airways ($529), and Delta ($558) offers the cheapest pricing from Washington, D.C. Reagan-National Airport to London Heathrow Airport. American Airlines is currently priced 42% 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 $644). 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
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
Watford
Northampton
Borehamwood
Broadway
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Slough

Browse thousands of different options on Cheapflights for your next trip

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Top 7 airlines flying from Reagan-National to Heathrow

Discover the top 7 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 April 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$497Average$745FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$529Average$839FlexibilityNo cancel feeOn-time70%
DeltaCheapest$558Average$750FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$577Average$830FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$598Average$928FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$626Average$893FlexibilityNo cancel feeOn-time72%
JetBlueCheapest$639Average$785FlexibilityNo cancel feeOn-time62%

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