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$345+ Cheap flights from Reagan-National (DCA) to London (LON)

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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LON
Apr 15 — Apr 221
Wed 4/15
Wed 4/22
1 adult, Economy
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Cheap flight deals from Reagan-National to London

Cheapest flights from Reagan-National to London
Explore the most affordable flight options available from Reagan-National to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 16, 2026.

This Flysmarter deal was found by Cheapflights users on 3/12. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/196:00 am
DCA
-
LHR
2 stops22h 35m
Scandinavian Airlines
Tue 5/57:05 am
LHR
-
DCA
2 stops20h 36m
Scandinavian Airlines
Deal found 3/12$681
This FlightHub deal was found by Cheapflights users on 3/15. 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.
Sun 4/196:00 am
DCA
-
LHR
2 stops22h 35m
Scandinavian Airlines
Thu 4/237:05 am
LHR
-
DCA
2 stops20h 36m
Scandinavian Airlines
Deal found 3/15$694
This Justfly.com deal was found by Cheapflights users on 3/12. 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.
Mon 4/276:00 am
DCA
-
LHR
2 stops22h 35m
Scandinavian Airlines
Thu 4/307:05 am
LHR
-
DCA
2 stops20h 36m
Scandinavian Airlines
Deal found 3/12$695
This lastminute.com deal was found by Cheapflights users on 3/13. 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.
Mon 4/2011:00 am
DCA
-
LHR
2 stops22h 35m
Scandinavian Airlines
Thu 4/307:05 am
LHR
-
DCA
2 stops20h 36m
Scandinavian Airlines
Deal found 3/13$697
This Finnair deal was found by Cheapflights users on 3/11. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2810:10 am
DCA
-
LGW
1 stop17h 30m
Multiple Airlines
Fri 5/812:20 pm
LGW
-
DCA
1 stop14h 03m
Multiple Airlines
Deal found 3/11$705
This Mytrip deal was found by Cheapflights users on 3/12. 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 3/3012:55 pm
DCA
-
LHR
1 stop12h 35m
Air Canada
Tue 4/72:05 pm
LHR
-
DCA
1 stop12h 50m
Air Canada
Deal found 3/12$706
This FlightHub deal was found by Cheapflights users on 3/15. 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 9/1411:00 am
DCA
-
LHR
2 stops17h 35m
Scandinavian Airlines
Thu 9/2410:20 am
LHR
-
DCA
2 stops17h 52m
Scandinavian Airlines
Deal found 3/15$711
This Flysmarter deal was found by Cheapflights users on 3/14. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2811:00 am
DCA
-
LHR
2 stops17h 35m
Scandinavian Airlines
Tue 5/57:05 am
LHR
-
DCA
2 stops20h 36m
Scandinavian Airlines
Deal found 3/14$714
This Scandinavian Airlines deal was found by Cheapflights users on 3/11. 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 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
Fri 5/87:50 pm
LHR
-
DCA
2 stops32h 34m
Scandinavian Airlines
Deal found 3/11$716
This Scandinavian Airlines deal was found by Cheapflights users on 3/13. 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 3/13$717
This Mytrip deal was found by Cheapflights users on 3/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:10 pm
DCA
-
STN
3 stops19h 40m
Multiple Airlines
Tue 5/58:20 am
STN
-
DCA
3 stops18h 35m
Multiple Airlines
Deal found 3/16$718
This Gotogate deal was found by Cheapflights users on 3/14. 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.
Wed 4/1512:55 pm
DCA
-
LHR
2 stops12h 35m
Air Canada
Wed 4/226:50 am
LHR
-
DCA
2 stops13h 40m
Air Canada
Deal found 3/14$719

Find flight deals from Reagan-National to London

Discover tips and strategies to find the most affordable flight options for your journey from Reagan-National (DCA) to London (LON). 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 16, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$681
(Flysmarter)

One-way from

$345
(SmartFares)

Popular in

December

Cheapest in

September

Average price

$773
Provider with most accurate pricing for Washington, D.C. Reagan-National-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Reagan-National-London (LON) flights.
Search Deals
From Washington, D.C. Reagan-National to London (LON)
Search Deals
One-way flight from Washington, D.C. Reagan-National to London (LON)
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($39 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 London 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 16, 2026.
Use the filters below to find and compare flights from Washington, D.C. Reagan-National Airport to London 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 5/4

11:00 am-4:00 pm

2 stops24h 00m

London Heathrow

Fri 5/8

7:50 pm-11:24 pm

2 stops32h 34m

$763

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Wed 5/20

4:20 pm-5:35 pm

2 stops20h 15m

London Stansted

Sat 5/30

6:35 am-3:39 pm

2 stops14h 04m

$766

Washington, D.C.London

DCA - LTN

DCALTN

Washington, D.C. Reagan-National

Mon 3/30

12:55 pm-12:45 pm

3 stops18h 50m

London Luton

Wed 4/8

6:15 am-8:53 am

2 stops31h 38m

$771

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Mon 5/18

6:00 am-4:55 pm

3 stops29h 55m

London Stansted

Mon 5/25

9:05 am-3:39 pm

2 stops35h 34m

$774

Washington, D.C.London

DCA - LTN

DCALTN

Washington, D.C. Reagan-National

Tue 5/12

11:00 am-2:35 pm

3 stops22h 35m

London Luton

Mon 5/25

8:35 pm-3:39 pm

3 stops24h 04m

$776

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Sat 5/16

4:20 pm-12:40 am

2 stops27h 20m

London Stansted

Mon 5/25

3:15 pm-9:55 pm

2 stops35h 40m

$793

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Sun 5/17

12:45 pm-4:50 pm

3 stops23h 05m

London Stansted

Sun 5/24

6:35 am-12:01 pm

3 stops34h 26m

$797

Washington, D.C.London

DCA - LCY

DCALCY

Washington, D.C. Reagan-National

Wed 4/1

12:16 pm-7:55 am

2 stops14h 39m

London City

Wed 4/8

10:00 am-10:08 pm

2 stops17h 08m

$798

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Fri 5/1

5:31 pm-9:40 pm

1 stop23h 09m

London Heathrow

Fri 5/8

2:10 pm-10:29 pm

1 stop13h 19m

$799

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Sun 3/29

11:05 am-9:20 pm

3 stops29h 15m

London Stansted

Tue 4/7

6:30 am-8:53 am

2 stops31h 23m

$804

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 60 resultsSorted by cheapest first
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Compare providers for flights from Reagan-National to London

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 London 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
CheapfaremartPrice Accuracy-Trust Score*1 star
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. Reagan-National Airport-London 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 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 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 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 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 London

Have a flexible travel schedule? Discover the best time to fly to London 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

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

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

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

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

Montreal (YUL) – chosen by Cheapflights users on 50% of 1-stop itineraries from Washington, D.C. Reagan-National Airport to London on Cheapflights.

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

Average round-trip fare for 1-stop flights from Washington, D.C. Reagan-National Airport to London, chosen by Cheapflights users in the past 12 months, with the same layover each way.

Boston (BOS) is the most affordable 1-stop option, with an average round-trip price of $677.

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

Shortest average travel time for 1-stop one-way flights from Washington, D.C. Reagan-National Airport to London, 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. Reagan-National Airport to London?

Average layover duration for 1-stop one-way flights from Washington, D.C. Reagan-National Airport to London, 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.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. 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 London. Reviews last updated March 16, 2026.
Peruse reviews from past customers who have flown with JetBlue,American Airlines, andBritish Airways from Washington, D.C. Reagan-National Airport to London 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.
JetBlue
7.2
Good
2,906 reviews

Food

6.6

Overall

7.2

Crew

8.0

Boarding

7.4

Comfort

7.5

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

FLL - ORH

I pay extra for an even more seat row 3, but the luggage area has no more spots so i have to place my luggage in row 10. This was totally un accepatable.
JetBlue
7.2
Good
2,906 reviews
JetBlue
7.2
Good
2,906 reviews

Food

6.6

Overall

7.2

Crew

8.0

Boarding

7.4

Comfort

7.5

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

FLL - ORH

I pay extra for an even more seat row 3, but the luggage area has no more spots so i have to place my luggage in row 10. This was totally un accepatable.
American Airlines
7.1
Good
11,466 reviews
JetBlue
7.2
Good
2,906 reviews

Food

6.6

Overall

7.2

Crew

8.0

Boarding

7.4

Comfort

7.5

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

FLL - ORH

I pay extra for an even more seat row 3, but the luggage area has no more spots so i have to place my luggage in row 10. This was totally un accepatable.
British Airways
6.7
Okay
7,794 reviews
JetBlue
7.2
Good
2,906 reviews

Food

6.6

Overall

7.2

Crew

8.0

Boarding

7.4

Comfort

7.5

Entertainment

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Mar 2026

FLL - ORH

I pay extra for an even more seat row 3, but the luggage area has no more spots so i have to place my luggage in row 10. This was totally un accepatable.

Related info for your journey

Find useful and relevant information for your journey from Reagan-National to London. 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?

    For as low as $798, Scandinavian Airlines can have you in London from Washington, D.C. Reagan-National Airport in 14h 39m. There are 3672 mi between Washington, D.C. Reagan-National Airport and London. This flight may include one or multiple stops.

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

    Currently priced at $31, JetBlue will fly you from Washington, D.C. Reagan-National Airport to London and back. In addition to JetBlue, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from American Airlines and Iberia - these airlines can fly you to your destination from $497 and $527, respectively. JetBlue is 96% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the most popular routes from Washington, D.C. Reagan-National Airport to London?

    Most travelers choose Washington, D.C. Reagan-National - London Heathrow, Washington, D.C. Reagan-National - London Gatwick or Washington, D.C. Reagan-National - London Luton when deciding on the best route from Washington, D.C. Reagan-National Airport to London.

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

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

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

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

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

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

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

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
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Winchester
Orpington
Watford
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Eastbourne
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Top 8 airlines flying from Reagan-National to London

Discover the top 8 airlines that operate flights from Reagan-National to London. 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 16, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$821FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$497Average$863FlexibilityNo cancel feeOn-time71%
IberiaCheapest$527Average$695FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$529Average$740FlexibilityNo 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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