HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London

$372+ 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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LON
Feb 7 — Feb 141
Sat 2/7
Sat 2/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Reagan-National to London with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 January 8, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$547
(Mytrip)

One-way from

$372
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$674
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. 10% potential increase in price ($88 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find 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 January 8, 2026.

This Mytrip deal was found by Cheapflights users on 1/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/184:15 pmDCA - STN
3 stops25h 20mMultiple Airlines
Tue 1/276:05 pmSTN - DCA
3 stops26h 28mMultiple Airlines
Deal found 1/7$547
This Mytrip deal was found by Cheapflights users on 1/8. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/234:15 pmDCA - LGW
2 stops22h 10mMultiple Airlines
Wed 3/48:40 amLGW - DCA
2 stops18h 18mMultiple Airlines
Deal found 1/8$550
This Mytrip deal was found by Cheapflights users on 1/7. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/69:40 amDCA - STN
3 stops25h 55mMultiple Airlines
Tue 2/107:30 amSTN - DCA
3 stops20h 05mMultiple Airlines
Deal found 1/7$553
This oojo deal was found by Cheapflights users on 1/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/168:20 amDCA - LGW
1 stop18h 10mBritish Airways
Tue 2/2411:20 amLGW - DCA
1 stop17h 22mBritish Airways
Deal found 1/7$560
This oojo deal was found by Cheapflights users on 1/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:20 amDCA - LGW
1 stop18h 10mBritish Airways
Tue 3/1711:20 amLGW - DCA
1 stop16h 26mBritish Airways
Deal found 1/7$565
This oojo deal was found by Cheapflights users on 1/8. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/38:20 amDCA - LGW
1 stop18h 10mBritish Airways
Tue 3/1011:20 amLGW - DCA
1 stop16h 26mBritish Airways
Deal found 1/8$566
This SmartFares deal was found by Cheapflights users on 1/7. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/1811:05 amDCA - LHR
1 stop15h 05mAir Canada
Tue 1/271:25 pmLHR - DCA
1 stop13h 33mAir Canada
Deal found 1/7$567
This Ticket deal was found by Cheapflights users on 1/8. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/224:15 pmDCA - LHR
1 stop9h 55mAir Canada
Sun 3/112:00 pmLHR - DCA
1 stop29h 19mAir Canada
Deal found 1/8$568
This Bravofly deal was found by Cheapflights users on 1/8. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/226:00 amDCA - LHR
1 stop9h 45mJetBlue
Sun 3/112:20 pmLHR - DCA
1 stop15h 39mJetBlue
Deal found 1/8$569
This oojo deal was found by Cheapflights users on 1/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 1/2011:46 amDCA - LGW
1 stop14h 44mBritish Airways
Wed 2/411:20 amLGW - DCA
1 stop17h 05mBritish Airways
Deal found 1/7$570
This Cheapflightsfares deal was found by Cheapflights users on 1/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:00 pmDCA - LHR
1 stop11h 35mBritish Airways
Mon 3/27:40 pmLHR - DCA
2 stops25h 57mBritish Airways
Deal found 1/6$571
This Ticket deal was found by Cheapflights users on 1/8. 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 Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/185:00 pmDCA - LHR
1 stop10h 05mAir France
Tue 1/274:10 pmLHR - DCA
1 stop11h 38mAir France
Deal found 1/8$572

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 January 8, 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

Reagan-National

Fly to

London

Route

Depart

Return

Price

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Sun 1/18

4:15 pm-10:35 pm

3 stops25h 20m

London Stansted

Tue 1/27

6:05 pm-3:33 pm

3 stops26h 28m

$547

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Fri 2/6

9:40 am-4:35 pm

3 stops25h 55m

London Stansted

Tue 2/10

7:30 am-10:35 pm

3 stops20h 05m

$553

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Sun 2/22

4:15 pm-10:35 pm

2 stops25h 20m

London Stansted

Sun 3/1

6:25 am-8:55 am

3 stops31h 30m

$555

Washington, D.C.London

DCA - LTN

DCALTN

Washington, D.C. Reagan-National

Wed 1/28

4:15 pm-7:25 pm

2 stops22h 10m

London Luton

Mon 2/2

8:50 pm-3:33 pm

3 stops23h 43m

$573

Washington, D.C.London

DCA - LTN

DCALTN

Washington, D.C. Reagan-National

Wed 1/21

12:55 pm-7:25 pm

3 stops25h 30m

London Luton

Sat 1/24

8:50 pm-3:33 pm

3 stops23h 43m

$574

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Sun 1/18

11:05 am-4:10 pm

3 stops24h 05m

London Stansted

Mon 1/26

6:00 pm-3:33 pm

3 stops26h 33m

$583

Washington, D.C.London

DCA - LTN

DCALTN

Washington, D.C. Reagan-National

Mon 1/19

6:00 am-8:10 pm

3 stops33h 10m

London Luton

Mon 1/26

8:50 pm-9:58 pm

3 stops30h 08m

$587

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 1/18

5:45 pm-9:40 am

1 stop10h 55m

London Heathrow

Tue 1/27

3:35 pm-10:03 pm

1 stop11h 28m

$601

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 5/5

6:05 pm-9:15 am

1 stop10h 10m

London Heathrow

Fri 5/15

11:45 am-6:11 pm

1 stop11h 26m

$625

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 5/3

6:00 am-8:10 pm

1 stop9h 10m

London Heathrow

Thu 5/14

10:55 am-6:11 pm

1 stop12h 16m

$626

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 60 results
1
2
3
...
6

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 stars
CheapflightsfaresPrice Accuracy3 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C. Reagan-National Airport-London flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

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

Use this chart to determine the optimal time to book a round-trip flight from Reagan-National to London. Price data was last updated on January 2, 2026.

The price you pay for your flight from Washington, D.C. Reagan-National Airport to London may vary depending on when you book. For the best chance of a lower fare, look to book 16 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 June is currently the most expensive (average of $834). 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.

New York (JFK) is the most affordable 1-stop option, with an average round-trip price of $642.

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 January 8, 2026.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and JetBlue 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.
United Airlines
7.4
Good
9,142 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
9,142 reviews
United Airlines
7.4
Good
9,142 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
American Airlines
7.2
Good
11,095 reviews
United Airlines
7.4
Good
9,142 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
JetBlue
7.2
Good
2,892 reviews
United Airlines
7.4
Good
9,142 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Iberia
7.0
Good
3,079 reviews
United Airlines
7.4
Good
9,142 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
British Airways
6.7
Okay
7,659 reviews
United Airlines
7.4
Good
9,142 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Crew

8.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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 $625, Finnair can have you in London from Washington, D.C. Reagan-National Airport in 10h 10m. There are 3652 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 Virgin Atlantic - these airlines can fly you to your destination from $497 and $497, 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 June is currently the most expensive (average of $834). 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
Southend-on-Sea
Harrow
Eastleigh
Gatwick
Dartford
Dover
Winchester
Croydon
Orpington
Watford
Hayes
Borehamwood
Aylesbury
Chipping Norton
Horley
Kingston upon Thames
Eastbourne
Sutton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Reagan-National to London

See prices for flight routes from nearby airports that may be better suited for you.
Dulles Intl to Heathrow flights
Baltimore to Heathrow flights
Dulles Intl to Gatwick flights
Reagan-National to Heathrow flights
Dulles Intl to London City flights
Baltimore to Gatwick flights
Dulles Intl to Stansted flights
Reagan-National to Gatwick flights
Dulles Intl to Edinburgh flights
Dulles Intl to Luton flights
Baltimore to Luton flights
Baltimore to Edinburgh flights
Reagan-National to Edinburgh flights
Reagan-National to Luton flights
Dulles Intl to Manchester flights
Baltimore to Manchester flights
Reagan-National to Manchester flights
Baltimore to Stansted flights
Dulles Intl to Leeds flights
Dulles Intl to Southampton flights
Reagan-National to London City flights
Baltimore to London City flights
Reagan-National to Stansted flights
Baltimore to Leeds flights
Dulles Intl to Newcastle upon Tyne flights
Dulles Intl to Liverpool flights
Dulles Intl to Birmingham flights
Reagan-National to Newcastle upon Tyne flights
Baltimore to Newcastle upon Tyne flights
Baltimore to Birmingham flights
Baltimore to Liverpool flights
Reagan-National to Leeds flights
Reagan-National to Birmingham flights
Baltimore to Southampton flights
Dulles Intl to Bristol flights
Baltimore to Bristol flights
Dulles Intl to Southend flights
Reagan-National to Southampton flights
Dulles Intl to Newquay flights
Reagan-National to Liverpool flights
Reagan-National to Bristol flights
Dulles Intl to East Midlands flights
Baltimore to Newquay flights
Baltimore to East Midlands flights
Baltimore to Southend flights
Baltimore to Exeter flights
Dulles Intl to Exeter flights
Reagan-National to Newquay flights
Baltimore to Doncaster flights

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 January 8, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$821FlexibilityNo cancel feeOn-time62%
Virgin AtlanticCheapest$497Average$949FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$497Average$909FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$529Average$741FlexibilityNo cancel feeOn-time70%
DeltaCheapest$558Average$757FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$562Average$686FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$598Average$783FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$632Average$711FlexibilityNo cancel feeOn-time67%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.