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Cheap flights from Washington, D.C. Reagan-National Airport to London from £205

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 15/7. Fares are subject to change and may not be available on all flights or dates of travel.
DCA — LON
11 May — 18 May1
1 adult

Cheapflights Tip: The best prices from Washington, D.C. Reagan-National to London are usually found in February or March, booked 79 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

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 6 May 2025.

Round-trip from

£472

One-way from

£205

Popular in

June

Cheapest in

February

Average price

£549
JetBlue
  • JetBlue
  • 30/9-5/10
  • 2 total stops
  • 21h 04m total
  • Washington, D.C. to London
JetBlue
  • JetBlue
  • 15/7
  • 1 total stop
  • 13h 35m total
  • Washington, D.C. to London
Highest demand for flights based on searches. 11% potential increase in price (£57 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in May 2025

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 6 May 2025.

Tue 30/906:30DCA - LHR
1 stop9h 15mJetBlue
Sun 5/1011:55LHR - DCA
1 stop11h 49mJetBlue
Deal found 5/5£472
Tue 3/606:59DCA - LGW
2 stops32h 16mMultiple Airlines
Mon 9/621:30LGW - DCA
2 stops23h 19mMultiple Airlines
Deal found 5/5£473
Mon 1/918:45DCA - LGW
1 stop9h 50mJetBlue
Fri 12/912:10LGW - DCA
1 stop13h 41mJetBlue
Deal found 5/5£475
Mon 4/820:40DCA - LHR
1 stop10h 10mMultiple Airlines
Mon 25/819:30LHR - DCA
2 stops25h 18mMultiple Airlines
Deal found 5/5£476
Wed 10/916:35DCA - LHR
2 stops11h 00mAir Canada
Wed 17/909:30LHR - DCA
1 stop17h 21mAir Canada
Deal found 5/5£477
Mon 4/806:00DCA - LHR
1 stop9h 40mUnited Airlines
Fri 22/809:30LHR - DCA
1 stop11h 18mUnited Airlines
Deal found 5/5£480
Tue 5/814:54DCA - LGW
1 stop12h 16mAmerican Airlines
Tue 19/815:05LGW - DCA
1 stop13h 12mAmerican Airlines
Deal found 5/5£480
Wed 23/714:35DCA - LHR
1 stop11h 15mBritish Airways
Thu 28/819:40LHR - DCA
1 stop17h 09mBritish Airways
Deal found 5/5£483
Wed 6/814:59DCA - LGW
1 stop12h 11mBritish Airways
Tue 26/815:05LGW - DCA
1 stop13h 12mBritish Airways
Deal found 5/5£483
Mon 8/918:55DCA - LHR
1 stop10h 35mDelta
Fri 26/915:45LHR - DCA
1 stop11h 34mDelta
Deal found 5/5£487
Thu 22/506:59DCA - LTN
2 stops28h 36mMultiple Airlines
Tue 27/521:50LTN - DCA
2 stops29h 38mMultiple Airlines
Deal found 5/5£490
Tue 20/511:00DCA - STN
3 stops31h 30mMultiple Airlines
Tue 3/611:25STN - DCA
3 stops33h 24mMultiple Airlines
Deal found 6/5£496

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 6 May 2025.
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 - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 30/9

11:30-06:30

1 stop14h 00m

London Heathrow

Mon 6/10

08:25-16:13

1 stop12h 48m

£472

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Tue 26/8

16:30-11:50

2 stops14h 20m

London Heathrow

Tue 2/9

06:50-15:51

2 stops14h 01m

£473

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Tue 3/6

06:59-20:15

2 stops32h 16m

London Gatwick

Mon 9/6

21:30-15:49

2 stops23h 19m

£473

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Mon 1/9

18:45-09:35

1 stop9h 50m

London Gatwick

Fri 12/9

12:10-20:51

1 stop13h 41m

£475

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 27/8

20:40-11:50

1 stop10h 10m

London Heathrow

Mon 1/9

19:30-15:51

2 stops25h 21m

£476

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 4/8

06:00-20:40

1 stop9h 40m

London Heathrow

Fri 22/8

09:30-15:48

1 stop11h 18m

£480

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Tue 5/8

14:54-08:10

1 stop12h 16m

London Gatwick

Tue 19/8

15:05-23:17

1 stop13h 12m

£480

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Wed 23/7

14:35-06:50

1 stop11h 15m

London Heathrow

Thu 28/8

19:40-07:49

1 stop17h 09m

£483

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Wed 6/8

14:59-08:10

1 stop12h 11m

London Gatwick

Tue 26/8

15:05-23:17

1 stop13h 12m

£483

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 8/9

06:05-20:00

1 stop8h 55m

London Heathrow

Fri 19/9

15:45-22:19

1 stop11h 34m

£487

Flights are sorted by cheapest return flights first.

Deals found on 5/5

Showing 1-10 of 56 results
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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 return 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 return flight from Reagan-National to London. Price data was last updated on 2 May 2025.

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 79 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, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London (average of £112). Flying from Washington, D.C. Reagan-National Airport to London in August is currently the most expensive (average of £164). 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 LON?

Find hourly flight availability from Reagan-National to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 6 May 2025.

When flying from Washington, D.C. Reagan-National Airport to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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 6 May 2025.
To help decide which airline to fly from Washington, D.C. to London, see what other customers have to say about Delta, KLM and LOT. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
8.0
Very Good

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Overall

8.0

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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

    Flying on JetBlue is currently your cheapest option to London, with prices starting at £472. Additional return tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at £473 and £480, respectively. JetBlue is priced at 17% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Washington, D.C. Reagan-National Airport to London one-way?

    For one-way options, check prices for JetBlue. According to our data, you can fly for as low as £205. Users have also found prices from £282 and £293 on Air Canada and United Airlines, respectively.

  • What are the most popular routes 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 holiday 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, January is the cheapest month in which you can book a flight from Washington, D.C. Reagan-National Airport to London (average of £112). Flying from Washington, D.C. Reagan-National Airport to London in August is currently the most expensive (average of £164). 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

Travelling to a place near Washington, D.C. Reagan-National Airport?

Book flights to Washington, D.C. Reagan-National Airport if you plan to visit one of these locations
Deal
Hounslow
Milton Keynes
Luton
Gatwick
Slough
Croydon
Eastbourne
Wembley
Crawley
Hayes
Southend-on-Sea
Ipswich
Watford
Ilford
Folkestone
Maidstone
Winchester
Dartford
Guildford

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