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Cheap flights from London to Washington, D.C. from £369

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London to Washington, D.C. departing on 22/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

Enter your travel dates to find the best prices.
JetBlue Logo
09:20 - 16:04
LHR
-
DCA
11h 44m
1 stop
JetBlue Logo
06:00 - 09:30
DCA
-
LHR
22h 30m
1 stop
£413JetBlue
Tue, 17 Feb - Sun, 22 Feb
JetBlue Logo
09:20 - 17:49
LHR
-
DCA
13h 29m
1 stop
JetBlue Logo
06:00 - 09:30
DCA
-
LHR
22h 30m
1 stop
£413JetBlue
Wed, 25 Feb - Wed, 4 Mar
JetBlue Logo
09:20 - 16:04
LHR
-
DCA
11h 44m
1 stop
JetBlue Logo
06:00 - 22:00
DCA
-
LHR
11h 00m
1 stop
£414JetBlue
Mon, 23 Feb - Sat, 28 Feb
United Airlines Logo
13:25 - 21:56
LHR
-
DCA
12h 31m
1 stop
United Airlines Logo
16:15 - 07:10
DCA
-
LHR
10h 55m
1 stop
£424United Airlines
Thu, 12 Mar - Sun, 15 Mar
Air Canada Logo
09:00 - 21:56
LHR
-
DCA
16h 56m
2 stops
Air Canada Logo
12:55 - 09:20
DCA
-
LHR
16h 25m
1 stop
£428Air Canada
Thu, 12 Mar - Sun, 15 Mar
Air Canada Logo
09:00 - 21:56
LHR
-
DCA
16h 56m
2 stops
Air Canada Logo
12:55 - 07:10
DCA
-
LHR
14h 15m
2 stops
£430Air Canada
Thu, 12 Mar - Mon, 16 Mar
British Airways Logo
07:50 - 21:30
LCY
-
DCA
18h 40m
2 stops
British Airways Logo
09:59 - 08:50
DCA
-
LCY
17h 51m
2 stops
£450British Airways
Wed, 18 Feb - Mon, 23 Feb
British Airways Logo
19:15 - 18:33
LCY
-
DCA
28h 18m
2 stops
British Airways Logo
14:16 - 14:35
DCA
-
LCY
19h 19m
2 stops
£455British Airways
Tue, 24 Feb - Mon, 2 Mar
American Airlines Logo
11:20 - 00:36
LGW
-
DCA
18h 16m
2 stops
American Airlines Logo
13:44 - 09:00
DCA
-
LGW
14h 16m
2 stops
£473American Airlines
Wed, 25 Feb - Wed, 4 Mar
American Airlines Logo
11:20 - 23:42
LGW
-
DCA
17h 22m
1 stop
American Airlines Logo
13:44 - 09:00
DCA
-
LGW
14h 16m
2 stops
£476American Airlines
Wed, 25 Feb - Wed, 4 Mar

Air Canada flights from London to Washington, D.C. Reagan-National Airport

Our best Air Canada deals on London to Washington, D.C. Reagan-National Airport flight tickets
Air Canada
13 Mar
LHR09:00London Heathrow
17h 35m
2 stops
DCA22:35Washington, D.C. Reagan-National
20 Mar
DCA12:55Washington, D.C. Reagan-National
16h 25m
1 stop
LHR09:20London Heathrow
£398
Air Canada
5 Feb
LHR13:25London Heathrow
13h 31m
1 stop
DCA21:56Washington, D.C. Reagan-National
11 Feb
DCA16:15Washington, D.C. Reagan-National
9h 55m
1 stop
LHR07:10London Heathrow
£400
Air Canada
3 Mar
LHR09:00London Heathrow
15h 45m
2 stops
DCA19:45Washington, D.C. Reagan-National
11 Mar
DCA11:05Washington, D.C. Reagan-National
16h 05m
1 stop
LHR07:10London Heathrow
£400

British Airways flights from London to Washington, D.C. Reagan-National Airport

Our best British Airways deals on London to Washington, D.C. Reagan-National Airport flight tickets
British Airways
13 Apr
LHR12:30London Heathrow
11h 28m
1 stop
DCA18:58Washington, D.C. Reagan-National
21 Apr
DCA17:30Washington, D.C. Reagan-National
9h 45m
1 stop
LHR08:15London Heathrow
£418
British Airways
3 Feb
LHR10:15London Heathrow
11h 35m
1 stop
DCA16:50Washington, D.C. Reagan-National
17 Feb
DCA16:34Washington, D.C. Reagan-National
10h 16m
1 stop
LHR07:50London Heathrow
£423
British Airways
20 Feb
LHR10:15London Heathrow
11h 10m
1 stop
DCA16:25Washington, D.C. Reagan-National
27 Feb
DCA16:34Washington, D.C. Reagan-National
9h 01m
1 stop
LHR06:35London Heathrow
£427

momondo Fare Finder

 
Customise your flight search to find flights from London to Washington, D.C. Reagan-National Airport 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, momondo users made 279,928 searches. Data last updated 29 January 2026.
Use the filters below to find and compare flights from London to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 17/2

09:20-16:04

1 stop11h 44m

Washington, D.C. Reagan-National

Sun 22/2

06:00-09:30

1 stop22h 30m

£413

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 25/2

09:20-17:49

1 stop13h 29m

Washington, D.C. Reagan-National

Wed 4/3

06:00-09:30

1 stop22h 30m

£413

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 23/2

09:20-16:04

1 stop11h 44m

Washington, D.C. Reagan-National

Sat 28/2

06:00-22:00

1 stop11h 00m

£414

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 12/3

13:25-21:56

1 stop12h 31m

Washington, D.C. Reagan-National

Sun 15/3

16:15-07:10

1 stop10h 55m

£424

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 12/3

09:00-21:56

2 stops16h 56m

Washington, D.C. Reagan-National

Sun 15/3

12:55-09:20

1 stop16h 25m

£428

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 12/3

09:00-21:56

2 stops16h 56m

Washington, D.C. Reagan-National

Mon 16/3

12:55-07:10

2 stops14h 15m

£430

LondonWashington, D.C.

LCY - DCA

LCYDCA

London City

Wed 18/2

07:50-21:30

2 stops18h 40m

Washington, D.C. Reagan-National

Mon 23/2

09:59-08:50

2 stops17h 51m

£450

LondonWashington, D.C.

LCY - DCA

LCYDCA

London City

Tue 24/2

19:15-18:33

2 stops28h 18m

Washington, D.C. Reagan-National

Mon 2/3

14:16-14:35

2 stops19h 19m

£455

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Wed 25/2

11:20-00:36

2 stops18h 16m

Washington, D.C. Reagan-National

Wed 4/3

13:44-09:00

2 stops14h 16m

£473

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Wed 25/2

11:20-23:42

1 stop17h 22m

Washington, D.C. Reagan-National

Wed 4/3

13:44-09:00

2 stops14h 16m

£476

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London to Washington, D.C. Reagan-National Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between London and Washington, D.C. Reagan-National Airport?

What is the cheapest month to fly to Washington, D.C. Reagan-National Airport?

The month of February is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from London, with most prices found around £405. If you aren’t able to travel during the month of February, then book flights to Washington, D.C. Reagan-National Airport from London during November instead. Flights to Washington, D.C. Reagan-National Airport in November, while not as cheap as those in February, still average around £452.

How far in advance should I book a flight to Washington, D.C. Reagan-National Airport?

You are more likely to see cheaper flights to Washington, D.C. Reagan-National Airport from London when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Reagan-National Airport for around £555 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Reagan-National Airport from London for as low as £459 on momondo.

When to book flights from London to Washington, D.C. Reagan-National Airport

Are you open to changing your travel dates? Check out the ideal times to fly from London to Washington, D.C. Reagan-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap London to Washington, D.C. Reagan-National Airport (LON to DCA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London to Washington, D.C. Reagan-National Airport

Fastest flight time

11h 09m

Direct flights

None
The fastest flight from London to Washington, D.C. Reagan-National Airport takes 11h 09m
There are no direct flights from London to Washington, D.C. Reagan-National Airport. There are no popular flight routes from London to Washington, D.C. Reagan-National Airport.
Search flight deals

  • How far is London to Washington, D.C. Reagan-National by plane?

    Washington, D.C. Reagan-National is 3664.8 mi away from London. 11h 09m is a normal flight duration for this route.

  • When did momondo last update prices for flights from London to Washington, D.C. Reagan-National Airport?

    Prices for flights from London to Washington, D.C. Reagan-National Airport were last updated today.

  • How many operators does momondo search for flights from London to Washington, D.C. Reagan-National Airport?

  • How old do you have to be to fly from London to Washington, D.C. Reagan-National Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London to Washington, D.C. Reagan-National Airport.

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The travel and health documents required for your trip to Washington, D.C. Reagan-National Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Washington, D.C. Reagan-National Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

Best airlines flying from London to Washington, D.C. Reagan-National Airport

Compare and see reviews for airlines that fly from London to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom £408Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
LufthansaPriceFrom £408Free CancellationRating
6.8
7,756 reviews
Search Lufthansa flights
British AirwaysPriceFrom £417Free CancellationRating
6.7
7,705 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £423Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
JetBluePriceFrom £424Free CancellationRating
7.2
2,891 reviews
Search JetBlue flights
FinnairPriceFrom £463Free CancellationRating
7.6
1,356 reviews
Search Finnair flights
Air CanadaPriceFrom £467Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights
American AirlinesPriceFrom £511Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights

Travelling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Laurel
College Park
Fairfax
Arlington
Linthicum Heights
Alexandria
Glen Burnie
Lutherville Timonium
Ellicott City
Cambridge
Lexington Park
Westminster
Woodbridge
Bethesda
Rockville
Silver Spring
Owings Mills
National Harbor

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from London.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

Flights from London to Washington, D.C. with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from London to Washington, D.C.?

Once all potential London to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Washington, D.C., momondo offers a useful price alert feature which will track prices for flights to Washington, D.C. from London and alert you when they change.

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