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Cheap flights from London Heathrow Airport to Washington, D.C. from £356

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 Heathrow Airport to Washington, D.C. departing on 19/4. 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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Find the cheapest flights from London Heathrow Airport to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
Delta Logo
13:25 - 23:41
LHR
-
DCA
15h 16m
1 stop
Delta Logo
11:48 - 06:45
DCA
-
LHR
13h 57m
1 stop
£396Delta
Thu, 23 Apr - Thu, 30 Apr
Multiple Airlines Logo
09:00 - 21:56
LHR
-
DCA
16h 56m
2 stops
Multiple Airlines Logo
12:55 - 09:20
DCA
-
LHR
16h 25m
1 stop
£398Multiple Airlines
Wed, 11 Mar - Wed, 18 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
£399Air Canada
Wed, 11 Mar - Wed, 18 Mar
Air Canada Logo
09:00 - 21:56
LHR
-
DCA
16h 56m
2 stops
Air Canada Logo
11:05 - 07:10
DCA
-
LHR
16h 05m
1 stop
£400Air Canada
Thu, 12 Mar - Mon, 16 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
£401Air Canada
Wed, 11 Mar - Mon, 23 Mar
Air Canada Logo
09:00 - 19:59
LHR
-
DCA
15h 59m
2 stops
Air Canada Logo
12:55 - 08:35
DCA
-
LHR
14h 40m
1 stop
£402Air Canada
Wed, 25 Feb - Wed, 29 Apr
Air Canada Logo
09:00 - 22:35
LHR
-
DCA
17h 35m
2 stops
Air Canada Logo
12:55 - 07:10
DCA
-
LHR
14h 15m
2 stops
£405Air Canada
Mon, 9 Mar - Mon, 16 Mar
Air Canada Logo
06:50 - 15:31
LHR
-
DCA
13h 41m
2 stops
Air Canada Logo
11:05 - 07:10
DCA
-
LHR
15h 05m
1 stop
£405Air Canada
Thu, 26 Feb - Thu, 5 Mar
Air Canada Logo
06:50 - 15:31
LHR
-
DCA
13h 41m
2 stops
Air Canada Logo
16:10 - 07:10
DCA
-
LHR
11h 00m
1 stop
£406Air Canada
Wed, 4 Mar - Wed, 11 Mar
Air Canada Logo
06:50 - 15:31
LHR
-
DCA
13h 41m
2 stops
Air Canada Logo
11:05 - 07:10
DCA
-
LHR
15h 05m
1 stop
£407Air Canada
Fri, 27 Feb - Tue, 3 Mar

United Airlines flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport

Our best United Airlines deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
United Airlines
1 Mar
LHR15:10London Heathrow
11h 49m
1 stop
DCA21:59Washington, D.C. Reagan-National
7 Mar
DCA06:00Washington, D.C. Reagan-National
9h 35m
1 stop
LHR20:35London Heathrow
£427
United Airlines
21 Feb
LHR15:00London Heathrow
11h 56m
1 stop
DCA21:56Washington, D.C. Reagan-National
28 Feb
DCA06:00Washington, D.C. Reagan-National
10h 20m
1 stop
LHR21:20London Heathrow
£429
United Airlines
7 Mar
LHR07:40London Heathrow
14h 19m
1 stop
DCA16:59Washington, D.C. Reagan-National
14 Mar
DCA07:00Washington, D.C. Reagan-National
9h 35m
1 stop
LHR20:35London Heathrow
£433

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

Our best Air Canada deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
Air Canada
11 Mar
LHR09:00London Heathrow
16h 56m
2 stops
DCA21:56Washington, D.C. Reagan-National
18 Mar
DCA12:55Washington, D.C. Reagan-National
16h 25m
1 stop
LHR09:20London Heathrow
£399
Air Canada
12 Mar
LHR09:00London Heathrow
16h 56m
2 stops
DCA21:56Washington, D.C. Reagan-National
16 Mar
DCA11:05Washington, D.C. Reagan-National
16h 05m
1 stop
LHR07:10London Heathrow
£400
Air Canada
11 Mar
LHR09:00London Heathrow
16h 56m
2 stops
DCA21:56Washington, D.C. Reagan-National
23 Mar
DCA12:55Washington, D.C. Reagan-National
14h 15m
2 stops
LHR07:10London Heathrow
£401

momondo Fare Finder

 
Customise your flight search to find flights from London Heathrow Airport 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 10 February 2026.
Use the filters below to find and compare flights from London Heathrow Airport 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

Thu 23/4

13:25-23:41

1 stop15h 16m

Washington, D.C. Reagan-National

Thu 30/4

11:48-06:45

1 stop13h 57m

£396

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 11/3

09:00-21:56

2 stops16h 56m

Washington, D.C. Reagan-National

Wed 18/3

12:55-09:20

1 stop16h 25m

£398

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 11/3

09:00-21:56

2 stops16h 56m

Washington, D.C. Reagan-National

Wed 18/3

12:55-09:20

1 stop16h 25m

£399

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

11:05-07:10

1 stop16h 05m

£400

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 11/3

09:00-21:56

2 stops16h 56m

Washington, D.C. Reagan-National

Mon 23/3

12:55-07:10

2 stops14h 15m

£401

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 25/2

09:00-19:59

2 stops15h 59m

Washington, D.C. Reagan-National

Wed 29/4

12:55-08:35

1 stop14h 40m

£402

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 9/3

09:00-22:35

2 stops17h 35m

Washington, D.C. Reagan-National

Mon 16/3

12:55-07:10

2 stops14h 15m

£405

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Thu 26/2

06:50-15:31

2 stops13h 41m

Washington, D.C. Reagan-National

Thu 5/3

11:05-07:10

1 stop15h 05m

£405

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 4/3

06:50-15:31

2 stops13h 41m

Washington, D.C. Reagan-National

Wed 11/3

16:10-07:10

1 stop11h 00m

£406

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 27/2

06:50-15:31

2 stops13h 41m

Washington, D.C. Reagan-National

Tue 3/3

11:05-07:10

1 stop15h 05m

£407

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 Heathrow Airport 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 cheapest month to fly to Washington, D.C. Reagan-National Airport?

The month of January is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from London Heathrow Airport, with most prices found around £460. If you aren’t able to travel during the month of January, then book flights to Washington, D.C. Reagan-National Airport from London Heathrow Airport during November instead. Flights to Washington, D.C. Reagan-National Airport in November, while not as cheap as those in January, still average around £471.

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 Heathrow Airport 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 £562 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 Heathrow Airport for as low as £465 on momondo.

How have London Heathrow Airport to Washington, D.C. Reagan-National Airport flight prices changed over time?

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

Are you open to changing your travel dates? Check out the ideal times to fly from London Heathrow Airport 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 Heathrow Airport to Washington, D.C. Reagan-National Airport (LHR to DCA) flight deals and tips

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

Fastest flight time

11h 00m

Direct flights

None
The fastest flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport takes 11h 00m
There are no direct flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport. There are no popular flight routes from London Heathrow Airport to Washington, D.C. Reagan-National Airport.
Search flight deals

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

    A flight from London Heathrow to Washington, D.C. Reagan-National will travel around 3651.9 mi. By plane, this route typically takes 11h 00m.

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

    Prices for flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from London Heathrow Airport to Washington, D.C. Reagan-National Airport.

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

    The necessary travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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

Compare and see reviews for airlines that fly from London Heathrow Airport to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom £325Free CancellationRating
7.4
9,269 reviews
Search United Airlines flights
LufthansaPriceFrom £413Free CancellationRating
6.8
7,777 reviews
Search Lufthansa flights
British AirwaysPriceFrom £422Free CancellationRating
6.7
7,724 reviews
Search British Airways flights
Virgin AtlanticPriceFrom £429Free CancellationRating
7.5
678 reviews
Search Virgin Atlantic flights
JetBluePriceFrom £430Free CancellationRating
7.2
2,893 reviews
Search JetBlue flights
FinnairPriceFrom £469Free CancellationRating
7.6
1,360 reviews
Search Finnair flights
Air CanadaPriceFrom £473Free CancellationRating
7.1
10,701 reviews
Search Air Canada flights
American AirlinesPriceFrom £517Free CancellationRating
7.2
11,261 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
Landover
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?

Yes. All flights to Washington, D.C. from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for London to Washington, D.C. flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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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