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Cheap flights from London Heathrow Airport to Washington, D.C. from £376

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 5/12. 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

JetBlue Logo
08:15 - 22:56LHR-DCA
19h 41m1 stop
JetBlue Logo
17:42 - 20:45DCA-LHR
22h 03m1 stop
£417JetBlue
Find Deal
Wed, 17 Sep - Mon, 22 Sep
JetBlue Logo
11:55 - 19:22LHR-DCA
12h 27m1 stop
JetBlue Logo
06:25 - 20:45DCA-LHR
9h 20m1 stop
£422JetBlue
Find Deal
Tue, 30 Sep - Mon, 6 Oct
Icelandair Logo
08:15 - 19:20LHR-DCA
16h 05m1 stop
Icelandair Logo
15:15 - 06:30DCA-LHR
10h 15m1 stop
£422Icelandair
Find Deal
Mon, 15 Sep - Mon, 22 Sep
JetBlue Logo
08:25 - 16:24LHR-DCA
12h 59m1 stop
JetBlue Logo
11:15 - 06:30DCA-LHR
14h 15m1 stop
£429JetBlue
Find Deal
Wed, 8 Oct - Wed, 22 Oct
Icelandair Logo
08:25 - 16:06LHR-DCA
12h 41m1 stop
Icelandair Logo
06:19 - 20:45DCA-LHR
9h 26m1 stop
£433Icelandair
Find Deal
Mon, 15 Sep - Mon, 22 Sep
Icelandair Logo
08:25 - 17:00LHR-DCA
13h 35m1 stop
Icelandair Logo
06:00 - 20:45DCA-LHR
10h 45m1 stop
£440Icelandair
Find Deal
Wed, 10 Sep - Wed, 29 Oct
Air Canada Logo
06:50 - 15:51LHR-DCA
14h 01m2 stops
Air Canada Logo
09:40 - 06:30DCA-LHR
15h 50m1 stop
£444Air Canada
Find Deal
Fri, 12 Sep - Tue, 16 Sep
Air Canada Logo
06:50 - 15:51LHR-DCA
14h 01m2 stops
Air Canada Logo
16:35 - 09:35DCA-LHR
12h 00m1 stop
£461Air Canada
Find Deal
Tue, 16 Sep - Tue, 23 Sep
United Airlines Logo
08:30 - 17:01LHR-DCA
13h 31m1 stop
United Airlines Logo
15:30 - 08:20DCA-LHR
11h 50m1 stop
£481United Airlines
Find Deal
Sun, 31 Aug - Tue, 9 Sep
Finnair Logo
08:55 - 17:30LHR-DCA
13h 35m1 stop
Finnair Logo
13:33 - 07:50DCA-LHR
13h 17m1 stop
£483Finnair
Find Deal
Sun, 21 Sep - Thu, 2 Oct

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

Our best JetBlue deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
JetBlue
17 Sept
LHR08:15London Heathrow
19h 41m
1 stop
DCA22:56Washington, D.C. Reagan-National
22 Sept
DCA17:42Washington, D.C. Reagan-National
22h 03m
1 stop
LHR20:45London Heathrow
£417
Find similar
JetBlue
30 Sept
LHR11:55London Heathrow
12h 27m
1 stop
DCA19:22Washington, D.C. Reagan-National
6 Oct
DCA06:25Washington, D.C. Reagan-National
9h 20m
1 stop
LHR20:45London Heathrow
£422
Find similar
JetBlue
8 Oct
LHR08:25London Heathrow
12h 59m
1 stop
DCA16:24Washington, D.C. Reagan-National
22 Oct
DCA11:15Washington, D.C. Reagan-National
14h 15m
1 stop
LHR06:30London Heathrow
£429
Find similar

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
31 Aug
LHR08:30London Heathrow
13h 31m
1 stop
DCA17:01Washington, D.C. Reagan-National
9 Sept
DCA15:30Washington, D.C. Reagan-National
11h 50m
1 stop
LHR08:20London Heathrow
£481
Find similar
United Airlines
8 Aug
LHR08:30London Heathrow
14h 32m
1 stop
DCA18:02Washington, D.C. Reagan-National
15 Aug
DCA15:05Washington, D.C. Reagan-National
10h 40m
1 stop
LHR06:45London Heathrow
£560
Find similar
United Airlines
8 Aug
LHR12:00London Heathrow
12h 09m
1 stop
DCA19:09Washington, D.C. Reagan-National
13 Aug
DCA16:14Washington, D.C. Reagan-National
10h 01m
1 stop
LHR07:15London Heathrow
£561
Find similar

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 1 August 2025.
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

Wed 17/9

08:15-22:56

1 stop19h 41m

Washington, D.C. Reagan-National

Mon 22/9

17:42-20:45

1 stop22h 03m

£417

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 30/9

11:55-19:22

1 stop12h 27m

Washington, D.C. Reagan-National

Mon 6/10

06:25-20:45

1 stop9h 20m

£422

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 15/9

08:15-19:20

1 stop16h 05m

Washington, D.C. Reagan-National

Mon 22/9

15:15-06:30

1 stop10h 15m

£422

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 8/10

08:25-16:24

1 stop12h 59m

Washington, D.C. Reagan-National

Wed 22/10

11:15-06:30

1 stop14h 15m

£429

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 15/9

08:25-16:06

1 stop12h 41m

Washington, D.C. Reagan-National

Mon 22/9

06:19-20:45

1 stop9h 26m

£433

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 10/9

08:25-17:00

1 stop13h 35m

Washington, D.C. Reagan-National

Wed 29/10

06:00-20:45

1 stop10h 45m

£440

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Fri 12/9

06:50-15:51

2 stops14h 01m

Washington, D.C. Reagan-National

Tue 16/9

09:40-06:30

1 stop15h 50m

£444

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 16/9

06:50-15:51

2 stops14h 01m

Washington, D.C. Reagan-National

Tue 23/9

16:35-09:35

1 stop12h 00m

£461

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 31/8

08:30-17:01

1 stop13h 31m

Washington, D.C. Reagan-National

Tue 9/9

15:30-08:20

1 stop11h 50m

£481

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sun 21/9

08:55-17:30

1 stop13h 35m

Washington, D.C. Reagan-National

Thu 2/10

13:33-07:50

1 stop13h 17m

£483

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

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 £495. 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 March instead. Flights to Washington, D.C. Reagan-National Airport in March, while not as cheap as those in January, still average around £502.

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from London Heathrow Airport to Washington, D.C. Reagan-National Airport is on a Thursday. Travellers who choose to depart for Washington, D.C. Reagan-National Airport on a Thursday will often find tickets for as low as £565. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Washington, D.C. Reagan-National Airport on Saturday is £628.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest London Heathrow Airport to Washington, D.C. Reagan-National Airport flights are usually those with departure times in the morning. Our users have found flights to Washington, D.C. Reagan-National Airport in the morning for as low as £579. Try not to purchase tickets in the evening because they tend to be around £641. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 £634 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 £479 on momondo.

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

Best price found

£376

Fastest flight time

11h 07m

Direct flights

None
The best one-way flight to Washington, D.C. Reagan-National Airport from London Heathrow Airport in the past 72 hours is £376. The best return flight deal from London Heathrow Airport to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is £417.
The fastest flight from London Heathrow Airport to Washington, D.C. Reagan-National Airport takes 11h 07m
There are no direct flights from London Heathrow Airport to Washington, D.C. Reagan-National Airport. Popular non-direct route for this connection is London Heathrow Airport - 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 07m.

  • 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
JetBluePriceFrom £380Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
IcelandairPriceFrom £383Free CancellationRating
7.0
520 reviews
Search Icelandair flights
LufthansaPriceFrom £486Free CancellationRating
6.8
7,275 reviews
Search Lufthansa flights
British AirwaysPriceFrom £495Free CancellationRating
6.6
7,222 reviews
Search British Airways flights
United AirlinesPriceFrom £498Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
FinnairPriceFrom £506Free CancellationRating
7.6
1,316 reviews
Search Finnair flights
Virgin AtlanticPriceFrom £510Free CancellationRating
7.4
655 reviews
Search Virgin Atlantic flights
Air CanadaPriceFrom £527Free CancellationRating
7.1
9,851 reviews
Search Air Canada 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
Essex
Alexandria
Fairfax
Manassas
Bethesda
Oxon Hill
College Park
Linthicum Heights
Gettysburg
Hanover
Cambridge
Ellicott City
Westminster
Arlington
Woodbridge
Owings Mills
Silver Spring
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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