Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

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 12/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from London Heathrow Airport to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
JetBlue Logo
07:25 - 22:59LHR-DCA
20h 34m1 stop
JetBlue Logo
06:00 - 20:45DCA-LHR
9h 45m1 stop
£416JetBlue
Find Deal
Wed, 10 Dec - Mon, 15 Dec
Icelandair Logo
09:20 - 16:19LHR-DCA
11h 59m1 stop
Icelandair Logo
11:55 - 06:55DCA-LHR
14h 00m1 stop
£419Icelandair
Find Deal
Mon, 2 Feb - Mon, 9 Feb
Icelandair Logo
09:20 - 21:51LHR-DCA
17h 31m1 stop
Icelandair Logo
06:15 - 20:45DCA-LHR
9h 30m1 stop
£420Icelandair
Find Deal
Mon, 2 Feb - Mon, 9 Feb
Icelandair Logo
12:20 - 22:47LHR-DCA
15h 27m1 stop
Icelandair Logo
06:15 - 20:45DCA-LHR
9h 30m1 stop
£421Icelandair
Find Deal
Mon, 2 Feb - Mon, 9 Feb
Icelandair Logo
07:25 - 22:47LHR-DCA
20h 22m1 stop
Icelandair Logo
18:55 - 06:55DCA-LHR
31h 00m1 stop
£431Icelandair
Find Deal
Wed, 7 Jan - Mon, 12 Jan
Icelandair Logo
12:20 - 22:59LHR-DCA
15h 39m1 stop
Icelandair Logo
18:59 - 06:55DCA-LHR
30h 56m1 stop
£432Icelandair
Find Deal
Wed, 10 Dec - Sun, 14 Dec
Icelandair Logo
07:25 - 22:47LHR-DCA
20h 22m1 stop
Icelandair Logo
18:55 - 06:55DCA-LHR
31h 00m1 stop
£432Icelandair
Find Deal
Wed, 7 Jan - Mon, 12 Jan
JetBlue Logo
07:25 - 22:59LHR-DCA
20h 34m1 stop
JetBlue Logo
17:59 - 06:55DCA-LHR
31h 56m1 stop
£435JetBlue
Find Deal
Wed, 10 Dec - Sun, 14 Dec
JetBlue Logo
07:25 - 22:47LHR-DCA
20h 22m1 stop
JetBlue Logo
20:55 - 06:55DCA-LHR
29h 00m1 stop
£435JetBlue
Find Deal
Wed, 7 Jan - Mon, 12 Jan
Virgin Atlantic Logo
08:40 - 22:57LHR-DCA
19h 17m2 stops
Virgin Atlantic Logo
14:01 - 07:50DCA-LHR
12h 49m1 stop
£470Virgin Atlantic
Find Deal
Mon, 15 Dec - Wed, 24 Dec

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

Our best Icelandair deals on London Heathrow Airport to Washington, D.C. Reagan-National Airport flight tickets
Icelandair
2 Feb
LHR09:20London Heathrow
11h 59m
1 stop
DCA16:19Washington, D.C. Reagan-National
9 Feb
DCA11:55Washington, D.C. Reagan-National
14h 00m
1 stop
LHR06:55London Heathrow
£419
Find similar
Icelandair
2 Feb
LHR09:20London Heathrow
17h 31m
1 stop
DCA21:51Washington, D.C. Reagan-National
9 Feb
DCA06:15Washington, D.C. Reagan-National
9h 30m
1 stop
LHR20:45London Heathrow
£420
Find similar
Icelandair
2 Feb
LHR12:20London Heathrow
15h 27m
1 stop
DCA22:47Washington, D.C. Reagan-National
9 Feb
DCA06:15Washington, D.C. Reagan-National
9h 30m
1 stop
LHR20:45London Heathrow
£421
Find similar

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
10 Dec
LHR07:25London Heathrow
20h 34m
1 stop
DCA22:59Washington, D.C. Reagan-National
15 Dec
DCA06:00Washington, D.C. Reagan-National
9h 45m
1 stop
LHR20:45London Heathrow
£416
Find similar
JetBlue
10 Dec
LHR07:25London Heathrow
20h 34m
1 stop
DCA22:59Washington, D.C. Reagan-National
14 Dec
DCA17:59Washington, D.C. Reagan-National
31h 56m
1 stop
LHR06:55London Heathrow
£435
Find similar
JetBlue
7 Jan
LHR07:25London Heathrow
20h 22m
1 stop
DCA22:47Washington, D.C. Reagan-National
12 Jan
DCA20:55Washington, D.C. Reagan-National
29h 00m
1 stop
LHR06:55London Heathrow
£435
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 4 November 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 10/12

07:25-22:59

1 stop20h 34m

Washington, D.C. Reagan-National

Mon 15/12

06:00-20:45

1 stop9h 45m

£416

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 2/2

09:20-16:19

1 stop11h 59m

Washington, D.C. Reagan-National

Mon 9/2

11:55-06:55

1 stop14h 00m

£419

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 2/2

09:20-21:51

1 stop17h 31m

Washington, D.C. Reagan-National

Mon 9/2

06:15-20:45

1 stop9h 30m

£420

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 2/2

12:20-22:47

1 stop15h 27m

Washington, D.C. Reagan-National

Mon 9/2

06:15-20:45

1 stop9h 30m

£421

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 7/1

07:25-22:47

1 stop20h 22m

Washington, D.C. Reagan-National

Mon 12/1

18:55-06:55

1 stop31h 00m

£431

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 10/12

12:20-22:59

1 stop15h 39m

Washington, D.C. Reagan-National

Sun 14/12

18:59-06:55

1 stop30h 56m

£432

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 7/1

07:25-22:47

1 stop20h 22m

Washington, D.C. Reagan-National

Mon 12/1

18:55-06:55

1 stop31h 00m

£432

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 10/12

07:25-22:59

1 stop20h 34m

Washington, D.C. Reagan-National

Sun 14/12

17:59-06:55

1 stop31h 56m

£435

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 7/1

07:25-22:47

1 stop20h 22m

Washington, D.C. Reagan-National

Mon 12/1

20:55-06:55

1 stop29h 00m

£435

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 15/12

08:40-22:57

2 stops19h 17m

Washington, D.C. Reagan-National

Wed 24/12

14:01-07:50

1 stop12h 49m

£470

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 March 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 March, then book flights to Washington, D.C. Reagan-National Airport from London Heathrow Airport during January instead. Flights to Washington, D.C. Reagan-National Airport in January, while not as cheap as those in March, still average around £499.

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 £569. 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 £632.

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 £584. Try not to purchase tickets in the evening because they tend to be around £646. 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 £622 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 £483 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

Direct flights

None
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 29m.

  • 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
IcelandairPriceFrom £372Free CancellationRating
7.1
568 reviews
Search Icelandair flights
JetBluePriceFrom £390Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
United AirlinesPriceFrom £429Free CancellationRating
7.4
8,996 reviews
Search United Airlines flights
LufthansaPriceFrom £429Free CancellationRating
6.8
7,544 reviews
Search Lufthansa flights
Virgin AtlanticPriceFrom £445Free CancellationRating
7.5
671 reviews
Search Virgin Atlantic flights
Air CanadaPriceFrom £491Free CancellationRating
7.1
10,397 reviews
Search Air Canada flights
British AirwaysPriceFrom £498Free CancellationRating
6.7
7,494 reviews
Search British Airways flights
FinnairPriceFrom £509Free CancellationRating
7.6
1,335 reviews
Search Finnair 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
Alexandria
Fairfax
Linthicum Heights
Bethesda
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.

An easier way to manage your Washington, D.C. Reagan-National Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Thu 4/12
Thu 11/12
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to Washington, D.C.