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Cheap flights from London to Washington, D.C. from £377

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 14/1. 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

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JetBlue Logo
07:25 - 22:58LHR-DCA
20h 33m1 stop
JetBlue Logo
15:40 - 06:55DCA-LHR
10h 15m1 stop
£417JetBlue
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Wed, 3 Dec - Tue, 9 Dec
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
09:20 - 16:19LHR-DCA
11h 59m1 stop
Icelandair Logo
10:00 - 06:55DCA-LHR
15h 55m1 stop
£422Icelandair
Find Deal
Mon, 2 Feb - Mon, 9 Feb
JetBlue Logo
08:05 - 14:36LHR-DCA
11h 31m1 stop
JetBlue Logo
06:15 - 20:45DCA-LHR
9h 30m1 stop
£427JetBlue
Find Deal
Mon, 17 Nov - Mon, 1 Dec
JetBlue Logo
09:20 - 16:19LHR-DCA
11h 59m1 stop
JetBlue Logo
20:55 - 06:55DCA-LHR
29h 00m1 stop
£428JetBlue
Find Deal
Wed, 7 Jan - Mon, 12 Jan
JetBlue Logo
07:25 - 22:58LHR-DCA
20h 33m1 stop
JetBlue Logo
18:59 - 06:55DCA-LHR
30h 56m1 stop
£431JetBlue
Find Deal
Tue, 2 Dec - Sun, 7 Dec
British Airways Logo
11:20 - 20:59LGW-DCA
14h 39m1 stop
British Airways Logo
11:30 - 07:30DCA-LGW
16h 00m1 stop
£514British Airways
Find Deal
Thu, 26 Feb - Tue, 17 Mar
British Airways Logo
11:20 - 23:07LGW-DCA
16h 47m1 stop
British Airways Logo
11:45 - 07:30DCA-LGW
14h 45m1 stop
£568British Airways
Find Deal
Tue, 25 Nov - Mon, 1 Dec
Virgin Atlantic Logo
08:40 - 23:08LCY-DCA
19h 28m2 stops
Virgin Atlantic Logo
09:55 - 08:10DCA-LCY
17h 15m2 stops
£597Virgin Atlantic
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Thu, 18 Dec - Mon, 5 Jan
Finnair Logo
11:20 - 23:07LGW-DCA
16h 47m1 stop
Finnair Logo
10:15 - 09:00DCA-LGW
17h 45m1 stop
£663Finnair
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Tue, 2 Dec - Sun, 7 Dec

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

Our best Icelandair deals on London to Washington, D.C. Reagan-National Airport flight tickets
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
LHR09:20London Heathrow
11h 59m
1 stop
DCA16:19Washington, D.C. Reagan-National
9 Feb
DCA10:00Washington, D.C. Reagan-National
15h 55m
1 stop
LHR06:55London Heathrow
£422
Find similar
Icelandair
10 Dec
LHR09:20London Heathrow
11h 40m
1 stop
DCA16:00Washington, D.C. Reagan-National
14 Dec
DCA20:49Washington, D.C. Reagan-National
29h 06m
1 stop
LHR06:55London Heathrow
£433
Find similar

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
26 Feb
LGW11:20London Gatwick
14h 39m
1 stop
DCA20:59Washington, D.C. Reagan-National
17 Mar
DCA11:30Washington, D.C. Reagan-National
16h 00m
1 stop
LGW07:30London Gatwick
£514
Find similar
British Airways
1 Nov
LHR13:30London Heathrow
11h 29m
1 stop
DCA20:59Washington, D.C. Reagan-National
7 Nov
DCA17:45Washington, D.C. Reagan-National
10h 55m
1 stop
LHR09:40London Heathrow
£518
Find similar
British Airways
1 Nov
LHR10:15London Heathrow
11h 45m
1 stop
DCA18:00Washington, D.C. Reagan-National
8 Nov
DCA17:24Washington, D.C. Reagan-National
10h 51m
1 stop
LHR09:15London Heathrow
£537
Find similar

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 31 October 2025.
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

Wed 3/12

07:25-22:58

1 stop20h 33m

Washington, D.C. Reagan-National

Tue 9/12

15:40-06:55

1 stop10h 15m

£417

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

09:20-16:19

1 stop11h 59m

Washington, D.C. Reagan-National

Mon 9/2

10:00-06:55

1 stop15h 55m

£422

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 17/11

08:05-14:36

1 stop11h 31m

Washington, D.C. Reagan-National

Mon 1/12

06:15-20:45

1 stop9h 30m

£426

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 7/1

09:20-16:19

1 stop11h 59m

Washington, D.C. Reagan-National

Mon 12/1

20:55-06:55

1 stop29h 00m

£428

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Tue 2/12

07:25-22:58

1 stop20h 33m

Washington, D.C. Reagan-National

Sun 7/12

18:59-06:55

1 stop30h 56m

£431

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 26/2

11:20-20:59

1 stop14h 39m

Washington, D.C. Reagan-National

Tue 17/3

11:30-07:30

1 stop16h 00m

£514

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Tue 25/11

11:20-23:07

1 stop16h 47m

Washington, D.C. Reagan-National

Mon 1/12

11:45-07:30

1 stop14h 45m

£568

LondonWashington, D.C.

LCY - DCA

LCYDCA

London City

Thu 18/12

08:40-23:08

2 stops19h 28m

Washington, D.C. Reagan-National

Mon 5/1

09:55-08:10

2 stops17h 15m

£597

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Tue 2/12

11:20-23:07

1 stop16h 47m

Washington, D.C. Reagan-National

Sun 7/12

10:15-09:00

1 stop17h 45m

£663

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 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 £418. 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 September instead. Flights to Washington, D.C. Reagan-National Airport in September, while not as cheap as those in February, still average around £496.

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

The cheapest day to depart from London 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 £568. 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 £630.

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 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 £582. Try not to purchase tickets in the evening because they tend to be around £644. 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 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 £621 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 £481 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

Direct flights

None
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.
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  • 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 25m 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
IcelandairPriceFrom £370Free CancellationRating
7.1
562 reviews
Search Icelandair flights
JetBluePriceFrom £389Free CancellationRating
7.2
2,906 reviews
Search JetBlue flights
United AirlinesPriceFrom £427Free CancellationRating
7.4
8,995 reviews
Search United Airlines flights
LufthansaPriceFrom £428Free CancellationRating
6.8
7,543 reviews
Search Lufthansa flights
Virgin AtlanticPriceFrom £444Free CancellationRating
7.5
671 reviews
Search Virgin Atlantic flights
Air CanadaPriceFrom £489Free CancellationRating
7.1
10,385 reviews
Search Air Canada flights
British AirwaysPriceFrom £497Free CancellationRating
6.7
7,489 reviews
Search British Airways flights
FinnairPriceFrom £507Free CancellationRating
7.6
1,333 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?

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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