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Cheap flights from the United Kingdom to Washington, D.C. from £328

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United Kingdom to Washington, D.C. departing on 12/11. 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 the United Kingdom to Washington, D.C.

Recent return flight deals from the United Kingdom to Washington, D.C.

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
18:30 - 15:15LHR-IAD
25h 45m1 stop
TAP AIR PORTUGAL Logo
17:30 - 18:55IAD-LHR
20h 25m1 stop
£396TAP AIR PORTUGAL
Find Deal
Sun, 23 Nov - Sat, 6 Dec
TAP AIR PORTUGAL Logo
06:00 - 14:35LHR-IAD
13h 35m1 stop
TAP AIR PORTUGAL Logo
22:30 - 22:40IAD-LHR
19h 10m1 stop
£397TAP AIR PORTUGAL
Find Deal
Tue, 25 Nov - Sun, 30 Nov
TAP AIR PORTUGAL Logo
16:00 - 21:00LGW-IAD
34h 00m1 stop
TAP AIR PORTUGAL Logo
17:30 - 09:50IAD-LGW
11h 20m1 stop
£397TAP AIR PORTUGAL
Find Deal
Thu, 15 Jan - Thu, 29 Jan
TAP AIR PORTUGAL Logo
06:00 - 14:35LHR-IAD
13h 35m1 stop
TAP AIR PORTUGAL Logo
22:30 - 17:30IAD-LHR
14h 00m1 stop
£398TAP AIR PORTUGAL
Find Deal
Tue, 25 Nov - Sun, 30 Nov
Icelandair Logo
09:20 - 11:45LHR-DCA
31h 25m1 stop
Icelandair Logo
17:59 - 06:55DCA-LHR
31h 56m1 stop
£419Icelandair
Find Deal
Wed, 10 Dec - Sun, 14 Dec
Icelandair Logo
09:20 - 16:19LHR-DCA
11h 59m1 stop
Icelandair Logo
13:00 - 06:55DCA-LHR
12h 55m1 stop
£421Icelandair
Find Deal
Mon, 2 Feb - Mon, 9 Feb
Virgin Atlantic Logo
13:00 - 23:03LHR-BWI
15h 03m1 stop
Virgin Atlantic Logo
17:36 - 08:45BWI-LHR
10h 09m1 stop
£494Virgin Atlantic
Find Deal
Mon, 15 Dec - Sun, 28 Dec
Virgin Atlantic Logo
15:50 - 00:43LHR-BWI
13h 53m1 stop
Virgin Atlantic Logo
14:00 - 09:00BWI-LHR
14h 00m1 stop
£495Virgin Atlantic
Find Deal
Mon, 22 Dec - Tue, 30 Dec
Aer Lingus Logo
06:50 - 15:35LCY-IAD
13h 45m1 stop
Aer Lingus Logo
17:05 - 08:35IAD-LCY
10h 30m1 stop
£567Aer Lingus
Find Deal
Fri, 16 Jan - Wed, 21 Jan
British Airways Logo
11:20 - 23:07LGW-DCA
16h 47m1 stop
British Airways Logo
08:19 - 07:30DCA-LGW
18h 11m1 stop
£617British Airways
Find Deal
Tue, 25 Nov - Mon, 1 Dec

Scandinavian Airlines flights from United Kingdom to Washington, D.C.

Our best Scandinavian Airlines deals on United Kingdom to Washington, D.C. flight tickets
Scandinavian Airlines
12 Jan
LHR10:20London Heathrow
11h 55m
1 stop
IAD17:15Washington, D.C. Dulles Intl
21 Jan
IAD20:30Washington, D.C. Dulles Intl
14h 55m
2 stops
LHR16:25London Heathrow
£435
Find similar
Scandinavian Airlines
2 Feb
LHR06:40London Heathrow
15h 35m
1 stop
IAD17:15Washington, D.C. Dulles Intl
9 Feb
IAD20:30Washington, D.C. Dulles Intl
14h 30m
1 stop
LHR16:00London Heathrow
£437
Find similar
Scandinavian Airlines
12 Mar
LHR07:05London Heathrow
15h 10m
2 stops
IAD18:15Washington, D.C. Dulles Intl
16 Mar
IAD21:30Washington, D.C. Dulles Intl
14h 55m
2 stops
LHR16:25London Heathrow
£437
Find similar

Aer Lingus flights from United Kingdom to Washington, D.C.

Our best Aer Lingus deals on United Kingdom to Washington, D.C. flight tickets
Aer Lingus
21 Oct
LHR13:25London Heathrow
11h 05m
1 stop
IAD19:30Washington, D.C. Dulles Intl
3 Nov
IAD17:05Washington, D.C. Dulles Intl
11h 00m
1 stop
LHR09:05London Heathrow
£566
Find similar
Aer Lingus
16 Jan
LCY06:50London City
13h 45m
1 stop
IAD15:35Washington, D.C. Dulles Intl
21 Jan
IAD17:05Washington, D.C. Dulles Intl
10h 30m
1 stop
LCY08:35London City
£567
Find similar
Aer Lingus
22 Oct
LHR12:00London Heathrow
12h 30m
1 stop
IAD19:30Washington, D.C. Dulles Intl
23 Nov
IAD17:05Washington, D.C. Dulles Intl
12h 05m
1 stop
LHR10:10London Heathrow
£568
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from United Kingdom to Washington, D.C. 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 15 October 2025.
Use the filters below to find and compare flights from the United Kingdom to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 23/11

18:30-15:15

1 stop25h 45m

Washington, D.C. Dulles Intl

Sat 6/12

17:30-18:55

1 stop20h 25m

£396

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 25/11

06:00-14:35

1 stop13h 35m

Washington, D.C. Dulles Intl

Sun 30/11

22:30-22:40

1 stop19h 10m

£397

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 15/1

16:00-21:00

1 stop34h 00m

Washington, D.C. Dulles Intl

Thu 29/1

17:30-09:50

1 stop11h 20m

£397

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 25/11

06:00-14:35

1 stop13h 35m

Washington, D.C. Dulles Intl

Sun 30/11

22:30-17:30

1 stop14h 00m

£398

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 10/12

09:20-11:45

1 stop31h 25m

Washington, D.C. Reagan-National

Sun 14/12

17:59-06:55

1 stop31h 56m

£419

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

13:00-06:55

1 stop12h 55m

£421

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Mon 15/12

13:00-23:03

1 stop15h 03m

Baltimore/Washington

Sun 28/12

17:36-08:45

1 stop10h 09m

£494

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Mon 22/12

15:50-00:43

1 stop13h 53m

Baltimore/Washington

Tue 30/12

14:00-09:00

1 stop14h 00m

£495

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Fri 16/1

06:50-15:35

1 stop13h 45m

Washington, D.C. Dulles Intl

Wed 21/1

17:05-08:35

1 stop10h 30m

£567

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

08:19-07:30

1 stop18h 11m

£617

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 United Kingdom to Washington, D.C.

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.?

The cheapest month to fly to Washington, D.C. from United Kingdom is in February. Flight prices, which tend to average around £466, are often lower during this time because this is during the off-season. If you don’t want to visit Washington, D.C. in February, then you should wait until September to fly from United Kingdom, when ticket prices are also cheap, with an average price of £480.

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

On average, the least expensive day to fly to Washington, D.C. from United Kingdom is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £608. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from United Kingdom because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £685.

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

In the evening is the cheapest time of day to fly from United Kingdom to Washington, D.C. when you can find flight prices for as low as £515. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly in the afternoon, with an average ticket price of £646. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest United Kingdom to Washington, D.C. flight route?

Fly from London Heathrow to Baltimore/Washington for the best United Kingdom - Washington, D.C. flight prices

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

You are more likely to see cheaper flights to Washington, D.C. from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. for around £586 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. from United Kingdom for as low as £554 on momondo.

What cabin class options are available on United Kingdom to Washington, D.C. flights?

There are 4 cabin classes available to choose from on United Kingdom to Washington, D.C. flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United Kingdom to Washington, D.C. flights?

You could potentially save up to 37% on your flight if you consider stops on a United Kingdom to Washington, D.C. flight.

Cheap United Kingdom to Washington, D.C. flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United Kingdom to Washington, D.C.

Best price found

£461

Fastest flight time

8h 00m

Direct flights

Every day

Airports in Washington, D.C.

2 airports
The best one-way flight to Washington, D.C. from United Kingdom in the past 72 hours is £461. The best return flight deal from United Kingdom to Washington, D.C. found on momondo in the last 72 hours is £454.
The fastest flight from United Kingdom to Washington, D.C. takes 8h 00m
Direct flights go from United Kingdom to Washington, D.C. every day.
There are 2 airports near Washington, D.C.: Baltimore/Washington (BWI), Washington, D.C. Dulles Intl (IAD)
Search flight deals

  • When did momondo last update prices for flights from United Kingdom to Washington, D.C.?

    Prices for flights from United Kingdom to Washington, D.C. are refreshed on a daily basis.

  • How many operators does momondo search for flights from United Kingdom to Washington, D.C.?

  • How old do you have to be to fly from United Kingdom to Washington, D.C.?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from United Kingdom to Washington, D.C..

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

    The necessary travel and health documents for your Washington, D.C. 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 plane model from United Kingdom to Washington, D.C.?

Best airlines flying from United Kingdom to Washington, D.C.

Compare and see reviews for airlines that fly from United Kingdom to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom £190Free CancellationRating
7.9
7,977 reviews
Search Delta flights
PLAYPriceFrom £273Free CancellationRating
7.0
103 reviews
Search PLAY flights
TAP AIR PORTUGALPriceFrom £356Free CancellationRating
7.1
2,015 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom £358Free CancellationRating
7.0
556 reviews
Search Icelandair flights
FinnairPriceFrom £368Free CancellationRating
7.6
1,332 reviews
Search Finnair flights
LufthansaPriceFrom £368Free CancellationRating
6.8
7,489 reviews
Search Lufthansa flights
JetBluePriceFrom £378Free CancellationRating
7.2
2,905 reviews
Search JetBlue flights
Aer LingusPriceFrom £393Free CancellationRating
7.2
1,337 reviews
Search Aer Lingus flights
United AirlinesPriceFrom £409Free CancellationRating
7.4
8,975 reviews
Search United Airlines flights
Scandinavian AirlinesPriceFrom £430Free CancellationRating
7.4
1,532 reviews
Search Scandinavian 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
Alexandria
Fairfax
Linthicum Heights
Bethesda
Gettysburg
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 United Kingdom to Washington, D.C.?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United Kingdom to Washington, D.C.. momondo saves you time and could save you money on your trip.

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

All flight searches from United Kingdom to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for United Kingdom 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 United Kingdom to Washington, D.C. right now. Can momondo alert me if prices change?

Yes. momondo can track prices for United Kingdom to Washington, D.C. flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Washington, D.C. trip

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport