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Cheap flights from Washington, D.C. to the United Kingdom from £137

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to the United Kingdom departing on 19/1. 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

Enter your travel dates to find the best prices.
Icelandair Logo
19:40 - 10:50
BWI
-
LHR
10h 10m1 stop
Icelandair Logo
12:15 - 18:40
LHR
-
BWI
11h 25m1 stop
£422Icelandair
Sun, 1 Mar - Sat, 7 Mar
Icelandair Logo
20:40 - 10:55
BWI
-
LGW
10h 15m1 stop
Icelandair Logo
11:55 - 19:40
LGW
-
BWI
11h 45m1 stop
£422Icelandair
Mon, 9 Mar - Mon, 16 Mar
Multiple Airlines Logo
20:44 - 10:00
BWI
-
LGW
32h 16m1 stop
Multiple Airlines Logo
14:00 - 23:59
LGW
-
BWI
14h 59m1 stop
£423Multiple Airlines
Wed, 1 Apr - Wed, 8 Apr
Icelandair Logo
19:40 - 10:55
BWI
-
LGW
10h 15m1 stop
Icelandair Logo
11:55 - 19:40
LGW
-
BWI
11h 45m1 stop
£424Icelandair
Sun, 22 Feb - Mon, 23 Mar
Scandinavian Airlines Logo
20:30 - 16:25
IAD
-
LHR
14h 55m2 stops
Scandinavian Airlines Logo
10:20 - 17:15
LHR
-
IAD
11h 55m1 stop
£427Scandinavian Airlines
Thu, 5 Feb - Thu, 12 Feb
Multiple Airlines Logo
20:30 - 22:35
IAD
-
STN
21h 05m2 stops
Multiple Airlines Logo
17:55 - 18:50
STN
-
IAD
29h 55m3 stops
£427Multiple Airlines
Wed, 21 Jan - Fri, 23 Jan
Scandinavian Airlines Logo
20:30 - 18:30
IAD
-
LHR
17h 00m1 stop
Scandinavian Airlines Logo
19:50 - 17:15
LHR
-
IAD
26h 25m2 stops
£428Scandinavian Airlines
Wed, 18 Feb - Tue, 24 Feb
British Airways Logo
11:46 - 07:30
DCA
-
LGW
14h 44m1 stop
British Airways Logo
11:20 - 23:25
LGW
-
DCA
17h 05m1 stop
£457British Airways
Wed, 21 Jan - Wed, 28 Jan
British Airways Logo
08:20 - 07:30
DCA
-
LGW
18h 10m1 stop
British Airways Logo
10:45 - 21:30
LGW
-
DCA
15h 45m1 stop
£469British Airways
Mon, 26 Jan - Tue, 12 May
Virgin Atlantic Logo
18:05 - 08:50
IAD
-
LCY
9h 45m1 stop
Virgin Atlantic Logo
10:00 - 16:05
LCY
-
IAD
11h 05m1 stop
£470Virgin Atlantic
Sun, 11 Jan - Tue, 20 Jan

Icelandair flights from Washington, D.C. to United Kingdom

Our best Icelandair deals on Washington, D.C. to United Kingdom flight tickets
Icelandair
1 Mar
BWI19:40Baltimore/Washington
10h 10m
1 stop
LHR10:50London Heathrow
7 Mar
LHR12:15London Heathrow
11h 25m
1 stop
BWI18:40Baltimore/Washington
£422
Find similar
Icelandair
22 Feb
BWI19:40Baltimore/Washington
10h 15m
1 stop
LGW10:55London Gatwick
23 Mar
LGW11:55London Gatwick
11h 45m
1 stop
BWI19:40Baltimore/Washington
£424
Find similar
Icelandair
4 Mar
BWI19:40Baltimore/Washington
10h 10m
1 stop
LHR10:50London Heathrow
8 Mar
LHR20:35London Heathrow
27h 05m
1 stop
BWI19:40Baltimore/Washington
£425
Find similar

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

Our best Scandinavian Airlines deals on Washington, D.C. to United Kingdom flight tickets
Scandinavian Airlines
12 Jan
IAD20:30Washington, D.C. Dulles Intl
19h 50m
2 stops
LHR21:20London Heathrow
18 Jan
LHR19:30London Heathrow
24h 50m
1 stop
IAD15:20Washington, D.C. Dulles Intl
£427
Find similar
Scandinavian Airlines
5 Feb
IAD20:30Washington, D.C. Dulles Intl
14h 55m
2 stops
LHR16:25London Heathrow
12 Feb
LHR10:20London Heathrow
11h 55m
1 stop
IAD17:15Washington, D.C. Dulles Intl
£427
Find similar
Scandinavian Airlines
18 Feb
IAD20:30Washington, D.C. Dulles Intl
17h 00m
1 stop
LHR18:30London Heathrow
24 Feb
LHR19:50London Heathrow
26h 25m
2 stops
IAD17:15Washington, D.C. Dulles Intl
£428
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. to United Kingdom 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 23 December 2025.
Use the filters below to find and compare flights from Washington, D.C. to the United Kingdom that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Sun 1/3

19:40-10:50

1 stop10h 10m

London Heathrow

Sat 7/3

12:15-18:40

1 stop11h 25m

£422

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Mon 9/3

20:40-10:55

1 stop10h 15m

London Gatwick

Mon 16/3

11:55-19:40

1 stop11h 45m

£422

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Wed 1/4

20:44-10:00

1 stop32h 16m

London Gatwick

Wed 8/4

14:00-23:59

1 stop14h 59m

£423

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Sun 22/2

19:40-10:55

1 stop10h 15m

London Gatwick

Mon 23/3

11:55-19:40

1 stop11h 45m

£424

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 5/2

20:30-16:25

2 stops14h 55m

London Heathrow

Thu 12/2

10:20-17:15

1 stop11h 55m

£427

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 21/1

20:30-22:35

2 stops21h 05m

London Stansted

Fri 23/1

17:55-18:50

3 stops29h 55m

£427

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 18/2

20:30-18:30

1 stop17h 00m

London Heathrow

Tue 24/2

19:50-17:15

2 stops26h 25m

£428

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Wed 21/1

11:46-07:30

1 stop14h 44m

London Gatwick

Wed 28/1

11:20-23:25

1 stop17h 05m

£457

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Mon 26/1

08:20-07:30

1 stop18h 10m

London Gatwick

Tue 12/5

10:45-21:30

1 stop15h 45m

£469

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 11/1

18:05-08:50

1 stop9h 45m

London City

Tue 20/1

10:00-16:05

1 stop11h 05m

£470

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 the United Kingdom from

How to get the cheapest flight ticket from Washington, D.C. to United Kingdom

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 United Kingdom?

The cheapest month to fly to United Kingdom from Washington, D.C. is in September. Flight prices, which tend to average around £464, are often lower during this time because this is during the off-season. If you are unable to visit United Kingdom during the month of September, then departing from Washington, D.C. during the month January is also very affordable. Most momondo users find prices during this month for around £488.

What is the cheapest day to depart on your flight to United Kingdom?

The cheapest day to depart from Washington, D.C. to United Kingdom is on a Wednesday. Travellers who choose to depart for United Kingdom on a Wednesday will often find tickets for as low as £527. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Washington, D.C. to United Kingdom for around £604.

What is the cheapest time of day to depart on your flight to United Kingdom?

The cheapest time of day to fly to United Kingdom is in the afternoon when flights can be purchased for as low as £559. Try not to purchase tickets in the evening because they tend to be around £573. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to United Kingdom?

You are more likely to see cheaper flights to United Kingdom from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to United Kingdom for around £561 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to United Kingdom from Washington, D.C. for as low as £524 on momondo.

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

There are 4 cabin classes available to choose from on Washington, D.C. to United Kingdom 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 Washington, D.C. to United Kingdom flights?

You could potentially save up to 44% on your flight if you consider stops on a Washington, D.C. to United Kingdom flight.

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

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

Best price found

£335

Fastest flight time

7h 05m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in United Kingdom

1,286 airports
The best one-way flight to United Kingdom from Washington, D.C. in the past 72 hours is £335. The best return flight deal from Washington, D.C. to United Kingdom found on momondo in the last 72 hours is £476.
The fastest flight from Washington, D.C. to United Kingdom takes 7h 05m
Direct flights go from Washington, D.C. to United Kingdom on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. Airline offering direct flights is British Airways..
There are 1,286 airports in United Kingdom. From Washington, D.C. there are direct flights to London Heathrow (LHR).
Search flight deals

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

    Prices for flights from Washington, D.C. to United Kingdom refresh daily.

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

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

    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 Washington, D.C. to United Kingdom.

  • What documentation or ID do you need to fly to United Kingdom?

    The travel and health documents required for your trip to United Kingdom 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 United Kingdom. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Washington, D.C. to United Kingdom?

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

Compare and see reviews for airlines that fly from Washington, D.C. to United Kingdom with momondo
Airline
Rating
Free Cancellation
Price
LufthansaPriceFrom £309Free CancellationRating
6.8
7,650 reviews
Search Lufthansa flights
IcelandairPriceFrom £356Free CancellationRating
7.0
592 reviews
Search Icelandair flights
Virgin AtlanticPriceFrom £381Free CancellationRating
7.5
677 reviews
Search Virgin Atlantic flights
British AirwaysPriceFrom £385Free CancellationRating
6.7
7,607 reviews
Search British Airways flights
Air FrancePriceFrom £396Free CancellationRating
7.4
1,513 reviews
Search Air France flights
Aer LingusPriceFrom £441Free CancellationRating
7.2
1,412 reviews
Search Aer Lingus flights
IberiaPriceFrom £457Free CancellationRating
7.0
3,057 reviews
Search Iberia flights
United AirlinesPriceFrom £501Free CancellationRating
7.4
9,111 reviews
Search United Airlines flights
American AirlinesPriceFrom £511Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
KLMPriceFrom £571Free CancellationRating
7.7
1,434 reviews
Search KLM flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to United Kingdom?

Finding the right flight to United Kingdom from Washington, D.C. is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to United Kingdom quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to United Kingdom from Washington, D.C. with this policy.

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

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

Of course. momondo tracks the price of Washington, D.C. to United Kingdom flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your United Kingdom trip

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Find better results for your trip to the United Kingdom

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