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Cheap flights from Washington, D.C. to the United Kingdom from $198

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 1/19. 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 round-trip flights

Enter your travel dates to find the best prices.
Icelandair Logo
7:40 pm - 10:50 am
BWI
-
LHR
10h 10m1 stop
Icelandair Logo
12:15 pm - 6:40 pm
LHR
-
BWI
11h 25m1 stop
$567Icelandair
Sun, Mar 1 - Sat, Mar 7
Icelandair Logo
8:40 pm - 10:55 am
BWI
-
LGW
10h 15m1 stop
Icelandair Logo
11:55 am - 7:40 pm
LGW
-
BWI
11h 45m1 stop
$567Icelandair
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
8:44 pm - 10:00 am
BWI
-
LGW
32h 16m1 stop
Multiple Airlines Logo
2:00 pm - 11:59 pm
LGW
-
BWI
14h 59m1 stop
$568Multiple Airlines
Wed, Apr 1 - Wed, Apr 8
JetBlue Logo
6:00 am - 9:40 pm
DCA
-
LHR
10h 40m1 stop
JetBlue Logo
9:20 am - 4:04 pm
LHR
-
DCA
11h 44m1 stop
$604JetBlue
Thu, Feb 5 - Thu, Feb 12
British Airways Logo
8:20 am - 7:30 am
DCA
-
LGW
18h 10m1 stop
British Airways Logo
11:20 am - 9:00 pm
LGW
-
DCA
14h 40m1 stop
$614British Airways
Wed, Jan 21 - Sat, Feb 21
JetBlue Logo
1:00 pm - 6:55 am
DCA
-
LHR
12h 55m1 stop
JetBlue Logo
9:20 am - 5:49 pm
LHR
-
DCA
13h 29m1 stop
$614JetBlue
Fri, Jan 30 - Fri, Feb 27
American Airlines Logo
6:30 am - 7:30 am
DCA
-
LGW
20h 00m1 stop
American Airlines Logo
11:20 am - 11:36 pm
LGW
-
DCA
17h 16m1 stop
$616American Airlines
Fri, Feb 6 - Wed, Feb 18
American Airlines Logo
6:30 am - 7:30 am
DCA
-
LGW
20h 00m1 stop
American Airlines Logo
11:20 am - 11:59 pm
LGW
-
DCA
17h 39m2 stops
$620American Airlines
Tue, Feb 3 - Wed, Feb 25
British Airways Logo
8:20 am - 7:30 am
DCA
-
LGW
18h 10m1 stop
British Airways Logo
10:45 am - 9:30 pm
LGW
-
DCA
15h 45m1 stop
$630British Airways
Mon, Jan 26 - Tue, May 12
Virgin Atlantic Logo
6:05 pm - 8:50 am
IAD
-
LCY
9h 45m1 stop
Virgin Atlantic Logo
10:00 am - 4:05 pm
LCY
-
IAD
11h 05m1 stop
$631Virgin Atlantic
Sun, Jan 11 - Tue, Jan 20

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

Our best Icelandair deals on Washington, D.C. to United Kingdom flight tickets
Icelandair
Mar 1
BWI7:40 pmBaltimore/Washington
10h 10m
1 stop
LHR10:50 amLondon Heathrow
Mar 7
LHR12:15 pmLondon Heathrow
11h 25m
1 stop
BWI6:40 pmBaltimore/Washington
$567
Find similar
Icelandair
Mar 2
BWI7:40 pmBaltimore/Washington
10h 15m
1 stop
LGW10:55 amLondon Gatwick
Mar 9
LGW11:55 amLondon Gatwick
11h 45m
1 stop
BWI7:40 pmBaltimore/Washington
$569
Find similar
Icelandair
May 9
BWI11:35 pmBaltimore/Washington
10h 05m
1 stop
LGW2:40 pmLondon Gatwick
May 26
LGW1:00 pmLondon Gatwick
11h 25m
1 stop
BWI7:25 pmBaltimore/Washington
$572
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
Jan 12
IAD8:30 pmWashington, D.C. Dulles Intl
19h 50m
2 stops
LHR9:20 pmLondon Heathrow
Jan 18
LHR7:30 pmLondon Heathrow
24h 50m
1 stop
IAD3:20 pmWashington, D.C. Dulles Intl
$573
Find similar
Scandinavian Airlines
Feb 5
IAD8:30 pmWashington, D.C. Dulles Intl
14h 55m
2 stops
LHR4:25 pmLondon Heathrow
Feb 12
LHR10:20 amLondon Heathrow
11h 55m
1 stop
IAD5:15 pmWashington, D.C. Dulles Intl
$574
Find similar
Scandinavian Airlines
Feb 26
IAD8:30 pmWashington, D.C. Dulles Intl
14h 55m
2 stops
LHR4:25 pmLondon Heathrow
Mar 5
LHR10:20 amLondon Heathrow
11h 55m
1 stop
IAD5:15 pmWashington, D.C. Dulles Intl
$576
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated December 23, 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 3/1

7:40 pm-10:50 am

1 stop10h 10m

London Heathrow

Sat 3/7

12:15 pm-6:40 pm

1 stop11h 25m

$567

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Mon 3/9

8:40 pm-10:55 am

1 stop10h 15m

London Gatwick

Mon 3/16

11:55 am-7:40 pm

1 stop11h 45m

$567

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Wed 4/1

8:44 pm-10:00 am

1 stop32h 16m

London Gatwick

Wed 4/8

2:00 pm-11:59 pm

1 stop14h 59m

$568

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Thu 2/5

6:00 am-9:40 pm

1 stop10h 40m

London Heathrow

Thu 2/12

9:20 am-4:04 pm

1 stop11h 44m

$604

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Wed 1/21

8:20 am-7:30 am

1 stop18h 10m

London Gatwick

Sat 2/21

11:20 am-9:00 pm

1 stop14h 40m

$614

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Fri 1/30

1:00 pm-6:55 am

1 stop12h 55m

London Heathrow

Fri 2/27

9:20 am-5:49 pm

1 stop13h 29m

$614

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Fri 2/6

6:30 am-7:30 am

1 stop20h 00m

London Gatwick

Wed 2/18

11:20 am-11:36 pm

1 stop17h 16m

$616

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Tue 2/3

6:30 am-7:30 am

1 stop20h 00m

London Gatwick

Wed 2/25

11:20 am-11:59 pm

2 stops17h 39m

$620

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Mon 1/26

8:20 am-7:30 am

1 stop18h 10m

London Gatwick

Tue 5/12

10:45 am-9:30 pm

1 stop15h 45m

$630

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 1/11

6:05 pm-8:50 am

1 stop9h 45m

London City

Tue 1/20

10:00 am-4:05 pm

1 stop11h 05m

$631

Flights are sorted by cheapest round-trip 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?

In general, September is the cheapest month to fly from Washington, D.C. to United Kingdom. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $623. If you aren’t able to travel to United Kingdom during the month of September, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $655.

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 when prices can be found for as low as $758. The most expensive day to fly to United Kingdom is Saturday, with ticket prices averaging around $891.

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

According to our data, the cheapest time of day to fly to United Kingdom is in the afternoon. momondo users have found flights departing from Washington, D.C. to United Kingdom in the afternoon for as low as $809. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to United Kingdom are more costly in the evening, with an average ticket price of $811. Departure times in the evening fall within the peak daily travel times, which is why tickets can be more expensive.

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 $754 when searching weeks out. 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 $704 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

$435

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 $435. The best round-trip flight deal from Washington, D.C. to United Kingdom found on momondo in the last 72 hours is $642.
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. Airlines offering direct flights are: Delta and 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 are refreshed on a daily basis.

  • 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 required travel and health documents for your United Kingdom trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at United Kingdom. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • 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
JetBluePriceFrom $31Free CancellationRating
7.2
2,898 reviews
Search JetBlue flights
LufthansaPriceFrom $311Free CancellationRating
6.8
7,650 reviews
Search Lufthansa flights
PLAYPriceFrom $369Free CancellationRating
7.0
103 reviews
Search PLAY flights
TAP AIR PORTUGALPriceFrom $395Free CancellationRating
7.2
2,096 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom $429Free CancellationRating
7.0
592 reviews
Search Icelandair flights
Scandinavian AirlinesPriceFrom $429Free CancellationRating
7.4
1,621 reviews
Search Scandinavian Airlines flights
Virgin AtlanticPriceFrom $497Free CancellationRating
7.5
677 reviews
Search Virgin Atlantic flights
American AirlinesPriceFrom $497Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $506Free CancellationRating
7.4
9,109 reviews
Search United Airlines flights
KLMPriceFrom $520Free 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?

It is quick and easy to find Washington, D.C. to United Kingdom flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to United Kingdom that suits you.

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

momondo does allow users to show only those flights to United Kingdom from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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?

Price alerts on flights to United Kingdom from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your United Kingdom trip

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Find better results for your trip to the United Kingdom

Popular cities in the United Kingdom

Popular flights according to clicks in the last 7 days on momondo
Flights to Londonfrom $337
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Flights to Liverpoolfrom $417
Flights to Aberdeenfrom $527
Flights to Leedsfrom $433