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Cheap flights from the United Kingdom to Washington, D.C. from $277

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 1/16. 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 round-trip flight deals from the United Kingdom to Washington, D.C.

Enter your travel dates to find the best prices.
TAP AIR PORTUGAL Logo
6:00 am - 2:35 pmLHR-IAD
13h 35m1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 5:30 pmIAD-LHR
14h 00m1 stop
$530TAP AIR PORTUGAL
Find Deal
Tue, Nov 25 - Sun, Nov 30
TAP AIR PORTUGAL Logo
6:30 pm - 3:15 pmLHR-IAD
25h 45m1 stop
TAP AIR PORTUGAL Logo
10:30 pm - 5:30 pmIAD-LHR
14h 00m1 stop
$531TAP AIR PORTUGAL
Find Deal
Sun, Nov 23 - Sun, Nov 30
Multiple Airlines Logo
9:00 am - 3:35 pmLTN-IAD
11h 35m1 stop
Multiple Airlines Logo
9:00 pm - 11:45 amIAD-LTN
9h 45m1 stop
$531Multiple Airlines
Find Deal
Thu, Nov 13 - Sun, Nov 16
Icelandair Logo
9:20 am - 6:53 pmLHR-DCA
14h 33m1 stop
Icelandair Logo
1:00 pm - 6:55 amDCA-LHR
12h 55m1 stop
$556Icelandair
Find Deal
Mon, Feb 2 - Mon, Feb 9
Icelandair Logo
9:20 am - 1:09 pmLHR-DCA
32h 49m1 stop
Icelandair Logo
8:35 pm - 6:55 amDCA-LHR
29h 20m1 stop
$558Icelandair
Find Deal
Wed, Dec 10 - Sun, Dec 14
United Airlines Logo
6:50 am - 4:46 pmLHR-DCA
14h 56m2 stops
United Airlines Logo
6:50 pm - 6:30 amDCA-LHR
30h 40m1 stop
$560United Airlines
Find Deal
Sat, Nov 8 - Sat, Nov 8
United Airlines Logo
6:00 pm - 3:46 pmLHR-IAD
26h 46m1 stop
United Airlines Logo
6:20 pm - 6:40 amIAD-LHR
7h 20mnonstop
$591United Airlines
Find Deal
Sat, Nov 15 - Sun, Nov 16
Aer Lingus Logo
6:50 am - 3:35 pmLCY-IAD
13h 45m1 stop
Aer Lingus Logo
5:05 pm - 8:35 amIAD-LCY
10h 30m1 stop
$754Aer Lingus
Find Deal
Fri, Jan 16 - Wed, Jan 21
British Airways Logo
11:45 am - 10:17 amLGW-DCA
27h 32m2 stops
British Airways Logo
1:44 pm - 10:50 amDCA-LGW
16h 06m2 stops
$802British Airways
Find Deal
Thu, Nov 13 - Tue, Nov 25
British Airways Logo
11:20 am - 9:59 pmLGW-DCA
15h 39m1 stop
British Airways Logo
8:19 am - 7:30 amDCA-LGW
18h 11m1 stop
$811British Airways
Find Deal
Tue, Nov 25 - Mon, Dec 1

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
Mar 12
LHR10:20 amLondon Heathrow
11h 55m
1 stop
IAD6:15 pmWashington, D.C. Dulles Intl
Mar 16
IAD9:30 pmWashington, D.C. Dulles Intl
14h 55m
2 stops
LHR4:25 pmLondon Heathrow
$577
Find similar
Scandinavian Airlines
Jan 12
LHR10:20 amLondon Heathrow
11h 55m
1 stop
IAD5:15 pmWashington, D.C. Dulles Intl
Jan 21
IAD8:30 pmWashington, D.C. Dulles Intl
14h 55m
2 stops
LHR4:25 pmLondon Heathrow
$579
Find similar
Scandinavian Airlines
Mar 12
LHR7:05 amLondon Heathrow
15h 10m
2 stops
IAD6:15 pmWashington, D.C. Dulles Intl
Mar 16
IAD9:30 pmWashington, D.C. Dulles Intl
14h 55m
2 stops
LHR4:25 pmLondon Heathrow
$580
Find similar

TAP AIR PORTUGAL flights from United Kingdom to Washington, D.C.

Our best TAP AIR PORTUGAL deals on United Kingdom to Washington, D.C. flight tickets
TAP AIR PORTUGAL
Nov 25
LHR6:00 amLondon Heathrow
13h 35m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Nov 30
IAD10:30 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
LHR5:30 pmLondon Heathrow
$530
Find similar
TAP AIR PORTUGAL
Nov 23
LHR6:30 pmLondon Heathrow
25h 45m
1 stop
IAD3:15 pmWashington, D.C. Dulles Intl
Nov 30
IAD10:30 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
LHR5:30 pmLondon Heathrow
$531
Find similar
TAP AIR PORTUGAL
Jan 20
LGW4:35 pmLondon Gatwick
33h 25m
1 stop
IAD9:00 pmWashington, D.C. Dulles Intl
Feb 4
IAD10:30 pmWashington, D.C. Dulles Intl
11h 35m
1 stop
LGW3:05 pmLondon Gatwick
$532
Find similar

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated October 16, 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

Tue 11/25

6:00 am-2:35 pm

1 stop13h 35m

Washington, D.C. Dulles Intl

Sun 11/30

10:30 pm-5:30 pm

1 stop14h 00m

$530

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 11/23

6:30 pm-3:15 pm

1 stop25h 45m

Washington, D.C. Dulles Intl

Sun 11/30

10:30 pm-5:30 pm

1 stop14h 00m

$531

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Thu 11/13

9:00 am-3:35 pm

1 stop11h 35m

Washington, D.C. Dulles Intl

Sun 11/16

9:00 pm-11:45 am

1 stop9h 45m

$531

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Mon 2/2

9:20 am-6:53 pm

1 stop14h 33m

Washington, D.C. Reagan-National

Mon 2/9

1:00 pm-6:55 am

1 stop12h 55m

$556

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Wed 12/10

9:20 am-1:09 pm

1 stop32h 49m

Washington, D.C. Reagan-National

Sun 12/14

8:35 pm-6:55 am

1 stop29h 20m

$558

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 11/8

6:50 am-4:46 pm

2 stops14h 56m

Washington, D.C. Reagan-National

Sat 11/8

6:50 pm-6:30 am

1 stop30h 40m

$560

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 11/15

6:00 pm-3:46 pm

1 stop26h 46m

Washington, D.C. Dulles Intl

Sun 11/16

6:20 pm-6:40 am

Nonstop7h 20m

$591

LondonWashington, D.C.

LCY - IAD

LCYIAD

London City

Fri 1/16

6:50 am-3:35 pm

1 stop13h 45m

Washington, D.C. Dulles Intl

Wed 1/21

5:05 pm-8:35 am

1 stop10h 30m

$754

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Thu 11/13

11:45 am-10:17 am

2 stops27h 32m

Washington, D.C. Reagan-National

Tue 11/25

1:44 pm-10:50 am

2 stops16h 06m

$802

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Tue 11/25

11:20 am-9:59 pm

1 stop15h 39m

Washington, D.C. Reagan-National

Mon 12/1

8:19 am-7:30 am

1 stop18h 11m

$811

Flights are sorted by cheapest round-trip flights 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 month of February is, on average, the cheapest month to fly to Washington, D.C. from United Kingdom, with most prices found around $620. If you’re not able to fly to Washington, D.C. in February, then September is your next best option. Flight prices from United Kingdom to Washington, D.C. during September average around $639.

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 Thursday. momondo users have found tickets for Thursday departures for as low as $795. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from United Kingdom to Washington, D.C. for around $947.

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 $762. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $871. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

Fly from London Heathrow to Washington, D.C. Dulles Intl 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 $780 when searching weeks out. 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 $737 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 15% 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

$613

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 $613. The best round-trip flight deal from United Kingdom to Washington, D.C. found on momondo in the last 72 hours is $569.
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)
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  • 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. were last updated today.

  • 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 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 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
PLAYPriceFrom $304Free CancellationRating
7.0
103 reviews
Search PLAY flights
DeltaPriceFrom $320Free CancellationRating
7.9
7,978 reviews
Search Delta flights
Scandinavian AirlinesPriceFrom $390Free CancellationRating
7.4
1,533 reviews
Search Scandinavian Airlines flights
Austrian AirlinesPriceFrom $431Free CancellationRating
7.6
855 reviews
Search Austrian Airlines flights
TAP AIR PORTUGALPriceFrom $473Free CancellationRating
7.1
2,016 reviews
Search TAP AIR PORTUGAL flights
IcelandairPriceFrom $490Free CancellationRating
7.0
556 reviews
Search Icelandair flights
American AirlinesPriceFrom $562Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
British AirwaysPriceFrom $594Free CancellationRating
6.7
7,457 reviews
Search British Airways flights
Air CanadaPriceFrom $635Free CancellationRating
7.1
10,307 reviews
Search Air Canada flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Manassas
Reston
Fairfax
Gaithersburg
Glen Burnie
Springfield
Linthicum Heights

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?

Yes. momondo allows you to filter the results for United Kingdom to Washington, D.C. flights to just show those with flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Washington, D.C. from United Kingdom. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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 offers price alerts on flights to Washington, D.C. from United Kingdom. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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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