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Cheap flights from the United Kingdom to Washington, D.C. from $290

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 4/15. 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.
Austrian Airlines Logo
6:00 am - 2:40 pm
LHR
-
IAD
13h 40m
1 stop
Austrian Airlines Logo
6:20 pm - 6:40 am
IAD
-
LHR
7h 20mnonstop
$543Austrian Airlines
Sun, Feb 22 - Sat, Feb 28
TAP AIR PORTUGAL Logo
10:40 am - 9:00 pm
LGW
-
IAD
15h 20m
1 stop
TAP AIR PORTUGAL Logo
5:30 pm - 9:50 am
IAD
-
LGW
11h 20m
1 stop
$543TAP AIR PORTUGAL
Fri, Feb 27 - Tue, Mar 3
Austrian Airlines Logo
9:05 am - 2:40 pm
LHR
-
IAD
34h 35m
1 stop
Austrian Airlines Logo
10:15 pm - 10:50 am
IAD
-
LHR
7h 35mnonstop
$544Austrian Airlines
Wed, Feb 25 - Tue, Mar 3
United Airlines Logo
7:30 am - 2:35 pm
LHR
-
IAD
12h 05m
1 stop
United Airlines Logo
6:00 am - 8:35 pm
IAD
-
LHR
9h 35m
1 stop
$548United Airlines
Sat, Feb 21 - Wed, Mar 4
Lufthansa Logo
7:40 am - 3:35 pm
LHR
-
IAD
12h 55m
1 stop
Lufthansa Logo
5:40 pm - 5:05 pm
IAD
-
LHR
18h 25m
1 stop
$552Lufthansa
Tue, Feb 10 - Tue, Feb 17
Lufthansa Logo
11:30 am - 3:50 pm
EDI
-
IAD
8h 20mnonstop
Lufthansa Logo
11:00 pm - 11:15 pm
IAD
-
EDI
20h 15m
1 stop
$671Lufthansa
Fri, Mar 13 - Fri, Mar 20
Aer Lingus Logo
8:15 am - 3:35 pm
BHX
-
IAD
12h 20m
1 stop
Aer Lingus Logo
5:05 pm - 7:45 am
IAD
-
BHX
9h 40m
1 stop
$698Aer Lingus
Tue, Feb 17 - Fri, Feb 27
British Airways Logo
8:50 am - 4:35 pm
NCL
-
IAD
11h 45m
1 stop
British Airways Logo
2:03 pm - 11:00 am
IAD
-
NCL
16h 57m
2 stops
$702British Airways
Fri, Mar 13 - Fri, Mar 20
United Airlines Logo
6:05 am - 9:20 pm
BHX
-
IAD
19h 15m
2 stops
United Airlines Logo
7:00 pm - 12:35 pm
IAD
-
BHX
13h 35m
1 stop
$704United Airlines
Fri, Mar 13 - Fri, Mar 20
British Airways Logo
10:15 am - 8:20 pm
NCL
-
IAD
15h 05m
1 stop
British Airways Logo
5:40 pm - 8:45 am
IAD
-
NCL
10h 05m
1 stop
$753British Airways
Fri, May 22 - Sat, Jun 6

United Airlines flights from United Kingdom to Washington, D.C. Dulles Intl Airport

Our best United Airlines deals on United Kingdom to Washington, D.C. Dulles Intl Airport flight tickets
United Airlines
Feb 21
LHR7:30 amLondon Heathrow
12h 05m
1 stop
IAD2:35 pmWashington, D.C. Dulles Intl
Mar 4
IAD6:00 amWashington, D.C. Dulles Intl
9h 35m
1 stop
LHR8:35 pmLondon Heathrow
$548
United Airlines
May 9
LHR8:45 amLondon Heathrow
13h 00m
1 stop
IAD4:45 pmWashington, D.C. Dulles Intl
May 24
IAD6:00 amWashington, D.C. Dulles Intl
9h 40m
1 stop
LHR8:40 pmLondon Heathrow
$568
United Airlines
May 10
LHR7:25 amLondon Heathrow
12h 35m
1 stop
IAD3:00 pmWashington, D.C. Dulles Intl
May 24
IAD6:30 pmWashington, D.C. Dulles Intl
7h 25m
LHR6:55 amLondon Heathrow
$573

Lufthansa flights from United Kingdom to Washington, D.C. Dulles Intl Airport

Our best Lufthansa deals on United Kingdom to Washington, D.C. Dulles Intl Airport flight tickets
Lufthansa
Feb 10
LHR7:40 amLondon Heathrow
12h 55m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Feb 17
IAD5:40 pmWashington, D.C. Dulles Intl
18h 25m
1 stop
LHR5:05 pmLondon Heathrow
$552
Lufthansa
Feb 10
LHR7:40 amLondon Heathrow
12h 55m
1 stop
IAD3:35 pmWashington, D.C. Dulles Intl
Feb 18
IAD6:00 pmWashington, D.C. Dulles Intl
10h 45m
1 stop
LHR9:45 amLondon Heathrow
$554
Lufthansa
Feb 3
LHR4:20 pmLondon Heathrow
8h 55m
IAD8:15 pmWashington, D.C. Dulles Intl
Feb 17
IAD6:20 pmWashington, D.C. Dulles Intl
7h 20m
LHR6:40 amLondon Heathrow
$564

momondo Fare Finder

 
Customize your flight search to find flights from United Kingdom to Washington, D.C. Dulles Intl 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 832,500 searches. Data last updated January 29, 2026.
Use the filters below to find and compare flights from the United Kingdom to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 2/22

6:00 am-2:40 pm

1 stop13h 40m

Washington, D.C. Dulles Intl

Sat 2/28

6:20 pm-6:40 am

Nonstop7h 20m

$543

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Fri 2/27

10:40 am-9:00 pm

1 stop15h 20m

Washington, D.C. Dulles Intl

Tue 3/3

5:30 pm-9:50 am

1 stop11h 20m

$543

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 2/25

9:05 am-2:40 pm

1 stop34h 35m

Washington, D.C. Dulles Intl

Tue 3/3

10:15 pm-10:50 am

Nonstop7h 35m

$544

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sat 2/21

7:30 am-2:35 pm

1 stop12h 05m

Washington, D.C. Dulles Intl

Wed 3/4

6:00 am-8:35 pm

1 stop9h 35m

$548

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 2/10

7:40 am-3:35 pm

1 stop12h 55m

Washington, D.C. Dulles Intl

Tue 2/17

5:40 pm-5:05 pm

1 stop18h 25m

$552

EdinburghWashington, D.C.

EDI - IAD

EDIIAD

Edinburgh Turnhouse

Fri 3/13

11:30 am-3:50 pm

Nonstop8h 20m

Washington, D.C. Dulles Intl

Fri 3/20

11:00 pm-11:15 pm

1 stop20h 15m

$671

BirminghamWashington, D.C.

BHX - IAD

BHXIAD

Birmingham

Tue 2/17

8:15 am-3:35 pm

1 stop12h 20m

Washington, D.C. Dulles Intl

Fri 2/27

5:05 pm-7:45 am

1 stop9h 40m

$698

Newcastle upon TyneWashington, D.C.

NCL - IAD

NCLIAD

Newcastle upon Tyne

Fri 3/13

8:50 am-4:35 pm

1 stop11h 45m

Washington, D.C. Dulles Intl

Fri 3/20

2:03 pm-11:00 am

2 stops16h 57m

$702

BirminghamWashington, D.C.

BHX - IAD

BHXIAD

Birmingham

Fri 3/13

6:05 am-9:20 pm

2 stops19h 15m

Washington, D.C. Dulles Intl

Fri 3/20

7:00 pm-12:35 pm

1 stop13h 35m

$704

Newcastle upon TyneWashington, D.C.

NCL - IAD

NCLIAD

Newcastle upon Tyne

Fri 5/22

10:15 am-8:20 pm

1 stop15h 05m

Washington, D.C. Dulles Intl

Sat 6/6

5:40 pm-8:45 am

1 stop10h 05m

$753

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 Washington, D.C. from

How to get the cheapest flight ticket from United Kingdom to Washington, D.C. Dulles Intl 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. Dulles Intl Airport?

In general, September is the cheapest month to fly from United Kingdom to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $653. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of September, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $668.

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

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $744. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from United Kingdom to Washington, D.C. Dulles Intl Airport for around $904.

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

Flying to Washington, D.C. Dulles Intl Airport from United Kingdom in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $818 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $851 on average. Flights to Washington, D.C. Dulles Intl Airport from United Kingdom at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

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

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

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from United Kingdom when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $748 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from United Kingdom for as low as $716 on momondo.

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

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

You could potentially save up to 7% on your flight if you consider stops on a United Kingdom to Washington, D.C. Dulles Intl Airport flight.

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

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

Best Price Found

$673

Fastest flight time

8h 00m

Direct flights

Every day
The best one-way flight to Washington, D.C. Dulles Intl Airport from United Kingdom in the past 72 hours is $673. The best round-trip flight deal from United Kingdom to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $572.
The fastest flight from United Kingdom to Washington, D.C. Dulles Intl Airport takes 8h 00m
Direct flights go from United Kingdom to Washington, D.C. Dulles Intl Airport every day.
Search flight deals

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

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

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

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

    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. Dulles Intl Airport.

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

    The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport?

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

Compare and see reviews for airlines that fly from United Kingdom to Washington, D.C. Dulles Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Scandinavian AirlinesPriceFrom $271Free CancellationRating
7.3
1,674 reviews
Search Scandinavian Airlines flights
DeltaPriceFrom $320Free CancellationRating
7.9
8,127 reviews
Search Delta flights
Austrian AirlinesPriceFrom $431Free CancellationRating
7.5
895 reviews
Search Austrian Airlines flights
IcelandairPriceFrom $466Free CancellationRating
7.1
606 reviews
Search Icelandair flights
TAP AIR PORTUGALPriceFrom $473Free CancellationRating
7.1
2,130 reviews
Search TAP AIR PORTUGAL flights
American AirlinesPriceFrom $559Free CancellationRating
7.2
11,206 reviews
Search American Airlines flights
LufthansaPriceFrom $563Free CancellationRating
6.8
7,756 reviews
Search Lufthansa flights
United AirlinesPriceFrom $567Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
British AirwaysPriceFrom $572Free CancellationRating
6.7
7,705 reviews
Search British Airways flights
Air CanadaPriceFrom $635Free CancellationRating
7.1
10,667 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
Winchester
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Gaithersburg
Rockville
Manassas
Springfield
Sterling
Fairfax
Linthicum Heights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from United Kingdom to Washington, D.C.. Millions of users trust and use momondo every year so you are in good hands.

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

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

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?

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 United Kingdom and alert you when they change.

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