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Washington, D.C.

$347+ Cheap flights from the United Kingdom to Washington, D.C. (WAS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — WAS
Jun 17 — Jun 241
Wed 6/17
Wed 6/24
1 adult, Economy
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Cheap flight deals from United Kingdom to Washington, D.C.

Cheapest flights from United Kingdom to Washington, D.C.
Explore the most affordable flight options available from United Kingdom to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 18, 2026.

This Mytrip deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/159:30 pm
LGW
-
DCA
3 stops29h 25m
Multiple Airlines
Mon 6/226:55 pm
DCA
-
LGW
2 stops21h 00m
Multiple Airlines
Deal found 5/13$622
This Gotogate deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/241:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Thu 10/18:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Deal found 5/13$622
This Gotogate deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Thu 10/18:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 5/13$622
This TravelUp deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2211:20 am
LHR
-
IAD
1 stop14h 15m
TAP AIR PORTUGAL
Mon 10/266:25 pm
IAD
-
LHR
1 stop14h 15m
TAP AIR PORTUGAL
Deal found 5/15$623
This deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/188:40 am
LHR
-
DCA
1 stop14h 06m
JetBlue
Wed 7/16:15 am
DCA
-
LHR
1 stop9h 30m
JetBlue
Deal found 5/14$623
This The Travel House deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/151:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Fri 9/258:30 pm
IAD
-
LHR
1 stop18h 50m
Icelandair
Deal found 5/14$624
This The Travel House deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/153:40 pm
LGW
-
IAD
1 stop11h 35m
Icelandair
Fri 9/258:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Deal found 5/14$624
This oojo deal was found by Cheapflights users on 5/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/104:35 pm
LGW
-
IAD
1 stop33h 00m
TAP AIR PORTUGAL
Tue 11/245:25 pm
IAD
-
LGW
1 stop11h 25m
TAP AIR PORTUGAL
Deal found 5/15$625
This Kiwi.com deal was found by Cheapflights users on 5/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/52:00 pm
LGW
-
IAD
1 stop33h 32m
Multiple Airlines
Tue 7/141:36 pm
IAD
-
LGW
1 stop15h 24m
Multiple Airlines
Deal found 5/17$627
This Booking.com deal was found by Cheapflights users on 5/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/291:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Mon 10/58:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Deal found 5/13$628
This deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/185:05 pm
LHR
-
IAD
Nonstop8h 15m
British Airways
Sun 6/2810:25 pm
IAD
-
LHR
Nonstop7h 25m
British Airways
Deal found 5/14$630
This The Travel House deal was found by Cheapflights users on 5/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/11:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Mon 9/148:30 pm
IAD
-
LHR
1 stop18h 50m
Icelandair
Deal found 5/14$631

Find flight deals from United Kingdom to Washington, D.C.

Keep the following information in mind while searching for United Kingdom to Washington, D.C. flight deals. Data was last updated May 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$618
(The Travel House)

One-way from

$347
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$742

Good round-trip deal

$734 or less

Good one-way deal

$736 or less
Provider with most accurate pricing for London (LON)-Washington, D.C. (WAS) flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Washington, D.C. (WAS) flights.
Search Deals
From United Kingdom to Washington, D.C. (WAS)
Search Deals
One-way flight from United Kingdom to Washington, D.C. (WAS)
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from United Kingdom to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from United Kingdom to Washington, D.C. (WAS).
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated May 18, 2026.
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

Cheapest round-trip

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 5/28

9:25 pm-7:20 pm

1 stop26h 55m

Washington, D.C. Dulles Intl

Fri 10/2

8:30 pm-11:55 am

1 stop10h 25m

$671

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 11/13

6:40 pm-4:40 pm

1 stop27h 00m

Washington, D.C. Dulles Intl

Thu 12/3

8:30 pm-1:00 pm

1 stop11h 30m

$678

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 6/1

9:25 pm-7:20 pm

1 stop26h 55m

Washington, D.C. Dulles Intl

Sun 9/27

11:20 pm-8:20 pm

1 stop16h 00m

$678

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Tue 6/9

1:10 pm-7:25 pm

1 stop11h 15m

Washington, D.C. Dulles Intl

Tue 6/16

9:10 pm-1:25 pm

1 stop11h 15m

$692

LondonWashington, D.C.

LTN - IAD

LTNIAD

London Luton

Fri 6/5

6:20 am-3:45 pm

1 stop14h 25m

Washington, D.C. Dulles Intl

Mon 6/8

9:00 pm-12:45 pm

1 stop10h 45m

$693

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 11/4

7:35 am-4:20 pm

1 stop13h 45m

Washington, D.C. Dulles Intl

Mon 11/9

6:20 pm-6:30 am

Nonstop7h 10m

$698

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 7/16

11:30 am-7:35 pm

1 stop13h 05m

Washington, D.C. Dulles Intl

Sun 8/2

10:55 pm-11:20 am

Nonstop7h 25m

$701

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Wed 7/22

6:30 am-3:35 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

Wed 8/19

7:20 pm-12:05 pm

1 stop11h 45m

$702

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

Wed 9/2

2:00 pm-5:15 pm

Nonstop8h 15m

Baltimore/Washington

Sun 9/6

8:19 pm-6:55 am

1 stop29h 36m

$704

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

Sat 8/1

6:15 am-10:59 pm

2 stops21h 44m

Washington, D.C. Reagan-National

Thu 8/13

11:50 am-6:45 am

1 stop13h 55m

$704

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/13

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from United Kingdom to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from United Kingdom with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United Kingdom to Washington, D.C.

How far ahead should I book a flight from United Kingdom to Washington, D.C.?

Booking 84 days in advance of your planned departure date is, on average, the best time to get cheap flights from United Kingdom to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from United Kingdom to Washington, D.C.?

Currently, September is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. (average of $666). Flying from United Kingdom to Washington, D.C. in August is currently the most expensive (average of $875). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GB to WAS?

Find hourly flight availability from United Kingdom to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 18, 2026.

When flying from United Kingdom to Washington, D.C., the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from United Kingdom to Washington, D.C.

Explore weekly flight availability from United Kingdom to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated May 18, 2026.

The most flights from GB0 to WAS are scheduled on a Monday (28 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (22 on average).

How often are flights from the United Kingdom to Washington, D.C. delayed?

About 18% of weekly flights between United Kingdom and Washington, D.C. have experienced delays in the past year, with the average delay time being 127 minutes.

What is the most punctual flight time for the United Kingdom to Washington, D.C. flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United Kingdom to Washington, D.C. flights?

Over the last year, Virgin Atlantic have had the lowest number of delays on this route, with just 11% of flights being delayed.

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated May 18, 2026.
Read through reviews of airlines operating flights from the United Kingdom to Washington, D.C., such as United Airlines,Virgin Atlantic, andAer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,737 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,737 reviews
United Airlines
7.4
Good
9,737 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Virgin Atlantic
7.4
Good
688 reviews
United Airlines
7.4
Good
9,737 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Aer Lingus
7.3
Good
1,563 reviews
United Airlines
7.4
Good
9,737 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
American Airlines
7.1
Good
11,650 reviews
United Airlines
7.4
Good
9,737 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
British Airways
6.7
Okay
7,986 reviews
United Airlines
7.4
Good
9,737 reviews

Overall

7.4

Comfort

7.3

Food

6.6

Entertainment

7.1

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from United Kingdom to Washington, D.C.?

    There are many flights that can get you from United Kingdom to Washington, D.C. in 14h 05m. Fly via Icelandair, SWISS, or Delta to get the fastest option. The distance between United Kingdom and Washington, D.C. is about 3664 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from United Kingdom to Washington, D.C. one-way?

    The cheapest airlines for a one-way flight from United Kingdom to Washington, D.C. are JetBlue ($411), Aer Lingus ($459), and TAP AIR PORTUGAL ($475).

  • What are the most popular routes from United Kingdom to Washington, D.C.?

    Most travelers choose London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Gatwick - Washington, D.C. Dulles Intl when deciding on the best route from United Kingdom to Washington, D.C..

  • What are the most reliable airlines from United Kingdom to Washington, D.C.?

    No one likes to see their flight delayed. When booking a flight from United Kingdom to Washington, D.C. consider choosing Air Canada (88%), Austrian Airlines (88%) or Copa Airlines (88%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from United Kingdom to Washington, D.C.?

    On average you can expect to pay $1,523 for a flight from United Kingdom to Washington, D.C.. The cheapest flight overall is $658 while the most popular route, (London Heathrow - Washington, D.C. Dulles Intl) is currently priced at $565.

  • Can I find deals for flights from United Kingdom to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on United Kingdom to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from United Kingdom to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from United Kingdom to Washington, D.C..

  • Can I find deals for business class flights from United Kingdom to Washington, D.C.?

    Yes. Cheapflights offers flight deals from United Kingdom to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from United Kingdom to Washington, D.C.?

    Currently, September is the cheapest month in which you can book a flight from United Kingdom to Washington, D.C. (average of $666). Flying from United Kingdom to Washington, D.C. in August is currently the most expensive (average of $875). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Tysons
Owings Mills
Springfield
Arlington
Herndon
Rockville
Hyattsville
Manassas
Fredericksburg
Silver Spring
Hanover
Laurel
Woodbridge
Waldorf
Largo
Clinton
Hunt Valley
Cordova
Reston

Browse thousands of different options on Cheapflights for your next trip

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Top 10 airlines flying from United Kingdom to Washington, D.C.

Discover the top 10 airlines that operate flights from United Kingdom to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated May 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$320Average$907FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$466Average$702FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$473Average$730FlexibilityNo cancel feeOn-timeN/A
Austrian AirlinesCheapest$534Average$743FlexibilityNo cancel feeOn-time78%
LufthansaCheapest$536Average$772FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$559Average$796FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$567Average$912FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$571Average$988FlexibilityNo cancel feeOn-time70%
Scandinavian AirlinesCheapest$593Average$932FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$635Average$663FlexibilityNo cancel feeOn-time67%

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