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$255+ Cheap flights from Washington, D.C. (WAS) to the United Kingdom

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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
Jun 6 — Jun 131
Sat 6/6
Sat 6/13
1 adult, Economy
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Cheap flight deals from Washington, D.C. to United Kingdom

Cheapest flights from Washington, D.C. to United Kingdom
Explore the most affordable flight options available from Washington, D.C. to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 7, 2026.

This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Wed 7/293:21 pm
BWI
-
LGW
1 stop13h 39m
Multiple Airlines
Sun 9/132:00 pm
LGW
-
BWI
1 stop24h 28m
Multiple Airlines
Deal found 5/4$709
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Tue 7/283:21 pm
BWI
-
LGW
1 stop13h 39m
Multiple Airlines
Mon 9/72:00 pm
LGW
-
BWI
1 stop24h 06m
Multiple Airlines
Deal found 5/4$713
This Gotogate deal was found by Cheapflights users on 5/7. 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.
Wed 9/238:30 pm
BWI
-
LHR
1 stop10h 25m
Icelandair
Sat 10/31:05 pm
LHR
-
BWI
1 stop14h 10m
Icelandair
Deal found 5/7$719
This Gotogate deal was found by Cheapflights users on 5/3. 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.
Tue 10/68:30 pm
BWI
-
LHR
1 stop18h 50m
Icelandair
Tue 10/139:25 pm
LHR
-
BWI
1 stop27h 00m
Icelandair
Deal found 5/3$722
This Kiwi.com deal was found by Cheapflights users on 5/4. 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.
Mon 7/273:21 pm
BWI
-
LGW
1 stop13h 39m
Multiple Airlines
Wed 9/92:00 pm
LGW
-
BWI
1 stop24h 28m
Multiple Airlines
Deal found 5/4$722
This Gotogate deal was found by Cheapflights users on 5/5. 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 11/127:40 pm
BWI
-
LHR
1 stop10h 10m
Icelandair
Thu 11/198:35 pm
LHR
-
BWI
1 stop27h 05m
Icelandair
Deal found 5/5$723
This Gotogate deal was found by Cheapflights users on 5/3. 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.
Tue 10/68:30 pm
BWI
-
LGW
1 stop13h 10m
Icelandair
Tue 10/133:40 pm
LGW
-
BWI
1 stop11h 35m
Icelandair
Deal found 5/3$723
This Gotogate deal was found by Cheapflights users on 5/2. 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.
Sat 11/77:40 pm
BWI
-
LGW
1 stop10h 15m
Icelandair
Sat 11/1411:55 am
LGW
-
BWI
1 stop11h 45m
Icelandair
Deal found 5/2$724
This Gotogate deal was found by Cheapflights users on 5/5. 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.
Fri 10/238:30 pm
BWI
-
LHR
1 stop10h 25m
Icelandair
Wed 10/288:35 pm
LHR
-
BWI
1 stop27h 05m
Icelandair
Deal found 5/5$725
This Gotogate deal was found by Cheapflights users on 5/5. 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.
Fri 10/238:30 pm
BWI
-
LGW
1 stop13h 10m
Icelandair
Wed 10/2811:55 am
LGW
-
BWI
1 stop11h 45m
Icelandair
Deal found 5/5$725
This Gotogate deal was found by Cheapflights users on 5/3. 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 10/111:20 pm
BWI
-
LHR
1 stop16h 00m
Icelandair
Tue 10/61:05 pm
LHR
-
BWI
1 stop11h 20m
Icelandair
Deal found 5/3$726
This Gotogate deal was found by Cheapflights users on 5/6. 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.
Sun 10/48:30 pm
BWI
-
LHR
1 stop10h 25m
Icelandair
Sun 10/111:05 pm
LHR
-
BWI
1 stop11h 20m
Icelandair
Deal found 5/6$727

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

Keep the following information in mind while searching for Washington, D.C. to United Kingdom flight deals. Data was last updated May 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$709
(Kiwi.com)

One-way from

$255
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$830

Good round-trip deal

$953 or less

Good one-way deal

$494 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London (LON) flights.
Search Deals
From Washington, D.C. (WAS) to United Kingdom
Search Deals
One-way flight from Washington, D.C. (WAS) to United Kingdom
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($135 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 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 Washington, D.C. (WAS) to United Kingdom.
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to United Kingdom.
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated May 7, 2026.
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

Cheapest round-trip

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Wed 6/3

5:15 pm-12:35 pm

2 stops14h 20m

London Luton

Tue 6/9

9:40 am-8:29 pm

2 stops15h 49m

$854

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Mon 5/25

8:30 pm-11:45 am

1 stop10h 15m

London Gatwick

Thu 6/11

3:40 pm-10:15 pm

1 stop11h 35m

$915

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Mon 5/18

8:30 pm-11:45 am

1 stop10h 15m

London Gatwick

Tue 5/26

1:00 pm-10:15 pm

1 stop14h 15m

$922
Quickest round-trip

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 8/25

6:30 pm-6:55 am

Nonstop7h 25m

London Heathrow

Sun 8/30

12:15 pm-3:30 pm

Nonstop8h 15m

$932

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 8/10

5:34 pm-9:05 am

1 stop10h 31m

London Heathrow

Sun 8/23

5:05 pm-8:20 pm

Nonstop8h 15m

$941

Washington, D.C.London

IAD - LCY

IADLCY

Washington, D.C. Dulles Intl

Sun 7/19

5:40 pm-5:20 pm

1 stop18h 40m

London City

Mon 8/24

7:45 am-11:21 pm

2 stops20h 36m

$942

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sat 8/1

7:58 pm-9:40 pm

1 stop20h 42m

London Heathrow

Wed 8/12

3:20 pm-11:33 pm

1 stop13h 13m

$947

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 5/18

9:50 pm-10:40 am

Nonstop7h 50m

London Heathrow

Thu 5/28

6:50 am-1:30 pm

1 stop11h 40m

$953

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 8/13

10:55 pm-11:20 am

Nonstop7h 25m

London Heathrow

Sun 8/23

6:15 am-4:05 pm

1 stop14h 50m

$961

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Thu 10/8

6:35 pm-6:55 am

Nonstop7h 20m

London Heathrow

Sat 10/17

7:30 am-3:10 pm

1 stop12h 40m

$964

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/2

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

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Washington, D.C. 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 Washington, D.C. to the United Kingdom

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

To ensure you get the cheapest price possible for a flight from Washington, D.C. to United Kingdom, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to United Kingdom (average of $648). Flying from Washington, D.C. to United Kingdom in June is currently the most expensive (average of $1,069). 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 WAS to GB?

Find hourly flight availability from Washington, D.C. to United Kingdom. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 7, 2026.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to United Kingdom in the morning. If you’re flexible enough to do this you can expect to save up to 50% on your trip compared to booking a flight at noon.

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

Explore weekly flight availability from Washington, D.C. to United Kingdom. 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 7, 2026.

The most flights from WAS to GB0 are scheduled on a Monday (30 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (28 on average).

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

About 19% of weekly flights between Washington, D.C. and United Kingdom have experienced delays in the past year, with the average delay time being 170 minutes.

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

Historically, flights departing at night 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?

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

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

Over the last year, Virgin Atlantic have had the lowest number of delays on this route, with just 15% of flights being delayed.

Reviews of airlines servicing United Kingdom

Get insights into the airlines that provide service to United Kingdom. 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 United Kingdom. Reviews last updated May 7, 2026.
Peruse reviews from past customers who have flown with United Airlines,Aer Lingus, andAmerican Airlines from Washington, D.C. to the United Kingdom to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,692 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,692 reviews
United Airlines
7.4
Good
9,692 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Aer Lingus
7.3
Good
1,550 reviews
United Airlines
7.4
Good
9,692 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
American Airlines
7.1
Good
11,668 reviews
United Airlines
7.4
Good
9,692 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Icelandair
7.0
Good
653 reviews
United Airlines
7.4
Good
9,692 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
British Airways
6.7
Okay
7,951 reviews
United Airlines
7.4
Good
9,692 reviews

Crew

8.1

Food

6.6

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to United Kingdom. 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 Washington, D.C. to United Kingdom?

    Departing from Washington, D.C. to United Kingdom will take you 7h 25m. There are 3664 mi between Washington, D.C. and United Kingdom. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at $92. Icelandair flights start at $202 while deals on TAP AIR PORTUGAL start at $218 one-way.

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

    When deciding which route to take from Washington, D.C. to United Kingdom consider Washington, D.C. Dulles Intl - London Heathrow, Baltimore/Washington - London Heathrow or Washington, D.C. Reagan-National - London Heathrow as they are the most popular.

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

    Consider United Airlines (85%), Aer Lingus (83%) or Finnair (83%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to United Kingdom.

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

    On average you can expect to pay $2,325 for a flight from Washington, D.C. to United Kingdom. The cheapest flight overall is $373 while the most popular route, (Washington, D.C. Dulles Intl - London Heathrow) is currently priced at $627.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Washington, D.C. to United Kingdom 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 Washington, D.C. to United Kingdom?

    Currently, February is the cheapest month in which you can book a flight from Washington, D.C. to United Kingdom (average of $648). Flying from Washington, D.C. to United Kingdom in June is currently the most expensive (average of $1,069). 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

Browse thousands of different options on Cheapflights for your next trip

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

Discover the top 10 airlines that operate flights from Washington, D.C. to United Kingdom. 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 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$309Average$504FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$398Average$663FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$462Average$979FlexibilityNo cancel feeOn-time69%
Virgin AtlanticCheapest$471Average$855FlexibilityNo cancel feeOn-time72%
Scandinavian AirlinesCheapest$492Average$710FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$497Average$784FlexibilityNo cancel feeOn-time71%
DeltaCheapest$519Average$894FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$520Average$841FlexibilityNo cancel feeOn-time70%
IberiaCheapest$561Average$821FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$561Average$856FlexibilityNo cancel feeOn-timeN/A

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