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$173+ 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 1/22. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheap 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 October 30, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$561
(Mytrip)

One-way from

$173
(Norse)

Popular in

June

Cheapest in

September

Average price

$675

Good round-trip deal

$679 or less

Good one-way deal

$421 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-London (LON) flights.
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From Washington, D.C. (WAS) to United Kingdom
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One-way flight from Washington, D.C. (WAS) to United Kingdom
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Highest demand for flights based on searches. 11% potential increase in price ($93 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to United Kingdom.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to United Kingdom.
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Find 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 October 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/28. 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 12/17:40 pmIAD - STN
2 stops20h 40mMultiple Airlines
Fri 12/56:30 amSTN - IAD
2 stops17h 00mMultiple Airlines
Deal found 10/28$561
This KAYAK deal was found by Cheapflights users on 10/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/107:40 pmIAD - LHR
1 stop10h 10mIcelandair
Mon 11/178:35 pmLHR - IAD
1 stop26h 55mIcelandair
Deal found 10/28$561
This Mytrip deal was found by Cheapflights users on 10/30. 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 12/17:40 pmIAD - LGW
2 stops15h 40mMultiple Airlines
Thu 12/48:55 pmLGW - IAD
3 stops26h 35mMultiple Airlines
Deal found 10/30$562
This CheapOair deal was found by Cheapflights users on 10/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/99:00 pmIAD - LHR
1 stop11h 25mAer Lingus
Thu 12/1812:10 pmLHR - IAD
1 stop12h 20mAer Lingus
Deal found 10/29$562
This Mytrip deal was found by Cheapflights users on 10/30. 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 11/249:00 amIAD - STN
3 stops32h 40mMultiple Airlines
Mon 12/11:50 pmSTN - IAD
2 stops31h 50mMultiple Airlines
Deal found 10/30$563
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 11/178:37 pmIAD - LGW
2 stops28h 23mMultiple Airlines
Thu 12/42:00 pmLGW - IAD
1 stop35h 24mMultiple Airlines
Deal found 10/30$563
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Wed 11/199:45 amIAD - LTN
2 stops31h 35mMultiple Airlines
Thu 11/278:50 pmLTN - IAD
2 stops24h 00mMultiple Airlines
Deal found 10/28$563
This FlightHub deal was found by Cheapflights users on 10/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:40 pmIAD - LHR
1 stop18h 50mIcelandair
Tue 12/28:35 pmLHR - IAD
1 stop26h 55mIcelandair
Deal found 10/30$563
This Mytrip deal was found by Cheapflights users on 10/30. 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 12/112:55 pmDCA - LGW
3 stops21h 30mMultiple Airlines
Wed 12/104:00 pmLGW - DCA
3 stops32h 45mMultiple Airlines
Deal found 10/30$563
This Mytrip deal was found by Cheapflights users on 10/29. 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.
Wed 11/199:00 amIAD - STN
3 stops32h 40mMultiple Airlines
Mon 12/11:50 pmSTN - IAD
2 stops31h 50mMultiple Airlines
Deal found 10/29$564
This KAYAK deal was found by Cheapflights users on 10/28. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/47:40 pmIAD - LGW
1 stop10h 15mIcelandair
Thu 11/1311:55 amLGW - IAD
1 stop11h 35mIcelandair
Deal found 10/28$565
This Mytrip deal was found by Cheapflights users on 10/28. 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 11/109:45 amIAD - LTN
2 stops29h 25mMultiple Airlines
Thu 11/208:50 pmLTN - IAD
2 stops24h 00mMultiple Airlines
Deal found 10/28$565

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 October 30, 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

Washington, D.C.

Fly to

United Kingdom

Route

Depart

Return

Price

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 11/11

9:45 am-9:50 am

3 stops19h 05m

London Stansted

Mon 11/17

9:45 pm-3:50 pm

2 stops23h 05m

$568

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 12/31

10:20 pm-10:50 am

Nonstop7h 30m

London Heathrow

Wed 1/14

8:55 am-4:35 pm

1 stop12h 40m

$577

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 11/9

10:20 pm-10:50 am

Nonstop7h 30m

London Heathrow

Wed 11/19

6:20 am-4:35 pm

1 stop15h 15m

$577

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 11/12

10:20 pm-10:50 am

Nonstop7h 30m

London Heathrow

Wed 11/19

6:20 am-4:35 pm

1 stop15h 15m

$577

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 11/9

9:45 am-12:30 pm

2 stops21h 45m

London Stansted

Tue 11/18

9:20 pm-3:50 pm

2 stops23h 30m

$588

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Sun 11/23

10:08 am-6:50 am

1 stop15h 42m

London Heathrow

Tue 12/2

9:40 am-3:59 pm

1 stop11h 19m

$591

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 11/3

2:26 pm-7:05 am

1 stop11h 39m

London Heathrow

Thu 11/27

10:00 am-9:15 pm

2 stops16h 15m

$593

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Wed 12/3

10:47 am-6:50 am

2 stops15h 03m

London Heathrow

Tue 12/9

11:30 am-11:03 pm

2 stops16h 33m

$596

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Mon 11/24

2:59 pm-6:50 am

1 stop10h 51m

London Heathrow

Wed 12/3

1:05 pm-7:46 pm

1 stop11h 41m

$599

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 11/11

2:16 pm-9:15 am

1 stop13h 59m

London Heathrow

Tue 11/18

2:45 pm-11:07 pm

1 stop13h 22m

$599

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 60 results
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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

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

Currently, March is the cheapest month in which you can book a flight from Washington, D.C. to United Kingdom (average of $31). Flying from Washington, D.C. to United Kingdom in June is currently the most expensive (average of $544). 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 October 30, 2025.

A simple way to save on the total cost of your ticket is to fly from Washington, D.C. to United Kingdom in the afternoon. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Washington, D.C. to United Kingdom?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to United Kingdom. Price data was last updated on November 10, 2024.

Travelers seeking maximum savings on their Washington, D.C. to United Kingdom flight should consider departing on Sunday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 30, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and Icelandair 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
8,998 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
8,998 reviews
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,033 reviews
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Icelandair
7.1
Good
562 reviews
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
Iberia
7.0
Good
3,001 reviews
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
British Airways
6.7
Okay
7,487 reviews
United Airlines
7.4
Good
8,998 reviews

Overall

7.4

Boarding

7.7

Entertainment

7.1

Crew

8.1

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 30m. 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 Scandinavian Airlines, which is currently one of the cheapest options available, starting at $279. JetBlue flights start at $284 while deals on Icelandair start at $323 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 American Airlines (86%), British Airways (86%) or Aer Lingus (84%) 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 $2,165 for a flight from Washington, D.C. to United Kingdom. The cheapest flight overall is $371 while the most popular route, (Washington, D.C. Dulles Intl - London Heathrow) is currently priced at $411.

  • 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, March is the cheapest month in which you can book a flight from Washington, D.C. to United Kingdom (average of $31). Flying from Washington, D.C. to United Kingdom in June is currently the most expensive (average of $544). 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

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Alternative routes for Washington, D.C. to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$871FlexibilityNo cancel feeOn-time62%
PLAYCheapest$369Average$495FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$395Average$604FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$397Average$969FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$424Average$596FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$433Average$648FlexibilityNo cancel feeOn-time76%
Virgin AtlanticCheapest$497Average$814FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$497Average$850FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$506Average$972FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$517Average$818FlexibilityNo cancel feeOn-timeN/A

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