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$199+ 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
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 December 15, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 12/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3110:55 pmIAD - LHR
1 stop17h 05mLufthansa
Wed 1/147:40 amLHR - IAD
1 stop12h 55mLufthansa
Deal found 12/13$585
This Cheapflightsfares deal was found by Cheapflights users on 12/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:25 pmIAD - LHR
1 stop17h 55mSWISS
Wed 1/148:05 pmLHR - IAD
1 stop24h 25mSWISS
Deal found 12/15$587
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/305:31 pmIAD - LHR
1 stop12h 44mMultiple Airlines
Fri 1/97:00 amLHR - IAD
1 stop12h 55mMultiple Airlines
Deal found 12/14$604
This United Airlines deal was found by Cheapflights users on 12/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:20 pmIAD - LHR
Nonstop7h 20mUnited Airlines
Wed 1/146:50 amLHR - IAD
1 stop12h 45mUnited Airlines
Deal found 12/15$606
This Air Canada deal was found by Cheapflights users on 12/15. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/3010:08 pmIAD - LHR
1 stop30h 12mAir Canada
Tue 1/136:50 amLHR - IAD
2 stops19h 04mAir Canada
Deal found 12/15$609
This Air Canada deal was found by Cheapflights users on 12/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:45 amIAD - LHR
1 stop16h 25mMultiple Airlines
Wed 1/146:50 amLHR - IAD
2 stops14h 34mMultiple Airlines
Deal found 12/13$611
This Air Canada deal was found by Cheapflights users on 12/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/314:10 pmDCA - LHR
1 stop10h 00mAir Canada
Wed 1/146:50 amLHR - DCA
2 stops13h 41mAir Canada
Deal found 12/13$612
This Cheapflightsfares deal was found by Cheapflights users on 12/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:45 pmIAD - LHR
Nonstop7h 15mBritish Airways
Wed 1/1412:10 pmLHR - IAD
Nonstop8h 25mBritish Airways
Deal found 12/15$613
This Gotogate deal was found by Cheapflights users on 12/13. 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.
Tue 12/309:45 amIAD - LHR
2 stops29h 50mMultiple Airlines
Mon 4/208:05 pmLHR - IAD
1 stop25h 15mMultiple Airlines
Deal found 12/13$617
This Air Canada deal was found by Cheapflights users on 12/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:45 amIAD - LHR
2 stops15h 45mAir Canada
Wed 1/146:50 amLHR - IAD
2 stops14h 34mAir Canada
Deal found 12/13$618
This American Airlines deal was found by Cheapflights users on 12/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:54 pmBWI - LHR
1 stop10h 21mAmerican Airlines
Wed 1/143:25 pmLHR - BWI
Nonstop8h 20mAmerican Airlines
Deal found 12/14$639
This FlightHub deal was found by Cheapflights users on 12/14. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:10 pmDCA - LHR
1 stop10h 00mAir Canada
Thu 1/151:25 pmLHR - DCA
1 stop13h 31mAir Canada
Deal found 12/14$641

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 December 15, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$516
(Mytrip)

One-way from

$199
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$978

Good round-trip deal

$623 or less

Good one-way deal

$434 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. 6% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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 December 15, 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

Sat 1/10

7:40 pm-3:25 pm

2 stops14h 45m

London Stansted

Sat 1/17

7:15 am-6:30 pm

2 stops16h 15m

$573

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Thu 1/22

5:30 pm-9:50 am

1 stop11h 20m

London Gatwick

Thu 1/29

10:10 am-9:00 pm

2 stops39h 50m

$577

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 1/23

10:30 pm-3:45 pm

1 stop12h 15m

London Gatwick

Sun 2/1

10:40 am-9:00 pm

1 stop15h 20m

$581

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 1/19

4:50 pm-6:50 pm

2 stops21h 00m

London Heathrow

Sun 1/25

7:50 pm-3:20 pm

2 stops24h 30m

$589

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 2/9

9:45 am-10:40 pm

3 stops31h 55m

London Stansted

Mon 2/16

1:50 pm-4:40 pm

2 stops31h 50m

$590

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Tue 3/10

8:40 pm-2:50 pm

1 stop14h 10m

London Luton

Wed 3/18

8:00 am-7:30 pm

1 stop15h 30m

$591

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Thu 3/5

7:40 pm-10:55 am

1 stop10h 15m

London Gatwick

Mon 3/16

11:55 am-7:40 pm

1 stop11h 45m

$599

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Fri 1/23

10:30 pm-9:50 am

1 stop30h 20m

London Gatwick

Sat 1/31

10:10 am-9:00 pm

2 stops39h 50m

$609

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Sun 1/11

7:40 pm-10:55 am

1 stop10h 15m

London Gatwick

Sun 1/18

11:55 am-6:40 pm

1 stop11h 45m

$610

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 2/13

10:15 pm-10:50 am

Nonstop7h 35m

London Heathrow

Thu 2/19

12:05 pm-4:40 pm

1 stop33h 35m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

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 December 15, 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 December 16, 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.

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 December 15, 2025.

The most flights from WAS to GB0 are scheduled on a Monday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 on average).

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

About 21% of weekly flights between Washington, D.C. and United Kingdom have experienced delays in the past year, with the average delay time being 159 minutes.

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

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening 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 Saturday 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 December 15, 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
9,093 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
United Airlines
7.4
Good
9,093 reviews
United Airlines
7.4
Good
9,093 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
American Airlines
7.2
Good
11,048 reviews
United Airlines
7.4
Good
9,093 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Icelandair
7.0
Good
590 reviews
United Airlines
7.4
Good
9,093 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
Iberia
7.0
Good
3,052 reviews
United Airlines
7.4
Good
9,093 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.
British Airways
6.7
Okay
7,578 reviews
United Airlines
7.4
Good
9,093 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Sunderesh,Dec 2025

AUS - EWR

Smooth flight from Austin to Newark. The crew was friendly.

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 10h 15m. There are 3641 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 $182 while deals on Scandinavian Airlines start at $213 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 Air France (90%), Delta (90%) or Virgin Atlantic (90%) 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 $2,133 for a flight from Washington, D.C. to United Kingdom. The cheapest flight overall is $350 while the most popular route, (Washington, D.C. Dulles Intl - London Heathrow) is currently priced at $420.

  • 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$872FlexibilityNo cancel feeOn-time62%
LufthansaCheapest$311Average$848FlexibilityNo cancel feeOn-time76%
PLAYCheapest$369Average$511FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$395Average$566FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$427Average$623FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$429Average$593FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$497Average$808FlexibilityNo cancel feeOn-time72%
American AirlinesCheapest$497Average$848FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$506Average$1,017FlexibilityNo cancel feeOn-time69%
Aer LingusCheapest$517Average$799FlexibilityNo cancel feeOn-timeN/A

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