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$235+ 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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
Sep 8 — Sep 151
Tue 9/8
Tue 9/15
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 August 9, 2026.

This Mytrip deal was found by Cheapflights users on 8/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:30 pm -
2 stops14h 50m
Sun 11/88:35 pm -
2 stops25h 40m
Deal found 8/6$624
This Kissandfly.com deal was found by Cheapflights users on 8/9. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/215:40 pm -
1 stop20h 10m
Tue 9/297:50 pm -
1 stop24h 20m
Deal found 8/9$624
This Mytrip deal was found by Cheapflights users on 8/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/78:20 pm -
3 stops33h 00m
Wed 9/1611:00 am -
3 stops35h 00m
Deal found 8/6$625
This Gotogate deal was found by Cheapflights users on 8/7. 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.
Mon 9/215:40 pm -
1 stop11h 40m
Wed 9/308:00 am -
1 stop17h 35m
Deal found 8/7$625
This Mytrip deal was found by Cheapflights users on 8/8. 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 10/128:20 pm -
2 stops21h 05m
Sun 10/186:55 pm -
2 stops27h 05m
Deal found 8/8$626
This Gotogate deal was found by Cheapflights users on 8/4. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:35 pm -
1 stop18h 25m
Mon 9/286:45 pm -
1 stop25h 25m
Deal found 8/4$626
This Mytrip deal was found by Cheapflights users on 8/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:45 pm -
2 stops21h 35m
Tue 9/2912:30 pm -
2 stops31h 40m
Deal found 8/6$627
This Gotogate deal was found by Cheapflights users on 8/8. 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.
Mon 9/215:40 pm -
1 stop11h 40m
Mon 10/56:00 am -
1 stop14h 10m
Deal found 8/8$627
This Mytrip deal was found by Cheapflights users on 8/6. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/98:20 pm -
2 stops19h 10m
Thu 10/154:55 pm -
2 stops29h 05m
Deal found 8/6$628
This oojo deal was found by Cheapflights users on 8/7. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1110:30 pm -
1 stop11h 35m
Mon 11/164:35 pm -
1 stop27h 10m
Deal found 8/7$628
This Gotogate deal was found by Cheapflights users on 8/8. 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.
Mon 10/55:40 pm -
1 stop11h 40m
Thu 10/1511:20 am -
1 stop14h 15m
Deal found 8/8$628
This Cheapflightsfares deal was found by Cheapflights users on 8/5. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2910:35 pm -
1 stop12h 00m
Wed 10/710:35 am -
1 stop15h 00m
Deal found 8/5$629

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 August 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$624
(Mytrip)

One-way from

$235
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$863

Good round-trip deal

$913 or less

Good one-way deal

$374 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. 20% potential increase in price ($220 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 August 9, 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 Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Fri 10/23

5:05 pm-12:45 pm

1 stop14h 40m

London Heathrow

Wed 10/28

6:30 pm-4:15 pm

1 stop25h 45m

$646

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Wed 10/14

5:45 pm-10:55 pm

1 stop24h 10m

London Heathrow

Sun 10/18

7:50 pm-3:10 pm

1 stop24h 20m

$646

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LGW London Gatwick

IADLGW

Washington, D.C. Dulles Intl

Sun 11/1

10:30 pm-9:50 am

1 stop30h 20m

London Gatwick

Mon 11/16

4:35 pm-2:45 pm

1 stop27h 10m

$654

BaltimoreLondon

BWI Baltimore/Washington - LGW London Gatwick

BWILGW

Baltimore/Washington

Mon 9/21

8:30 pm-10:20 pm

2 stops20h 50m

London Gatwick

Mon 9/28

6:05 pm-10:15 pm

2 stops33h 10m

$670

BaltimoreLondon

BWI Baltimore/Washington - LGW London Gatwick

BWILGW

Baltimore/Washington

Fri 10/23

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Tue 10/27

11:55 am-7:40 pm

1 stop11h 45m

$689

BaltimoreLondon

BWI Baltimore/Washington - LGW London Gatwick

BWILGW

Baltimore/Washington

Mon 9/21

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Tue 10/6

3:40 pm-10:15 pm

1 stop11h 35m

$697

BaltimoreLondon

BWI Baltimore/Washington - LHR London Heathrow

BWILHR

Baltimore/Washington

Mon 9/21

8:30 pm-11:55 am

1 stop10h 25m

London Heathrow

Mon 9/28

9:25 pm-10:15 pm

1 stop29h 50m

$707

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LGW London Gatwick

IADLGW

Washington, D.C. Dulles Intl

Mon 9/28

5:40 pm-8:25 pm

2 stops21h 45m

London Gatwick

Tue 10/13

4:25 pm-3:10 pm

1 stop27h 45m

$772

Washington, D.C.London

IAD Washington, D.C. Dulles Intl - LHR London Heathrow

IADLHR

Washington, D.C. Dulles Intl

Thu 11/5

8:30 pm-4:00 pm

1 stop14h 30m

London Heathrow

Sun 11/8

7:50 pm-5:15 pm

2 stops26h 25m

$784

BaltimoreLondon

BWI Baltimore/Washington - LGW London Gatwick

BWILGW

Baltimore/Washington

Mon 9/21

9:27 am-10:00 am

1 stop19h 33m

London Gatwick

Wed 9/30

2:00 pm-8:44 pm

1 stop35h 44m

$800

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/4

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

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 $666). Flying from Washington, D.C. to United Kingdom in June is currently the most expensive (average of $1,261). 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 August 9, 2026.

When flying from Washington, D.C. to United Kingdom, 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 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 August 9, 2026.

The most flights from WAS to GB0 are scheduled on a Friday (29 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (22 on average).

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

About 18% of weekly flights between Washington, D.C. and United Kingdom have experienced delays in the past year, with the average delay time being 183 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?

Saturday tends to have the lowest number of delays on this route, whereas Wednesday 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 13% of flights being delayed.

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 87 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.

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 August 9, 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
10,089 reviews

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
United Airlines
7.4
Good
10,089 reviews
United Airlines
7.4
Good
10,089 reviews

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Aer Lingus
7.3
Good
1,691 reviews
United Airlines
7.4
Good
10,089 reviews

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
American Airlines
7.1
Good
11,893 reviews
United Airlines
7.4
Good
10,089 reviews

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
Icelandair
6.9
Okay
726 reviews
United Airlines
7.4
Good
10,089 reviews

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.
British Airways
6.7
Okay
8,151 reviews
United Airlines
7.4
Good
10,089 reviews

Crew

8.1

Entertainment

7.1

Food

6.7

Boarding

7.7

Comfort

7.3

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

IAD - TYS

It was a short flight on a small express plane, so no time for amenities. Quickly on, quickly off. No complaints.

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 13h 10m. 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 Virgin Atlantic, which is currently one of the cheapest options available, starting at $149. TAP AIR PORTUGAL flights start at $218 while deals on Icelandair start at $228 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 Finnair (79%), KLM (71%) or Air France (71%) 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 $2,851 for a flight from Washington, D.C. to United Kingdom. The cheapest flight overall is $374 while the most popular route, (Washington, D.C. Dulles Intl - London Heathrow) is currently priced at $608.

  • 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 $666). Flying from Washington, D.C. to United Kingdom in June is currently the most expensive (average of $1,261). 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 August 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$309Average$541FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$374Average$884FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$462Average$976FlexibilityNo cancel feeOn-time69%
IcelandairCheapest$465Average$720FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$520Average$914FlexibilityNo cancel feeOn-time70%
DeltaCheapest$530Average$994FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$560Average$798FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$577Average$887FlexibilityNo cancel feeOn-time67%
Aer LingusCheapest$577Average$979FlexibilityNo cancel feeOn-timeN/A
Air FranceCheapest$581Average$993FlexibilityNo cancel feeOn-time77%

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