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$208+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
Aug 6 — Aug 131
Thu 8/6
Thu 8/13
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 July 7, 2026.

This KAYAK deal was found by Cheapflights users on 7/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2110:35 pm
IAD
-
LGW
1 stop12h 00m
TAP AIR PORTUGAL
Mon 9/284:25 pm
LGW
-
IAD
1 stop27h 45m
TAP AIR PORTUGAL
Deal found 7/2$671
This Mytrip deal was found by Cheapflights users on 7/1. 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 8/178:30 pm
IAD
-
STN
2 stops22h 50m
Multiple Airlines
Mon 8/246:30 am
STN
-
IAD
3 stops37h 54m
Multiple Airlines
Deal found 7/1$672
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 8/248:30 pm
IAD
-
LGW
2 stops17h 45m
Multiple Airlines
Tue 9/12:00 pm
LGW
-
IAD
1 stop25h 07m
Multiple Airlines
Deal found 7/1$672
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:20 pm
IAD
-
LTN
2 stops18h 35m
Multiple Airlines
Sat 10/178:35 pm
LTN
-
IAD
2 stops25h 25m
Multiple Airlines
Deal found 7/2$673
This Mytrip deal was found by Cheapflights users on 7/2. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/238:30 pm
IAD
-
STN
2 stops21h 50m
Multiple Airlines
Mon 8/317:15 pm
STN
-
IAD
2 stops32h 00m
Multiple Airlines
Deal found 7/2$674
This Norse deal was found by Cheapflights users on 7/2. 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 Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/161:32 pm
IAD
-
LGW
1 stop15h 28m
Multiple Airlines
Sun 8/232:00 pm
LGW
-
IAD
1 stop31h 07m
Multiple Airlines
Deal found 7/2$674
This Norse deal was found by Cheapflights users on 7/3. 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 Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1811:05 am
IAD
-
LGW
1 stop17h 55m
Multiple Airlines
Tue 8/252:00 pm
LGW
-
IAD
1 stop25h 07m
Multiple Airlines
Deal found 7/3$675
This Mytrip deal was found by Cheapflights users on 7/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/28:30 pm
IAD
-
LTN
2 stops23h 00m
Multiple Airlines
Mon 10/58:15 am
LTN
-
IAD
2 stops16h 05m
Multiple Airlines
Deal found 7/4$675
This BusinessClass deal was found by Cheapflights users on 7/3. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:05 pm
IAD
-
LHR
1 stop12h 15m
TAP AIR PORTUGAL
Tue 9/296:00 am
LHR
-
IAD
1 stop14h 10m
TAP AIR PORTUGAL
Deal found 7/3$675
This Mytrip deal was found by Cheapflights users on 7/6. 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 10/710:35 pm
IAD
-
LTN
2 stops15h 25m
Multiple Airlines
Wed 10/148:00 am
LTN
-
IAD
2 stops17h 35m
Multiple Airlines
Deal found 7/6$676
This Booking.com deal was found by Cheapflights users on 7/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/218:30 pm
IAD
-
LHR
2 stops14h 55m
Scandinavian Airlines
Sun 11/229:05 pm
LHR
-
IAD
2 stops25h 10m
Scandinavian Airlines
Deal found 7/2$676
This Mytrip deal was found by Cheapflights users on 7/5. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/238:20 pm
IAD
-
LTN
2 stops17h 45m
Multiple Airlines
Tue 9/297:45 pm
LTN
-
IAD
2 stops26h 15m
Multiple Airlines
Deal found 7/5$677

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 July 7, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$671
(KAYAK)

One-way from

$208
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$916

Good round-trip deal

$870 or less

Good one-way deal

$375 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. 21% potential increase in price ($220 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($39 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 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 - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 8/2

1:32 pm-10:00 am

1 stop15h 28m

London Gatwick

Sat 8/29

2:00 pm-4:07 pm

1 stop31h 07m

$685

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 8/10

7:18 pm-10:00 am

1 stop33h 42m

London Gatwick

Wed 8/19

2:00 pm-4:07 pm

1 stop31h 07m

$687

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Sat 9/26

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Thu 10/1

3:40 pm-10:15 pm

1 stop11h 35m

$695

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Mon 7/27

9:38 pm-10:00 am

1 stop31h 22m

London Gatwick

Tue 8/18

2:00 pm-11:24 am

1 stop26h 24m

$710

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Tue 8/18

12:09 pm-10:00 am

1 stop16h 51m

London Gatwick

Tue 8/25

2:00 pm-11:24 am

1 stop26h 24m

$729

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sat 8/29

8:20 pm-6:50 pm

2 stops17h 30m

London Heathrow

Sat 9/5

6:40 am-5:00 pm

1 stop15h 20m

$735

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 9/18

8:20 pm-1:35 pm

1 stop12h 15m

London Heathrow

Wed 9/30

9:05 pm-5:00 pm

2 stops24h 55m

$753

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 9/16

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Wed 9/30

3:40 pm-7:20 pm

1 stop32h 40m

$766

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 9/16

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Thu 10/1

3:40 pm-7:20 pm

1 stop32h 40m

$766

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 9/23

10:35 pm-11:20 am

2 stops31h 45m

London Gatwick

Wed 9/30

4:25 pm-3:10 pm

1 stop27h 45m

$769

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

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

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 $1,210). 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 July 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 July 7, 2026.

The most flights from WAS to GB0 are scheduled on a Monday (28 on average). You will have fewer flight options on Monday, 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 180 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 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 14% 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 39 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 July 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
9,944 reviews

Food

6.7

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

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
9,944 reviews
United Airlines
7.4
Good
9,944 reviews

Food

6.7

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

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
1,647 reviews
United Airlines
7.4
Good
9,944 reviews

Food

6.7

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

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
11,782 reviews
United Airlines
7.4
Good
9,944 reviews

Food

6.7

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

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
7.0
Good
702 reviews
United Airlines
7.4
Good
9,944 reviews

Food

6.7

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

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
8,101 reviews
United Airlines
7.4
Good
9,944 reviews

Food

6.7

Comfort

7.3

Crew

8.1

Overall

7.4

Boarding

7.7

Entertainment

7.1

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 JetBlue, which is currently one of the cheapest options available, starting at $92. Virgin Atlantic flights start at $149 while deals on TAP AIR PORTUGAL start at $214 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 KLM (80%), Air France (80%) or Delta (80%) 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 $4,099 for a flight from Washington, D.C. to United Kingdom. The cheapest flight overall is $312 while the most popular route, (Washington, D.C. Dulles Intl - London Heathrow) is currently priced at $607.

  • 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 $1,210). 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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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 July 7, 2026.
AirlineCheapestAverageFlexibilityOn-time
TAP AIR PORTUGALCheapest$309Average$519FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$404Average$824FlexibilityNo cancel feeOn-time72%
United AirlinesCheapest$462Average$959FlexibilityNo cancel feeOn-time69%
IcelandairCheapest$479Average$713FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$497Average$779FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$520Average$885FlexibilityNo cancel feeOn-time70%
DeltaCheapest$530Average$961FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$560Average$798FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$577Average$887FlexibilityNo cancel feeOn-time67%
Air FranceCheapest$581Average$988FlexibilityNo cancel feeOn-time77%

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