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$184+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
Feb 28 — Mar 71
Sat 2/28
Sat 3/7
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 January 29, 2026.

This Mytrip deal was found by Cheapflights users on 1/27. 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 3/25:30 pm
IAD
-
LGW
2 stops22h 05m
TAP AIR PORTUGAL
Wed 3/1810:40 am
LGW
-
IAD
1 stop15h 20m
TAP AIR PORTUGAL
Deal found 1/27$521
This Mytrip deal was found by Cheapflights users on 1/27. 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 4/38:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Wed 4/89:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 1/27$521
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Fri 4/248:30 pm
IAD
-
LGW
1 stop13h 10m
Icelandair
Mon 4/273:40 pm
LGW
-
IAD
1 stop32h 40m
Icelandair
Deal found 1/27$522
This oojo deal was found by Cheapflights users on 1/27. 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.
Fri 4/38:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Sun 4/129:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 1/27$522
This oojo deal was found by Cheapflights users on 1/26. 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.
Tue 2/37:40 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Wed 2/1811:55 am
LGW
-
IAD
1 stop11h 35m
Icelandair
Deal found 1/26$523
This FlightHub deal was found by Cheapflights users on 1/26. 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 4/148:30 pm
IAD
-
LHR
1 stop18h 50m
Icelandair
Mon 4/279:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 1/26$523
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/157:40 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Thu 2/1911:55 am
LGW
-
IAD
1 stop11h 35m
Icelandair
Deal found 1/28$524
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Sat 4/48:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Tue 4/141:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Deal found 1/27$524
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/157:40 pm
IAD
-
LGW
1 stop10h 15m
Icelandair
Sun 2/2211:55 am
LGW
-
IAD
1 stop11h 35m
Icelandair
Deal found 1/28$525
This FlightHub deal was found by Cheapflights users on 1/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/158:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Thu 4/231:05 pm
LHR
-
IAD
1 stop11h 15m
Icelandair
Deal found 1/28$525
This Kiwi.com deal was found by Cheapflights users on 1/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/148:30 pm
IAD
-
LGW
1 stop9h 25m
Icelandair
Tue 2/2411:55 am
LGW
-
IAD
1 stop11h 35m
Icelandair
Deal found 1/28$526
This FlightHub deal was found by Cheapflights users on 1/27. 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.
Fri 4/38:30 pm
IAD
-
LHR
1 stop10h 25m
Icelandair
Mon 4/139:25 pm
LHR
-
IAD
1 stop26h 55m
Icelandair
Deal found 1/27$526

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 January 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$521
(Mytrip)

One-way from

$184
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$643

Good round-trip deal

$653 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. 11% potential increase in price ($95 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 29, 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

Washington, D.C.

Fly to

United Kingdom

Route

Depart

Return

Price

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Mon 2/23

11:30 am-10:00 am

1 stop17h 30m

London Gatwick

Thu 2/26

2:00 pm-10:53 pm

1 stop13h 53m

$587

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 4/22

8:20 pm-2:05 pm

1 stop12h 45m

London Stansted

Wed 4/29

7:00 am-4:50 pm

1 stop14h 50m

$607

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Fri 4/17

8:20 pm-12:30 am

2 stops23h 10m

London Luton

Sat 4/25

2:25 pm-4:50 pm

2 stops31h 25m

$608

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/26

8:20 pm-4:25 pm

2 stops15h 05m

London Heathrow

Sun 5/3

6:40 am-4:50 pm

2 stops15h 10m

$614

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Mon 2/9

11:30 am-10:00 am

1 stop17h 30m

London Gatwick

Thu 2/12

2:00 pm-10:53 pm

1 stop13h 53m

$616

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 2/11

10:15 pm-10:50 am

Nonstop7h 35m

London Heathrow

Thu 2/19

6:50 am-2:35 pm

1 stop12h 45m

$618

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 3/10

7:20 pm-6:40 am

Nonstop7h 20m

London Heathrow

Tue 3/17

6:50 am-3:35 pm

1 stop12h 45m

$618

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 2/11

6:20 pm-6:40 am

Nonstop7h 20m

London Heathrow

Wed 2/18

6:50 am-2:35 pm

1 stop12h 45m

$618

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 2/25

10:20 pm-10:40 am

Nonstop7h 20m

London Heathrow

Sun 3/1

8:40 am-4:05 pm

1 stop12h 25m

$619

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Fri 2/27

10:20 pm-10:40 am

Nonstop7h 20m

London Heathrow

Mon 3/9

8:40 am-5:05 pm

1 stop12h 25m

$619

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/27

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 January 29, 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 January 29, 2026.

The most flights from WAS to GB0 are scheduled on a Wednesday (26 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (20 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 162 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 Thursday 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 January 29, 2026.
Peruse reviews from past customers who have flown with United Airlines, Aer Lingus, 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
9,215 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,215 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Aer Lingus
7.2
Good
1,443 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Icelandair
7.1
Good
606 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Iberia
7.0
Good
3,100 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
British Airways
6.7
Okay
7,705 reviews
United Airlines
7.4
Good
9,215 reviews

Boarding

7.7

Comfort

7.3

Crew

8.1

Entertainment

7.1

Overall

7.4

Food

6.6

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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 35m. 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 $182 while deals on TAP AIR PORTUGAL 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. Dulles Intl - London Gatwick as they are the most popular.

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

    Consider American Airlines (84%), Aer Lingus (84%) or Finnair (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 $2,263 for a flight from Washington, D.C. to United Kingdom. The cheapest flight overall is $258 while the most popular route, (Washington, D.C. Dulles Intl - London Heathrow) is currently priced at $415.

  • 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 January 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$857FlexibilityNo cancel feeOn-time62%
LufthansaCheapest$311Average$854FlexibilityNo cancel feeOn-time76%
PLAYCheapest$372Average$517FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$411Average$561FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$417Average$643FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$442Average$865FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$454Average$597FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$471Average$800FlexibilityNo cancel feeOn-time72%
KLMCheapest$488Average$741FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$497Average$836FlexibilityNo cancel feeOn-time71%

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