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$283+ 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — LHR
Apr 20 — Apr 271
Mon 4/20
Mon 4/27
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 March 21, 2026.

This oojo deal was found by Cheapflights users on 3/17. 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.
Mon 9/218:20 pm
IAD
-
LHR
1 stop20h 20m
Scandinavian Airlines
Fri 10/97:05 am
LHR
-
IAD
2 stops14h 55m
Scandinavian Airlines
Deal found 3/17$613
This Mytrip deal was found by Cheapflights users on 3/16. 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 4/158:30 pm
BWI
-
LGW
1 stop13h 10m
Icelandair
Wed 4/223:40 pm
LGW
-
BWI
1 stop32h 45m
Icelandair
Deal found 3/16$613
This Booking.com deal was found by Cheapflights users on 3/16. 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.
Sun 10/188:20 pm
IAD
-
LHR
2 stops15h 05m
Scandinavian Airlines
Fri 10/237:05 am
LHR
-
IAD
2 stops14h 55m
Scandinavian Airlines
Deal found 3/16$614
This FlightHub deal was found by Cheapflights users on 3/16. 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.
Sun 10/48:20 pm
IAD
-
LHR
2 stops15h 40m
Scandinavian Airlines
Sat 10/105:30 pm
LHR
-
IAD
2 stops28h 30m
Scandinavian Airlines
Deal found 3/16$615
This Mytrip deal was found by Cheapflights users on 3/16. 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 4/128:30 pm
IAD
-
STN
2 stops21h 50m
Multiple Airlines
Tue 4/287:10 am
STN
-
IAD
2 stops17h 10m
Multiple Airlines
Deal found 3/16$616
This oojo deal was found by Cheapflights users on 3/17. 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.
Thu 9/248:20 pm
IAD
-
LHR
1 stop14h 40m
Scandinavian Airlines
Fri 10/26:40 am
LHR
-
IAD
1 stop15h 20m
Scandinavian Airlines
Deal found 3/17$616
This Mytrip deal was found by Cheapflights users on 3/17. 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 5/31:20 pm
IAD
-
LTN
2 stops27h 20m
Multiple Airlines
Wed 5/131:50 pm
LTN
-
IAD
2 stops26h 45m
Multiple Airlines
Deal found 3/17$617
This Booking.com deal was found by Cheapflights users on 3/17. 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.
Mon 4/208:20 pm
IAD
-
LHR
2 stops15h 05m
Scandinavian Airlines
Thu 4/236:40 am
LHR
-
IAD
2 stops15h 20m
Scandinavian Airlines
Deal found 3/17$618
This oojo deal was found by Cheapflights users on 3/17. 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.
Mon 9/78:20 pm
IAD
-
LHR
1 stop17h 10m
Scandinavian Airlines
Wed 9/239:05 pm
LHR
-
IAD
2 stops24h 55m
Scandinavian Airlines
Deal found 3/17$619
This FlightHub deal was found by Cheapflights users on 3/18. 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 4/285:05 pm
IAD
-
LGW
1 stop11h 40m
TAP AIR PORTUGAL
Thu 5/710:35 am
LGW
-
IAD
1 stop15h 00m
TAP AIR PORTUGAL
Deal found 3/18$620
This FlightHub deal was found by Cheapflights users on 3/17. 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.
Thu 10/158:20 pm
IAD
-
LHR
2 stops17h 30m
Scandinavian Airlines
Mon 10/196:40 am
LHR
-
IAD
1 stop15h 20m
Scandinavian Airlines
Deal found 3/17$620
This Mytrip deal was found by Cheapflights users on 3/17. 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 5/48:20 pm
IAD
-
LGW
3 stops29h 40m
Multiple Airlines
Wed 5/136:55 am
LGW
-
IAD
2 stops15h 05m
Multiple Airlines
Deal found 3/17$621

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 March 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$603
(Mytrip)

One-way from

$283
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$702

Good round-trip deal

$756 or less

Good one-way deal

$398 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 ($100 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 March 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 March 21, 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

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Sun 8/16

11:20 pm-11:45 am

1 stop31h 25m

London Gatwick

Wed 8/26

3:40 pm-10:15 pm

1 stop11h 35m

$679

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 4/5

1:20 pm-9:55 am

1 stop15h 35m

London Stansted

Tue 4/14

5:35 pm-11:35 am

1 stop23h 00m

$696

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 4/27

9:45 pm-4:50 pm

1 stop38h 05m

London Stansted

Thu 5/7

5:35 pm-11:35 am

1 stop23h 00m

$696

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 4/26

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Thu 4/30

1:00 pm-7:20 pm

1 stop11h 20m

$711

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 4/12

8:30 pm-2:40 pm

1 stop13h 10m

London Gatwick

Tue 4/21

3:40 pm-7:20 pm

1 stop32h 40m

$712

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Sun 9/6

11:20 pm-2:40 pm

1 stop10h 20m

London Gatwick

Thu 9/10

1:00 pm-7:25 pm

1 stop11h 25m

$727

Washington, D.C.Edinburgh

IAD - EDI

IADEDI

Washington, D.C. Dulles Intl

Thu 5/7

8:20 pm-6:25 pm

1 stop17h 05m

Edinburgh Turnhouse

Fri 5/15

7:40 pm-5:00 pm

2 stops26h 20m

$740

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 4/19

1:20 pm-9:55 am

1 stop15h 35m

London Gatwick

Sun 4/26

7:00 am-11:35 am

1 stop33h 35m

$768

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Mon 4/27

12:45 pm-9:35 am

2 stops15h 50m

London Heathrow

Thu 5/7

9:05 pm-5:00 pm

2 stops24h 55m

$787

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Sun 5/3

10:11 am-7:10 am

1 stop15h 59m

London Heathrow

Thu 5/14

3:15 pm-12:57 am

1 stop14h 42m

$794

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/16

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, 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 March 21, 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 March 21, 2026.

The most flights from WAS to GB0 are scheduled on a Friday (26 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (18 on average).

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

About 20% of weekly flights between Washington, D.C. and United Kingdom have experienced delays in the past year, with the average delay time being 164 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 early afternoon 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 Friday 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 March 21, 2026.
Peruse reviews from past customers who have flown with United Airlines,American Airlines, andIcelandair 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
9,452 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

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
9,452 reviews
United Airlines
7.4
Good
9,452 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

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
American Airlines
7.1
Good
11,488 reviews
United Airlines
7.4
Good
9,452 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

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
7.0
Good
625 reviews
United Airlines
7.4
Good
9,452 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

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
3,146 reviews
United Airlines
7.4
Good
9,452 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

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
7,805 reviews
United Airlines
7.4
Good
9,452 reviews

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Entertainment

7.1

Overall

7.4

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 15h 35m. There are 3683 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 $191 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. Dulles Intl - London Gatwick as they are the most popular.

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

    Consider KLM (90%), Air France (90%) or Delta (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 $2,260 for a flight from Washington, D.C. to United Kingdom. The cheapest flight overall is $343 while the most popular route, (Washington, D.C. Dulles Intl - London Heathrow) is currently priced at $463.

  • 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 March 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$31Average$844FlexibilityNo cancel feeOn-time62%
TAP AIR PORTUGALCheapest$395Average$549FlexibilityNo cancel feeOn-timeN/A
IcelandairCheapest$398Average$637FlexibilityNo cancel feeOn-time76%
PLAYCheapest$406Average$614FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$454Average$596FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$462Average$937FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$497Average$843FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$515Average$829FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$520Average$839FlexibilityNo cancel feeOn-time72%
British AirwaysCheapest$523Average$776FlexibilityNo cancel feeOn-time70%

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