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$457+ Cheap flights from London (LON) to Washington

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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
LON — SEA
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from London to Washington

Cheapest flights from London to Washington
Explore the most affordable flight options available from London to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This Gotogate deal was found by Cheapflights users on 12/10. 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.
Wed 12/2412:15 pmLHR - SEA
1 stop12h 45mIcelandair
Tue 1/62:35 pmSEA - LHR
1 stop20h 55mIcelandair
Deal found 12/10$646
This Kiwi.com deal was found by Cheapflights users on 12/10. 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.
Wed 12/247:40 amLHR - SEA
1 stop13h 40mLufthansa
Tue 1/63:40 pmSEA - LHR
1 stop12h 10mLufthansa
Deal found 12/10$806
This Kiwi.com deal was found by Cheapflights users on 12/11. 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 12/238:35 pmLHR - SEA
1 stop28h 25mIcelandair
Mon 12/292:35 pmSEA - LHR
1 stop20h 55mIcelandair
Deal found 12/11$810
This ChecknFly deal was found by Cheapflights users on 12/10. 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 ChecknFly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/244:30 pmLHR - SEA
1 stop30h 24mFinnair
Tue 1/66:00 amSEA - LHR
2 stops24h 00mFinnair
Deal found 12/10$816
This Cheapflightsfares deal was found by Cheapflights users on 12/10. 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 12/2412:15 pmLHR - SEA
1 stop12h 45mIcelandair
Sun 12/282:35 pmSEA - LHR
1 stop20h 55mIcelandair
Deal found 12/10$817
This United Airlines deal was found by Cheapflights users on 12/10. 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 12/241:30 pmLHR - SEA
2 stops19h 29mUnited Airlines
Tue 1/66:03 amSEA - LHR
1 stop17h 22mUnited Airlines
Deal found 12/10$833
This Gotogate deal was found by Cheapflights users on 12/10. 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.
Wed 12/242:30 pmLHR - SEA
1 stop27h 01mAir Canada
Tue 1/65:50 amSEA - LHR
2 stops17h 20mAir Canada
Deal found 12/10$836
This Gotogate deal was found by Cheapflights users on 12/10. 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.
Fri 12/2611:55 amLGW - SEA
1 stop13h 05mIcelandair
Tue 1/62:35 pmSEA - LGW
1 stop12h 20mIcelandair
Deal found 12/10$848
This TravelUp deal was found by Cheapflights users on 12/11. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/302:45 pmLHR - PDX
1 stop15h 14mVirgin Atlantic
Tue 1/131:39 pmPDX - LHR
1 stop12h 21mVirgin Atlantic
Deal found 12/11$857
This Mytrip deal was found by Cheapflights users on 12/11. 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 12/246:20 amSTN - SEA
2 stops17h 20mMultiple Airlines
Tue 1/68:10 amSEA - STN
2 stops26h 10mMultiple Airlines
Deal found 12/11$930
This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
Wed 12/245:55 amLGW - SEA
2 stops17h 45mMultiple Airlines
Tue 1/610:04 amSEA - LGW
1 stop35h 56mMultiple Airlines
Deal found 12/11$932
This Virgin Atlantic deal was found by Cheapflights users on 12/11. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/288:25 pmLHR - PDX
1 stop23h 00mVirgin Atlantic
Thu 1/157:00 amPDX - LHR
1 stop17h 05mVirgin Atlantic
Deal found 12/11$953

Find flight deals from London to Washington

Keep the following information in mind while searching for London to Washington flight deals. Data was last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$609

One-way from

$457
(Kiwi.com)

Popular in

July

Cheapest in

January

Average price

$853

Good round-trip deal

$793 or less

Good one-way deal

$713 or less
Provider with most accurate pricing for London (LON)-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for London (LON)-Seattle/Tacoma Intl flights.
Search Deals
From London (LON) to Washington
Search Deals
One-way flight from London (LON) to Washington
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($106 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 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 London (LON) to Washington.
Search Deals
Price to beat on a one-way flight from London (LON) to Washington.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from London to Washington 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 12, 2025.
Use the filters below to find and compare flights from London to Washington that are best for you.

Fly from

London

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 2/2

6:00 am-5:00 pm

2 stops19h 00m

Seattle/Tacoma Intl

Mon 2/16

2:35 pm-10:05 pm

2 stops23h 30m

$626

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 2/2

2:55 pm-4:55 pm

Nonstop10h 00m

Seattle/Tacoma Intl

Sun 2/15

9:00 am-6:50 am

1 stop13h 50m

$699

LondonSeattle

LCY - SEA

LCYSEA

London City

Tue 3/10

8:05 pm-12:35 pm

1 stop23h 30m

Seattle/Tacoma Intl

Tue 3/17

4:00 pm-5:20 pm

1 stop18h 20m

$700

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 3/10

6:30 am-1:10 pm

1 stop13h 40m

Seattle/Tacoma Intl

Tue 3/17

8:00 am-7:30 am

2 stops40h 30m

$704

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Tue 1/13

11:55 am-9:47 pm

1 stop17h 52m

Seattle/Tacoma Intl

Wed 1/28

6:50 pm-12:20 pm

Nonstop9h 30m

$734

LondonSpokane

LHR - GEG

LHRGEG

London Heathrow

Tue 3/10

6:35 am-9:18 pm

2 stops21h 43m

Spokane

Tue 3/17

5:00 am-7:55 am

2 stops19h 55m

$743

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 4/20

9:50 am-11:35 am

Nonstop9h 45m

Seattle/Tacoma Intl

Fri 4/24

3:57 pm-2:25 pm

1 stop14h 28m

$748

LondonPortland

LHR - PDX

LHRPDX

London Heathrow

Thu 2/12

11:10 am-9:15 am

2 stops30h 05m

Portland

Sat 2/14

7:30 am-7:10 am

2 stops39h 40m

$754

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Thu 4/9

6:30 am-11:35 am

1 stop13h 05m

Seattle/Tacoma Intl

Mon 4/13

1:30 pm-9:50 am

1 stop12h 20m

$754

LondonSeattle

LHR - SEA

LHRSEA

London Heathrow

Mon 4/20

9:50 am-11:35 am

Nonstop9h 45m

Seattle/Tacoma Intl

Fri 4/24

8:20 pm-1:45 pm

Nonstop9h 25m

$756

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 60 results
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Best time to book a flight from London to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from London 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 London to Washington

What is the cheapest month to book a flight from London to State of Washington?

Currently, March is the cheapest month in which you can book a flight from London to State of Washington (average of $408). Flying from London to State of Washington in August is currently the most expensive (average of $617). 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 LON to WA?

Find hourly flight availability from London to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s optimal to fly from London to State of Washington in the morning. By choosing this option you can save up to 13% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from London to State of Washington?

Use this chart to determine the cheapest time to fly round-trip from London to Washington. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their London to State of Washington flight should consider departing on Monday mornings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London to State of Washington

Explore weekly flight availability from London to Washington. 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 12, 2025.

The most flights from LON to USWA are scheduled on a Thursday (15 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 on average).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. 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 Washington. Reviews last updated December 12, 2025.
Read through reviews of airlines operating flights from London to Washington, such as Delta, Virgin Atlantic, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Virgin Atlantic
7.5
Good
675 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,049 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Icelandair
7.0
Good
589 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
British Airways
6.7
Okay
7,571 reviews
Delta
7.9
Good
8,007 reviews

Boarding

8.1

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

7.9

Food

7.3

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from London to Washington. 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 London to State of Washington?

    There are many flights that can get you from London to State of Washington in 10h. Fly via Finnair, Virgin Atlantic, or United Airlines to get the fastest option. There are 4783 mi between London and State of Washington. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from London to State of Washington one-way?

    The cheapest airline one-way is Scandinavian Airlines, with whom users have recently found tickets for as low as $383. However, be on the lookout for offers from Aer Lingus and WestJet, as they are both options that can get you from London to State of Washington for a low price.

  • What are the most popular routes from London to State of Washington?

    While some choose either London Gatwick - Seattle/Tacoma Intl or London City - Seattle/Tacoma Intl, London Heathrow - Seattle/Tacoma Intl is the most popular route from London to State of Washington.

  • What are the most reliable airlines from London to State of Washington?

    The top 3 most reliable airlines when flying from London to State of Washington are Scandinavian Airlines (95%), Air France (88%) and Delta (85%).

  • What are the cheapest flights from London to State of Washington?

    Looking for the cheapest flight from London to State of Washington? While on average our users pay $2,179, our data indicates the cheapest price to be $542. The most popular route (London Heathrow - Seattle/Tacoma Intl), is priced around $497.

  • Can I find deals for flights from London to Washington that include hotel bookings?

    Yes. In addition to deals on London to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from London to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Washington.

  • Can I find deals for business class flights from London to Washington?

    Yes. Cheapflights offers flight deals from London to Washington 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 London to State of Washington?

    Currently, March is the cheapest month in which you can book a flight from London to State of Washington (average of $408). Flying from London to State of Washington in August is currently the most expensive (average of $617). 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.

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Alternative routes for London to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from London to Washington

Discover the top 5 airlines that operate flights from London to Washington. 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 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$418Average$899FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$553Average$749FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$574Average$772FlexibilityNo cancel feeOn-time72%
DeltaCheapest$575Average$833FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$589Average$854FlexibilityNo cancel feeOn-time71%

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