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$248+ Cheap flights from Washington 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 4/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LHR
Feb 26 — Mar 51
Wed 2/26
Wed 3/5
1 adult, Economy
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Cheap flight deals from Washington to United Kingdom

Keep the following information in mind while searching for Washington to United Kingdom flight deals. Data was last updated February 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$556
(oojo)

One-way from

$248
(Mytrip)

Popular in

June

Cheapest in

January

Average price

$709

Good round-trip deal

$695 or less

Good one-way deal

$488 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-London (LON) flights.
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From Washington to United Kingdom
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One-way flight from Washington to United Kingdom
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Highest demand for flights based on searches. 22% potential increase in price ($232 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Washington to United Kingdom.
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Price to beat on a one-way flight from Washington to United Kingdom.
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Find flight deals from Washington to United Kingdom

Cheapest flights from Washington to United Kingdom
Explore the most affordable flight options available from Washington to United Kingdom. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 21, 2025.

This oojo deal was found by Cheapflights users on 2/20. 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 5/27:00 pmSEA - MAN
1 stop32h 40mIcelandair
Wed 5/71:05 pmMAN - SEA
1 stop15h 35mIcelandair
Deal found 2/20$556
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 4/303:45 pmSEA - LGW
1 stop12h 00mMultiple Airlines
Mon 5/56:50 pmLGW - SEA
2 stops33h 38mMultiple Airlines
Deal found 2/20$585
This Gotogate deal was found by Cheapflights users on 2/20. 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.
Tue 4/16:45 pmSEA - LHR
1 stop12h 10mAer Lingus
Thu 4/107:40 amLHR - SEA
1 stop17h 19mAer Lingus
Deal found 2/20$585
This oojo deal was found by Cheapflights users on 2/20. 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.
Sat 3/12:35 pmSEA - LHR
1 stop12h 15mIcelandair
Wed 3/512:15 pmLHR - SEA
1 stop12h 45mIcelandair
Deal found 2/20$586
This Mytrip deal was found by Cheapflights users on 2/19. 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 3/303:45 pmSEA - LGW
1 stop12h 00mIcelandair
Thu 4/31:00 pmLGW - SEA
1 stop12h 50mIcelandair
Deal found 2/19$593
This Booking.com deal was found by Cheapflights users on 2/19. 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.
Wed 4/168:20 pmSEA - LHR
Nonstop9h 20mIberia
Wed 4/309:50 amLHR - SEA
Nonstop9h 45mIberia
Deal found 2/19$597
This Gotogate deal was found by Cheapflights users on 2/20. 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.
Thu 5/17:40 pmPDX - LHR
1 stop33h 40mMultiple Airlines
Thu 5/86:00 amLHR - PDX
2 stops20h 45mMultiple Airlines
Deal found 2/20$609
This World Air Fares deal was found by Cheapflights users on 2/20. 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 World Air Fares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/148:25 pmSEA - LHR
Nonstop9h 45mKLM
Mon 3/246:30 amLHR - SEA
1 stop13h 10mKLM
Deal found 2/20$609
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/197:15 amSEA - MAN
1 stop16h 45mDelta
Wed 3/2612:00 pmMAN - SEA
1 stop17h 22mDelta
Deal found 2/20$610
This Booking.com deal was found by Cheapflights users on 2/20. 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.
Wed 10/84:20 pmSEA - LHR
2 stops18h 30mScandinavian Airlines
Wed 10/157:05 amLHR - SEA
2 stops14h 55mScandinavian Airlines
Deal found 2/20$611
This Booking.com deal was found by Cheapflights users on 2/20. 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 3/96:45 pmSEA - LHR
Nonstop9h 25mVirgin Atlantic
Tue 3/251:15 pmLHR - SEA
Nonstop10h 00mVirgin Atlantic
Deal found 2/20$613
This Expedia deal was found by Cheapflights users on 2/19. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/117:35 amPDX - LHR
1 stop16h 45mIberia
Tue 3/188:20 amLHR - PDX
1 stop21h 40mIberia
Deal found 2/19$614

Find flights from Washington to United Kingdom within your budget

Customize your flight search to find flights from Washington 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 February 21, 2025.

Fly from

Washington

Fly to

United Kingdom

Route

Depart

Return

Price

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Fri 5/2

7:00 pm-11:40 am

1 stop32h 40m

Manchester

Wed 5/7

1:05 pm-8:40 pm

1 stop15h 35m

$556

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 4/30

3:45 pm-11:45 am

1 stop12h 00m

London Gatwick

Mon 5/5

6:50 pm-8:28 pm

2 stops33h 38m

$585

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Tue 4/1

6:45 pm-2:55 pm

1 stop12h 10m

London Heathrow

Thu 4/10

7:40 am-4:59 pm

1 stop17h 19m

$585

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Wed 4/23

3:45 pm-8:20 pm

1 stop20h 35m

London Heathrow

Wed 4/30

1:05 pm-8:40 pm

1 stop15h 35m

$589

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Wed 4/16

8:20 pm-1:40 pm

Nonstop9h 20m

London Heathrow

Wed 4/30

9:50 am-11:35 am

Nonstop9h 45m

$597

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Fri 3/14

8:25 pm-1:10 pm

Nonstop9h 45m

London Heathrow

Mon 3/24

6:30 am-12:40 pm

1 stop13h 10m

$609

PortlandLondon

PDX - LHR

PDXLHR

Portland

Thu 5/1

7:40 pm-1:20 pm

1 stop33h 40m

London Heathrow

Thu 5/8

6:00 am-6:45 pm

2 stops20h 45m

$609

SeattleManchester

SEA - MAN

SEAMAN

Seattle/Tacoma Intl

Wed 3/19

7:15 am-7:00 am

1 stop16h 45m

Manchester

Wed 3/26

12:00 pm-10:22 pm

1 stop17h 22m

$610

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 3/9

6:45 pm-11:10 am

Nonstop9h 25m

London Heathrow

Tue 3/25

1:15 pm-4:15 pm

Nonstop10h 00m

$613

PortlandLondon

PDX - LHR

PDXLHR

Portland

Tue 3/11

7:35 am-7:20 am

1 stop16h 45m

London Heathrow

Tue 3/18

8:20 am-11:00 pm

1 stop21h 40m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

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

Have a flexible travel schedule? Discover the best time to fly to United Kingdom from Washington 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.

Travel insights for flights from Washington to United Kingdom

Get recent, data-driven insights about flights from Washington to United Kingdom including ideal travel times, pricing trends, and more.

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

Currently, November is the cheapest month in which you can book a flight from State of Washington to United Kingdom (average of $661). Flying from State of Washington to United Kingdom in June is currently the most expensive (average of $1,136). 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 WA to GB?

Find hourly flight availability from Washington 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 February 21, 2025.

When flying from State of Washington 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 State of Washington to United Kingdom

Explore weekly flight availability from Washington 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 February 21, 2025.

The most flights from USWA to GB0 are scheduled on a Wednesday (16 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (12 on average).

Rainfall in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in United Kingdom ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit United Kingdom when rainfall is around 1.6 in.

Temperature in United Kingdom by month

Plan your trip to United Kingdom by taking into account the average temperature totals by month.

If weather is an important factor for your trip to United Kingdom, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 February 21, 2025.
Read reviews from past customers who have flown Delta, KLM and Finnair from Washington to United Kingdom. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,213 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,213 reviews
Delta
8.0
Very good
8,213 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM
7.8
Good
1,331 reviews
Delta
8.0
Very good
8,213 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair
7.6
Good
1,273 reviews
Delta
8.0
Very good
8,213 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS
7.5
Good
1,568 reviews
Delta
8.0
Very good
8,213 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic
7.5
Good
654 reviews
Delta
8.0
Very good
8,213 reviews

Crew

8.5

Boarding

8.2

Comfort

8.0

Food

7.3

Overall

8.0

Entertainment

7.9

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Washington to United Kingdom. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    To fly one-way, consider booking your trip with WestJet, which is currently one of the cheapest options available, starting at $269. Icelandair flights start at $278 while deals on British Airways start at $412 one-way.

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

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

  • How can I find direct flights from Washington 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 to United Kingdom.

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

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

    Currently, November is the cheapest month in which you can book a flight from State of Washington to United Kingdom (average of $661). Flying from State of Washington to United Kingdom in June is currently the most expensive (average of $1,136). 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 Washington 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 to United Kingdom

Discover the top 10 airlines that operate flights from Washington 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 February 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$500Average$845FlexibilityNo cancel feeOn-time76%
LufthansaCheapest$519Average$899FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$568Average$949FlexibilityNo cancel feeOn-time71%
Aer LingusCheapest$579Average$969FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$583Average$752FlexibilityNo cancel feeOn-time77%
DeltaCheapest$584Average$1,029FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$586Average$1,113FlexibilityNo cancel feeOn-time70%
FinnairCheapest$586Average$762FlexibilityNo cancel feeOn-time76%
Air FranceCheapest$588Average$1,053FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$595Average$1,022FlexibilityNo cancel feeOn-time69%
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