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$285+ 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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LHR
May 5 — May 121
Mon 5/5
Mon 5/12
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 April 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$622
(oojo)

One-way from

$285
(oojo)

Popular in

June

Cheapest in

October

Average price

$684

Good round-trip deal

$738 or less

Good one-way deal

$492 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. 18% potential increase in price ($178 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 30, 2025.

This FlightHub deal was found by Cheapflights users on 4/29. 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 8/244:00 pmSEA - EDI
1 stop18h 10mScandinavian Airlines
Mon 9/17:45 pmEDI - SEA
2 stops50h 05mScandinavian Airlines
Deal found 4/29$619
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/137:00 pmSEA - LGW
1 stop11h 40mIcelandair
Mon 9/223:40 pmLGW - SEA
1 stop13h 00mIcelandair
Deal found 4/28$620
This oojo deal was found by Cheapflights users on 4/27. 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.
Sat 8/2311:30 pmSEA - LHR
1 stop12h 50mIcelandair
Sun 9/79:25 pmLHR - SEA
1 stop22h 00mIcelandair
Deal found 4/27$624
This Delta deal was found by Cheapflights users on 4/29. 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 10/11:30 pmSEA - LHR
1 stop12h 20mDelta
Wed 10/155:25 pmLHR - SEA
Nonstop10h 25mDelta
Deal found 4/29$628
This Scandinavian Airlines deal was found by Cheapflights users on 4/28. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/244:20 pmSEA - LHR
1 stop33h 00mScandinavian Airlines
Wed 10/156:40 amLHR - SEA
1 stop15h 20mScandinavian Airlines
Deal found 4/28$629
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/193:20 pmPDX - LGW
1 stop15h 20mIcelandair
Fri 9/263:40 pmLGW - PDX
1 stop34h 15mIcelandair
Deal found 4/28$630
This oojo deal was found by Cheapflights users on 4/28. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/193:20 pmPDX - LHR
1 stop12h 35mIcelandair
Fri 9/261:05 pmLHR - PDX
1 stop12h 50mIcelandair
Deal found 4/28$632
This oojo deal was found by Cheapflights users on 4/29. 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 9/307:00 pmSEA - GLA
1 stop10h 25mIcelandair
Tue 10/142:20 pmGLA - SEA
1 stop11h 30mIcelandair
Deal found 4/29$639
This Iberia deal was found by Cheapflights users on 4/29. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/127:25 pmPDX - LHR
Nonstop9h 35mIberia
Mon 10/277:05 pmLHR - PDX
2 stops22h 26mIberia
Deal found 4/29$654
This Gotogate deal was found by Cheapflights users on 4/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/136:15 amPDX - LHR
2 stops19h 20mMultiple Airlines
Wed 10/228:40 amLHR - PDX
2 stops18h 06mMultiple Airlines
Deal found 4/28$656
This World Air Fares deal was found by Cheapflights users on 4/29. 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.
Sun 11/92:07 pmSEA - LHR
1 stop13h 08mMultiple Airlines
Wed 11/198:55 amLHR - SEA
2 stops21h 34mMultiple Airlines
Deal found 4/29$660
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/301:30 pmSEA - GLA
1 stop13h 15mAmerican Airlines
Mon 10/133:25 pmGLA - SEA
1 stop27h 45mAmerican Airlines
Deal found 4/29$667

Cheapflights Fare Finder

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 April 30, 2025.
Use the filters below to find and compare flights from Washington to the United Kingdom that are best for you.

Fly from

Washington

Fly to

United Kingdom

Route

Depart

Return

Price

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 7/27

7:00 pm-11:45 am

1 stop32h 45m

London Gatwick

Thu 8/28

1:00 pm-5:50 pm

1 stop12h 50m

$622

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sun 7/27

3:45 pm-11:55 am

1 stop12h 10m

London Heathrow

Thu 8/28

9:25 pm-11:25 am

1 stop22h 00m

$624

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Wed 5/21

4:00 pm-9:40 pm

1 stop21h 40m

London Heathrow

Mon 5/26

6:40 am-1:50 pm

1 stop15h 10m

$629

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 9/30

7:00 pm-1:25 pm

1 stop10h 25m

Glasgow Intl

Tue 10/14

2:20 pm-5:50 pm

1 stop11h 30m

$639

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Tue 9/30

1:30 pm-10:45 am

1 stop13h 15m

Glasgow Intl

Mon 10/13

3:25 pm-11:10 am

1 stop27h 45m

$667

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Sun 7/20

5:35 am-9:30 pm

3 stops31h 55m

London Luton

Mon 7/28

9:55 pm-2:16 pm

2 stops24h 21m

$677

PortlandLondon

PDX - LHR

PDXLHR

Portland

Sat 7/26

1:25 pm-8:00 pm

1 stop22h 35m

London Heathrow

Sun 8/24

6:15 am-2:37 pm

2 stops16h 22m

$680

SeattleGlasgow

SEA - GLA

SEAGLA

Seattle/Tacoma Intl

Wed 9/10

3:13 pm-11:15 pm

2 stops24h 02m

Glasgow Intl

Thu 9/25

4:25 pm-11:35 am

1 stop27h 10m

$681

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Sun 7/20

5:35 am-10:35 am

3 stops21h 00m

London Stansted

Mon 7/28

10:00 pm-8:41 pm

2 stops30h 41m

$683

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Mon 5/12

3:45 pm-11:55 am

1 stop12h 10m

London Heathrow

Tue 5/20

3:05 pm-10:47 pm

2 stops39h 42m

$688

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

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.

Cheapflights Insights

Everything you need to know about your flight from Washington to the United Kingdom

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 $1,110). 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 April 30, 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 April 30, 2025.

The most flights from USWA to GB0 are scheduled on a Monday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 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 April 30, 2025.
Read reviews from past customers who have flown Delta, KLM and SWISS 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
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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
1,588 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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.
Air France
7.4
Good
1,446 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,929 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Food

7.3

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 Icelandair, which is currently one of the cheapest options available, starting at $285. WestJet flights start at $364 while deals on Delta start at $378 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 $1,110). 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 to United Kingdom

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Gatwick flights
Newark to Leonardo da Vinci/Fiumicino flights
Newark to Athens flights
John F Kennedy Intl to Lisbon flights
LaGuardia to Heathrow flights
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Newark to Lisbon flights
John F Kennedy Intl to Malpensa flights
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Miami to Madrid flights
John F Kennedy Intl to Barcelona-El Prat flights
San Francisco to Heathrow flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Seattle to Heathrow flights
Dulles Intl to Charles de Gaulle flights
LaGuardia to Leonardo da Vinci/Fiumicino flights
O'Hare Intl to Athens flights
Boston to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Madrid flights
Newark to Madrid flights
Newark to Malpensa flights
O'Hare Intl to Heathrow flights
Baltimore to Heathrow flights
O'Hare Intl to Charles de Gaulle flights
LaGuardia to Gatwick flights
Dallas/Fort Worth to Heathrow flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Newark to Dublin flights
John F Kennedy Intl to Dublin flights
Boston to Charles de Gaulle flights
LaGuardia to Athens flights
Dallas/Fort Worth to Charles de Gaulle flights
Boston to Gatwick flights
Newark to London City flights
San Francisco to Leonardo da Vinci/Fiumicino flights
Atlanta to Heathrow flights

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 April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$378Average$909FlexibilityNo cancel feeOn-time76%
IcelandairCheapest$500Average$828FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$550Average$1,003FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$568Average$885FlexibilityNo cancel feeOn-time71%
IberiaCheapest$579Average$732FlexibilityNo cancel feeOn-time77%
Aer LingusCheapest$583Average$966FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$584Average$789FlexibilityNo cancel feeOn-time77%
DeltaCheapest$584Average$994FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$585Average$921FlexibilityNo cancel feeOn-time70%
Virgin AtlanticCheapest$595Average$963FlexibilityNo cancel feeOn-time72%

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