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$286+ Cheap flights from Seattle (SEA) to Gatwick (LGW)

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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
mar. 30 — abr. 61
dom. 3/30
dom. 4/6
1 adult, Economy
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Cheap flight deals from Seattle to Gatwick

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Gatwick (LGW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated marzo 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$587
(FlightHub)

One-way from

$286
(oojo)

Popular in

June

Cheapest in

January

Average price

$688
Provider with most accurate pricing for Seattle/Tacoma Intl-London Gatwick flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-London Gatwick flights.
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From Seattle/Tacoma Intl to London Gatwick
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One-way flight from Seattle/Tacoma Intl to London Gatwick
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Highest demand for flights based on searches. 21% potential increase in price ($198 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($43 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Seattle to Gatwick

Cheapest flights from Seattle to Gatwick
Explore the most affordable flight options available from Seattle to Gatwick. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 25, 2025.

This FlightHub deal was found by Cheapflights users on 3/23. 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.
vie. 5/27:00 pmSEA - LGW
1 stop11h 40mIcelandair
mar. 5/63:40 pmLGW - SEA
1 stop13h 00mIcelandair
Deal found 3/23$587
This Mytrip deal was found by Cheapflights users on 3/24. 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.
mié. 4/303:45 pmSEA - LGW
1 stop12h 00mMultiple Airlines
dom. 5/49:50 amLGW - SEA
2 stops35h 08mMultiple Airlines
Deal found 3/24$589
This SWISS deal was found by Cheapflights users on 3/24. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/2312:45 pmSEA - LGW
2 stops21h 10mSWISS
mié. 5/76:35 pmLGW - SEA
2 stops31h 58mSWISS
Deal found 3/24$639
This American Airlines deal was found by Cheapflights users on 3/23. 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.
mar. 5/66:20 amSEA - LGW
2 stops18h 15mAmerican Airlines
mar. 5/1312:20 pmLGW - SEA
2 stops20h 25mAmerican Airlines
Deal found 3/23$641
This Virgin Atlantic deal was found by Cheapflights users on 3/24. 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.
mié. 8/1311:15 amSEA - LGW
1 stop14h 45mVirgin Atlantic
sáb. 8/2312:00 pmLGW - SEA
1 stop30h 45mVirgin Atlantic
Deal found 3/24$728
This Delta deal was found by Cheapflights users on 3/24. 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.
mar. 6/311:16 amSEA - LGW
1 stop14h 44mDelta
mar. 6/1012:00 pmLGW - SEA
1 stop18h 49mDelta
Deal found 3/24$733

Cheapflights Fare Finder

Customize your flight search to find flights from Seattle to Gatwick 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 marzo 25, 2025.
Use the filters below to find and compare flights from Seattle to London Gatwick Airport that are best for you.

Fly from

Seattle

Fly to

Gatwick

Route

Depart

Return

Price

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

vie. 5/2

7:00 pm-2:40 pm

1 stop11h 40m

London Gatwick

mar. 5/6

3:40 pm-8:40 pm

1 stop13h 00m

$587

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

mié. 4/30

3:45 pm-11:45 am

1 stop12h 00m

London Gatwick

dom. 5/4

9:50 am-12:58 pm

2 stops35h 08m

$589

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

mié. 4/23

12:45 pm-5:55 pm

2 stops21h 10m

London Gatwick

mié. 5/7

6:35 pm-6:33 pm

2 stops31h 58m

$639

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

mar. 5/6

6:20 am-8:35 am

2 stops18h 15m

London Gatwick

mar. 5/13

12:20 pm-12:45 am

2 stops20h 25m

$641

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

mar. 6/3

11:16 am-10:00 am

1 stop14h 44m

London Gatwick

mar. 6/10

12:00 pm-10:49 pm

1 stop18h 49m

$733

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

lun. 5/26

6:00 am-10:00 am

2 stops44h 00m

London Gatwick

mar. 6/10

12:00 pm-10:49 pm

1 stop18h 49m

$800

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

mié. 4/30

3:45 pm-2:40 pm

1 stop14h 55m

$286

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

lun. 4/28

8:56 pm-6:20 am

3 stops25h 24m

$292

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

dom. 6/15

3:39 pm-9:25 am

3 stops33h 46m

$386

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

vie. 4/25

10:50 am-5:50 pm

2 stops23h 00m

$491

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Compare providers for flights from Seattle to Gatwick

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Gatwick in March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
FlightnetworkPrice Accuracy-Trust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-London Gatwick Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-London Gatwick Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-London Gatwick Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-London Gatwick Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-London Gatwick Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Gatwick

Have a flexible travel schedule? Discover the best time to fly to Gatwick from Seattle 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 Seattle to London Gatwick Airport

How far ahead should I book a flight from Seattle to London Gatwick Airport?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Gatwick. Price data was last updated on March 21, 2025.

Booking 27 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to London Gatwick Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Seattle to London Gatwick Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of $566). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of $813). 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 SEA to LGW?

Find hourly flight availability from Seattle to Gatwick. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated marzo 25, 2025.

It’s optimal to fly from Seattle to London Gatwick Airport at noon. By choosing this option you can save up to 39% on the cost of your flight, compared to a flight in the morning.

Rainfall in Gatwick by month

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

In terms of precipitation, rainfall in London Gatwick Airport 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 London Gatwick Airport when rainfall is around 1.6 in.

Temperature in Gatwick by month

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

If weather is an important factor for your trip to London Gatwick Airport, 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 Gatwick

Get insights into the airlines that provide service to Gatwick. 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 Gatwick. Reviews last updated marzo 25, 2025.
Read through reviews of airlines operating flights from Seattle to London, such as Delta, KLM and SWISS. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

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
7,890 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

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
1,318 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

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
1,569 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

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
1,423 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

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.
JetBlue
7.3
Good
2,924 reviews
Delta
8.0
Very good
7,890 reviews

Overall

8.0

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

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 Seattle to Gatwick. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Seattle to London Gatwick?

    Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to London Gatwick. You should not have trouble finding flights to London Gatwick from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to London Gatwick per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Seattle airport to London Gatwick. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.

  • What are the cheapest airlines flying from Seattle to London Gatwick Airport round-trip?

    Flying on Icelandair is currently your cheapest option to London Gatwick Airport, with prices starting at $587. Additional round-trip tickets that might be worth considering are offered by SWISS and American Airlines, with the lowest prices starting at $639 and $641, respectively. Icelandair is 20% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to London Gatwick Airport one-way?

    One-way options have recently been found by users for as low as $286 on Icelandair. Other airlines that offer cheap prices include WestJet from $386 and American Airlines from $489 one-way.

  • Can I find deals for flights from Seattle to Gatwick that include hotel bookings?

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

  • How can I find direct flights from Seattle to Gatwick?

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

  • Can I find deals for business class flights from Seattle to Gatwick?

    Yes. Cheapflights offers flight deals from Seattle to Gatwick 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 Seattle to London Gatwick Airport?

    Currently, January is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of $566). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of $813). 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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Top airline flying from Seattle to Gatwick

Discover the top airline that operate flights from Seattle to Gatwick. 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 marzo 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest$512Average$681FlexibilityNo cancel feeOn-time76%
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