Find flights
When to book
Airlines
FAQs

Cheap flights from London Gatwick Airport to Seattle from £432

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SEA
27 Jul — 3 Aug1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Gatwick to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Gatwick to Seattle
Explore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 June 2026.

Thu 1/1010:20
LGW
-
SEA
1 stop13h 40m
Condor
Sun 11/1017:40
SEA
-
LGW
1 stop17h 10m
Condor
Deal found 26/6£466
Wed 30/909:25
LGW
-
SEA
2 stops17h 07m
SWISS
Wed 7/1007:00
SEA
-
LGW
2 stops17h 25m
SWISS
Deal found 25/6£469
Sun 4/1015:40
LGW
-
SEA
1 stop34h 15m
Icelandair
Fri 9/1015:40
SEA
-
LGW
1 stop15h 00m
Icelandair
Deal found 26/6£470
Fri 21/821:25
LGW
-
SEA
3 stops44h 15m
Multiple Airlines
Mon 31/815:40
SEA
-
LGW
2 stops21h 15m
Multiple Airlines
Deal found 26/6£476
Fri 3/710:25
LGW
-
SEA
1 stop15h 02m
Air France
Fri 10/713:30
SEA
-
LGW
1 stop11h 55m
Air France
Deal found 23/6£484
Sat 27/617:00
LGW
-
SEA
1 stop26h 15m
Virgin Atlantic
Fri 10/713:30
SEA
-
LGW
1 stop11h 55m
Virgin Atlantic
Deal found 24/6£493
Mon 29/617:00
LGW
-
SEA
1 stop26h 15m
Virgin Atlantic
Mon 13/713:30
SEA
-
LGW
1 stop12h 10m
Virgin Atlantic
Deal found 22/6£496
Mon 29/617:00
LGW
-
SEA
1 stop26h 15m
Virgin Atlantic
Sun 12/713:30
SEA
-
LGW
1 stop18h 30m
Virgin Atlantic
Deal found 22/6£497
Mon 29/610:25
LGW
-
SEA
1 stop32h 50m
Virgin Atlantic
Wed 8/713:30
SEA
-
LGW
1 stop11h 55m
Virgin Atlantic
Deal found 22/6£498
Sat 4/710:25
LGW
-
SEA
1 stop15h 02m
Delta
Fri 10/713:30
SEA
-
LGW
1 stop11h 55m
Delta
Deal found 24/6£499

Find flight deals from Gatwick to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Seattle (SEA). 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 27 June 2026.

Round-trip from

£466

One-way from

£432

Popular in

May

Cheapest in

January

Average price

£564
Condor
  • Condor
  • 1/10-11/10
  • 2 total stops
  • 30h 50m total
  • London to Seattle
Search Deals
Iberia
  • Iberia
  • 15/12
  • 2 total stops
  • 30h 40m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£74 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Gatwick to Seattle 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 858,174 searches. Data last updated 27 June 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 31/8

09:25-18:32

2 stops17h 07m

Seattle/Tacoma Intl

Tue 15/9

07:00-08:25

2 stops17h 25m

£538

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 7/10

09:25-18:32

2 stops17h 07m

Seattle/Tacoma Intl

Fri 23/10

13:19-17:50

2 stops20h 31m

£572

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 14/8

09:25-20:43

2 stops19h 18m

Seattle/Tacoma Intl

Thu 27/8

07:00-08:25

2 stops17h 25m

£592

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 31/8

10:25-17:34

1 stop15h 09m

Seattle/Tacoma Intl

Tue 15/9

13:30-09:25

1 stop11h 55m

£625

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 15/7

10:20-15:40

1 stop13h 20m

Seattle/Tacoma Intl

Mon 20/7

18:10-18:50

1 stop16h 40m

£695

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 15/7

22:00-21:00

3 stops31h 00m

Seattle/Tacoma Intl

Mon 20/7

15:40-17:55

2 stops18h 15m

£719

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 5/9

10:20-16:00

1 stop13h 40m

Seattle/Tacoma Intl

Wed 9/9

12:05-14:45

2 stops18h 40m

£741
Fastest return journey

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 28/7

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Mon 4/1

14:35-10:55

1 stop12h 20m

£744

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 5/9

10:20-16:00

1 stop13h 40m

Seattle/Tacoma Intl

Sat 12/9

17:50-18:50

2 stops41h 00m

£745

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 15/8

09:25-18:32

2 stops17h 07m

Seattle/Tacoma Intl

Sat 29/8

07:00-08:20

2 stops17h 20m

£747

Flights are sorted by cheapest return flights first.

Deals found on 21/6

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Gatwick to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Gatwick with our price prediction graph.
Estimated return 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 Gatwick Airport to Seattle

How much does it cost for a return flight from London Gatwick Airport to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated 27 June 2026.
Get a feel of what it's like to fly with Icelandair from London Gatwick Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Icelandair
7.0
Good
690 reviews
Check prices

Crew

8.0

Comfort

6.9

Food

6.2

Entertainment

6.9

Overall

7.0

Boarding

7.2

Reviews

1 / 20
4.0
Okay

Daniel,May 2026

LHR - KEF

We had to change flights in Reykjavik and the outgoing flight was send to gate D23, where there were NO SEATS in the lounge. And in general, there were not enough seats for transferring passengers in general. After the three hour flight from London and then expecting a 7 hour flight to Seattle, having to stand & mill around for over an hour was rather unpleasant. We had booked Business Class and were assigned seats in the bulkhead seats, row 1. This made a MOST unpleasant 7 hour flight from Reykjavik to Seattle. The flight attendants had stored some of their carry-ons in the overhead bin just above us so it left us little room to place our carry-ons that was convenient. The seats in Business Class are too deep for shorter people and without ANY form of leg rest/support, we struggled to be comfortable for the entire flight.
Icelandair
7.0
Good
690 reviews
Icelandair
7.0
Good
690 reviews
Check prices

Crew

8.0

Comfort

6.9

Food

6.2

Entertainment

6.9

Overall

7.0

Boarding

7.2

Reviews

1 / 20
4.0
Okay

Daniel,May 2026

LHR - KEF

We had to change flights in Reykjavik and the outgoing flight was send to gate D23, where there were NO SEATS in the lounge. And in general, there were not enough seats for transferring passengers in general. After the three hour flight from London and then expecting a 7 hour flight to Seattle, having to stand & mill around for over an hour was rather unpleasant. We had booked Business Class and were assigned seats in the bulkhead seats, row 1. This made a MOST unpleasant 7 hour flight from Reykjavik to Seattle. The flight attendants had stored some of their carry-ons in the overhead bin just above us so it left us little room to place our carry-ons that was convenient. The seats in Business Class are too deep for shorter people and without ANY form of leg rest/support, we struggled to be comfortable for the entire flight.

Related info for your journey

Find useful and relevant information for your journey from Gatwick to Seattle. 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 into for flights to Seattle from London Gatwick?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from London Gatwick to Seattle. 1 airline have flights to Seattle/Tacoma Intl from London Gatwick on a regular basis. Booking flights from London Gatwick to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from London Gatwick per day.

  • How long is the flight from London Gatwick Airport to Seattle?

    A quick flight from London Gatwick Airport to Seattle can take about 13h 20m. SWISS provides one of the quickest options available for as low as £695. London Gatwick Airport and Seattle are separated by a distance of 4807 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What is the cheapest airline to fly from London Gatwick Airport to Seattle round-trip?

    Flying on Icelandair is currently your cheapest option to Seattle, with prices starting at £400. Icelandair is priced at 26% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Gatwick to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Federal Way
SeaTac

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 airline flying from Gatwick to Seattle

Discover the top airline that operate flights from Gatwick to Seattle. 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 858,174 searches. Data last updated 27 June 2026.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£400Average£533FlexibilityNo cancel feeOn-time76%
Search Icelandair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Gatwick to Seattle?

When you search for this flight from Gatwick to Seattle, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Gatwick to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Gatwick to Seattle by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Gatwick to Seattle with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Gatwick to Seattle, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Gatwick to Seattle become cheaper?

Of course! You can now track prices for flights from Gatwick to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.