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Cheap flights from Seattle to London Gatwick Airport from C$ 553

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 26/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
11 Nis — 18 Nis1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Gatwick

Enter your travel dates to find the best prices.

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 12 Mart 2026.

Cum 17/47:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Pzt 27/43:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 9/3C$ 865
Per 16/47:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Cum 24/43:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 10/3C$ 866
Pzt 4/53:40 p.m.
SEA
-
LGW
1 stop12h 05m
Icelandair
Sal 12/51:00 p.m.
LGW
-
SEA
1 stop15h 40m
Icelandair
Deal found 9/3C$ 868
Çar 19/83:40 p.m.
SEA
-
LGW
1 stop12h 05m
Icelandair
Çar 2/93:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 10/3C$ 869
Cum 17/47:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Sal 12/53:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 9/3C$ 876
Sal 1/97:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Per 10/93:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 10/3C$ 884
Çar 29/77:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Sal 25/83:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 10/3C$ 887
Sal 4/811:25 p.m.
SEA
-
LGW
1 stop28h 20m
Icelandair
Sal 25/83:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 8/3C$ 888
Sal 11/87:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Pzt 24/83:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 9/3C$ 889
Cmt 18/47:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Cmt 25/43:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 9/3C$ 891
Çar 2/93:40 p.m.
SEA
-
LGW
1 stop12h 05m
Icelandair
Paz 6/93:40 p.m.
LGW
-
SEA
1 stop28h 05m
Icelandair
Deal found 10/3C$ 892
Cum 14/811:25 p.m.
SEA
-
LGW
1 stop28h 20m
Icelandair
Çar 26/83:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 10/3C$ 893

Find 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 12 Mart 2026.

Round-trip from

C$ 865

One-way from

C$ 553

Popular in

June

Cheapest in

November

Average price

C$ 873
Icelandair
  • Icelandair
  • 17/4-27/4
  • 2 total stops
  • 24h 40m total
  • Seattle to London
Search Deals
Icelandair
  • Icelandair
  • 26/4
  • 1 total stop
  • 32h 45m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 225 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 629,999 searches. Data last updated 12 Mart 2026.
Use the filters below to find and compare flights from Seattle to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Pzt 4/5

3:40 p.m.-11:45 a.m.

1 stop12h 05m

London Gatwick

Çar 13/5

3:40 p.m.-8:40 p.m.

1 stop13h 00m

C$ 887

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Pzt 4/5

3:40 p.m.-11:45 a.m.

1 stop12h 05m

London Gatwick

Paz 10/5

3:40 p.m.-5:55 p.m.

1 stop34h 15m

C$ 888

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sal 18/8

11:25 p.m.-2:40 p.m.

1 stop31h 15m

London Gatwick

Paz 30/8

3:40 p.m.-11:45 a.m.

1 stop28h 05m

C$ 960

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Pzt 4/5

3:40 p.m.-11:45 a.m.

1 stop12h 05m

London Gatwick

Cmt 9/5

3:40 p.m.-8:40 p.m.

1 stop13h 00m

C$ 1,006

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Pzt 4/5

7:00 a.m.-8:20 a.m.

2 stops17h 20m

London Gatwick

Pzt 11/5

9:25 a.m.-6:30 p.m.

2 stops17h 05m

C$ 1,037

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sal 18/8

6:40 p.m.-4:00 p.m.

1 stop13h 20m

London Gatwick

Pzt 5/10

10:25 a.m.-7:23 p.m.

2 stops40h 58m

C$ 1,064

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Per 16/4

8:42 a.m.-4:45 p.m.

2 stops48h 03m

London Gatwick

Paz 19/4

2:05 p.m.-5:15 p.m.

1 stop35h 10m

C$ 1,170

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Cmt 28/3

6:40 p.m.-4:00 p.m.

1 stop13h 20m

London Gatwick

Cmt 4/4

10:25 a.m.-5:38 p.m.

1 stop15h 13m

C$ 1,237

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sal 21/4

10:48 a.m.-8:25 a.m.

2 stops37h 37m

London Gatwick

Sal 28/4

9:25 a.m.-10:42 p.m.

2 stops21h 17m

C$ 1,265

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Çar 2/9

11:31 a.m.-2:45 p.m.

2 stops19h 14m

London Gatwick

Çar 9/9

10:20 a.m.-3:40 p.m.

1 stop13h 20m

C$ 1,375

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 23 resultsSorted by cheapest first
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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

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

Currently, February is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of C$ 671). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of C$ 1,089). 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.

How much does it cost to fly round-trip from Seattle to London Gatwick Airport?

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 0 airlines have flights from the Seattle airport to London Gatwick. It is only a 18.4 km journey to Seattle/Tacoma Intl (SEA) from Seattle’s city centre.

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

    There are many flights that can get you from Seattle to London Gatwick Airport in 12h 05m. Fly via Icelandair or SWISS to get the fastest option. Seattle and London Gatwick Airport are separated by a distance of 7736 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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, February is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of C$ 671). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of C$ 1,089). 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

Travelling to a place near London Gatwick Airport?

Book flights to London Gatwick Airport if you plan to visit one of these locations
Twickenham
Sutton
Gatwick
Slough
Marlow
Cobham
Romford
Watford
Bedford
Luton
High Wycombe
Hounslow

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Gatwick

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Heathrow flights

Fly with Cheapflights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Seattle to Gatwick. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights simply makes it quick and affordable to book flights from Seattle to Gatwick 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 Seattle to Gatwick with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Seattle to Gatwick flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on Seattle to Gatwick flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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