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Cheap flights from Seattle to London Gatwick Airport from C$ 433

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 14/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
25 Aug — 1 Sep1
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 26 July 2026.

Sun 13/122:35 p.m.
SEA
-
LGW
1 stop12h 20m
Icelandair
Sun 10/111:55 a.m.
LGW
-
SEA
1 stop13h 05m
Icelandair
Deal found 21/7C$ 985
Sun 13/122:35 p.m.
SEA
-
LGW
1 stop12h 20m
Icelandair
Mon 11/111:55 a.m.
LGW
-
SEA
1 stop13h 05m
Icelandair
Deal found 21/7C$ 993
Mon 19/103:40 p.m.
SEA
-
LGW
2 stops16h 40m
Multiple Airlines
Mon 2/1111:55 a.m.
LGW
-
SEA
1 stop13h 05m
Multiple Airlines
Deal found 23/7C$ 1,005
Thu 24/122:35 p.m.
SEA
-
LGW
1 stop12h 20m
Icelandair
Tue 29/1211:55 a.m.
LGW
-
SEA
1 stop13h 05m
Icelandair
Deal found 21/7C$ 1,027
Mon 19/106:10 p.m.
SEA
-
LGW
1 stop16h 40m
Condor
Mon 2/1110:25 a.m.
LGW
-
SEA
1 stop13h 30m
Condor
Deal found 23/7C$ 1,031
Sun 15/112:35 p.m.
SEA
-
LGW
1 stop12h 20m
Icelandair
Sun 10/111:55 a.m.
LGW
-
SEA
1 stop13h 05m
Icelandair
Deal found 21/7C$ 1,036
Mon 12/107:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Sat 31/1011:55 a.m.
LGW
-
SEA
1 stop13h 05m
Icelandair
Deal found 21/7C$ 1,043
Mon 14/97:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Fri 2/103:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 24/7C$ 1,051
Sat 12/93:40 p.m.
SEA
-
LGW
1 stop14h 55m
Icelandair
Fri 6/1111:55 a.m.
LGW
-
SEA
1 stop13h 05m
Icelandair
Deal found 22/7C$ 1,053
Fri 11/911:25 p.m.
SEA
-
LGW
1 stop31h 10m
Icelandair
Sun 1/1111:55 a.m.
LGW
-
SEA
1 stop13h 05m
Icelandair
Deal found 22/7C$ 1,055
Fri 28/811:25 p.m.
SEA
-
LGW
1 stop28h 20m
Icelandair
Tue 8/91:00 p.m.
LGW
-
SEA
1 stop15h 40m
Icelandair
Deal found 25/7C$ 1,057
Sun 30/87:00 p.m.
SEA
-
LGW
1 stop32h 45m
Icelandair
Fri 4/93:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 21/7C$ 1,058

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 26 July 2026.

Round-trip from

C$ 985

One-way from

C$ 433

Popular in

July

Cheapest in

November

Average price

C$ 1,364
Icelandair
  • Icelandair
  • 13/12-10/1
  • 2 total stops
  • 25h 25m total
  • Seattle to London
Search Deals
Icelandair
  • Icelandair
  • 29/11
  • 1 total stop
  • 12h 20m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (C$ 515 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 55 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 26 July 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

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 19/8

7:00 p.m.-2:40 p.m.

1 stop11h 40m

London Gatwick

Wed 2/9

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

1 stop34h 15m

C$ 1,206

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 18/8

1:30 p.m.-9:25 a.m.

1 stop11h 55m

London Gatwick

Tue 25/8

10:35 a.m.-10:00 p.m.

2 stops19h 25m

C$ 1,299

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 9/11

11:15 a.m.-3:45 p.m.

2 stops20h 30m

London Gatwick

Mon 23/11

10:00 a.m.-10:04 p.m.

2 stops20h 04m

C$ 1,302

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 13/8

6:05 p.m.-6:50 p.m.

1 stop16h 45m

London Gatwick

Fri 28/8

10:20 a.m.-4:00 p.m.

1 stop13h 40m

C$ 1,305

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 20/9

5:40 p.m.-2:40 p.m.

1 stop13h 00m

London Gatwick

Wed 14/10

7:40 p.m.-4:00 p.m.

1 stop28h 20m

C$ 1,330

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 19/10

7:20 a.m.-9:40 a.m.

2 stops18h 20m

London Gatwick

Mon 2/11

10:00 a.m.-10:03 p.m.

2 stops20h 03m

C$ 1,405
Quickest round-trip

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 23/12

2:35 p.m.-10:55 a.m.

1 stop12h 20m

London Gatwick

Mon 4/1

11:55 a.m.-5:00 p.m.

1 stop13h 05m

C$ 1,467

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 21/12

2:35 p.m.-10:55 a.m.

1 stop12h 20m

London Gatwick

Wed 6/1

11:55 a.m.-5:00 p.m.

1 stop13h 05m

C$ 1,563

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 19/11

1:16 p.m.-9:10 a.m.

2 stops35h 54m

London Gatwick

Sat 28/11

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

1 stop31h 45m

C$ 1,578

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 16/11

5:50 p.m.-2:50 p.m.

1 stop13h 00m

London Gatwick

Sun 10/1

8:15 p.m.-3:55 p.m.

1 stop27h 40m

C$ 1,592

Flights are sorted by cheapest round-trip flights first.

Deals found on 24/7

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.

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 11h 40m. Fly via Icelandair, Virgin Atlantic, or Condor 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.

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
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Luton
Slough
Marlow
Cobham
Hounslow
Watford
High Wycombe

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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