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Cheap flights from Seattle to London Gatwick Airport from C$ 498

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 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
13 Jul — 20 Jul1
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 13 June 2026.

Tue 8/91:30 p.m.
SEA
-
LGW
1 stop18h 30m
Virgin Atlantic
Tue 15/910:35 a.m.
LGW
-
SEA
2 stops20h 39m
Virgin Atlantic
Deal found 9/6C$ 1,219
Mon 6/77:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Wed 15/73:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 10/6C$ 1,220
Wed 14/107:00 a.m.
SEA
-
LGW
2 stops17h 25m
SWISS
Tue 20/109:25 a.m.
LGW
-
SEA
2 stops21h 31m
SWISS
Deal found 10/6C$ 1,222
Sun 5/77:00 p.m.
SEA
-
LGW
1 stop32h 45m
Icelandair
Thu 16/73:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 10/6C$ 1,223
Sun 6/96:45 p.m.
SEA
-
LGW
1 stop13h 15m
Delta
Mon 14/910:25 a.m.
LGW
-
SEA
1 stop32h 50m
Delta
Deal found 8/6C$ 1,225
Fri 3/711:25 p.m.
SEA
-
LGW
1 stop28h 20m
Icelandair
Thu 16/73:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 8/6C$ 1,226
Wed 9/99:30 a.m.
SEA
-
LGW
2 stops22h 30m
Delta
Tue 15/910:35 a.m.
LGW
-
SEA
2 stops20h 35m
Delta
Deal found 8/6C$ 1,227
Tue 8/93:30 p.m.
SEA
-
LGW
2 stops40h 30m
Delta
Thu 17/910:25 a.m.
LGW
-
SEA
1 stop15h 18m
Delta
Deal found 8/6C$ 1,229
Mon 7/99:59 a.m.
SEA
-
LGW
2 stops22h 01m
Virgin Atlantic
Mon 14/95:00 p.m.
LGW
-
SEA
1 stop26h 15m
Virgin Atlantic
Deal found 8/6C$ 1,232
Thu 17/97:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Thu 1/103:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 8/6C$ 1,233
Fri 18/97:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Sun 4/103:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 8/6C$ 1,234
Wed 19/811:05 a.m.
SEA
-
LGW
2 stops20h 55m
Virgin Atlantic
Fri 21/810:25 a.m.
LGW
-
SEA
2 stops20h 54m
Virgin Atlantic
Deal found 9/6C$ 1,237

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 13 June 2026.

Round-trip from

C$ 1,219

One-way from

C$ 498

Popular in

July

Cheapest in

August

Average price

C$ 1,331
Virgin Atlantic
  • Virgin Atlantic
  • 8/9-15/9
  • 3 total stops
  • 39h 09m total
  • Seattle to London
Search Deals
19/7
  • 19/7
  • 3 total stops
  • 28h 40m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (C$ 283 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 June 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 13 June 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

Tue 22/9

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

1 stop16h 45m

London Gatwick

Fri 25/9

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

1 stop13h 40m

C$ 1,297

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 2/8

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

1 stop11h 55m

London Gatwick

Fri 14/8

10:25 a.m.-5:34 p.m.

1 stop15h 09m

C$ 1,308

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 19/9

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

2 stops17h 20m

London Gatwick

Mon 5/10

9:25 a.m.-10:56 p.m.

2 stops21h 31m

C$ 1,364

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 26/9

6:00 a.m.-9:20 a.m.

2 stops19h 20m

London Gatwick

Mon 12/10

10:25 a.m.-10:26 p.m.

2 stops20h 01m

C$ 1,367

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 10/9

1:30 p.m.-2:45 p.m.

2 stops17h 15m

London Gatwick

Thu 24/9

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

1 stop13h 40m

C$ 1,455

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 17/8

6:10 p.m.-6:50 p.m.

1 stop16h 40m

London Gatwick

Tue 25/8

7:45 p.m.-8:32 p.m.

2 stops32h 47m

C$ 1,468

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 9/9

8:38 p.m.-6:50 p.m.

2 stops38h 12m

London Gatwick

Tue 6/10

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

1 stop13h 20m

C$ 1,471

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 17/9

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

1 stop16h 45m

London Gatwick

Wed 30/9

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

1 stop13h 20m

C$ 1,472
Quickest round-trip

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 19/9

6:00 p.m.-2:40 p.m.

1 stop12h 40m

London Gatwick

Fri 25/9

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

1 stop13h 40m

C$ 1,472

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 10/7

6:00 p.m.-6:50 p.m.

1 stop16h 50m

London Gatwick

Fri 17/7

10:20 a.m.-8:37 p.m.

2 stops18h 17m

C$ 1,482

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 24 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, August is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of C$ 721). Flying from Seattle to London Gatwick Airport in July is currently the most expensive (average of C$ 1,356). 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 16h 45m. Fly via Condor, SWISS, or Virgin Atlantic 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, August is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of C$ 721). Flying from Seattle to London Gatwick Airport in July is currently the most expensive (average of C$ 1,356). 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
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Hounslow
Slough
Marlow
Cobham
Watford
Luton
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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