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Cheap flights from Seattle to London Gatwick Airport from C$ 522

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 16/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

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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 28 October 2025.

Tue 4/112:35 p.m.SEA - LGW
1 stop12h 20mIcelandair
Fri 14/1111:55 a.m.LGW - SEA
1 stop13h 05mIcelandair
Deal found 28/10C$ 755
Fri 7/118:05 p.m.SEA - LGW
1 stop12h 05mMultiple Airlines
Fri 14/119:40 a.m.LGW - SEA
1 stop16h 40mMultiple Airlines
Deal found 28/10C$ 863
Tue 18/112:35 p.m.SEA - LGW
1 stop12h 20mIcelandair
Sun 23/1111:55 a.m.LGW - SEA
1 stop13h 05mIcelandair
Deal found 28/10C$ 881
Thu 6/112:35 p.m.SEA - LGW
1 stop12h 20mIcelandair
Thu 13/1111:55 a.m.LGW - SEA
1 stop13h 05mIcelandair
Deal found 26/10C$ 926
Tue 11/112:35 p.m.SEA - LGW
1 stop12h 20mIcelandair
Mon 17/1111:55 a.m.LGW - SEA
1 stop13h 05mIcelandair
Deal found 27/10C$ 957
Wed 3/123:25 p.m.SEA - LGW
2 stops18h 25mSWISS
Tue 20/16:40 p.m.LGW - SEA
2 stops34h 32mSWISS
Deal found 27/10C$ 958
Sun 16/1111:07 a.m.SEA - LGW
1 stop34h 53mMultiple Airlines
Tue 18/111:00 p.m.LGW - SEA
1 stop33h 50mMultiple Airlines
Deal found 27/10C$ 1,001
Thu 25/122:35 p.m.SEA - LGW
1 stop12h 20mIcelandair
Tue 13/111:55 a.m.LGW - SEA
1 stop13h 05mIcelandair
Deal found 28/10C$ 1,022
Mon 24/112:35 p.m.SEA - LGW
1 stop12h 20mIcelandair
Tue 2/1211:55 a.m.LGW - SEA
1 stop13h 05mIcelandair
Deal found 28/10C$ 1,029
Mon 8/127:00 p.m.SEA - LGW
1 stop37h 10mTurkish Airlines
Mon 15/126:20 a.m.LGW - SEA
1 stop18h 45mTurkish Airlines
Deal found 27/10C$ 1,036
Sun 30/112:35 p.m.SEA - LGW
1 stop12h 20mIcelandair
Sat 6/1211:55 a.m.LGW - SEA
1 stop13h 05mIcelandair
Deal found 28/10C$ 1,042
Sun 30/1111:26 a.m.SEA - LGW
2 stops15h 29mMultiple Airlines
Mon 8/1211:55 a.m.LGW - SEA
1 stop13h 05mMultiple Airlines
Deal found 27/10C$ 1,084

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 28 October 2025.

Round-trip from

C$ 754

One-way from

C$ 522

Popular in

June

Cheapest in

January

Average price

C$ 908
Icelandair
  • Icelandair
  • 24/3-31/3
  • 2 total stops
  • 25h 25m total
  • Seattle to London
Search Deals
16/3
  • 16/3
  • 1 total stop
  • 15h 05m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (C$ 199 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 40 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
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 28 October 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

Tue 24/3

3:35 p.m.-10:55 a.m.

1 stop12h 20m

London Gatwick

Tue 31/3

3:40 p.m.-8:45 p.m.

1 stop13h 05m

C$ 754

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 24/3

3:35 p.m.-10:55 a.m.

1 stop12h 20m

London Gatwick

Wed 1/4

3:40 p.m.-8:45 p.m.

1 stop13h 05m

C$ 776

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 23/3

3:35 p.m.-10:55 a.m.

1 stop12h 20m

London Gatwick

Fri 3/4

3:40 p.m.-8:45 p.m.

1 stop13h 05m

C$ 776

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 21/3

3:35 p.m.-10:55 a.m.

1 stop12h 20m

London Gatwick

Tue 31/3

3:40 p.m.-8:45 p.m.

1 stop13h 05m

C$ 897

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 21/3

3:35 p.m.-10:55 a.m.

1 stop12h 20m

London Gatwick

Fri 3/4

3:40 p.m.-8:45 p.m.

1 stop13h 05m

C$ 919

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 16/11

11:07 a.m.-6:00 a.m.

1 stop34h 53m

London Gatwick

Tue 18/11

1:00 p.m.-2:50 p.m.

1 stop33h 50m

C$ 1,001

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 3/12

7:55 a.m.-10:55 a.m.

2 stops19h 00m

London Gatwick

Mon 19/1

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

1 stop13h 05m

C$ 1,084

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 13/11

7:00 p.m.-4:10 p.m.

1 stop37h 10m

London Gatwick

Sun 16/11

5:05 p.m.-5:05 p.m.

1 stop32h 00m

C$ 1,098

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 3/12

7:00 p.m.-4:10 p.m.

1 stop37h 10m

London Gatwick

Mon 19/1

6:20 a.m.-5:05 p.m.

1 stop18h 45m

C$ 1,098

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 12/11

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

1 stop12h 20m

London Gatwick

Wed 19/11

11:55 a.m.-10:13 p.m.

2 stops18h 18m

C$ 1,098

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/10

Showing 1-10 of 23 results
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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, April is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of C$ 678). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of C$ 1,122). 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.

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 20m. Fly via Icelandair to get the fastest option. Seattle and London Gatwick Airport are separated by a distance of 7736 km.

  • 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, April is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of C$ 678). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of C$ 1,122). 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
Sutton
Hounslow
Slough
Marlow
Milton Keynes
Romford
Watford
Bedford
Luton
Gatwick

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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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