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Cheap flights from Seattle to London Gatwick Airport from C$ 538

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 1/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
26 Feb — 5 Mar1
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 27 January 2026.

Wed 4/32:35 p.m.
SEA
-
LGW
1 stop12h 20m
Icelandair
Sun 8/311:55 a.m.
LGW
-
SEA
1 stop13h 05m
Icelandair
Deal found 26/1C$ 753
Fri 1/57:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Sat 16/53:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 27/1C$ 776
Fri 17/47:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Tue 28/41:00 p.m.
LGW
-
SEA
1 stop12h 55m
Icelandair
Deal found 27/1C$ 778
Tue 28/47:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Tue 5/51:00 p.m.
LGW
-
SEA
1 stop12h 55m
Icelandair
Deal found 27/1C$ 789
Fri 1/57:00 p.m.
SEA
-
LGW
1 stop11h 40m
Icelandair
Mon 11/53:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 27/1C$ 800
Fri 6/32:35 p.m.
SEA
-
LGW
1 stop12h 20m
Icelandair
Tue 10/311:55 a.m.
LGW
-
SEA
1 stop13h 05m
Icelandair
Deal found 26/1C$ 805
Tue 24/33:35 p.m.
SEA
-
LGW
1 stop12h 20m
Icelandair
Wed 1/43:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 26/1C$ 827
Wed 8/43:40 p.m.
SEA
-
LGW
1 stop15h 00m
Icelandair
Wed 6/53:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 27/1C$ 845
Wed 1/43:40 p.m.
SEA
-
LGW
1 stop15h 00m
Icelandair
Tue 5/53:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 26/1C$ 846
Mon 23/33:35 p.m.
SEA
-
LGW
1 stop12h 20m
Icelandair
Tue 31/33:40 p.m.
LGW
-
SEA
1 stop13h 00m
Icelandair
Deal found 25/1C$ 859
Sun 19/71:30 p.m.
SEA
-
LGW
1 stop11h 55m
Delta
Thu 17/910:25 a.m.
LGW
-
SEA
1 stop15h 18m
Delta
Deal found 26/1C$ 876
Sun 19/46:40 p.m.
SEA
-
LGW
1 stop13h 10m
Delta
Thu 30/410:25 a.m.
LGW
-
SEA
1 stop15h 13m
Delta
Deal found 27/1C$ 879

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 27 January 2026.

Round-trip from

C$ 753

One-way from

C$ 538

Popular in

June

Cheapest in

November

Average price

C$ 741
Icelandair
  • Icelandair
  • 4/3-8/3
  • 2 total stops
  • 25h 25m total
  • Seattle to London
Search Deals
1/3
  • 1/3
  • 1 total stop
  • 14h 55m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 148 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 27 January 2026.
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

Sat 16/5

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

1 stop12h 05m

London Gatwick

Fri 29/5

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

1 stop13h 00m

C$ 976

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 19/2

2:44 p.m.-6:00 a.m.

1 stop31h 16m

London Gatwick

Wed 25/2

1:00 p.m.-10:12 p.m.

1 stop17h 12m

C$ 1,023

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 23/2

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

1 stop12h 20m

London Gatwick

Fri 27/2

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

1 stop13h 05m

C$ 1,050

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 18/5

9:55 a.m.-5:50 p.m.

2 stops23h 55m

London Gatwick

Fri 29/5

9:25 a.m.-10:46 p.m.

2 stops21h 21m

C$ 1,175

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 18/5

9:55 a.m.-5:50 p.m.

2 stops23h 55m

London Gatwick

Sun 31/5

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

2 stops17h 05m

C$ 1,205

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 25/3

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

1 stop12h 20m

London Gatwick

Tue 31/3

3:40 p.m.-1:53 p.m.

2 stops54h 13m

C$ 1,205

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 23/3

8:11 p.m.-10:55 a.m.

2 stops31h 44m

London Gatwick

Tue 31/3

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

1 stop13h 00m

C$ 1,210

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 22/3

8:00 p.m.-9:20 a.m.

1 stop30h 20m

London Gatwick

Tue 31/3

5:35 p.m.-5:15 p.m.

1 stop31h 40m

C$ 1,260

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 5/7

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

1 stop11h 40m

London Gatwick

Fri 17/7

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

1 stop13h 00m

C$ 1,283

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 2/7

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

1 stop11h 40m

London Gatwick

Fri 17/7

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

1 stop13h 00m

C$ 1,295

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/1

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, May is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of C$ 675). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of C$ 1,098). 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 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, May is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of C$ 675). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of C$ 1,098). 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
Twickenham
Gatwick
Slough
Marlow
Cobham
Milton Keynes
Romford
Bedford
Watford
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?

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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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