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

For as low as £372, Icelandair can have you in London Gatwick Airport from Seattle in 11h 40m. The distance from Seattle to London Gatwick Airport is about 4807 mi.

In terms of precipitation, rainfall in London Gatwick Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Gatwick Airport when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London Gatwick Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

How far in advance should I book a flight from Seattle to London Gatwick Airport?

Travelers have found it’s best to book a flight 51 days in advance to save up to 45% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 51 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Seattle to London Gatwick Airport 1-2 weeks in advance for as low as £474, or £698 for flights within the next 24 hours.

What is the cheapest month to fly from Seattle to London Gatwick Airport?

Our data shows that October tends to be the cheapest month to fly to London Gatwick Airport from Seattle. Users have commonly found prices around £561 for the month, but tickets can be as low as £383. Due to multiple factors, prepare for potentially higher prices in June.

What is the cheapest time of day to fly from SEA to LGW?

When flying from Seattle to London Gatwick Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What airport do you fly from for flights from Seattle to London Gatwick?

Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to London Gatwick. On average, Seattle/Tacoma Intl has 0 outbound flights to London Gatwick per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

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 holiday 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.

£192+ Flights from Seattle to London Gatwick Airport

Cheap flight deals from Seattle to Gatwick

Round-trip from	£371
One-way from	£192
Popular in	June
Cheapest in	January
Average price	£498

Icelandair
29/9-8/10
2 total stops
45h 45m total
Seattle to London

Search Deals

26/9
1 total stop
16h 45m total
Seattle to London

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£42 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2025

Search Deals

Find flight deals from Seattle to Gatwick

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 29 August 2025.

Mon 29/919:00SEA - LGW

1 stop11h 35mIcelandair

Wed 8/1015:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 28/8£371

Wed 24/919:00SEA - LGW

1 stop11h 40mIcelandair

Wed 15/1015:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 26/8£372

Wed 10/919:00SEA - LGW

1 stop11h 40mIcelandair

Thu 25/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 27/8£374

Sun 14/919:00SEA - LGW

1 stop11h 40mIcelandair

Thu 18/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 28/8£375

Thu 16/1019:00SEA - LGW

1 stop11h 40mIcelandair

Mon 3/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 28/8£375

Thu 23/1019:00SEA - LGW

1 stop11h 40mIcelandair

Sun 2/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 27/8£376

Sat 13/919:00SEA - LGW

1 stop11h 35mIcelandair

Mon 29/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 28/8£377

Tue 25/1114:35SEA - LGW

1 stop12h 20mIcelandair

Thu 4/1211:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 28/8£378

Sun 7/923:30SEA - LGW

1 stop31h 05mIcelandair

Fri 12/915:40LGW - SEA

1 stop27h 45mIcelandair

Deal found 27/8£379

Wed 24/919:00SEA - LGW

1 stop11h 40mIcelandair

Tue 7/1015:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 27/8£381

Tue 11/1114:35SEA - LGW

1 stop12h 20mIcelandair

Sun 23/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 27/8£383

Sun 5/1015:45SEA - LGW

1 stop14h 55mIcelandair

Mon 27/1014:40LGW - SEA

1 stop34h 20mIcelandair

Deal found 27/8£384

Best flights from Seattle to Gatwick
Discover carefully curated flight deals from Seattle to Gatwick that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 29 August 2025.

Wed 24/919:00SEA - LGW

1 stop11h 40mIcelandair

Wed 15/1015:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 26/8£372

Wed 10/919:00SEA - LGW

1 stop11h 40mIcelandair

Thu 25/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 27/8£374

Thu 25/919:00SEA - LGW

1 stop11h 40mIcelandair

Mon 29/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 27/8£375

Mon 22/919:00SEA - LGW

1 stop11h 35mIcelandair

Fri 26/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 28/8£375

Thu 13/1114:35SEA - LGW

1 stop12h 20mIcelandair

Mon 17/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 27/8£375

Thu 16/1019:00SEA - LGW

1 stop11h 40mIcelandair

Mon 3/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 27/8£375

Thu 23/1019:00SEA - LGW

1 stop11h 40mIcelandair

Sun 2/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 28/8£376

Fri 12/1214:35SEA - LGW

1 stop12h 20mIcelandair

Fri 9/111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 26/8£377

Thu 5/214:35SEA - LGW

1 stop12h 20mIcelandair

Wed 18/211:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 28/8£378

Sat 15/1114:35SEA - LGW

1 stop12h 20mIcelandair

Sun 23/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 27/8£378

Tue 25/1114:35SEA - LGW

1 stop12h 20mIcelandair

Fri 5/1211:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 26/8£378

Fri 14/1114:35SEA - LGW

1 stop12h 20mIcelandair

Mon 24/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 27/8£378

Last-minute flights from Seattle to Gatwick
Discover last-minute flight deals from Seattle to Gatwick. Data last updated 29 August 2025 and is based on user searches.

Sun 7/923:30SEA - LGW

1 stop31h 05mIcelandair

Fri 12/915:40LGW - SEA

1 stop27h 45mIcelandair

Deal found 27/8£379

Wed 10/919:00SEA - LGW

1 stop11h 40mIcelandair

Thu 25/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 27/8£374

Wed 10/923:30SEA - LGW

1 stop31h 10mIcelandair

Wed 24/915:35LGW - SEA

1 stop13h 05mIcelandair

Deal found 27/8£376

Thu 11/919:00SEA - LGW

1 stop11h 40mIcelandair

Thu 25/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 27/8£393

Fri 12/923:30SEA - LGW

1 stop31h 05mIcelandair

Mon 22/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 28/8£383

Sat 13/919:00SEA - LGW

1 stop11h 35mIcelandair

Mon 29/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 28/8£377

Sun 14/919:00SEA - LGW

1 stop11h 40mIcelandair

Tue 23/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 28/8£375

Wed 24/919:00SEA - LGW

1 stop11h 40mIcelandair

Wed 15/1015:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 26/8£372

Wed 24/919:00SEA - LGW

1 stop11h 40mIcelandair

Tue 30/915:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 28/8£378

Wed 24/919:00SEA - LGW

1 stop11h 40mIcelandair

Tue 7/1015:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 27/8£381

Sun 28/919:00SEA - LGW

1 stop11h 40mIcelandair

Fri 3/1015:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 27/8£389

Mon 29/919:00SEA - LGW

1 stop11h 35mIcelandair

Wed 8/1015:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 28/8£371

One-way flights from Seattle to Gatwick
Search for one-way flight options from Seattle to Gatwick. Find affordable one-way fares based on user searches. Data last updated 29 August 2025.

Fri 26/910:10SEA - LGW

1 stop16h 45mMultiple Airlines

Deal found 27/8£192

Mon 27/1008:01SEA - LGW

1 stop14h 59mMultiple Airlines

Deal found 27/8£194

Sun 21/916:36SEA - LGW

2 stops32h 54mMultiple Airlines

Deal found 27/8£195

Wed 1/1008:00SEA - LGW

1 stop18h 55mMultiple Airlines

Deal found 27/8£196

Mon 29/908:40SEA - LGW

2 stops26h 40mMultiple Airlines

Deal found 28/8£197

Fri 3/1010:10SEA - LGW

1 stop16h 45mMultiple Airlines

Deal found 27/8£198

Sat 20/921:39SEA - LGW

2 stops49h 21mMultiple Airlines

Deal found 27/8£202

Tue 16/914:05SEA - LGW

2 stops18h 55mMultiple Airlines

Deal found 28/8£204

Cheapflights Fare Finder

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

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 24/9

19:00-14:40

1 stop11h 40m

London Gatwick

Wed 15/10

15:40-17:50

1 stop34h 10m

£372

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 10/9

19:00-14:40

1 stop11h 40m

London Gatwick

Thu 25/9

15:40-20:40

1 stop13h 00m

£374

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 25/9

19:00-14:40

1 stop11h 40m

London Gatwick

Mon 29/9

15:40-20:40

1 stop13h 00m

£375

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 22/9

19:00-14:35

1 stop11h 35m

London Gatwick

Fri 26/9

15:40-20:40

1 stop13h 00m

£375

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 13/11

14:35-10:55

1 stop12h 20m

London Gatwick

Mon 17/11

11:55-17:00

1 stop13h 05m

£375

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 16/10

19:00-14:40

1 stop11h 40m

London Gatwick

Mon 3/11

11:55-17:00

1 stop13h 05m

£375

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 23/10

19:00-14:40

1 stop11h 40m

London Gatwick

Sun 2/11

11:55-17:00

1 stop13h 05m

£376

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 12/12

14:35-10:55

1 stop12h 20m

London Gatwick

Fri 9/1

11:55-17:00

1 stop13h 05m

£377

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 5/2

14:35-10:55

1 stop12h 20m

London Gatwick

Wed 18/2

11:55-17:00

1 stop13h 05m

£378

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 15/11

14:35-10:55

1 stop12h 20m

London Gatwick

Sun 23/11

11:55-17:00

1 stop13h 05m

£378

Flights are sorted by cheapest return flights first.

Deals found on 27/8

Showing 1-10 of 19 results

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 return 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 £102). Flying from Seattle to London Gatwick Airport in July is currently the most expensive (average of £142). 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

What airport do you fly from for flights from Seattle to London Gatwick?
Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to London Gatwick. On average, Seattle/Tacoma Intl has 0 outbound flights to London Gatwick per day from 0 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.
How long is the flight from Seattle to London Gatwick Airport?
For as low as £372, Icelandair can have you in London Gatwick Airport from Seattle in 11h 40m. The distance from Seattle to London Gatwick Airport is about 4807 mi.
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 holiday 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 £102). Flying from Seattle to London Gatwick Airport in July is currently the most expensive (average of £142). 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.

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Hounslow

Gatwick

Slough

Luton

Deal

Wembley

Ilford

Crawley

Hayes

Watford

Folkestone

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Chichester

Winchester

Eastbourne

Dartford

Guildford

Romford

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

When you search for this flight from Seattle to Gatwick, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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 has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Gatwick from Seattle today and book when prices fit your budget.

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Cheap flights from Seattle to London Gatwick Airport from £192

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 26/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Seattle to Gatwick

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Seattle to Gatwick

Cheapest flights from Seattle to GatwickExplore 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 29 August 2025.

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 29 August 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to London Gatwick Airport that are best for you.

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.

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?

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?

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

Can I find deals for flights from Seattle to Gatwick that include hotel bookings?

How can I find direct flights from Seattle to Gatwick?

Can I find deals for business class flights from Seattle to Gatwick?

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

Travelling to a place near London Gatwick Airport?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Gatwick

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

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

Can Cheapflights find flights from Seattle to Gatwick with no change fees?

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

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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 29 August 2025.