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

For as low as £380, Icelandair can have you in London Gatwick Airport from Seattle in 12h 20m. 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).

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.

£199+ Flights from Seattle to London Gatwick Airport

Q: How much does it cost for a return flight from Seattle to London Gatwick Airport?

Airfare is below average for this route at the moment. Seattle to London Gatwick Airport flights typically cost between £450 and £581 in October. The cheapest return flight price found within the last 3 days was £372 on Icelandair (1 Oct-15 Oct).

Cheap flight deals from Seattle to Gatwick

Round-trip from	£372
One-way from	£199
Popular in	June
Cheapest in	January
Average price	£538

Icelandair
1/10-15/10
2 total stops
24h 40m total
Seattle to London

Search Deals

7/10
2 total stops
18h 55m total
Seattle to London

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£38 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 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 17 September 2025.

Wed 1/1019:00SEA - LGW

1 stop11h 40mIcelandair

Wed 15/1015:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 16/9£372

Thu 6/1114:35SEA - LGW

1 stop12h 20mIcelandair

Tue 18/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 15/9£375

Tue 18/1114:35SEA - LGW

1 stop12h 20mIcelandair

Thu 27/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 16/9£375

Mon 1/1214:35SEA - LGW

2 stops18h 45mMultiple Airlines

Sun 14/1208:25LGW - SEA

2 stops16h 35mMultiple Airlines

Deal found 15/9£377

Tue 4/1114:35SEA - LGW

1 stop12h 20mIcelandair

Wed 19/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 15/9£380

Wed 15/1019:00SEA - LGW

1 stop11h 40mIcelandair

Wed 22/1015:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 16/9£381

Fri 17/1015:45SEA - LGW

1 stop14h 55mIcelandair

Fri 24/1015:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 16/9£383

Tue 14/1010:00SEA - LGW

2 stops18h 20mMultiple Airlines

Tue 21/1021:35LGW - SEA

2 stops24h 41mMultiple Airlines

Deal found 16/9£383

Wed 12/1114:35SEA - LGW

1 stop12h 20mIcelandair

Fri 28/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 15/9£385

Mon 6/1015:45SEA - LGW

2 stops18h 50mMultiple Airlines

Mon 13/1009:45LGW - SEA

2 stops18h 55mMultiple Airlines

Deal found 16/9£387

Sun 9/1114:35SEA - LGW

1 stop12h 20mIcelandair

Fri 28/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 16/9£389

Tue 11/1113:20SEA - LGW

2 stops20h 30mSWISS

Mon 17/1118:40LGW - SEA

2 stops34h 11mSWISS

Deal found 16/9£391

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 17 September 2025.

Wed 5/1114:35SEA - LGW

1 stop12h 20mIcelandair

Fri 21/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 15/9£380

Sun 9/1114:35SEA - LGW

1 stop12h 20mIcelandair

Sun 23/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 15/9£380

Thu 5/314:35SEA - LGW

1 stop12h 20mIcelandair

Tue 31/315:40LGW - SEA

1 stop13h 30mIcelandair

Deal found 15/9£380

Tue 3/314:35SEA - LGW

1 stop12h 20mIcelandair

Mon 30/315:40LGW - SEA

1 stop13h 30mIcelandair

Deal found 15/9£380

Wed 4/314:35SEA - LGW

1 stop12h 20mIcelandair

Tue 31/315:40LGW - SEA

1 stop13h 30mIcelandair

Deal found 15/9£380

Tue 3/314:35SEA - LGW

1 stop12h 20mIcelandair

Sun 29/315:40LGW - SEA

1 stop13h 30mIcelandair

Deal found 15/9£380

Mon 9/315:35SEA - LGW

1 stop12h 20mIcelandair

Tue 31/315:40LGW - SEA

1 stop13h 30mIcelandair

Deal found 15/9£380

Wed 4/314:35SEA - LGW

1 stop12h 20mIcelandair

Mon 30/315:40LGW - SEA

1 stop13h 30mIcelandair

Deal found 15/9£380

Thu 5/314:35SEA - LGW

1 stop12h 20mIcelandair

Sun 29/315:40LGW - SEA

1 stop13h 30mIcelandair

Deal found 15/9£380

Fri 7/1114:35SEA - LGW

1 stop12h 20mIcelandair

Fri 21/1111:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 15/9£380

Sat 7/314:35SEA - LGW

1 stop12h 20mIcelandair

Mon 16/311:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 17/9£381

Sun 8/315:00SEA - LGW

1 stop12h 55mIcelandair

Mon 16/311:55LGW - SEA

1 stop13h 05mIcelandair

Deal found 17/9£381

Last-minute flights from Seattle to Gatwick
Discover last-minute flight deals from Seattle to Gatwick. Data last updated 17 September 2025 and is based on user searches.

Mon 22/919:00SEA - LGW

1 stop11h 35mIcelandair

Thu 2/1015:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 14/9£420

Mon 22/915:45SEA - LGW

1 stop14h 50mIcelandair

Tue 7/1015:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 15/9£431

Mon 22/915:45SEA - LGW

1 stop14h 50mIcelandair

Sat 11/1015:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 15/9£454

Tue 23/919:00SEA - LGW

1 stop11h 40mIcelandair

Tue 7/1015:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 16/9£405

Tue 23/910:55SEA - LGW

2 stops22h 55mSWISS

Tue 30/918:35LGW - SEA

2 stops32h 01mSWISS

Deal found 16/9£474

Tue 23/910:55SEA - LGW

2 stops22h 55mSWISS

Tue 7/1018:35LGW - SEA

2 stops32h 01mSWISS

Deal found 16/9£477

Fri 26/908:01SEA - LGW

1 stop18h 39mMultiple Airlines

Tue 30/910:25LGW - SEA

1 stop19h 28mMultiple Airlines

Deal found 15/9£427

Fri 26/919:00SEA - LGW

1 stop11h 40mIcelandair

Tue 7/1015:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 16/9£480

Sat 27/919:00SEA - LGW

1 stop11h 35mIcelandair

Fri 10/1015:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 17/9£475

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 17 September 2025.

Tue 7/1014:05SEA - LGW

2 stops18h 55mMultiple Airlines

Deal found 15/9£199

Mon 29/922:41SEA - LGW

1 stop23h 39mMultiple Airlines

Deal found 15/9£201

Fri 17/1008:28SEA - LGW

1 stop18h 27mMultiple Airlines

Deal found 15/9£202

Sun 9/1114:22SEA - LGW

2 stops31h 38mMultiple Airlines

Deal found 15/9£202

Sat 1/1110:08SEA - LGW

2 stops40h 42mMultiple Airlines

Deal found 15/9£204

Wed 1/1022:41SEA - LGW

1 stop23h 39mMultiple Airlines

Deal found 15/9£205

Thu 13/1121:34SEA - LGW

2 stops50h 46mMultiple Airlines

Deal found 15/9£207

Thu 16/1010:00SEA - LGW

3 stops20h 10mMultiple Airlines

Deal found 16/9£208

Tue 30/907:55SEA - LGW

1 stop14h 25mMultiple Airlines

Deal found 16/9£210

Mon 10/1114:22SEA - LGW

3 stops59h 28mMultiple Airlines

Deal found 15/9£210

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 5/11

14:35-10:55

1 stop12h 20m

London Gatwick

Fri 21/11

11:55-17:00

1 stop13h 05m

£380

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 9/11

14:35-10:55

1 stop12h 20m

London Gatwick

Sun 23/11

11:55-17:00

1 stop13h 05m

£380

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 5/3

14:35-10:55

1 stop12h 20m

London Gatwick

Tue 31/3

15:40-21:10

1 stop13h 30m

£380

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 3/3

14:35-10:55

1 stop12h 20m

London Gatwick

Mon 30/3

15:40-21:10

1 stop13h 30m

£380

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 4/3

14:35-10:55

1 stop12h 20m

London Gatwick

Tue 31/3

15:40-21:10

1 stop13h 30m

£380

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 3/3

14:35-10:55

1 stop12h 20m

London Gatwick

Sun 29/3

15:40-21:10

1 stop13h 30m

£380

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 9/3

15:35-10:55

1 stop12h 20m

London Gatwick

Tue 31/3

15:40-21:10

1 stop13h 30m

£380

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 4/3

14:35-10:55

1 stop12h 20m

London Gatwick

Mon 30/3

15:40-21:10

1 stop13h 30m

£380

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 5/3

14:35-10:55

1 stop12h 20m

London Gatwick

Sun 29/3

15:40-21:10

1 stop13h 30m

£380

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 7/11

14:35-10:55

1 stop12h 20m

London Gatwick

Fri 21/11

11:55-17:00

1 stop13h 05m

£380

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 21 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.

How much does it cost for a return flight from Seattle to London Gatwick Airport?

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 £380, Icelandair can have you in London Gatwick Airport from Seattle in 12h 20m. 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.

See more FAQs

Milton Keynes

Croydon

Hounslow

Slough

Gatwick

Luton

Deal

Wembley

Ilford

Crawley

Hayes

Watford

Winchester

Chichester

Ipswich

Dartford

Guildford

Brentford

Bishop's Stortford

Romford

Browse thousands of different options on Cheapflights for your next trip

Fly with Cheapflights

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Seattle to London Gatwick Airport from £199

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 7/10. 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 17 September 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 17 September 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?

How much does it cost for a return 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Gatwick

See prices for flight routes from nearby airports that may be better suited for you.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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?

100% Free

Book with Flexibility

Travel Smart

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 17 September 2025.