What are the cheapest airlines flying from London Gatwick Airport to Seattle round-trip?

Currently priced at $652, SWISS will fly you from London Gatwick Airport to Seattle and back. In addition to SWISS, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and British Airways - these airlines can fly you to your destination from $654 and $664, respectively. SWISS is 9% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, 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 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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

To save on the cost of your flight from London Gatwick Airport to Seattle, book at least 45 days before your planned departure. Booking around this time can save you about 41% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $767 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,069.

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

January is one of the best times of the year to fly to Seattle from London Gatwick Airport. Prices for January average $746 per person but you can even find prices for as low as $437. The most expensive prices can be found in the month of July. Opting for a January flight can save you 27% on your journey compared to booking in July

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Gatwick Airport to Seattle as you normally would.

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

Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from London Gatwick to Seattle. 1 airline have flights to Seattle/Tacoma Intl from London Gatwick on a regular basis. Booking flights from London Gatwick to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from London Gatwick per day.

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

Yes. In addition to deals on Gatwick to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Gatwick to Seattle?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to Seattle.

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

Yes. Cheapflights offers flight deals from Gatwick to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$522+ Flights from London Gatwick Airport to Seattle

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Cheap flight deals from Gatwick to Seattle

Round-trip from	$652 (SWISS)
One-way from	$522 (Kiwi.com)
Popular in	August
Cheapest in	March
Average price	$905

From London Gatwick to Seattle/Tacoma Intl

Search Deals

One-way flight from London Gatwick to Seattle/Tacoma Intl

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($120 potential increase over avg. RT price).

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Cheapest flight prices on average. 3% potential price decrease ($25 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Find flight deals from Gatwick to Seattle

Cheapest flights from Gatwick to Seattle
Explore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Tue 10/76:35 pmLGW - SEA

2 stops32h 01mSWISS

Thu 11/2010:53 amSEA - LGW

2 stops22h 57mSWISS

Deal found 7/29

$652

Sat 8/163:40 pmLGW - SEA

1 stop13h 00mIcelandair

Fri 8/2211:30 pmSEA - LGW

1 stop28h 15mIcelandair

Deal found 7/28

$654

Mon 9/810:25 amLGW - SEA

1 stop17h 11mMultiple Airlines

Fri 9/2610:10 amSEA - LGW

1 stop16h 45mMultiple Airlines

Deal found 7/27

$655

Mon 10/68:40 pmLGW - SEA

2 stops35h 47mBritish Airways

Mon 10/132:52 pmSEA - LGW

2 stops21h 08mBritish Airways

Deal found 7/27

$664

Sun 9/148:40 pmLGW - SEA

2 stops31h 29mIberia

Mon 9/226:05 amSEA - LGW

2 stops20h 50mIberia

Deal found 7/28

$721

Mon 9/112:10 pmLGW - SEA

1 stop17h 49mJetBlue

Mon 9/1511:30 amSEA - LGW

1 stop14h 05mJetBlue

Deal found 7/29

$731

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

Tue 10/76:35 pmLGW - SEA

2 stops32h 01mSWISS

Thu 11/2010:53 amSEA - LGW

2 stops22h 57mSWISS

Deal found 7/29

$652

Sat 8/163:40 pmLGW - SEA

1 stop13h 00mIcelandair

Fri 8/2211:30 pmSEA - LGW

1 stop28h 15mIcelandair

Deal found 7/28

$654

Mon 9/810:25 amLGW - SEA

1 stop17h 11mMultiple Airlines

Fri 9/2610:10 amSEA - LGW

1 stop16h 45mMultiple Airlines

Deal found 7/27

$655

Mon 10/68:40 pmLGW - SEA

2 stops35h 47mBritish Airways

Mon 10/132:52 pmSEA - LGW

2 stops21h 08mBritish Airways

Deal found 7/27

$664

Sun 9/148:40 pmLGW - SEA

2 stops31h 29mIberia

Mon 9/226:05 amSEA - LGW

2 stops20h 50mIberia

Deal found 7/28

$721

Mon 9/112:10 pmLGW - SEA

1 stop17h 49mJetBlue

Mon 9/1511:30 amSEA - LGW

1 stop14h 05mJetBlue

Deal found 7/29

$731

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

Tue 8/512:10 pmLGW - SEA

1 stop17h 49mJetBlue

Thu 10/1611:30 amSEA - LGW

1 stop14h 05mJetBlue

Deal found 7/28

$855

Tue 8/56:35 pmLGW - SEA

2 stops34h 48mSWISS

Mon 8/184:25 pmSEA - LGW

1 stop17h 25mSWISS

Deal found 7/27

$1,054

Tue 8/512:05 pmLGW - SEA

2 stops40h 04mITA Airways

Wed 8/1310:15 amSEA - LGW

2 stops41h 00mITA Airways

Deal found 7/28

$1,237

Wed 8/610:45 amLGW - SEA

2 stops34h 13mMultiple Airlines

Wed 8/1311:30 pmSEA - LGW

1 stop31h 10mMultiple Airlines

Deal found 7/28

$1,136

Thu 8/710:25 amLGW - SEA

1 stop20h 12mBritish Airways

Mon 8/119:18 pmSEA - LGW

1 stop28h 02mBritish Airways

Deal found 7/28

$844

Fri 8/83:40 pmLGW - SEA

1 stop13h 00mIcelandair

Fri 8/1511:10 pmSEA - LGW

2 stops28h 35mIcelandair

Deal found 7/29

$806

Sat 8/163:40 pmLGW - SEA

1 stop13h 00mIcelandair

Fri 8/2211:30 pmSEA - LGW

1 stop28h 15mIcelandair

Deal found 7/28

$654

Wed 8/2710:55 amLGW - SEA

2 stops18h 41mMultiple Airlines

Wed 9/310:08 amSEA - LGW

1 stop16h 47mMultiple Airlines

Deal found 7/28

$701

Fri 8/2912:10 pmLGW - SEA

1 stop17h 55mJetBlue

Thu 9/1111:30 amSEA - LGW

1 stop14h 05mJetBlue

Deal found 7/28

$752

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

Thu 8/2110:45 amLGW - SEA

2 stops34h 19mMultiple Airlines

Deal found 7/27

$522

Sun 8/2410:45 amLGW - SEA

3 stops34h 13mWestJet

Deal found 7/26

$534

Tue 10/73:40 pmLGW - SEA

1 stop13h 00mIcelandair

Deal found 7/26

$606

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 10/7

6:35 pm-6:36 pm

2 stops32h 01m

Seattle/Tacoma Intl

Thu 11/20

10:53 am-5:50 pm

2 stops22h 57m

$652

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 8/16

3:40 pm-8:40 pm

1 stop13h 00m

Seattle/Tacoma Intl

Fri 8/22

11:30 pm-11:45 am

1 stop28h 15m

$654

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 9/8

10:25 am-7:36 pm

1 stop17h 11m

Seattle/Tacoma Intl

Fri 9/26

10:10 am-10:55 am

1 stop16h 45m

$655

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 10/6

8:40 pm-12:27 am

2 stops35h 47m

Seattle/Tacoma Intl

Mon 10/13

2:52 pm-8:00 pm

2 stops21h 08m

$664

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 9/14

8:40 pm-8:09 pm

2 stops31h 29m

Seattle/Tacoma Intl

Mon 9/22

6:05 am-10:55 am

2 stops20h 50m

$721

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 9/1

12:10 pm-9:59 pm

1 stop17h 49m

Seattle/Tacoma Intl

Mon 9/15

11:30 am-9:35 am

1 stop14h 05m

$731

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Thu 8/21

10:45 am-1:04 pm

2 stops34h 19m

$522

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 8/24

10:45 am-12:58 pm

3 stops34h 13m

$534

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 10/7

3:40 pm-8:40 pm

1 stop13h 00m

$606

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Best time to book a flight from Gatwick to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Gatwick 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 London Gatwick Airport to Seattle

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

Currently, January is the cheapest month in which you can book a flight from London Gatwick Airport to Seattle (average of $238). Flying from London Gatwick Airport to Seattle in June is currently the most expensive (average of $389). 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.

Reviews of airlines servicing Seattle

Peruse reviews from past customers who have flown with SWISS, JetBlue, and WestJet from London Gatwick Airport to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

SWISS

7.5

Good

1,683 reviews

Reviews

1 / 20

2.0

Mediocre

Kristina,Nov 2024

ZRH - BER

Never got on the flight due to my first plane being so delayed

SWISS

7.5

Good

1,683 reviews

SWISS

7.5

Good

1,683 reviews

Reviews

1 / 20

2.0

Mediocre

Kristina,Nov 2024

ZRH - BER

Never got on the flight due to my first plane being so delayed

JetBlue

7.3

Good

2,913 reviews

SWISS

7.5

Good

1,683 reviews

Reviews

1 / 20

2.0

Mediocre

Kristina,Nov 2024

ZRH - BER

Never got on the flight due to my first plane being so delayed

WestJet

7.2

Good

2,972 reviews

SWISS

7.5

Good

1,683 reviews

Reviews

1 / 20

2.0

Mediocre

Kristina,Nov 2024

ZRH - BER

Never got on the flight due to my first plane being so delayed

Icelandair

7.0

Good

521 reviews

SWISS

7.5

Good

1,683 reviews

Reviews

1 / 20

2.0

Mediocre

Kristina,Nov 2024

ZRH - BER

Never got on the flight due to my first plane being so delayed

Iberia

7.0

Good

2,859 reviews

SWISS

7.5

Good

1,683 reviews

Reviews

1 / 20

2.0

Mediocre

Kristina,Nov 2024

ZRH - BER

Never got on the flight due to my first plane being so delayed

Related info for your journey

What airport do you fly into for flights to Seattle from London Gatwick?
Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from London Gatwick to Seattle. 1 airline have flights to Seattle/Tacoma Intl from London Gatwick on a regular basis. Booking flights from London Gatwick to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from London Gatwick per day.
What are the cheapest airlines flying from London Gatwick Airport to Seattle round-trip?
Currently priced at $652, SWISS will fly you from London Gatwick Airport to Seattle and back. In addition to SWISS, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and British Airways - these airlines can fly you to your destination from $654 and $664, respectively. SWISS is 9% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for flights from Gatwick to Seattle that include hotel bookings?
Yes. In addition to deals on Gatwick to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Gatwick to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to Seattle.
Can I find deals for business class flights from Gatwick to Seattle?
Yes. Cheapflights offers flight deals from Gatwick to Seattle 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 London Gatwick Airport to Seattle?
Currently, January is the cheapest month in which you can book a flight from London Gatwick Airport to Seattle (average of $238). Flying from London Gatwick Airport to Seattle in June is currently the most expensive (average of $389). 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

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Shoreline

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Other flights to Seattle

Top airline flying from Gatwick to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$402	Average$907	FlexibilityNo cancel fee	On-time76%

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$522+ Cheap flights from Gatwick (LGW) to Seattle (SEA)

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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Gatwick to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Gatwick to Seattle

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Gatwick to Seattle

Cheapest flights from Gatwick to SeattleExplore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Gatwick to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Gatwick with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to Seattle

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

Reviews of airlines servicing Seattle

Peruse reviews from past customers who have flown with SWISS, JetBlue, and WestJet from London Gatwick Airport to Seattle to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Gatwick to Seattle. 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 into for flights to Seattle from London Gatwick?

What are the cheapest airlines flying from London Gatwick Airport to Seattle round-trip?

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

How can I find direct flights from Gatwick to Seattle?

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

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

Traveling to a place near Seattle?

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 Gatwick to Seattle

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

Top airline flying from Gatwick to Seattle

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Book with Flexibility

Travel Smart

Cheapest flights from Gatwick to Seattle
Explore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.