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

Currently priced at $645, Icelandair will fly you from London Gatwick Airport to Seattle and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from SWISS and JetBlue - these airlines can fly you to your destination from $648 and $677, respectively. Icelandair is 11% 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 44 days before your planned departure. Booking around this time can save you about 39% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $740 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,074.

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 $753 per person but you can even find prices for as low as $437. The most expensive prices can be found in the month of August. Opting for a January flight can save you 30% on your journey compared to booking in August

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.

$535+ Flights from London Gatwick Airport to Seattle

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Cheap flight deals from Gatwick to Seattle

Round-trip from	$644 (Kiwi.com)
One-way from	$535 (Norse)
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. 15% potential increase in price ($136 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($31 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 8, 2025.

Sat 9/209:50 amLGW - SEA

1 stop16h 35mMultiple Airlines

Thu 10/97:00 pmSEA - LGW

1 stop11h 40mMultiple Airlines

Deal found 7/7

$644

Mon 9/13:40 pmLGW - SEA

1 stop27h 45mIcelandair

Tue 9/167:00 pmSEA - LGW

1 stop11h 40mIcelandair

Deal found 7/8

$645

Mon 9/16:35 pmLGW - SEA

2 stops36h 24mSWISS

Thu 9/113:19 pmSEA - LGW

2 stops18h 31mSWISS

Deal found 7/6

$648

Mon 8/2512:10 pmLGW - SEA

1 stop30h 10mJetBlue

Tue 9/911:30 amSEA - LGW

1 stop14h 05mJetBlue

Deal found 7/7

$677

Wed 8/203:05 pmLGW - SEA

2 stops25h 07mAmerican Airlines

Mon 9/89:55 pmSEA - LGW

2 stops26h 15mAmerican Airlines

Deal found 7/6

$687

Mon 8/1812:00 pmLGW - SEA

2 stops30h 06mDelta

Thu 9/411:25 amSEA - LGW

1 stop14h 35mDelta

Deal found 7/6

$690

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 8, 2025.

Sat 9/209:50 amLGW - SEA

1 stop16h 35mMultiple Airlines

Thu 10/97:00 pmSEA - LGW

1 stop11h 40mMultiple Airlines

Deal found 7/7

$644

Mon 9/13:40 pmLGW - SEA

1 stop27h 45mIcelandair

Tue 9/167:00 pmSEA - LGW

1 stop11h 40mIcelandair

Deal found 7/8

$645

Mon 9/16:35 pmLGW - SEA

2 stops36h 24mSWISS

Thu 9/113:19 pmSEA - LGW

2 stops18h 31mSWISS

Deal found 7/6

$648

Mon 8/2512:10 pmLGW - SEA

1 stop30h 10mJetBlue

Tue 9/911:30 amSEA - LGW

1 stop14h 05mJetBlue

Deal found 7/7

$677

Wed 8/203:05 pmLGW - SEA

2 stops25h 07mAmerican Airlines

Mon 9/89:55 pmSEA - LGW

2 stops26h 15mAmerican Airlines

Deal found 7/6

$687

Mon 8/1812:00 pmLGW - SEA

2 stops30h 06mDelta

Thu 9/411:25 amSEA - LGW

1 stop14h 35mDelta

Deal found 7/6

$690

Last-minute flights from Gatwick to Seattle
Discover last-minute flight deals from Gatwick to Seattle. Data last updated July 8, 2025 and is based on user searches.

Mon 7/1410:35 amLGW - SEA

2 stops40h 03mWestJet

Fri 7/257:35 pmSEA - LGW

2 stops53h 40mWestJet

Deal found 7/7

$1,104

Tue 7/156:35 pmLGW - SEA

2 stops32h 23mSWISS

Mon 8/44:25 pmSEA - LGW

1 stop17h 25mSWISS

Deal found 7/6

$857

Tue 7/1512:10 pmLGW - SEA

1 stop30h 23mJetBlue

Wed 7/239:13 pmSEA - LGW

1 stop28h 22mJetBlue

Deal found 7/6

$860

Tue 7/1512:00 pmLGW - SEA

1 stop18h 48mVirgin Atlantic

Wed 8/207:20 amSEA - LGW

2 stops18h 40mVirgin Atlantic

Deal found 7/7

$875

Tue 7/1510:25 amLGW - SEA

1 stop20h 12mBritish Airways

Tue 8/511:10 pmSEA - LGW

1 stop25h 30mBritish Airways

Deal found 7/8

$912

Fri 7/189:40 amLGW - SEA

2 stops32h 55mMultiple Airlines

Mon 7/283:45 pmSEA - LGW

2 stops18h 50mMultiple Airlines

Deal found 7/7

$1,085

Mon 8/43:40 pmLGW - SEA

1 stop13h 00mIcelandair

Tue 10/143:45 pmSEA - LGW

1 stop14h 55mIcelandair

Deal found 7/6

$647

Wed 8/612:00 pmLGW - SEA

2 stops19h 56mVirgin Atlantic

Wed 8/137:18 amSEA - LGW

1 stop18h 42mVirgin Atlantic

Deal found 7/6

$767

Mon 8/186:35 pmLGW - SEA

2 stops32h 14mSWISS

Tue 9/92:29 pmSEA - LGW

2 stops19h 21mSWISS

Deal found 7/6

$656

Mon 8/1812:00 pmLGW - SEA

2 stops30h 06mDelta

Thu 9/411:25 amSEA - LGW

1 stop14h 35mDelta

Deal found 7/6

$690

Wed 8/203:05 pmLGW - SEA

2 stops25h 07mAmerican Airlines

Mon 9/89:55 pmSEA - LGW

2 stops26h 15mAmerican Airlines

Deal found 7/6

$687

Wed 8/2012:20 pmLGW - SEA

2 stops34h 33mFinnair

Wed 8/2712:20 pmSEA - LGW

2 stops35h 50mFinnair

Deal found 7/6

$759

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 8, 2025.

Sun 8/172:00 pmLGW - SEA

1 stop28h 30mMultiple Airlines

Deal found 7/5

$535

Mon 10/610:45 amLGW - SEA

2 stops34h 14mWestJet

Deal found 7/7

$538

Wed 10/83:40 pmLGW - SEA

1 stop13h 00mIcelandair

Deal found 7/8

$591

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

Sat 9/20

9:50 am-6:25 pm

1 stop16h 35m

Seattle/Tacoma Intl

Thu 10/9

7:00 pm-2:40 pm

1 stop11h 40m

$644

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 9/1

3:40 pm-11:25 am

1 stop27h 45m

Seattle/Tacoma Intl

Tue 9/16

7:00 pm-2:40 pm

1 stop11h 40m

$645

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 9/1

6:35 pm-10:59 pm

2 stops36h 24m

Seattle/Tacoma Intl

Thu 9/11

3:19 pm-5:50 pm

2 stops18h 31m

$648

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 8/25

12:10 pm-10:20 am

1 stop30h 10m

Seattle/Tacoma Intl

Tue 9/9

11:30 am-9:35 am

1 stop14h 05m

$677

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 8/20

3:05 pm-8:12 am

2 stops25h 07m

Seattle/Tacoma Intl

Mon 9/8

9:55 pm-8:10 am

2 stops26h 15m

$687

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 8/18

12:00 pm-10:06 am

2 stops30h 06m

Seattle/Tacoma Intl

Thu 9/4

11:25 am-10:00 am

1 stop14h 35m

$690

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 8/17

2:00 pm-10:30 am

1 stop28h 30m

$535

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Mon 10/6

10:45 am-12:59 pm

2 stops34h 14m

$538

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 10/8

3:40 pm-8:40 pm

1 stop13h 00m

$591

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/5

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

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

The best time to book flights from London Gatwick Airport to Seattle is 44 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $388). 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 Delta, SWISS, and JetBlue 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.

Delta

8.0

Very good

7,958 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,958 reviews

Delta

8.0

Very good

7,958 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

SWISS

7.5

Good

1,652 reviews

Delta

8.0

Very good

7,958 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

JetBlue

7.3

Good

2,910 reviews

Delta

8.0

Very good

7,958 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,958 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

WestJet

7.2

Good

2,920 reviews

Delta

8.0

Very good

7,958 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 $645, Icelandair will fly you from London Gatwick Airport to Seattle and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from SWISS and JetBlue - these airlines can fly you to your destination from $648 and $677, respectively. Icelandair is 11% 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 $388). 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

SeaTac

Tukwila

Tacoma

Lakewood

Ocean Shores

Lacey

Leavenworth

Lynnwood

Renton

Olympia

Shoreline

Puyallup

Cle Elum

Centralia

Kent

Chehalis

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Federal Way

Shelton

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Other flights to Seattle

Top airline flying from Gatwick to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$418	Average$899	FlexibilityNo cancel fee	On-time76%

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$535+ 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 8/17. 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

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Cheap flight deals from Gatwick to Seattle

Round-trip from

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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 8, 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 8, 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

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

Use this chart to determine the optimal time to book a round-trip flight from Gatwick to Seattle. Price data was last updated on June 27, 2025.

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 Delta, SWISS, and JetBlue 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 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 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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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 8, 2025.