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Cheap flights from London Gatwick Airport to Seattle from £409

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — SEA
30 Mar — 6 Apr1
1 adult

Cheap flight deals from Gatwick to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Seattle (SEA). 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 25 March 2025.

Round-trip from

£451

One-way from

£409

Popular in

August

Cheapest in

February

Average price

£509
Icelandair
  • Icelandair
  • 17/6-30/7
  • 3 total stops
  • 43h 08m total
  • London to Seattle
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2/4
  • 2/4
  • 3 total stops
  • 33h 44m total
  • London to Seattle
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (£87 potential increase over avg. return price).
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Cheapest flight prices on average. 4% potential price decrease (£18 potential savings vs. average return price).
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Average for round-trip flights in March 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 25 March 2025.

Tue 17/621:20LGW - SEA
2 stops31h 08mMultiple Airlines
Wed 30/715:45SEA - LGW
1 stop12h 00mMultiple Airlines
Deal found 24/3£451
Fri 25/415:40LGW - SEA
1 stop13h 00mIcelandair
Mon 28/419:00SEA - LGW
1 stop11h 35mIcelandair
Deal found 24/3£452
Tue 3/612:00LGW - SEA
2 stops18h 23mVirgin Atlantic
Sun 22/622:58SEA - LGW
1 stop27h 02mVirgin Atlantic
Deal found 24/3£533
Wed 23/418:35LGW - SEA
2 stops36h 08mSWISS
Mon 16/616:25SEA - LGW
1 stop17h 25mSWISS
Deal found 24/3£551
Tue 20/510:45LGW - SEA
2 stops41h 43mWestJet
Tue 27/507:05SEA - LGW
2 stops42h 20mWestJet
Deal found 24/3£662
Sat 12/420:00LGW - SEA
2 stops33h 59mBritish Airways
Sun 27/418:45SEA - LGW
2 stops30h 40mBritish Airways
Deal found 25/3£677

Cheapflights Fare Finder

Customise your flight search to find flights from Gatwick to Seattle 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 858,174 searches. Data last updated 25 March 2025.
Use the filters below to find and compare flights from London Gatwick Airport to Seattle that are best for you.

Fly from

Gatwick

Fly to

Seattle

Route

Depart

Return

Price

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 17/6

21:20-20:28

2 stops31h 08m

Seattle/Tacoma Intl

Wed 30/7

15:45-11:45

1 stop12h 00m

£451

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 25/4

15:40-20:40

1 stop13h 00m

Seattle/Tacoma Intl

Mon 28/4

19:00-14:35

1 stop11h 35m

£452

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 3/6

12:00-22:23

2 stops18h 23m

Seattle/Tacoma Intl

Sun 22/6

22:58-10:00

1 stop27h 02m

£533

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 23/4

18:35-22:43

2 stops36h 08m

Seattle/Tacoma Intl

Mon 16/6

16:25-17:50

1 stop17h 25m

£551

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Tue 20/5

10:45-20:28

2 stops41h 43m

Seattle/Tacoma Intl

Tue 27/5

07:05-09:25

2 stops42h 20m

£662

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sat 12/4

20:00-21:59

2 stops33h 59m

Seattle/Tacoma Intl

Sun 27/4

18:45-09:25

2 stops30h 40m

£677

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Wed 2/4

17:25-19:09

3 stops33h 44m

£409

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 30/5

10:45-20:28

2 stops41h 43m

£416

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Sun 1/6

15:40-20:40

1 stop13h 00m

£421

LondonSeattle

LGW - SEA

LGWSEA

London Gatwick

Fri 23/5

14:00-17:15

1 stop35h 15m

£734

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Showing 1-10 of 11 results
1
2

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 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 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 return flight from Gatwick to Seattle. Price data was last updated on 21 March 2025.

The price you pay for your flight from London Gatwick Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 44 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 £622). Flying from London Gatwick Airport to Seattle in July is currently the most expensive (average of £946). 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.

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

Find hourly flight availability from Gatwick to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 25 March 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 8% on flights from London Gatwick Airport to Seattle by exploring options for tickets at midday.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated 25 March 2025.
Get a feel of what it's like to fly with SWISS, Virgin Atlantic and Turkish Airlines from London to Seattle by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.5
Good
1,569 reviews
Check prices

Crew

8.2

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Overall

7.5

Food

7.0

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
1,569 reviews
SWISS
7.5
Good
1,569 reviews
Check prices

Crew

8.2

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Overall

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Kristina,Nov 2024

ZRH - BER

Never got on the flight due to my first plane being so delayed
Virgin Atlantic
7.4
Good
634 reviews
SWISS
7.5
Good
1,569 reviews
Check prices

Crew

8.2

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Overall

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Kristina,Nov 2024

ZRH - BER

Never got on the flight due to my first plane being so delayed
Turkish Airlines
7.3
Good
3,745 reviews
SWISS
7.5
Good
1,569 reviews
Check prices

Crew

8.2

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Overall

7.5

Food

7.0

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
2,785 reviews
SWISS
7.5
Good
1,569 reviews
Check prices

Crew

8.2

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Overall

7.5

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Kristina,Nov 2024

ZRH - BER

Never got on the flight due to my first plane being so delayed
TAP AIR PORTUGAL
7.1
Good
1,825 reviews
SWISS
7.5
Good
1,569 reviews
Check prices

Crew

8.2

Entertainment

6.7

Boarding

7.6

Comfort

7.3

Overall

7.5

Food

7.0

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

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?

    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. 3 airlines 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?

    Flying on Icelandair is currently your cheapest option to Seattle, with prices starting at £452. Additional return tickets that might be worth considering are offered by Virgin Atlantic and SWISS, with the lowest prices starting at £533 and £551, respectively. Icelandair is priced at 20% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from London Gatwick Airport to Seattle one-way?

    For one-way options, check prices for WestJet. According to our data, you can fly for as low as £416. Users have also found prices from £421 and £734 on Icelandair and Turkish Airlines, respectively.

  • 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 holiday 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 £622). Flying from London Gatwick Airport to Seattle in July is currently the most expensive (average of £946). 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
Tacoma
Leavenworth
Bothell

Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Gatwick to Seattle

Discover the top 3 airlines that operate flights from Gatwick to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 March 2025.
AirlineCheapestAverageFlexibilityOn-time
IcelandairCheapest£338Average£540FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
British AirwaysCheapest£453Average£534FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£471Average£553FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

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 Gatwick to Seattle?

When you search for this flight from Gatwick to Seattle, 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 Gatwick to Seattle?

Cheapflights simply makes it quick and affordable to book flights from Gatwick to Seattle 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 Gatwick to Seattle with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Gatwick to Seattle, users can toggle the no change fees filter when performing a flight search.

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

Of course! You can now track prices for flights from Gatwick to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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