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

Cheapflights users have booked flights from Seattle to London Gatwick Airport round-trip from £400. Other airlines that can offer you cheap pricing are American Airlines, from £404, and British Airways, from £423. These flights start at 22% lower than the current average price 3 months from now.

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 44% 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 £598, or £712 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 £573 for the month, but tickets can be as low as £404. 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.

£178+ Flights from Seattle to London Gatwick Airport

Cheap flight deals from Seattle to Gatwick

Round-trip from	£400
One-way from	£178
Popular in	June
Cheapest in	January
Average price	£536

Icelandair
1/8-10/8
2 total stops
62h 25m total
Seattle to London

Search Deals

7/10
2 total stops
17h 10m total
Seattle to London

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£40 potential increase over avg. return price).

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

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Average for round-trip flights in July 2025

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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 15 7월 2025.

금 1/823:30SEA - LGW

1 stop28h 15mIcelandair

일 10/815:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 14/7£400

목 2/1006:05SEA - LGW

2 stops18h 05mAmerican Airlines

화 14/1010:40LGW - SEA

2 stops21h 47mAmerican Airlines

Deal found 14/7£404

월 18/819:35SEA - LGW

1 stop13h 20mMultiple Airlines

수 27/808:50LGW - SEA

1 stop17h 00mMultiple Airlines

Deal found 14/7£408

토 26/707:49SEA - LGW

2 stops18h 51mBritish Airways

목 28/810:40LGW - SEA

2 stops21h 01mBritish Airways

Deal found 14/7£423

월 11/816:25SEA - LGW

1 stop17h 25mSWISS

수 3/918:35LGW - SEA

2 stops36h 24mSWISS

Deal found 12/7£435

수 27/807:18SEA - LGW

1 stop18h 42mVirgin Atlantic

수 3/912:00LGW - SEA

1 stop19h 15mVirgin Atlantic

Deal found 13/7£446

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 15 7월 2025.

금 1/823:30SEA - LGW

1 stop28h 15mIcelandair

일 10/815:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 14/7£400

목 2/1006:05SEA - LGW

2 stops18h 05mAmerican Airlines

화 14/1010:40LGW - SEA

2 stops21h 47mAmerican Airlines

Deal found 14/7£404

월 18/819:35SEA - LGW

1 stop13h 20mMultiple Airlines

수 27/808:50LGW - SEA

1 stop17h 00mMultiple Airlines

Deal found 14/7£408

토 26/707:49SEA - LGW

2 stops18h 51mBritish Airways

목 28/810:40LGW - SEA

2 stops21h 01mBritish Airways

Deal found 14/7£423

월 11/816:25SEA - LGW

1 stop17h 25mSWISS

수 3/918:35LGW - SEA

2 stops36h 24mSWISS

Deal found 12/7£435

수 27/807:18SEA - LGW

1 stop18h 42mVirgin Atlantic

수 3/912:00LGW - SEA

1 stop19h 15mVirgin Atlantic

Deal found 13/7£446

Last-minute flights from Seattle to Gatwick
Discover last-minute flight deals from Seattle to Gatwick. Data last updated 15 7월 2025 and is based on user searches.

토 19/712:30SEA - LGW

1 stop25h 55mTurkish Airlines

수 23/714:00LGW - SEA

1 stop28h 35mTurkish Airlines

Deal found 14/7£720

월 21/710:00SEA - LGW

2 stops26h 10mMultiple Airlines

월 28/721:30LGW - SEA

3 stops31h 11mMultiple Airlines

Deal found 14/7£552

월 21/716:25SEA - LGW

1 stop17h 25mSWISS

월 4/818:35LGW - SEA

2 stops32h 01mSWISS

Deal found 13/7£818

화 22/711:34SEA - LGW

1 stop14h 26mVirgin Atlantic

화 29/712:00LGW - SEA

2 stops18h 21mVirgin Atlantic

Deal found 14/7£591

수 23/715:45SEA - LGW

1 stop12h 00mIcelandair

수 27/815:35LGW - SEA

1 stop13h 05mIcelandair

Deal found 13/7£451

수 23/721:13SEA - LGW

1 stop28h 22mJetBlue

월 4/812:10LGW - SEA

1 stop30h 23mJetBlue

Deal found 14/7£636

토 26/707:49SEA - LGW

2 stops18h 51mBritish Airways

목 28/810:40LGW - SEA

2 stops21h 01mBritish Airways

Deal found 14/7£423

금 1/823:30SEA - LGW

1 stop28h 15mIcelandair

일 10/815:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 14/7£400

월 11/816:25SEA - LGW

1 stop17h 25mSWISS

수 3/918:35LGW - SEA

2 stops36h 24mSWISS

Deal found 12/7£435

월 18/819:35SEA - LGW

1 stop13h 20mMultiple Airlines

수 27/808:50LGW - SEA

1 stop17h 00mMultiple Airlines

Deal found 14/7£408

수 27/807:18SEA - LGW

1 stop18h 42mVirgin Atlantic

수 3/912:00LGW - SEA

1 stop19h 15mVirgin Atlantic

Deal found 13/7£446

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

금 1/8

23:30-11:45

1 stop28h 15m

London Gatwick

일 10/8

15:40-17:50

1 stop34h 10m

£400

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

목 2/10

06:05-08:10

2 stops18h 05m

London Gatwick

화 14/10

10:40-00:27

2 stops21h 47m

£404

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

월 18/8

19:35-16:55

1 stop13h 20m

London Gatwick

수 27/8

08:50-17:50

1 stop17h 00m

£408

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

토 26/7

07:49-10:40

2 stops18h 51m

London Gatwick

목 28/8

10:40-23:41

2 stops21h 01m

£423

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

월 11/8

16:25-17:50

1 stop17h 25m

London Gatwick

수 3/9

18:35-22:59

2 stops36h 24m

£435

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

수 27/8

07:18-10:00

1 stop18h 42m

London Gatwick

수 3/9

12:00-23:15

1 stop19h 15m

£446

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

화 7/10

19:00-20:10

2 stops17h 10m

£178

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

화 7/10

19:00-14:40

1 stop11h 40m

£183

Flights are sorted by cheapest return flights first.

Deals found on 13/7

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.

Reviews of airlines servicing Gatwick

Check out reviews from past customers who have flown with SWISS, Virgin Atlantic, andAmerican Airlines from Seattle to London Gatwick Airport 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

1,657 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.

SWISS

7.5

Good

1,657 reviews

SWISS

7.5

Good

1,657 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.

Virgin Atlantic

7.4

Good

655 reviews

SWISS

7.5

Good

1,657 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.

American Airlines

7.2

Good

10,000 reviews

SWISS

7.5

Good

1,657 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.

Icelandair

7.0

Good

515 reviews

SWISS

7.5

Good

1,657 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.

British Airways

6.6

Okay

7,134 reviews

SWISS

7.5

Good

1,657 reviews

Check prices

Reviews

1 / 20

6.0

Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.

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.
What are the cheapest airlines flying from Seattle to London Gatwick Airport round-trip?
Cheapflights users have booked flights from Seattle to London Gatwick Airport round-trip from £400. Other airlines that can offer you cheap pricing are American Airlines, from £404, and British Airways, from £423. These flights start at 22% lower than the current average price 3 months from now.
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

Deal

Gatwick

Slough

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Ilford

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Chichester

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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 £178

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 15 7월 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 15 7월 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?

Reviews of airlines servicing Gatwick

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?

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

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

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 15 7월 2025.