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 £488. Other airlines that can offer you cheap pricing are SWISS, from £491, and British Airways, from £492. These flights start at 5% lower than the current average price 3 months from now.

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

To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at £187. JetBlue flights start at £261 while deals on WestJet start at £293 one-way.

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 35 days in advance to save up to 38% 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 35 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 £619, or £722 for flights within the next 24 hours.

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

Our data shows that January tends to be the cheapest month to fly to London Gatwick Airport from Seattle. Users have commonly found prices around £575 for the month, but tickets can be as low as £365. 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.

£187+ Flights from Seattle to London Gatwick Airport

Cheap flight deals from Seattle to Gatwick

Round-trip from	£488
One-way from	£187
Popular in	June
Cheapest in	January
Average price	£670

Icelandair
24/8-15/9
2 total stops
65h 15m total
Seattle to London

Search Deals

Icelandair
28/10
1 total stop
12h 20m total
Seattle to London

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£46 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 June 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 13 June 2025.

Sun 24/823:30SEA - LGW

1 stop31h 05mIcelandair

Mon 15/915:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 12/6£488

Wed 20/810:55SEA - LGW

2 stops23h 00mSWISS

Tue 23/918:35LGW - SEA

2 stops32h 01mSWISS

Deal found 10/6£491

Sun 27/707:49SEA - LGW

2 stops18h 51mBritish Airways

Thu 28/810:40LGW - SEA

2 stops21h 00mBritish Airways

Deal found 10/6£492

Sun 7/915:45SEA - LGW

2 stops20h 10mMultiple Airlines

Fri 19/908:55LGW - SEA

2 stops16h 55mMultiple Airlines

Deal found 11/6£497

Wed 13/805:30SEA - LGW

2 stops20h 30mVirgin Atlantic

Sun 24/812:00LGW - SEA

1 stop19h 15mVirgin Atlantic

Deal found 12/6£510

Fri 8/811:30SEA - LGW

1 stop14h 05mJetBlue

Sat 23/812:10LGW - SEA

1 stop18h 00mJetBlue

Deal found 11/6£529

Sun 9/1119:00SEA - LGW

1 stop37h 10mTurkish Airlines

Wed 19/1106:25LGW - SEA

1 stop18h 40mTurkish Airlines

Deal found 11/6£587

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 13 June 2025.

Sun 24/823:30SEA - LGW

1 stop31h 05mIcelandair

Mon 15/915:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 12/6£488

Wed 20/810:55SEA - LGW

2 stops23h 00mSWISS

Tue 23/918:35LGW - SEA

2 stops32h 01mSWISS

Deal found 10/6£491

Sun 27/707:49SEA - LGW

2 stops18h 51mBritish Airways

Thu 28/810:40LGW - SEA

2 stops21h 00mBritish Airways

Deal found 10/6£492

Sun 7/915:45SEA - LGW

2 stops20h 10mMultiple Airlines

Fri 19/908:55LGW - SEA

2 stops16h 55mMultiple Airlines

Deal found 11/6£497

Wed 13/805:30SEA - LGW

2 stops20h 30mVirgin Atlantic

Sun 24/812:00LGW - SEA

1 stop19h 15mVirgin Atlantic

Deal found 12/6£510

Fri 8/811:30SEA - LGW

1 stop14h 05mJetBlue

Sat 23/812:10LGW - SEA

1 stop18h 00mJetBlue

Deal found 11/6£529

Sun 9/1119:00SEA - LGW

1 stop37h 10mTurkish Airlines

Wed 19/1106:25LGW - SEA

1 stop18h 40mTurkish Airlines

Deal found 11/6£587

Last-minute flights from Seattle to Gatwick
Discover last-minute flight deals from Seattle to Gatwick. Data last updated 13 June 2025 and is based on user searches.

Tue 17/607:20SEA - LGW

3 stops21h 00mMultiple Airlines

Tue 24/620:35LGW - SEA

3 stops33h 41mMultiple Airlines

Deal found 12/6£669

Tue 17/611:30SEA - LGW

1 stop14h 05mJetBlue

Wed 2/712:10LGW - SEA

1 stop17h 43mJetBlue

Deal found 12/6£792

Tue 17/612:30SEA - LGW

1 stop19h 45mTurkish Airlines

Wed 9/717:15LGW - SEA

1 stop25h 20mTurkish Airlines

Deal found 10/6£1,007

Fri 20/613:15SEA - LGW

2 stops36h 10mWestJet

Wed 30/710:45LGW - SEA

2 stops33h 46mWestJet

Deal found 11/6£1,179

Sun 22/615:45SEA - LGW

1 stop14h 55mIcelandair

Thu 31/713:00LGW - SEA

1 stop30h 25mIcelandair

Deal found 11/6£665

Wed 9/721:30SEA - LGW

2 stops28h 30mDelta

Fri 18/712:00LGW - SEA

1 stop18h 48mDelta

Deal found 11/6£648

Thu 10/711:43SEA - LGW

1 stop13h 52mJetBlue

Wed 13/812:10LGW - SEA

1 stop18h 00mJetBlue

Deal found 11/6£619

Mon 14/716:25SEA - LGW

1 stop17h 25mSWISS

Sun 10/818:40LGW - SEA

1 stop28h 15mSWISS

Deal found 11/6£494

Wed 16/707:15SEA - LGW

1 stop18h 45mVirgin Atlantic

Wed 23/712:00LGW - SEA

1 stop18h 48mVirgin Atlantic

Deal found 10/6£536

Fri 18/719:10SEA - LGW

1 stop30h 45mTurkish Airlines

Mon 28/705:20LGW - SEA

1 stop19h 55mTurkish Airlines

Deal found 12/6£620

Sat 26/705:19SEA - LGW

2 stops18h 51mMultiple Airlines

Thu 28/810:40LGW - SEA

2 stops20h 14mMultiple Airlines

Deal found 11/6£511

Sun 27/707:49SEA - LGW

2 stops18h 51mBritish Airways

Thu 28/810:40LGW - SEA

2 stops21h 00mBritish Airways

Deal found 10/6£492

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 13 June 2025.

Tue 28/1015:35SEA - LGW

1 stop12h 20mIcelandair

Deal found 12/6£187

Wed 9/717:30SEA - LGW

2 stops33h 25mMultiple Airlines

Deal found 12/6£188

Sat 4/1011:30SEA - LGW

1 stop14h 05mJetBlue

Deal found 12/6£261

Mon 23/614:05SEA - LGW

3 stops35h 20mWestJet

Deal found 10/6£293

Sun 27/713:45SEA - LGW

2 stops20h 05mSWISS

Deal found 12/6£308

Mon 8/906:05SEA - LGW

2 stops18h 05mAmerican Airlines

Deal found 12/6£317

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

Sun 24/8

23:30-14:35

1 stop31h 05m

London Gatwick

Mon 15/9

15:40-17:50

1 stop34h 10m

£488

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 20/8

10:55-17:55

2 stops23h 00m

London Gatwick

Tue 23/9

18:35-18:36

2 stops32h 01m

£491

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 27/7

07:49-10:40

2 stops18h 51m

London Gatwick

Thu 28/8

10:40-23:40

2 stops21h 00m

£492

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 7/9

15:45-19:55

2 stops20h 10m

London Gatwick

Fri 19/9

08:55-17:50

2 stops16h 55m

£497

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 13/8

05:30-10:00

2 stops20h 30m

London Gatwick

Sun 24/8

12:00-23:15

1 stop19h 15m

£510

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 8/8

11:30-09:35

1 stop14h 05m

London Gatwick

Sat 23/8

12:10-22:10

1 stop18h 00m

£529

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 9/11

19:00-16:10

1 stop37h 10m

London Gatwick

Wed 19/11

06:25-17:05

1 stop18h 40m

£587

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 28/10

15:35-10:55

1 stop12h 20m

£187

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 9/7

17:30-10:55

2 stops33h 25m

£188

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 4/10

11:30-09:35

1 stop14h 05m

£261

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Showing 1-10 of 13 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, February 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.

Rainfall in Gatwick by month

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.

Temperature in Gatwick by month

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).

Reviews of airlines servicing Gatwick

Get a feel of what it's like to fly with SWISS, Virgin Atlantic and JetBlue from Seattle to London by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

SWISS

7.5

Good

1,624 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

1,624 reviews

SWISS

7.5

Good

1,624 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

652 reviews

SWISS

7.5

Good

1,624 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.

JetBlue

7.3

Good

2,923 reviews

SWISS

7.5

Good

1,624 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.

Turkish Airlines

7.3

Good

3,849 reviews

SWISS

7.5

Good

1,624 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

1,624 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 £488. Other airlines that can offer you cheap pricing are SWISS, from £491, and British Airways, from £492. These flights start at 5% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Seattle to London Gatwick Airport one-way?
To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at £187. JetBlue flights start at £261 while deals on WestJet start at £293 one-way.
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, February 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

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Hayes

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Winchester

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Dartford

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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 £187

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 28/10. 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 13 June 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 13 June 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?

Rainfall in Gatwick by month

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

Temperature in Gatwick by month

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

Reviews of airlines servicing Gatwick

Get a feel of what it's like to fly with SWISS, Virgin Atlantic and JetBlue from Seattle to London by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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 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 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?

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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 13 June 2025.