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 £485. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £486, and Icelandair, from £489. These flights start at 6% 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 £186. JetBlue flights start at £272 while deals on SWISS start at £297 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 £620, or £729 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 £576 for the month, but tickets can be as low as £399. 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.

£186+ Flights from Seattle to London Gatwick Airport

Cheap flight deals from Seattle to Gatwick

Round-trip from	£485
One-way from	£186
Popular in	June
Cheapest in	January
Average price	£670

SWISS
11/8-24/9
4 total stops
52h 06m total
Seattle to London

Search Deals

Icelandair
20/7
1 total stop
28h 15m 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 16 June 2025.

Mon 11/813:45SEA - LGW

2 stops20h 05mSWISS

Mon 22/918:35LGW - SEA

2 stops32h 01mSWISS

Deal found 14/6£485

Tue 29/705:30SEA - LGW

2 stops20h 30mVirgin Atlantic

Tue 5/812:00LGW - SEA

1 stop18h 48mVirgin Atlantic

Deal found 13/6£486

Mon 25/815:45SEA - LGW

1 stop12h 00mIcelandair

Sun 21/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 14/6£489

Tue 5/811:34SEA - LGW

1 stop14h 26mDelta

Sat 16/812:00LGW - SEA

1 stop19h 15mDelta

Deal found 15/6£494

Wed 27/819:00SEA - LGW

1 stop11h 40mMultiple Airlines

Sun 14/910:55LGW - SEA

1 stop18h 41mMultiple Airlines

Deal found 14/6£497

Wed 13/811:30SEA - LGW

1 stop14h 05mJetBlue

Sun 24/812:10LGW - SEA

1 stop18h 00mJetBlue

Deal found 14/6£530

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 16 June 2025.

Mon 11/813:45SEA - LGW

2 stops20h 05mSWISS

Wed 24/918:35LGW - SEA

2 stops32h 01mSWISS

Deal found 14/6£485

Tue 29/705:30SEA - LGW

2 stops20h 30mVirgin Atlantic

Tue 5/812:00LGW - SEA

1 stop18h 48mVirgin Atlantic

Deal found 13/6£486

Mon 25/815:45SEA - LGW

1 stop12h 00mIcelandair

Sun 21/915:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 14/6£489

Tue 5/811:34SEA - LGW

1 stop14h 26mDelta

Sat 16/812:00LGW - SEA

1 stop19h 15mDelta

Deal found 15/6£494

Wed 27/819:00SEA - LGW

1 stop11h 40mMultiple Airlines

Sun 14/910:55LGW - SEA

1 stop18h 41mMultiple Airlines

Deal found 14/6£497

Wed 13/811:30SEA - LGW

1 stop14h 05mJetBlue

Sun 24/812:10LGW - SEA

1 stop18h 00mJetBlue

Deal found 14/6£530

Last-minute flights from Seattle to Gatwick
Discover last-minute flight deals from Seattle to Gatwick. Data last updated 16 June 2025 and is based on user searches.

Sat 21/614:55SEA - LGW

3 stops35h 50mMultiple Airlines

Tue 24/611:35LGW - SEA

3 stops29h 46mMultiple Airlines

Deal found 14/6£706

Sat 21/611:30SEA - LGW

1 stop14h 05mJetBlue

Fri 4/712:10LGW - SEA

1 stop17h 43mJetBlue

Deal found 14/6£802

Mon 23/611:30SEA - LGW

1 stop14h 05mTAP AIR PORTUGAL

Fri 4/712:10LGW - SEA

1 stop17h 43mTAP AIR PORTUGAL

Deal found 15/6£1,094

Mon 23/616:25SEA - LGW

1 stop17h 25mSWISS

Thu 7/818:40LGW - SEA

2 stops31h 56mSWISS

Deal found 14/6£1,212

Tue 24/615:45SEA - LGW

1 stop14h 55mIcelandair

Thu 7/815:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 14/6£542

Wed 25/608:40SEA - LGW

2 stops40h 45mWestJet

Tue 1/710:45LGW - SEA

2 stops41h 43mWestJet

Deal found 15/6£1,237

Wed 25/611:01SEA - LGW

2 stops38h 54mTurkish Airlines

Fri 4/714:00LGW - SEA

2 stops40h 42mTurkish Airlines

Deal found 15/6£1,423

Tue 8/707:15SEA - LGW

1 stop18h 45mDelta

Thu 17/712:00LGW - SEA

2 stops19h 59mDelta

Deal found 15/6£662

Mon 14/716:25SEA - LGW

1 stop17h 25mSWISS

Sun 10/818:40LGW - SEA

1 stop28h 15mSWISS

Deal found 14/6£543

Mon 21/715:45SEA - LGW

1 stop12h 00mIcelandair

Fri 1/815:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 14/6£510

Thu 24/711:43SEA - LGW

1 stop13h 52mJetBlue

Sun 27/712:10LGW - SEA

1 stop17h 54mJetBlue

Deal found 16/6£677

Fri 25/715:45SEA - LGW

2 stops18h 35mMultiple Airlines

Wed 30/708:50LGW - SEA

2 stops17h 00mMultiple Airlines

Deal found 14/6£512

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 16 June 2025.

Sun 20/723:30SEA - LGW

1 stop28h 15mIcelandair

Deal found 15/6£186

Sat 26/715:45SEA - LGW

2 stops33h 10mMultiple Airlines

Deal found 14/6£188

Wed 23/711:43SEA - LGW

1 stop13h 52mJetBlue

Deal found 16/6£272

Mon 1/916:25SEA - LGW

1 stop17h 25mSWISS

Deal found 16/6£297

Fri 12/907:05SEA - LGW

3 stops18h 20mWestJet

Deal found 14/6£303

Mon 28/705:30SEA - LGW

2 stops20h 30mVirgin Atlantic

Deal found 15/6£317

Mon 8/906:05SEA - LGW

2 stops18h 05mAmerican Airlines

Deal found 14/6£318

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

Mon 11/8

13:45-17:50

2 stops20h 05m

London Gatwick

Wed 24/9

18:35-18:36

2 stops32h 01m

£485

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 29/7

05:30-10:00

2 stops20h 30m

London Gatwick

Tue 5/8

12:00-22:48

1 stop18h 48m

£486

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 25/8

15:45-11:45

1 stop12h 00m

London Gatwick

Sun 21/9

15:40-20:40

1 stop13h 00m

£489

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 5/8

11:34-10:00

1 stop14h 26m

London Gatwick

Sat 16/8

12:00-23:15

1 stop19h 15m

£494

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 27/8

19:00-14:40

1 stop11h 40m

London Gatwick

Sun 14/9

10:55-21:36

1 stop18h 41m

£497

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 13/8

11:30-09:35

1 stop14h 05m

London Gatwick

Sun 24/8

12:10-22:10

1 stop18h 00m

£530

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 20/7

23:30-11:45

1 stop28h 15m

£186

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 26/7

15:45-08:55

2 stops33h 10m

£188

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 23/7

11:43-09:35

1 stop13h 52m

£272

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 1/9

16:25-17:50

1 stop17h 25m

£297

Flights are sorted by cheapest return flights first.

Deals found on 15/6

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 Delta, SWISS and Virgin Atlantic 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.

Delta

8.0

Very Good

7,963 reviews

Check prices

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

7,963 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

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

1,628 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

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!

Virgin Atlantic

7.4

Good

652 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

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

2,923 reviews

Delta

8.0

Very Good

7,963 reviews

Check prices

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

7,963 reviews

Check prices

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 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 £485. Other airlines that can offer you cheap pricing are Virgin Atlantic, from £486, and Icelandair, from £489. These flights start at 6% 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 £186. JetBlue flights start at £272 while deals on SWISS start at £297 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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Fly with Cheapflights

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 £186

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 20/7. 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 16 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 16 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 Delta, SWISS and Virgin Atlantic 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 16 June 2025.