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

Flying on Icelandair is currently your cheapest option to London Gatwick Airport, with prices starting at $579. Additional round-trip tickets that might be worth considering are offered by SWISS and Virgin Atlantic, with the lowest prices starting at $592 and $596, respectively. Icelandair is 17% cheaper than the average price of flights available within the next 90 days to this destination.

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

Travelers seeking maximum savings on their Seattle to London Gatwick Airport flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in London Gatwick Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Gatwick Airport when rainfall is around 1.6 in.

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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

What is the cheapest day to fly round-trip from Seattle to London Gatwick Airport?

Tuesday flights are found to be more expensive to fly from Seattle to London Gatwick Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to London Gatwick Airport.

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

To save up to 43% on this flight, we recommend booking at least 51 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to London Gatwick Airport from $862 1-2 weeks out and tickets from $989 for flights departing within the next 72 hours.

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

Flights from Seattle to London Gatwick Airport lean towards being more expensive in June. Prices are generally better when you fly from Seattle to London Gatwick Airport in October, with the cheapest ticket starting at $540.

What airport do you fly from for flights from Seattle to London Gatwick?

Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to London Gatwick. You should not have trouble finding flights to London Gatwick from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to London Gatwick per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Seattle airport to London Gatwick. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) 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 vacation 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.

$220+ Flights from Seattle to London Gatwick Airport

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Seattle to Gatwick with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Gatwick

Round-trip from	$577 (Mytrip)
One-way from	$220 (Icelandair)
Popular in	June
Cheapest in	January
Average price	$758

From Seattle/Tacoma Intl to London Gatwick

Search Deals

One-way flight from Seattle/Tacoma Intl to London Gatwick

Search Deals

Highest demand for flights based on searches. 11% potential increase in price ($88 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 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 July 3, 2025.

Thu 7/243:45 pmSEA - LGW

2 stops21h 40mMultiple Airlines

Fri 8/18:55 amLGW - SEA

2 stops19h 45mMultiple Airlines

Deal found 7/2

$577

Wed 8/1311:30 pmSEA - LGW

1 stop31h 10mIcelandair

Fri 9/53:40 pmLGW - SEA

1 stop13h 00mIcelandair

Deal found 7/1

$579

Mon 8/254:25 pmSEA - LGW

1 stop17h 25mSWISS

Tue 9/166:35 pmLGW - SEA

2 stops32h 01mSWISS

Deal found 6/30

$592

Sat 8/165:30 amSEA - LGW

2 stops20h 30mVirgin Atlantic

Sun 8/3112:00 pmLGW - SEA

1 stop19h 15mVirgin Atlantic

Deal found 7/2

$596

Sat 7/267:49 amSEA - LGW

2 stops18h 51mBritish Airways

Thu 8/2810:40 amLGW - SEA

2 stops21h 01mBritish Airways

Deal found 7/2

$606

Wed 8/137:18 amSEA - LGW

1 stop18h 42mDelta

Thu 8/2812:00 pmLGW - SEA

1 stop19h 15mDelta

Deal found 7/1

$611

Best flights from Seattle to Gatwick
Discover carefully curated flight deals from Seattle to Gatwick that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 3, 2025.

Thu 7/243:45 pmSEA - LGW

2 stops21h 40mMultiple Airlines

Fri 8/18:55 amLGW - SEA

2 stops19h 45mMultiple Airlines

Deal found 7/2

$577

Wed 8/1311:30 pmSEA - LGW

1 stop31h 10mIcelandair

Fri 9/53:40 pmLGW - SEA

1 stop13h 00mIcelandair

Deal found 7/1

$579

Mon 8/254:25 pmSEA - LGW

1 stop17h 25mSWISS

Tue 9/166:35 pmLGW - SEA

2 stops32h 01mSWISS

Deal found 6/30

$592

Sat 8/165:30 amSEA - LGW

2 stops20h 30mVirgin Atlantic

Sun 8/3112:00 pmLGW - SEA

1 stop19h 15mVirgin Atlantic

Deal found 7/2

$596

Sat 7/267:49 amSEA - LGW

2 stops18h 51mBritish Airways

Thu 8/2810:40 amLGW - SEA

2 stops21h 01mBritish Airways

Deal found 7/2

$606

Wed 8/137:18 amSEA - LGW

1 stop18h 42mDelta

Thu 8/2812:00 pmLGW - SEA

1 stop19h 15mDelta

Deal found 7/1

$611

Last-minute flights from Seattle to Gatwick
Discover last-minute flight deals from Seattle to Gatwick. Data last updated July 3, 2025 and is based on user searches.

Wed 7/97:15 amSEA - LGW

1 stop18h 45mDelta

Tue 7/2212:00 pmLGW - SEA

1 stop18h 48mDelta

Deal found 7/2

$770

Wed 7/97:10 pmSEA - LGW

1 stop19h 10mTurkish Airlines

Sun 7/132:00 pmLGW - SEA

1 stop35h 15mTurkish Airlines

Deal found 7/1

$1,028

Thu 7/1011:43 amSEA - LGW

1 stop13h 52mJetBlue

Tue 7/2212:10 pmLGW - SEA

1 stop17h 54mJetBlue

Deal found 7/2

$791

Sat 7/124:20 pmSEA - LGW

1 stop17h 30mSWISS

Thu 7/246:40 pmLGW - SEA

2 stops31h 56mSWISS

Deal found 6/30

$881

Sun 7/137:20 amSEA - LGW

2 stops28h 35mMultiple Airlines

Mon 7/218:40 pmLGW - SEA

2 stops32h 01mMultiple Airlines

Deal found 7/3

$823

Sun 7/1311:30 pmSEA - LGW

1 stop28h 15mIcelandair

Tue 7/293:40 pmLGW - SEA

1 stop13h 00mIcelandair

Deal found 7/2

$925

Sun 7/137:15 amSEA - LGW

1 stop18h 45mVirgin Atlantic

Tue 7/2212:00 pmLGW - SEA

2 stops18h 21mVirgin Atlantic

Deal found 7/1

$957

Thu 7/243:45 pmSEA - LGW

2 stops21h 40mMultiple Airlines

Fri 8/18:55 amLGW - SEA

2 stops19h 45mMultiple Airlines

Deal found 7/2

$577

Sat 7/267:49 amSEA - LGW

2 stops18h 51mBritish Airways

Thu 8/2810:40 amLGW - SEA

2 stops21h 01mBritish Airways

Deal found 7/2

$606

Wed 8/1311:30 pmSEA - LGW

1 stop31h 10mIcelandair

Fri 9/53:40 pmLGW - SEA

1 stop13h 00mIcelandair

Deal found 7/1

$579

Wed 8/137:18 amSEA - LGW

1 stop18h 42mDelta

Thu 8/2812:00 pmLGW - SEA

1 stop19h 15mDelta

Deal found 7/1

$611

Sat 8/165:30 amSEA - LGW

2 stops20h 30mVirgin Atlantic

Sun 8/3112:00 pmLGW - SEA

1 stop19h 15mVirgin Atlantic

Deal found 7/2

$596

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 July 3, 2025.

Mon 9/157:00 pmSEA - LGW

1 stop11h 35mIcelandair

Deal found 7/1

$220

Tue 9/303:45 pmSEA - LGW

2 stops20h 30mMultiple Airlines

Deal found 7/1

$224

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

Thu 7/24

3:45 pm-9:25 pm

2 stops21h 40m

London Gatwick

Fri 8/1

8:55 am-8:40 pm

2 stops19h 45m

$577

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 8/13

11:30 pm-2:40 pm

1 stop31h 10m

London Gatwick

Fri 9/5

3:40 pm-8:40 pm

1 stop13h 00m

$579

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 8/25

4:25 pm-5:50 pm

1 stop17h 25m

London Gatwick

Wed 9/17

6:35 pm-6:36 pm

2 stops32h 01m

$592

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 8/16

5:30 am-10:00 am

2 stops20h 30m

London Gatwick

Sun 8/31

12:00 pm-11:15 pm

1 stop19h 15m

$596

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 7/26

7:49 am-10:40 am

2 stops18h 51m

London Gatwick

Thu 8/28

10:40 am-11:41 pm

2 stops21h 01m

$606

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 8/13

11:25 am-10:00 am

1 stop14h 35m

London Gatwick

Wed 8/27

12:00 pm-11:15 pm

1 stop19h 15m

$611

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 9/15

7:00 pm-2:35 pm

1 stop11h 35m

$220

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 9/30

3:45 pm-8:15 pm

2 stops20h 30m

$224

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

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 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 Seattle to London Gatwick Airport

What is the cheapest month to book a flight from Seattle to London Gatwick Airport?

Currently, January is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of $568). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of $764). 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 SEA to LGW?

It’s optimal to fly from Seattle to London Gatwick Airport at noon. By choosing this option you can save up to 39% on the cost of your flight, compared to a flight in the morning.

How much does it cost to fly round-trip from Seattle to London Gatwick Airport?

Reviews of airlines servicing Gatwick

Read through reviews of airlines operating flights from Seattle to London Gatwick Airport, such as Delta, SWISS, and Virgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,982 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

7,982 reviews

Delta

8.0

Very good

7,982 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

1,654 reviews

Delta

8.0

Very good

7,982 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!

Virgin Atlantic

7.4

Good

654 reviews

Delta

8.0

Very good

7,982 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!

Icelandair

7.0

Good

514 reviews

Delta

8.0

Very good

7,982 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!

British Airways

6.6

Okay

7,093 reviews

Delta

8.0

Very good

7,982 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 from for flights from Seattle to London Gatwick?
Seattle/Tacoma Intl (SEA) is the airport you will fly out of if you book a flight from Seattle to London Gatwick. You should not have trouble finding flights to London Gatwick from Seattle/Tacoma Intl; the airport handles an average of 0 outbound flights to London Gatwick per day. You should also have plenty of airline options to choose from since 1 airline has flights from the Seattle airport to London Gatwick. It is only a 11.4 mi journey to Seattle/Tacoma Intl (SEA) from Seattle’s city center.
What are the cheapest airlines flying from Seattle to London Gatwick Airport round-trip?
Flying on Icelandair is currently your cheapest option to London Gatwick Airport, with prices starting at $579. Additional round-trip tickets that might be worth considering are offered by SWISS and Virgin Atlantic, with the lowest prices starting at $592 and $596, respectively. Icelandair is 17% cheaper than the average price of flights available within the next 90 days to this destination.
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 vacation 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, January is the cheapest month in which you can book a flight from Seattle to London Gatwick Airport (average of $568). Flying from Seattle to London Gatwick Airport in June is currently the most expensive (average of $764). 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

Hounslow

Hayes

Thornton Heath

Canterbury

Harrow

Dover

Gatwick

Orpington

Watford

Croydon

Folkestone

Borehamwood

Aylesbury

Chelmsford

Brentwood

Chichester

Arundel

Milton Keynes

Bishop's Stortford

Dartford

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Gatwick

Seattle to Heathrow flights

Seattle to London City flights

Portland to Heathrow flights

Seattle to Luton flights

Seattle to Stansted flights

Portland to Gatwick flights

Portland to London City flights

Spokane to Heathrow flights

Portland to Luton flights

Portland to Stansted flights

Spokane to Gatwick flights

Spokane to London City flights

Pasco to Heathrow flights

Walla Walla to Heathrow flights

Bellingham to Heathrow flights

Seattle to Southend flights

Portland to Southend flights

Bellingham to Gatwick flights

Other flights to Gatwick

Miami to Gatwick flights

John F Kennedy Intl to Gatwick flights

Los Angeles to Gatwick flights

Orlando to Gatwick flights

Boston to Gatwick flights

Tampa to Gatwick flights

London Gatwick Airport to Dublin flights

London Gatwick Airport to Milan Malpensa Airport flights

London Gatwick Airport to Rome Fiumicino Airport flights

London Gatwick Airport to Alicante flights

London Gatwick Airport to Paris Orly Airport flights

London Gatwick Airport to Prague flights

London Gatwick Airport to Paris Orly Airport flights

London Gatwick Airport to Budapest flights

London Gatwick Airport to Alicante flights

London Gatwick Airport to Málaga flights

London Gatwick Airport to Prague flights

London Gatwick Airport to Vienna flights

London Gatwick Airport to Berlin flights

London Gatwick Airport to Edinburgh flights

London Gatwick Airport to Amsterdam flights

London Gatwick Airport to Bilbao flights

London Gatwick Airport to Barcelona-El Prat Airport flights

Top airline flying from Seattle to Gatwick

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest$512	Average$658	FlexibilityNo cancel fee	On-time76%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$220+ Cheap flights from Seattle (SEA) to Gatwick (LGW)

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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Gatwick with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

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 July 3, 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 July 3, 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?

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

Find hourly flight availability from Seattle to Gatwick. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

How much does it cost to fly round-trip from Seattle to London Gatwick Airport?

Reviews of airlines servicing Gatwick

Read through reviews of airlines operating flights from Seattle to London Gatwick Airport, such as Delta, SWISS, and Virgin Atlantic. 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?

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?

Traveling 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.

Top airline flying from Seattle to Gatwick

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 July 3, 2025.