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 £457. Other airlines that can offer you cheap pricing are SWISS, from £475, and Delta, from £487. These flights start at 17% 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 £206. SWISS flights start at £315 while deals on JetBlue start at £337 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 £647, or £731 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 £604 for the month, but tickets can be as low as £423. 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.

£203+ Flights from Seattle to London Gatwick Airport

Cheap flight deals from Seattle to Gatwick

Round-trip from	£457
One-way from	£203
Popular in	June
Cheapest in	January
Average price	£427

Icelandair
7/5-14/5
2 total stops
45h 50m total
Seattle to London

Search Deals

1/5
1 total stop
31h 20m total
Seattle to London

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£84 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£21 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 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 15 April 2025.

Wed 7/519:00SEA - LGW

1 stop11h 40mIcelandair

Wed 14/515:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 15/4£457

Sat 10/516:20SEA - LGW

1 stop34h 35mMultiple Airlines

Tue 13/510:00LGW - SEA

2 stops45h 49mMultiple Airlines

Deal found 15/4£459

Wed 7/512:45SEA - LGW

2 stops21h 10mSWISS

Wed 14/518:35LGW - SEA

2 stops31h 58mSWISS

Deal found 14/4£475

Wed 23/711:15SEA - LGW

1 stop14h 45mDelta

Wed 13/812:00LGW - SEA

1 stop18h 53mDelta

Deal found 14/4£487

Tue 19/805:45SEA - LGW

2 stops20h 15mVirgin Atlantic

Thu 28/812:00LGW - SEA

2 stops19h 55mVirgin Atlantic

Deal found 14/4£491

Wed 7/505:20SEA - LGW

2 stops18h 50mAmerican Airlines

Thu 15/512:20LGW - SEA

2 stops20h 25mAmerican Airlines

Deal found 14/4£506

Mon 28/419:10SEA - LGW

1 stop19h 10mTurkish Airlines

Wed 9/717:15LGW - SEA

1 stop25h 20mTurkish Airlines

Deal found 15/4£596

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 April 2025.

Wed 7/519:00SEA - LGW

1 stop11h 40mIcelandair

Wed 14/515:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 15/4£457

Sat 10/516:20SEA - LGW

1 stop34h 35mMultiple Airlines

Tue 13/510:00LGW - SEA

2 stops45h 49mMultiple Airlines

Deal found 15/4£459

Wed 7/512:45SEA - LGW

2 stops21h 10mSWISS

Wed 14/518:35LGW - SEA

2 stops31h 58mSWISS

Deal found 14/4£475

Wed 23/711:15SEA - LGW

1 stop14h 45mDelta

Wed 13/812:00LGW - SEA

1 stop18h 53mDelta

Deal found 14/4£487

Tue 19/805:45SEA - LGW

2 stops20h 15mVirgin Atlantic

Thu 28/812:00LGW - SEA

2 stops19h 55mVirgin Atlantic

Deal found 14/4£491

Wed 7/505:20SEA - LGW

2 stops18h 50mAmerican Airlines

Thu 15/512:20LGW - SEA

2 stops20h 25mAmerican Airlines

Deal found 14/4£506

Mon 28/419:10SEA - LGW

1 stop19h 10mTurkish Airlines

Wed 9/717:15LGW - SEA

1 stop25h 20mTurkish Airlines

Deal found 15/4£596

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

Mon 21/418:45SEA - LGW

2 stops30h 40mBritish Airways

Wed 30/411:10LGW - SEA

2 stops37h 49mBritish Airways

Deal found 14/4£708

Wed 23/406:58SEA - LGW

2 stops19h 42mAmerican Airlines

Sat 10/512:20LGW - SEA

2 stops20h 25mAmerican Airlines

Deal found 15/4£546

Wed 23/410:50SEA - LGW

2 stops23h 05mSWISS

Wed 30/418:35LGW - SEA

2 stops36h 07mSWISS

Deal found 14/4£626

Thu 24/415:45SEA - LGW

1 stop14h 55mIcelandair

Fri 9/515:40LGW - SEA

1 stop13h 00mIcelandair

Deal found 14/4£491

Thu 24/415:45SEA - LGW

1 stop14h 55mMultiple Airlines

Sun 4/510:55LGW - SEA

1 stop34h 30mMultiple Airlines

Deal found 13/4£538

Thu 24/423:55SEA - LGW

2 stops31h 45mTAP AIR PORTUGAL

Thu 1/521:20LGW - SEA

2 stops57h 06mTAP AIR PORTUGAL

Deal found 14/4£1,411

Mon 28/419:10SEA - LGW

1 stop19h 10mTurkish Airlines

Wed 9/717:15LGW - SEA

1 stop25h 20mTurkish Airlines

Deal found 15/4£596

Wed 7/519:00SEA - LGW

1 stop11h 40mIcelandair

Wed 14/515:40LGW - SEA

1 stop34h 10mIcelandair

Deal found 15/4£457

Wed 7/512:45SEA - LGW

2 stops21h 10mSWISS

Wed 14/518:35LGW - SEA

2 stops31h 58mSWISS

Deal found 14/4£475

Wed 7/505:20SEA - LGW

2 stops18h 50mAmerican Airlines

Thu 15/512:20LGW - SEA

2 stops20h 25mAmerican Airlines

Deal found 14/4£506

Sat 10/516:20SEA - LGW

1 stop34h 35mMultiple Airlines

Tue 13/510:00LGW - SEA

2 stops45h 49mMultiple Airlines

Deal found 15/4£459

Tue 27/507:15SEA - LGW

1 stop18h 45mVirgin Atlantic

Wed 4/612:00LGW - SEA

2 stops18h 23mVirgin Atlantic

Deal found 14/4£562

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 15 April 2025.

Thu 1/519:35SEA - LGW

1 stop31h 20mMultiple Airlines

Deal found 14/4£203

Thu 10/719:00SEA - LGW

1 stop11h 40mIcelandair

Deal found 15/4£206

Tue 5/813:45SEA - LGW

2 stops20h 05mSWISS

Deal found 15/4£315

Wed 10/911:30SEA - LGW

1 stop14h 05mJetBlue

Deal found 13/4£337

Fri 30/508:25SEA - LGW

2 stops41h 00mWestJet

Deal found 15/4£347

Sat 20/922:32SEA - LGW

2 stops25h 18mAmerican Airlines

Deal found 14/4£380

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

Wed 7/5

19:00-14:40

1 stop11h 40m

London Gatwick

Wed 14/5

15:40-17:50

1 stop34h 10m

£457

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 10/5

16:20-10:55

1 stop34h 35m

London Gatwick

Tue 13/5

10:00-23:49

2 stops45h 49m

£459

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 7/5

12:45-17:55

2 stops21h 10m

London Gatwick

Wed 14/5

18:35-18:33

2 stops31h 58m

£475

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 23/7

11:15-10:00

1 stop14h 45m

London Gatwick

Wed 13/8

12:00-22:53

1 stop18h 53m

£487

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 19/8

05:45-10:00

2 stops20h 15m

London Gatwick

Thu 28/8

12:00-23:55

2 stops19h 55m

£491

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 7/5

05:20-08:10

2 stops18h 50m

London Gatwick

Thu 15/5

12:20-00:45

2 stops20h 25m

£506

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 28/4

19:10-22:20

1 stop19h 10m

London Gatwick

Wed 9/7

17:15-10:35

1 stop25h 20m

£596

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 1/5

19:35-10:55

1 stop31h 20m

£203

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 10/7

19:00-14:40

1 stop11h 40m

£206

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 5/8

13:45-17:50

2 stops20h 05m

£315

Flights are sorted by cheapest return flights first.

Deals found on 14/4

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 £101). 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

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,917 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,578 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Virgin Atlantic

7.4

Good

642 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

JetBlue

7.3

Good

2,926 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Turkish Airlines

7.3

Good

3,760 reviews

Delta

8.0

Very Good

7,917 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 £457. Other airlines that can offer you cheap pricing are SWISS, from £475, and Delta, from £487. These flights start at 17% 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 £206. SWISS flights start at £315 while deals on JetBlue start at £337 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 £101). 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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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 £203

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 1/5. 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 April 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 April 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 15 April 2025.