Find flights
When to book
Airlines
FAQs

Cheap flights from Seattle to London Gatwick Airport from £206

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 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
30 Mar — 6 Apr1
1 adult

Cheap flight deals from Seattle to Gatwick

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Gatwick (LGW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 25 March 2025.

Round-trip from

£454

One-way from

£206

Popular in

June

Cheapest in

January

Average price

£532
Icelandair
  • Icelandair
  • 2/5-16/5
  • 2 total stops
  • 24h 40m total
  • Seattle to London
Search Deals
Icelandair
  • Icelandair
  • 21/9
  • 1 total stop
  • 11h 40m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£118 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£25 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 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 25 March 2025.

Fri 2/519:00SEA - LGW
1 stop11h 40mIcelandair
Fri 16/515:40LGW - SEA
1 stop13h 00mIcelandair
Deal found 25/3£454
Wed 30/415:45SEA - LGW
1 stop12h 00mMultiple Airlines
Sun 4/509:50LGW - SEA
2 stops35h 08mMultiple Airlines
Deal found 24/3£455
Wed 23/412:45SEA - LGW
2 stops21h 10mSWISS
Wed 7/518:35LGW - SEA
2 stops31h 58mSWISS
Deal found 24/3£494
Mon 26/505:30SEA - LGW
2 stops20h 30mVirgin Atlantic
Thu 12/612:00LGW - SEA
2 stops19h 53mVirgin Atlantic
Deal found 24/3£558
Mon 26/507:16SEA - LGW
1 stop18h 44mDelta
Wed 11/612:00LGW - SEA
1 stop18h 49mDelta
Deal found 24/3£567
Tue 27/506:20SEA - LGW
2 stops18h 15mAmerican Airlines
Tue 10/612:20LGW - SEA
2 stops20h 24mAmerican Airlines
Deal found 24/3£571

Cheapflights Fare Finder

Customise your flight search to find flights from Seattle to Gatwick that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 25 March 2025.
Use the filters below to find and compare flights from Seattle to London Gatwick Airport that are best for you.

Fly from

Seattle

Fly to

Gatwick

Route

Depart

Return

Price

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 2/5

19:00-14:40

1 stop11h 40m

London Gatwick

Fri 16/5

15:40-20:40

1 stop13h 00m

£454

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 30/4

15:45-11:45

1 stop12h 00m

London Gatwick

Sun 4/5

09:50-12:58

2 stops35h 08m

£455

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 23/4

12:45-17:55

2 stops21h 10m

London Gatwick

Wed 7/5

18:35-18:33

2 stops31h 58m

£494

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 26/5

05:30-10:00

2 stops20h 30m

London Gatwick

Thu 12/6

12:00-23:53

2 stops19h 53m

£558

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 26/5

07:16-10:00

1 stop18h 44m

London Gatwick

Wed 11/6

12:00-22:49

1 stop18h 49m

£567

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 27/5

06:20-08:35

2 stops18h 15m

London Gatwick

Tue 10/6

12:20-00:44

2 stops20h 24m

£571

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 17/9

19:10-09:55

1 stop30h 45m

London Gatwick

Sat 27/9

13:50-17:15

1 stop35h 25m

£622

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 21/9

19:00-14:40

1 stop11h 40m

£206

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 28/4

20:56-06:20

3 stops25h 24m

£226

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 21/9

13:45-17:50

2 stops20h 05m

£338

Flights are sorted by cheapest return flights first.

Deals found on 23/3

Showing 1-10 of 14 results
1
2

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

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

Use this chart to determine the optimal time to book a return flight from Seattle to Gatwick. Price data was last updated on 21 March 2025.

To ensure you get the cheapest price possible for a flight from Seattle to London Gatwick Airport, you should look to book at least 27 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

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

Plan your trip to Gatwick by taking into account the average temperature totals 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 insights into the airlines that provide service to Gatwick. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Gatwick. Reviews last updated 25 March 2025.
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
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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
7,890 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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
1,569 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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
634 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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
2,923 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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
3,745 reviews
Delta
8.0
Very Good
7,890 reviews
Check prices

Boarding

8.2

Crew

8.5

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

8.0

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

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?

    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 £454. Other airlines that can offer you cheap pricing are SWISS, from £494, and Virgin Atlantic, from £558. These flights start at 20% 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 £338 while deals on WestJet start at £350 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

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Hounslow
Deal
Milton Keynes
Gatwick
Croydon
Luton
Slough
Eastbourne
Wembley
Hayes
Ilford
Crawley
Southend-on-Sea
Winchester
Maidstone
Ipswich
Watford
Southall
Dartford
Folkestone

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.

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?

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.

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.