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Cheap flights from Seattle to London Gatwick Airport from C$ 375

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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
20 Apr — 27 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 15 April 2025.

Round-trip from

C$ 854

One-way from

C$ 375

Popular in

June

Cheapest in

January

Average price

C$ 782
4/5-7/5
  • 4/5-7/5
  • 2 total stops
  • 34h 29m total
  • Seattle to London
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10/5
  • 10/5
  • 1 total stop
  • 34h 35m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 284 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 68 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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.

Sun 4/510:06 a.m.SEA - LGW
1 stop16h 49mMultiple Airlines
Wed 7/510:55 a.m.LGW - SEA
1 stop17h 40mMultiple Airlines
Deal found 15/4C$ 854
Mon 20/103:45 p.m.SEA - LGW
1 stop14h 50mIcelandair
Tue 28/1011:55 a.m.LGW - SEA
1 stop13h 05mIcelandair
Deal found 15/4C$ 862
Wed 7/512:45 p.m.SEA - LGW
2 stops21h 10mSWISS
Wed 14/56:35 p.m.LGW - SEA
2 stops31h 58mSWISS
Deal found 14/4C$ 869
Mon 4/87:20 a.m.SEA - LGW
1 stop18h 40mVirgin Atlantic
Thu 14/812:00 p.m.LGW - SEA
2 stops19h 55mVirgin Atlantic
Deal found 15/4C$ 901
Tue 8/77:20 a.m.SEA - LGW
1 stop18h 40mDelta
Fri 1/812:00 p.m.LGW - SEA
2 stops19h 55mDelta
Deal found 15/4C$ 1,030
Mon 28/47:10 p.m.SEA - LGW
1 stop19h 10mTurkish Airlines
Fri 11/75:15 p.m.LGW - SEA
1 stop25h 20mTurkish Airlines
Deal found 15/4C$ 1,110
Mon 26/57:16 a.m.SEA - LGW
1 stop18h 44mAir France
Tue 10/612:00 p.m.LGW - SEA
2 stops43h 53mAir France
Deal found 15/4C$ 1,118
Fri 16/56:45 p.m.SEA - LGW
2 stops30h 25mBritish Airways
Tue 3/610:25 a.m.LGW - SEA
1 stop20h 34mBritish Airways
Deal found 15/4C$ 1,403
Sun 21/97:05 a.m.SEA - LGW
2 stops42h 20mWestJet
Fri 26/910:45 a.m.LGW - SEA
2 stops41h 44mWestJet
Deal found 15/4C$ 1,404

Cheapflights Fare Finder

Customize 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 629,999 searches. Data last updated 15 April 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

Sun 4/5

10:06 a.m.-10:55 a.m.

1 stop16h 49m

London Gatwick

Wed 7/5

10:55 a.m.-8:35 p.m.

1 stop17h 40m

C$ 854

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 7/5

12:45 p.m.-5:55 p.m.

2 stops21h 10m

London Gatwick

Wed 14/5

6:35 p.m.-6:33 p.m.

2 stops31h 58m

C$ 869

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 29/4

7:00 p.m.-2:40 p.m.

1 stop11h 40m

London Gatwick

Fri 9/5

3:40 p.m.-8:40 p.m.

1 stop13h 00m

C$ 870

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 4/8

7:20 a.m.-10:00 a.m.

1 stop18h 40m

London Gatwick

Thu 14/8

12:00 p.m.-11:55 p.m.

2 stops19h 55m

C$ 901

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Tue 8/7

7:20 a.m.-10:00 a.m.

1 stop18h 40m

London Gatwick

Fri 1/8

12:00 p.m.-11:55 p.m.

2 stops19h 55m

C$ 1,030

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 28/4

7:10 p.m.-10:20 p.m.

1 stop19h 10m

London Gatwick

Fri 11/7

5:15 p.m.-10:35 a.m.

1 stop25h 20m

C$ 1,110

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 26/5

7:16 a.m.-10:00 a.m.

1 stop18h 44m

London Gatwick

Tue 10/6

12:00 p.m.-11:53 p.m.

2 stops43h 53m

C$ 1,118

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 16/5

6:45 p.m.-9:10 a.m.

2 stops30h 25m

London Gatwick

Tue 3/6

10:25 a.m.-10:59 p.m.

1 stop20h 34m

C$ 1,403

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 21/9

7:05 a.m.-9:25 a.m.

2 stops42h 20m

London Gatwick

Fri 26/9

10:45 a.m.-8:29 p.m.

2 stops41h 44m

C$ 1,404

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sat 10/5

4:20 p.m.-10:55 a.m.

1 stop34h 35m

C$ 375

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/4

Showing 1-10 of 18 results
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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 C$ 511). Flying from Seattle to London Gatwick Airport in July is currently the most expensive (average of C$ 793). 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 mm 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 15 April 2025.
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

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
7,918 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

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.
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

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
1,578 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

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
642 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

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
2,927 reviews
Delta
8.0
Very good
7,918 reviews
Check prices

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Overall

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?

    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 0 airlines have flights from the Seattle airport to London Gatwick. It is only a 18.4 km journey to Seattle/Tacoma Intl (SEA) from Seattle’s city centre.

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

    Currently priced at C$ 869, SWISS will fly you from Seattle to London Gatwick Airport and back. In addition to SWISS, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Icelandair and Virgin Atlantic - these airlines can fly you to your destination from C$ 870 and C$ 901, respectively. These flights start at 14% 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 C$ 413. SWISS flights start at C$ 577 while deals on WestJet start at C$ 634 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 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 C$ 511). Flying from Seattle to London Gatwick Airport in July is currently the most expensive (average of C$ 793). 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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Alternative routes for Seattle to Gatwick

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