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Cheap flights from Seattle to London Gatwick Airport from C$ 403

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LGW
4 May — 11 May1
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 29 April 2025.

Round-trip from

C$ 878

One-way from

C$ 403

Popular in

June

Cheapest in

January

Average price

C$ 786
Icelandair
  • Icelandair
  • 26/9-4/10
  • 2 total stops
  • 24h 40m total
  • Seattle to London
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Icelandair
  • Icelandair
  • 5/10
  • 1 total stop
  • 14h 55m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 16% potential increase in price (C$ 280 potential increase over avg. RT price).
Search Deals
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 29 April 2025.

Fri 26/97:00 p.m.SEA - LGW
1 stop11h 40mIcelandair
Sat 4/103:40 p.m.LGW - SEA
1 stop13h 00mIcelandair
Deal found 28/4C$ 878
Wed 6/85:30 a.m.SEA - LGW
2 stops20h 30mVirgin Atlantic
Tue 19/812:00 p.m.LGW - SEA
1 stop18h 53mVirgin Atlantic
Deal found 28/4C$ 941
Mon 25/84:25 p.m.SEA - LGW
1 stop17h 25mSWISS
Tue 9/96:35 p.m.LGW - SEA
2 stops32h 01mSWISS
Deal found 28/4C$ 969
Wed 30/711:34 a.m.SEA - LGW
1 stop14h 26mDelta
Thu 14/812:00 p.m.LGW - SEA
1 stop18h 53mDelta
Deal found 27/4C$ 990
Sun 27/711:34 a.m.SEA - LGW
1 stop14h 26mMultiple Airlines
Thu 28/812:00 p.m.LGW - SEA
2 stops19h 55mMultiple Airlines
Deal found 27/4C$ 1,001
Wed 14/57:10 p.m.SEA - LGW
1 stop30h 45mTurkish Airlines
Tue 17/610:55 a.m.LGW - SEA
1 stop38h 20mTurkish Airlines
Deal found 27/4C$ 1,078
Fri 6/611:28 a.m.SEA - LGW
1 stop14h 07mJetBlue
Sat 14/612:10 p.m.LGW - SEA
1 stop17h 43mJetBlue
Deal found 29/4C$ 1,131
Wed 27/87:35 p.m.SEA - LGW
2 stops29h 35mBritish Airways
Wed 10/98:40 p.m.LGW - SEA
2 stops31h 24mBritish Airways
Deal found 28/4C$ 1,316

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 29 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

Fri 26/9

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

1 stop11h 40m

London Gatwick

Sat 4/10

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

1 stop13h 00m

C$ 878

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 6/8

5:30 a.m.-10:00 a.m.

2 stops20h 30m

London Gatwick

Tue 19/8

12:00 p.m.-10:53 p.m.

1 stop18h 53m

C$ 941

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 25/8

4:25 p.m.-5:50 p.m.

1 stop17h 25m

London Gatwick

Wed 10/9

6:35 p.m.-6:36 p.m.

2 stops32h 01m

C$ 969

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 30/7

11:34 a.m.-10:00 a.m.

1 stop14h 26m

London Gatwick

Thu 14/8

12:00 p.m.-10:53 p.m.

1 stop18h 53m

C$ 990

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 27/7

11:34 a.m.-10:00 a.m.

1 stop14h 26m

London Gatwick

Thu 28/8

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

2 stops19h 55m

C$ 1,001

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 14/5

7:10 p.m.-9:55 a.m.

1 stop30h 45m

London Gatwick

Tue 17/6

10:55 a.m.-5:15 p.m.

1 stop38h 20m

C$ 1,078

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Fri 6/6

11:28 a.m.-9:35 a.m.

1 stop14h 07m

London Gatwick

Sat 14/6

12:10 p.m.-9:53 p.m.

1 stop17h 43m

C$ 1,131

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Wed 27/8

7:35 p.m.-9:10 a.m.

2 stops29h 35m

London Gatwick

Wed 10/9

8:40 p.m.-8:04 p.m.

2 stops31h 24m

C$ 1,316

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Sun 5/10

3:45 p.m.-2:40 p.m.

1 stop14h 55m

C$ 403

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Thu 17/7

7:55 p.m.-10:55 a.m.

1 stop31h 00m

C$ 428

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/4

Showing 1-10 of 20 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 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 29 April 2025.
Delta
8.0
Very good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

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
7,929 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

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
1,588 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

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
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

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
2,922 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

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
3,788 reviews
Delta
8.0
Very good
7,929 reviews
Check prices

Overall

8.0

Entertainment

7.9

Food

7.3

Crew

8.5

Comfort

7.9

Boarding

8.2

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$ 878, Icelandair will fly you from Seattle to London Gatwick Airport and back. In addition to Icelandair, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Virgin Atlantic and SWISS - these airlines can fly you to your destination from C$ 941 and C$ 969, respectively. These flights start at 13% 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$ 403. JetBlue flights start at C$ 580 while deals on Virgin Atlantic start at C$ 586 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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Can Cheapflights notify me if prices for flights from Seattle to Gatwick become cheaper?

Yes, Cheapflights offers price alerts on Seattle to Gatwick flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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