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Cheap flights from Seattle to London Gatwick Airport from C$ 456

SEA — LGW
11 Oct — 18 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Seattle to Gatwick

Enter your travel dates to find the best prices.

Cheapest flights from Seattle to Gatwick

Thu 17/91:30 p.m. -
1 stop11h 55m
Thu 24/910:25 a.m. -
1 stop15h 23m
Deal found 9/9C$ 1,096
Tue 29/97:00 p.m. -
1 stop11h 40m
Wed 7/103:40 p.m. -
1 stop34h 15m
Deal found 6/9C$ 1,105
Sun 13/123:25 p.m. -
1 stop16h 20m
Mon 21/1210:00 a.m. -
1 stop13h 13m
Deal found 8/9C$ 1,140
Mon 9/1111:20 a.m. -
2 stops20h 25m
Mon 16/1110:00 a.m. -
1 stop13h 14m
Deal found 8/9C$ 1,144
Sun 20/91:30 p.m. -
1 stop18h 30m
Sat 12/1210:00 a.m. -
2 stops20h 05m
Deal found 8/9C$ 1,152
Fri 13/113:25 p.m. -
1 stop16h 20m
Thu 19/114:45 p.m. -
1 stop30h 29m
Deal found 9/9C$ 1,155
Sat 19/91:30 p.m. -
1 stop11h 50m
Tue 18/59:55 a.m. -
2 stops20h 09m
Deal found 8/9C$ 1,158
Thu 5/114:05 p.m. -
1 stop15h 40m
Sun 8/1110:00 a.m. -
1 stop13h 14m
Deal found 8/9C$ 1,165
Thu 5/115:50 p.m. -
1 stop13h 10m
Mon 9/1110:25 a.m. -
1 stop13h 30m
Deal found 6/9C$ 1,179
Wed 14/103:40 p.m. -
1 stop15h 00m
Fri 13/1111:55 a.m. -
1 stop13h 05m
Deal found 10/9C$ 1,180
Thu 3/1210:25 a.m. -
2 stops21h 20m
Sun 13/1210:00 a.m. -
2 stops20h 09m
Deal found 9/9C$ 1,185
Mon 19/106:40 p.m. -
1 stop13h 20m
Fri 13/1110:00 a.m. -
1 stop13h 14m
Deal found 10/9C$ 1,192

Find flight deals from Seattle to Gatwick

Round-trip from

C$ 1,068

One-way from

C$ 456

Popular in

July

Cheapest in

November

Average price

C$ 1,214
Icelandair
  • Icelandair
  • 5/1-13/1
  • 2 total stops
  • 25h 25m total
  • Seattle to London
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Delta
  • Delta
  • 8/12-31/12
  • 1 total stop
  • 15h 40m total
  • Seattle to London
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (C$ 445 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2026
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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

Cheapest round-trip

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Wed 6/1

3:25 p.m.-3:45 p.m.

1 stop16h 20m

London Gatwick

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 456

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Tue 8/12

4:05 p.m.-3:45 p.m.

1 stop15h 40m

London Gatwick

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 456

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Mon 28/12

3:25 p.m.-3:45 p.m.

1 stop16h 20m

London Gatwick

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 500

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Fri 9/10

3:27 p.m.-10:00 a.m.

1 stop34h 33m

London Gatwick

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 524

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Wed 28/10

4:20 p.m.-3:45 p.m.

1 stop16h 25m

London Gatwick

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 524
Quickest round-trip

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Mon 5/10

6:40 p.m.-4:00 p.m.

1 stop13h 20m

London Gatwick

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 524

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Wed 11/11

3:25 p.m.-3:45 p.m.

1 stop16h 20m

London Gatwick

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 524

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sat 27/2

4:05 p.m.-3:45 p.m.

1 stop15h 40m

London Gatwick

Wed 31/12

12:00 a.m.-3:00 p.m.

Nonstop0h 00m

C$ 525

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sun 1/11

1:16 p.m.-5:50 p.m.

2 stops20h 34m

London Gatwick

Sun 15/11

8:40 a.m.-11:07 p.m.

2 stops22h 27m

C$ 1,278

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Sun 24/1

7:50 a.m.-3:45 p.m.

2 stops23h 55m

London Gatwick

Sun 31/1

10:00 a.m.-3:13 p.m.

1 stop13h 13m

C$ 1,282

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 19 resultsSorted by cheapest first
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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

Cheapflights Insights

Everything you need to know about your flight from Seattle to London Gatwick Airport

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

Airfare is typical for this route at the moment.

Seattle to London Gatwick Airport flights typically cost between C$ 800 and C$ 1,326 in January.
The cheapest round-trip price found within the last 5 days was C$ 1,068 on Icelandair (5 Jan-13 Jan).

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 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.

  • How long is the flight from Seattle to London Gatwick Airport?

    There are many flights that can get you from Seattle to London Gatwick Airport in 20h 34m. Fly via SWISS or Virgin Atlantic to get the fastest option. Seattle and London Gatwick Airport are separated by a distance of 7736 km. Both multi-stop and direct flights can be found to your destination and back.

  • 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.

See more FAQs

Travelling to a place near London Gatwick Airport?

Book flights to London Gatwick Airport if you plan to visit one of these locations
Gatwick
Romford
Twickenham
Ilford
Bromley
Sutton
Luton
Slough
Marlow
Cobham
Hounslow
Watford
High Wycombe

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Gatwick

Seattle to Heathrow flights

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