S$1,368 Cheap Flights from London to Seattle

View S$1,368 flight on Thu, 28 Aug, 2025Opens in a new window

Popular airlines from Gatwick Airport (LGW) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from London to Seattle (LGW-SEA)

Prices were available within the past 7 days and start at S$1,368 for one-way flights and S$899 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, 18 Aug - Mon, 25 Aug
LGW
London
SEA
Seattle
S$899 Return, found 4 days ago
S$899
Return
found 4 days ago
Select Delta flight, departing Mon, 18 Aug from London to Seattle, returning Mon, 25 Aug, priced at S$899 found 4 days ago
Virgin Atlantic
Mon, 18 Aug - Mon, 25 Aug
LGW
London
SEA
Seattle
S$899 Return, found 4 days ago
S$899
Return
found 4 days ago
Select Virgin Atlantic flight, departing Mon, 18 Aug from London to Seattle, returning Mon, 25 Aug, priced at S$899 found 4 days ago
American Airlines
Mon, 18 Aug - Mon, 25 Aug
LGW
London
SEA
Seattle
S$920 Return, found 4 days ago
S$920
Return
found 4 days ago
Select American Airlines flight, departing Mon, 18 Aug from London to Seattle, returning Mon, 25 Aug, priced at S$920 found 4 days ago
American Airlines
Mon, 18 Aug - Mon, 25 Aug
LGW
London
SEA
Seattle
S$924 Return, found 4 days ago
S$924
Return
found 4 days ago
Select American Airlines flight, departing Mon, 18 Aug from London to Seattle, returning Mon, 25 Aug, priced at S$924 found 4 days ago
KLM
Mon, 18 Aug - Mon, 25 Aug
LGW
London
SEA
Seattle
S$934 Return, found 4 days ago
S$934
Return
found 4 days ago
Select KLM flight, departing Mon, 18 Aug from London to Seattle, returning Mon, 25 Aug, priced at S$934 found 4 days ago
American Airlines
Mon, 18 Aug - Mon, 25 Aug
LGW
London
SEA
Seattle
S$939 Return, found 4 days ago
S$939
Return
found 4 days ago
Select American Airlines flight, departing Mon, 18 Aug from London to Seattle, returning Mon, 25 Aug, priced at S$939 found 4 days ago
American Airlines
Mon, 18 Aug - Mon, 25 Aug
LGW
London
SEA
Seattle
S$943 Return, found 4 days ago
S$943
Return
found 4 days ago
Select American Airlines flight, departing Mon, 18 Aug from London to Seattle, returning Mon, 25 Aug, priced at S$943 found 4 days ago
American Airlines
Mon, 18 Aug - Mon, 25 Aug
LGW
London
SEA
Seattle
S$944 Return, found 4 days ago
S$944
Return
found 4 days ago
Select American Airlines flight, departing Mon, 18 Aug from London to Seattle, returning Mon, 25 Aug, priced at S$944 found 4 days ago
American Airlines
Mon, 18 Aug - Mon, 25 Aug
LGW
London
SEA
Seattle
S$946 Return, found 4 days ago
S$946
Return
found 4 days ago
Select American Airlines flight, departing Mon, 18 Aug from London to Seattle, returning Mon, 25 Aug, priced at S$946 found 4 days ago
Swiss International Air Lines
Mon, 20 Oct - Fri, 24 Oct
LGW
London
SEA
Seattle
S$961 Return, found 4 days ago
S$961
Return
found 4 days ago
Select Swiss International Air Lines flight, departing Mon, 20 Oct from London to Seattle, returning Fri, 24 Oct, priced at S$961 found 4 days ago
London to Seattle route information
Origin airport
Gatwick
Destination airport
Seattle - Tacoma Intl.
Return price
S$898
Distance
7697 km

Flights from Gatwick to Seattle

There are several airlines that operate frequent flights from London (LGW) to Seattle (SEA) including

  • Icelandair with 8 flights a week
  • British Airways with 6 flights a week
  • Virgin Atlantic with 5 flights a week
  • WestJet with 5 flights a week
  • Delta Air Lines with 4 flights a week

The earliest flight leaves Gatwick Airport at 07:20 and arrives at Seattle Tacoma Intl. Airport at 13:57. The last flight of the day departs London at 14:00 and arrives at Seattle at 21:49.

The flight distance from London to Seattle is about 8676 km, the shortest flight is 12 hours 10 minutes with WestJet.

Expedia lets you search across the largest number of airlines and Seattle flights, which means that you’ll be able to find a great flight deal at the perfect travel date and time. Our simple-to-use booking engine makes looking for terrific bargains easy and hassle-free; just enter your travel dates and departure city, and let Expedia do the rest! Adjust your travel dates and explore connecting flights to find an even better deal on your Gatwick Seattle flight!

Browse through dozens of options and rest assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your Gatwick to Seattle trip. There’s simply no substitute for great prices suited to your travel needs and backed by excellent customer support.

Combine your Seattle flight with a hotel and/or car rental for a package deal designed to save you even more money! Discover additional savings by booking in advance or find a last minute deal. There are tons of ways to save on your flights from Gatwick to Seattle with Expedia. Use us as your stop travel destination and have the confidence that you’re getting a bargain!

Frequently asked questions

How much is a flight from London Gatwick to SEA?
Based on fares listed within the last 7 days on Expedia for flights departing within the next year, round-trip journeys between Gatwick Airport (LGW) and Seattle - Tacoma Intl. Airport (SEA) start from S$899. Book now to secure the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Gatwick Airport (LGW) to Seattle - Tacoma Intl. Airport (SEA)?
Most flights can be cancelled online, but every air carrier has its own terms and conditions. If you do decide to cancel your flight, go to our Customer Service Portal and follow the instructions.
How do I find cheap flights from LGW to SEA that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for London Gatwick to SEA flights, you'll see a "no change fees" filter for you to select.
How far is the flight from London Gatwick to Sea-Tac Airport?
The distance is around 7,800 kilometres. Sleep mask? Check. Spare socks? Check. You'd be wise to pack all the travel comforts for this long-haul Gatwick to SeaTac flight.
Which airlines fly direct from LGW to Seattle - Tacoma Intl. Airport (SEA)?
At present, no airlines offer flights directly from LGW to Sea-Tac Airport. You'll have to book a flight with at least one stop. To get the best price and connections, lock in your fare well ahead of time.
Are LGW to SEA flight tickets cheaper when they're purchased at the last minute?
Booking your trip from Gatwick Airport (LGW) to Sea-Tac Airport last minute could be your ticket to a fantastic deal. However, it might cost you a whole lot more! If you'd rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. If your preferred air carrier hasn't released tickets yet, check back often as deals are updated all the time on Expedia.

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London Airports

London

Heathrow to Seattle
S$841.60
*Available to Expedia members.