Question 1

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

Accepted Answer

Flying on SWISS is currently your cheapest option to Seattle, with prices starting at £476. Additional return tickets that might be worth considering are offered by JetBlue and Icelandair, with the lowest prices starting at £478 and £478, respectively. SWISS is priced at 10% lower than the current average price of a flight leaving 3 months from now.

Question 2

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

Accepted Answer

The price you pay for your flight from London Gatwick Airport to Seattle may vary depending on when you book. For the best chance of a lower fare, look to book 44 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 3

What is the cheapest month to book a flight from London Gatwick Airport to Seattle?

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from London Gatwick Airport to Seattle (average of £622). Flying from London Gatwick Airport to Seattle in July is currently the most expensive (average of £946). 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.

Question 4

What is the cheapest day to fly from London Gatwick Airport to Seattle?

Accepted Answer

Travellers seeking maximum savings on their London Gatwick Airport to Seattle flight should consider departing on Wednesday at midday when fares are most often at their lowest. Saturday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Question 5

E

Accepted Answer

In terms of precipitation, rainfall in Seattle ranges from 18.0 - 168.0 inches per month. November is typically the wettest month, when rainfall can reach 168.0 mm. July is typically the driest time to visit Seattle when rainfall is around 18.0 mm.

Question 6

E

Accepted Answer

If weather is an important factor for your trip to Seattle, 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 19.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 5.0 C).

Question 7

What is the cheapest day to fly round-trip from London Gatwick Airport to Seattle?

Accepted Answer

Flying to your destination on a Sunday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Seattle. Check prices with Cheapflights to find a great deal for your trip.

Question 8

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

Accepted Answer

Users have found that booking a flight from London Gatwick Airport to Seattle at least 44 days early can save you up to 39% on average compared to booking a flight this week. If booking 44 days before your flight isn’t an option for you, users have found flights from London Gatwick Airport to Seattle for as little as £545 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £790 for flights departing within the next 3 days.

Question 9

What is the cheapest month to fly from London Gatwick Airport to Seattle?

Accepted Answer

January is one of the best times of the year to fly to Seattle from London Gatwick Airport. Prices for January average £554 per person but you can even find prices for as low as £322. The most expensive prices can be found in the month of August. Opting for a January flight can save you 30% on your journey compared to booking in August

Question 10

What is the cheapest time of day to fly from LGW to SEA?

Accepted Answer

Unlike in the afternoon, when flights are generally more expensive, you can save up to 8% on flights from London Gatwick Airport to Seattle by exploring options for tickets at midday.

Question 11

What airport do you fly into for flights to Seattle from London Gatwick?

Accepted Answer

Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from London Gatwick to Seattle. 2 airlines have flights to Seattle/Tacoma Intl from London Gatwick on a regular basis. Booking flights from London Gatwick to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from London Gatwick per day.

Question 12

Can I find deals for flights from Gatwick to Seattle that include hotel bookings?

Accepted Answer

Yes. In addition to deals on Gatwick to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.

Question 13

How can I find direct flights from Gatwick to Seattle?

Accepted Answer

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to Seattle.

Question 14

Can I find deals for business class flights from Gatwick to Seattle?

Accepted Answer

Yes. Cheapflights offers flight deals from Gatwick to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Question 15

How does Cheapflights help users find flights from Gatwick to Seattle?

Accepted Answer

When you search for this flight from Gatwick to Seattle, 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.

Question 16

Why should you use Cheapflights to find cheap flight tickets from Gatwick to Seattle?

Accepted Answer

Cheapflights simply makes it quick and affordable to book flights from Gatwick to Seattle 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.

Question 17

Can Cheapflights find flights from Gatwick to Seattle with no change fees?

Accepted Answer

Cheapflights does show flights with no change fees to all users. To see these options for flights from Gatwick to Seattle, users can toggle the no change fees filter when performing a flight search.

Question 18

Can Cheapflights notify me if prices for flights from Gatwick to Seattle become cheaper?

Accepted Answer

Of course! You can now track prices for flights from Gatwick to Seattle and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

Round-trip from	£476
One-way from	£400
Popular in	August
Cheapest in	March
Average price	£666

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£321	Average£511	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Virgin Atlantic	Cheapest£448	Average£526	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Cheap flights from London Gatwick Airport to Seattle from £400

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 24/8. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheapest flights from Gatwick to SeattleExplore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

Explore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.

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Use the filters below to find and compare flights from London Gatwick Airport to Seattle that are best for you.

Best time to book a flight from Gatwick to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Gatwick with our price prediction graph.

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

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

Use this chart to determine the optimal time to book a return flight from Gatwick to Seattle. Price data was last updated on 27 June 2025.

What is the cheapest month to book a flight from London Gatwick Airport to Seattle?

What is the cheapest time of day to fly from LGW to SEA?

Find hourly flight availability from Gatwick to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 July 2025.

How much does it cost for a return flight from London Gatwick Airport to Seattle?

Reviews of airlines servicing Seattle

Get a feel of what it's like to fly with SWISS, JetBlue, andAmerican Airlines from London Gatwick Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Gatwick to Seattle. 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 into for flights to Seattle from London Gatwick?

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

Can I find deals for flights from Gatwick to Seattle that include hotel bookings?

How can I find direct flights from Gatwick to Seattle?

Can I find deals for business class flights from Gatwick to Seattle?

What is the cheapest month to book a flight from London Gatwick Airport to Seattle?

Travelling to a place near London Gatwick Airport?

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Alternative routes for Gatwick to Seattle

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Top 2 airlines flying from Gatwick to Seattle

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How does Cheapflights help users find flights from Gatwick to Seattle?

Why should you use Cheapflights to find cheap flight tickets from Gatwick to Seattle?

Can Cheapflights find flights from Gatwick to Seattle with no change fees?

Can Cheapflights notify me if prices for flights from Gatwick to Seattle become cheaper?

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Cheapest flights from Gatwick to Seattle
Explore the most affordable flight options available from Gatwick to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 July 2025.