The prices shown on this page were available within the last 20 days for the specified periods and should not be considered the final price offered. Please note that availability and prices are subject to change.

Cheapest time to fly from London to Seattle

If you’re planning to fly this route soon, keep in mind that the lowest fares are usually available at the beginning of December. Take advantage of this period to save on your flight tickets and make the most of your trip. Please note that prices may change after your search.

Filter by

week: 7 Dec - 13 Dec

Flights from just £625

£671

£650

£681

£795

£922

£1,133

£861

£630

£746

£781

£1,395

£625

SeptemberOctoberNovemberDecember

Flight Duration18 h and 40 mFlights between London and Seattle take, on average, 18 h and 40 m minutes, but the time can vary according to other factors

Cheapest flight£301Cheapest price for a flight between London and Seattle found by our customers in the last 72 hours

Origin airportsGatwick Airport, Heathrow Airport, London Stansted Airport, London Luton Airport, London City AirportFor flights from London to Seattle

Destination airportSeattle-Tacoma International AirportFor the route from London to Seattle

High seasonMarchAccording to search data from our customers, March is the busiest time to fly from London to Seattle

Airlines flying this routeBritish Airways, Virgin Atlantic, American AirlinesAirline(s) with flights between London to Seattle

One-way average Price£1134The average price for a flight London - Seattle at Opodo is £1134, based on the price of last 6 months

Best time to bookDecemberAccording to real data November is the most popular time to book a flight to Seattle when departing from London

Airlines that fly from London to Seattle

Exchange rate

1 GBP = 1.32 USD

1 USD = 0.75 GBP

Last checked on Fri 25/09

Distance: 4784 miles

London airports

Gatwick (LGW)How far from city centre: 25 miles

Heathrow (LHR)How far from city centre: 14 miles

Luton International (LTN)How far from city centre: 27 miles

Stansted (STN)How far from city centre: 30 miles

London City (LCY)How far from city centre: 7 miles

Southend (SEN)How far from city centre: 35 miles

Seattle airports

Seattle All Airports (SEA)How far from city centre: 11 miles

Useful information for flights from London to Seattle

Travelling from London to Seattle is easy, with a range of flights to Seattle from London available. You can find both cheap flights from London to Seattle and direct flights from London to Seattle, making it simple to find the perfect itinerary for you. To find the cheapest flights to Seattle from London, try booking your tickets to Seattle from London in advance.

Best time to fly to Seattle

Seattle, nestled in the heart of the Pacific Northwest, boasts a wonderfully temperate climate, making it an appealing destination year-round. Imagine yourself exploring vibrant Pike Place Market or taking in the iconic Space Needle against a backdrop of clear blue skies. The best time to experience Seattle's charm is during the summer months, from June to August, when temperatures hover around a pleasant 26°C. If you prefer milder weather and don't mind a little drizzle, spring and autumn offer a unique perspective on this captivating city. Even winter has its allure, with cosy cafes and the chance to experience Seattle's festive spirit.

Ready to discover the Emerald City? Find cheap flights to Seattle from London and other amazing deals on holidays in Seattle.

Airports in London

London has several airports that serve millions of travellers every year. If you're looking for flights to Seattle from London, you'll likely be departing from one of these three major airports:

Airport information

Heathrow Airport (LHR)

Heathrow is the busiest airport in the UK and a major international hub. It is located 14 miles west of Central London. Heathrow has four terminals and offers a wide range of amenities, including shops, restaurants, and lounges.

Gatwick Airport (LGW)

Gatwick is the second busiest airport in the UK, located 29 miles south of Central London. It has two terminals and offers a variety of shops, restaurants, and lounges.

London City Airport (LCY)

London City Airport is a smaller airport located 6 miles east of Central London. It primarily serves domestic and European destinations but also offers some long-haul flights.

Airports in Seattle

Planning your dream trip to Seattle? Let's find the perfect flights from London for you! Seattle, a vibrant city in the Pacific Northwest, is primarily served by Seattle-Tacoma International Airport (SEA), a bustling hub known for its efficiency and passenger-friendly facilities.

Airport information

Seattle-Tacoma International Airport (SEA)

Located about 14 miles south of downtown Seattle, Seattle-Tacoma International Airport is your gateway to exploring the Emerald City. This airport offers a seamless travel experience for all passengers.

At Seattle-Tacoma International Airport, you'll find a wide array of facilities designed to make your journey as comfortable as possible. Indulge in delicious meals at the various restaurants, browse for souvenirs at the shops, or exchange currency at your convenience.

Getting from the airport to the city centre is a breeze, with several convenient options available:

Link Light Rail: The Link light rail connects the airport directly to downtown Seattle, with a journey time of approximately 40 minutes.
Taxi: Taxis are readily available outside the terminal, offering a comfortable ride to the city centre.
Car Hire: For those who prefer to explore at their own pace, car hire services are available at the airport. Book your car hire in Seattle with us and enjoy a hassle-free experience.

What to do and see in Seattle

Seattle is a vibrant city with plenty to offer visitors. If you're flying in from London, be sure to book your flights to Seattle with Opodo. Once you've arrived and settled in, check out our recommendations for things to do in Seattle.

Here are 3 must-do activities in Seattle:

Space Needle: Visit this iconic tower for breathtaking views of the city.
Pike Place Market: Explore this historic market and sample fresh seafood, local produce, and unique crafts.
Museum of Pop Culture (MoPOP): Immerse yourself in music, science fiction, and pop culture at this interactive museum.

Discover our best flight deals from London to Seattle

Yes, you read that right! With Opodo Prime you can find exclusive deals on your flights to Seattle from London. Discover this benefit and many more by becoming an Opodo Prime or Prime Plus member now!

Frequently asked questions about flights from London to Seattle

On average, how much is the price of a flight from London to Seattle?

When you fly from London to Seattle the average price is £1134. However, this price depends on many other factors such as seasonality or how far in advance the route has been booked.

How can I find cheap flights from London to Seattle at Opodo?

The cheapest price for a flight from London to Seattle is 301 £. At Opodo we use different machine learned based methodologies to find our costumers the best option available, considering airline combinations, stopovers and direct flights as well as different criteria for inbound and outbound journeys.

When is the best time to book a flight from London to Seattle?

The most popular months to book a flight from London to Seattle are November, September and December, based on the searches of our customers.

When is the best time to travel from London to Seattle?

The best time of the year to go to Seattle when flying from London depends on several preference factors like climate, seasonality and, of course, price. When it comes to popularity, December is the top 1º month to fly to Seattle from London in terms of searches from our customer, followed by July and June. If you prefer to avoid high peaks of turism, however, and escape a crowded period, February, April and November are the months with less volume of searchs for the route London - Seattle.

How long does the flight take to go from London to Seattle?

The total flight time between London and Seattle is of around 18 h and 40 m on average, considering an average distance of 4,784.25 mi, for both direct and indirect flights for the route (which may have 1 or more stops in other cities in between).

Which airports have flights between London and Seattle?

The main airport route flying between London and Seattle is: Gatwick Airport (LHR) to Seattle-Tacoma International Airport(SEA). This route is covered by the following airline(s):

Which are the airlines with flights from London to Seattle?

Airlines with direct flights departing from London to Seattle are:

American Airlines.
Klm Royal Dutch Airlines.
British Airways.

Icelandair

Condor
Klm Royal Dutch Airlines

Plan your trip

Popular Flight RoutesOther popular routes