Flight deals from London to Seattle

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • Round-trip
  • One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Find the best time to fly from London to Seattle

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  • 20 27
  • May

    27 4
  • 4 11
  • 11 18
  • 18 25
  • Jun

    25 1
  • 1 8
  • 8 15
  • 15 22
  • 22 29
  • Jul

    29 6
  • 6 13
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Airlines Flying from London to Seattle

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

FAQ

How to find a cheap flight from London to Seattle

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from London to Seattle. Book your flights at the right time and save more.
1
Be flexible with your travel dates to get the cheapest flight from London to Seattle.
Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from London to Seattle over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Wed, May 7, with one-way flights priced at just £1153.
2
Compare cheap flight deals from London to Seattle across hundreds of airlines.
With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from London to Seattle. The cheapest airline for this route is Iberia.
3
Set up a Price Alert
By setting up a Price Alert for your journey from London to Seattle, you can easily keep an eye on ticket prices without having to check every day.
4
Don't miss out on cheap flight deals and promo codes from London to Seattle.
You can always find the latest offers through Trip.com Deals and Promo Codes for cheap flights. By signing up for a free membership, you'll get access to even more deals for your flights.
5
Book early or wait until the last minute.
It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.
6
Search for flights on the go.
For the best travel flight booking experience, download the Trip.com app. You can search for cheap flights from London to Seattle and snag some exclusive deals just for you.

Flight Information from London to Seattle

Cheapest one-way flight price £300
Cheapest return ticket price £465
Off-season travel month May
Peak season for travel January
Flight distance 7,711.56km
Average flight time 10 hours 6 minutes
Popular airline Finnair

Flight from London to Seattle

Whenever we start picking out places for trips, we either go for mountains, forests, or water bodies. But what if we could see all three in one place? It sounds impossible, we know, but there are, in fact several spots in the world where this is possible. Seattle is one of those places. Often called the tourist heaven, Seattle is surrounded by water, mountains, and forests. Although the main city is completely a metropolitan area, there are several touristy things one can do in and around Seattle. So, let’s talk more about that.

Tip: Whether for business or pleasure, Seattle is perfect for a weekend getaway or even a longer trip!

How to get to Seattle

Once you’re in Seattle, you might not want to leave the place. No, we are not kidding, that is exactly how vibrant and beautiful the city is! Getting to Seattle is extremely hassle-free as many airlines have routes till there. If you are looking for flights from London to Seattle, British Airways provides some good deals on cheap and direct flights to Seattle. While there are many other airlines, Virgin Atlantic Airlines are most preferred for connecting cheap flights from London. Seattle–Tacoma International Airport is the primary commercial airport for the city, and it is the eighth-busiest airport in the USA! London to Seattle flights are typically ten hours if you decide to opt for the direct ones.

Tip: If you have a layover at Seattle, you could book a hotel and simply cover almost every tourist spot in 24 hours!

What to do in Seattle

Seattle is no longer a quaint city; it is an extremely bustling, active, and beautiful place to live in as well as to travel to. Apart from the undeniable natural beauty, the place is a storehouse of art, culture, music and more! If you are planning to see a lot in the city, you might as well take a city pass and save on entries and rides. There are also several parks in the city where you could take a stroll and enjoy the beauty of it all. For instance, Kerry Park gives an incredible view of the city’s skyline. Whereas Gasworks Park is best for small picnics and kite flying!

When in Seattle, you have to try Starbucks. You must be thinking what is so special in that, right? But, Seattle is actually home to the original Starbucks! You can take a tour of the factory, too. So what are you coffee lovers waiting for then?

We need not tell you that Seattle is bustling with local cuisine served in small street sides as well as fancy restaurants. Try Fremont or Capitol Hill for some great dishes. For shopaholics, a visit to the Pike Place Market is a must. Even Downtown Seattle has some great shopping places that you could try.

Tip: If you love quirky art installations, the Fremont Troll in one thing you must see when you’re in Seattle.

Planning a vacation? Your next trip should definitely be to Seattle! To make it happen, go to Trip.com and make your London to Seattle flight bookings in an instant and at great discounts!