Cheap flights from London, United Kingdom to Seattle, WA
Flights starting at £230. Choose between United Airlines, American Airlines, or Alaska Airlines to find the best price.
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Look out for the travel hack star icon for even cheaper fares.
Tips to know when travelling to Seattle
Cheapest one-way trip | £230 |
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Cheapest nonstop round-trip | £512 |
Cheapest round-trip | £492 |
Includes rare itinerary | Travel hack |
Nonstop flights in September | £512 – £2,343 |
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Weekly direct flights
Discover the top airlines offering direct flights from London to Seattle in the next month. You’ll find the number of daily direct flights per airline in the table.
Weekly direct flights for Mon 18.09 - Sun 24.09
Airline | Mon 18.09 | Tue 19.09 | Wed 20.09 | Thu 21.09 | Fri 22.09 | Sat 23.09 | Sun 24.09 |
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1 | 2 | 2 | --- | 3 | 2 | 3 | |
1 | 3 | 1 | --- | 3 | 1 | --- | |
--- | --- | --- | --- | --- | --- | 1 | |
--- | --- | --- | --- | --- | --- | --- | |
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Weekly direct flights for Mon 25.09 - Sun 01.10
Airline | Mon 25.09 | Tue 26.09 | Wed 27.09 | Thu 28.09 | Fri 29.09 | Sat 30.09 | Sun 01.10 |
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3 | 3 | 3 | 3 | 2 | 2 | 3 | |
2 | 2 | --- | 1 | --- | 2 | 1 | |
--- | --- | --- | --- | 1 | --- | 1 | |
--- | --- | --- | 1 | --- | 1 | --- | |
--- | --- | --- | --- | --- | --- | --- |
Weekly direct flights for Mon 02.10 - Sun 08.10
Airline | Mon 02.10 | Tue 03.10 | Wed 04.10 | Thu 05.10 | Fri 06.10 | Sat 07.10 | Sun 08.10 |
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2 | 3 | 3 | 3 | 1 | 3 | 2 | |
2 | --- | 2 | 2 | 2 | 1 | 1 | |
--- | 2 | 2 | 2 | 2 | 2 | 2 | |
--- | 1 | --- | 1 | 1 | --- | --- | |
--- | --- | --- | --- | --- | --- | --- |
Weekly direct flights for Mon 09.10 - Sun 15.10
Airline | Mon 09.10 | Tue 10.10 | Wed 11.10 | Thu 12.10 | Fri 13.10 | Sat 14.10 | Sun 15.10 |
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3 | 3 | 3 | 3 | 3 | 3 | 2 | |
2 | 2 | 1 | 1 | 2 | 1 | 1 | |
2 | 2 | 2 | 2 | 2 | 2 | 2 | |
--- | --- | --- | --- | --- | --- | --- | |
--- | --- | --- | --- | --- | --- | --- |
Check-in for a flight from London to Seattle
Name | Carrier code | IATA Code | Passport needed during booking | Online check-in available |
---|---|---|---|---|
United Airlines | UAL | UA | Yes | No |
American Airlines | AAL | AA | No | No |
Alaska Airlines | ASA | AS | No | Opens 24 days before flight Closes 1 hours before flight |
Iberia Airlines | IBE | IB | Yes | Opens 24 days before flight Closes 3 hours before flight |
easyJet | EZY | U2 | No | Opens 720 days before flight Closes 2 hours before flight |
Seattle travel tips
1) Check out helpful electric cars at the airport in Seattle | There are special electric cars at the Seattle-Tacoma International Airport that can assist you in any situation, drive you to your train, or help if you are lost. Such a gimmick aims to help passengers in different situations. In case you are lost at the airport in Seattle, the helpful e-car will save you. Cool, isn’t it? |
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2) Is the Olympic Sculpture Park cool or weird? You are to check | The Olympic Sculpture Park is considered to be a real artwork in Seattle. The admission is free, and it’s open for visitors all year round — locals and guests of the city like to spend time here. You can wander among installations and take nice instagrammable photos. The most prominent sculptures are the Eye Benches and Seattle Cloud Cover, a glass bridge. Come to check out the place! |
3) Have a go with craft beer in Seattle | One more thing what Seattle is good at is beer. The city entered a craft beer game a long time ago, and now it’s on the latest wave. We recommend sampling some beer in Holy Mountain Brewery, though in other breweries, beer also rocks! Just taste it! |
United States COVID-19 travel restrictions

Most travelers from London, LGW can enter Seattle, SEA, but there are restrictions.
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Information is provided as guidance only and accurate at the time of publishing. Always check government websites and airline materials before booking and traveling.
Learn more about COVID-19 restrictions in United States in our dedicated Stories article.
Frequently asked questions
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