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Find cheap one-way flights from Seattle to London starting at US$258.
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
- One way
- Round-trip
- SEA07:0019h 30m1 stopYXU05:30Thu, Jun 13|Seattle - London|WestJetUS$258US$45443% OFF43% OFFUS$454US$258
- SEA08:008h 13m1 stopYXU19:13Sun, May 5|Seattle - London|Alaska AirlinesUS$267US$45441% OFF41% OFFUS$454US$267
- SEA21:1829h 12m1 stopYXU05:30Thu, Jun 13|Seattle - London|Alaska AirlinesUS$278US$45439% OFF39% OFFUS$454US$278
- SEA13:5026h 23m1 stopYXU19:13Thu, May 9|Seattle - London|WestJetUS$287US$287
- SEA13:5026h 23m1 stopYXU19:13Sun, May 5|Seattle - London|WestJetUS$333US$333
- SEA07:009h 13m1 stopYXU19:13Thu, Jun 13|Seattle - London|Delta Air LinesUS$374US$374
- SEA08:008h 13m1 stopYXU19:13Thu, May 9|Seattle - London|Alaska AirlinesUS$390US$390
- SEA13:003h 5mDirectYXU14:00Fri, Apr 5|Seattle - London|WestJetFind More FlightsFind More Flights
Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Seattle to London
Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
WestJet
From US$258
Alaska Airlines
From US$267
Frontier Airlines
From US$342
Delta Air Lines
From US$374
United Airlines
From US$452
Air Canada
From US$691
ANA airlines
Find more flights and airlines
Find cheap flights from Seattle to London by different airports
Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Seattle to London.
- CheapestSEA07:0019h 30m1 transferYXU05:30Seattle-Tacoma International Airport - London International AirportThu, Jun 13WestJetUS$258
- SEA07:0019h 30m1 transferYXU05:30Seattle-Tacoma International Airport - London International AirportThu, Jun 13WestJetUS$258Find More Flights
Frequently Asked Questions
Seattle to London Flight Information
Cheapest nonstop flight price | $258 |
---|---|
Off-season for travel | May |
Peak season for travel | October |
Plan Your Trip Around London
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