London Heathrow (LHR) to Seattle / Tacoma (SEA) flight deal in economy from $688
LHRLondon Heathrow Airport
London Heathrow, United Kingdom
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$873 USD
-21%$688 USD
Verified 2 days agoDecember 2026
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Limited Availability
19% of dates checked are available within 10% of the lowest price
Monday, December 21st, 2026
10 round-trip options
Returning
Sat, Dec 26, 2026•5 Day Trip
$867 USD
Returning
Sun, Dec 27, 2026•6 Day Trip
$800 USD
Returning
Mon, Dec 28, 2026•7 Day Trip
$800 USD
Returning
Tue, Dec 29, 2026•8 Day Trip
$800 USD
Returning
Wed, Dec 30, 2026•9 Day Trip
$801 USD
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Thu, Dec 31, 2026•10 Day Trip
$812 USD
Returning
Fri, Jan 1, 2027•11 Day Trip
$830 USD
Returning
Sat, Jan 2, 2027•12 Day Trip
$836 USD
Returning
Sun, Jan 3, 2027•13 Day Trip
$848 USD
Returning
Mon, Jan 4, 2027•14 Day Trip
$836 USD