London Heathrow (LHR) to Seattle / Tacoma (SEA) flight deal in economy from $497
LHRLondon Heathrow Airport
London Heathrow, United Kingdom
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$694 USD
-28%$497 USD
Verified about 23 hours agoDecember 2026
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Fair Availability
37% of dates checked are available within 10% of the lowest price
Thursday, December 24th, 2026
10 round-trip options
Returning
Tue, Dec 29, 2026•5 Day Trip
$1,022 USD
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Wed, Dec 30, 2026•6 Day Trip
$1,230 USD
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Thu, Dec 31, 2026•7 Day Trip
$1,364 USD
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Fri, Jan 1, 2027•8 Day Trip
$1,242 USD
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Sat, Jan 2, 2027•9 Day Trip
$1,244 USD
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Sun, Jan 3, 2027•10 Day Trip
$1,244 USD
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Mon, Jan 4, 2027•11 Day Trip
$1,252 USD
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Tue, Jan 5, 2027•12 Day Trip
$1,251 USD
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Wed, Jan 6, 2027•13 Day Trip
$997 USD
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Thu, Jan 7, 2027•14 Day Trip
$965 USD