London Heathrow (LHR) to Seattle / Tacoma (SEA) flight deal in economy from $713
LHRLondon Heathrow Airport
London Heathrow, United Kingdom
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
$824 USD
-13%$713 USD
Verified 16 days agoDecember 2026
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Great Availability
60% of dates checked are available within 10% of the lowest price
Monday, December 7th, 2026
7 round-trip options
Returning
Sat, Dec 12, 2026•5 Day Trip
$842 USD
Returning
Sun, Dec 13, 2026•6 Day Trip
$782 USD
Returning
Mon, Dec 14, 2026•7 Day Trip
$782 USD
Returning
Wed, Dec 16, 2026•9 Day Trip
$1,245 USD
Returning
Sat, Dec 19, 2026•12 Day Trip
$1,485 USD
Returning
Sun, Dec 20, 2026•13 Day Trip
$1,441 USD
Returning
Mon, Dec 21, 2026•14 Day Trip
$1,441 USD