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
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Great Availability
60% of dates checked are available within 10% of the lowest price
Tuesday, December 1st, 2026
7 round-trip options
Returning
Sun, Dec 6, 2026•5 Day Trip
$731 USD
Returning
Mon, Dec 7, 2026•6 Day Trip
$739 USD
Returning
Tue, Dec 8, 2026•7 Day Trip
$739 USD
Returning
Thu, Dec 10, 2026•9 Day Trip
$798 USD
Returning
Sun, Dec 13, 2026•12 Day Trip
$788 USD
Returning
Mon, Dec 14, 2026•13 Day Trip
$789 USD
Returning
Tue, Dec 15, 2026•14 Day Trip
$789 USD