London Heathrow (LHR) to Seattle / Tacoma (SEA) flight deal in economy from $713

Air FranceAFAir FranceDelta Air LinesDLDelta Air LinesKLMKLKLM
Round Trip•Economy
United KingdomLHR

London Heathrow Airport

London Heathrow, United Kingdom
United StatesSEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States
$824 USD
-13%$713 USD
Verified 16 days ago
Great Availability
60% of dates checked are available within 10% of the lowest price

Thursday, December 10th, 2026

7 round-trip options

Returning
Tue, Dec 15, 2026•5 Day Trip
$781 USD
Google Flights
Returning
Wed, Dec 16, 2026•6 Day Trip
$1,245 USD
Google Flights
Returning
Thu, Dec 17, 2026•7 Day Trip
$892 USD
Google Flights
Returning
Sat, Dec 19, 2026•9 Day Trip
$1,486 USD
Google Flights
Returning
Tue, Dec 22, 2026•12 Day Trip
$1,280 USD
Google Flights
Returning
Wed, Dec 23, 2026•13 Day Trip
$782 USD
Google Flights
Returning
Thu, Dec 24, 2026•14 Day Trip
$791 USD
Google Flights