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

Sunday, December 20th, 2026

7 round-trip options

Returning
Fri, Dec 25, 2026•5 Day Trip
$914 USD
Google Flights
Returning
Sat, Dec 26, 2026•6 Day Trip
$832 USD
Google Flights
Returning
Sun, Dec 27, 2026•7 Day Trip
$792 USD
Google Flights
Returning
Tue, Dec 29, 2026•9 Day Trip
$792 USD
Google Flights
Returning
Fri, Jan 1, 2027•12 Day Trip
$748 USD
Google Flights
Returning
Sat, Jan 2, 2027•13 Day Trip
$1,029 USD
Google Flights
Returning
Sun, Jan 3, 2027•14 Day Trip
$745 USD
Google Flights