American Airlines Cheap Flights from Seattle to London: AA SEA→LON

View HK$4,008 flight on Tue, 7 Oct 2025Opens in a new window
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Prices were available within the past 7 days and start at HK$4,008 for one-way flights and HK$6,661 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, 20 Oct - Mon, 3 Nov
SEA
Seattle
LHR
London
HK$6,661 Return, found 14 hours ago
HK$6,661
Return
found 14 hours ago
Select American Airlines flight, departing Mon, 20 Oct from Seattle to London, returning Mon, 3 Nov, priced at HK$6,661 found 14 hours ago
Seattle to London route information
Origin airport
Seattle - Tacoma Intl.
Destination airport
Heathrow
Distance
7657 km
*Available to Expedia members.