$473 Cheap American Airlines flights Seattle (SEA) to London (LHR)

View $473 flight on Fri, Aug 22, 2025Opens in a new window

$473 Cheap American Airlines flights Seattle (SEA) to London (LHR)

Prices were available within the past 7 days and start at $473 for one-way flights and $664 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Feb 10 - Tue, Feb 24
SEA
Seattle
LHR
London
$664 Roundtrip, found 1 day ago
$664
Roundtrip
found 1 day ago
Select American Airlines flight, departing Tue, Feb 10 from Seattle to London, returning Tue, Feb 24, priced at $664 found 1 day ago
Flights from Seattle (SEA) to London (LHR)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, JetBlue Airways, KLM, Lufthansa, Turkish Airlines, United, Virgin Atlantic
Popular airline
Delta
Distance
7657 km