$414 Cheap American Airlines flights Seattle (SEA) to London (LHR)

View $414 flight on Mon, Oct 6, 2025Opens in a new window

$414 Cheap American Airlines flights Seattle (SEA) to London (LHR)

Prices were available within the past 7 days and start at $414 for one-way flights and $514 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, Oct 6 - Thu, Oct 16
SEA
Seattle
LHR
London
$514 Roundtrip, found 22 hours ago
$514
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Mon, Oct 6 from Seattle to London, returning Thu, Oct 16, priced at $514 found 22 hours ago
American Airlines
Mon, Oct 6 - Thu, Oct 16
SEA
Seattle
LHR
London
$524 Roundtrip, found 22 hours ago
$524
Roundtrip
found 22 hours ago
Select American Airlines flight, departing Mon, Oct 6 from Seattle to London, returning Thu, Oct 16, priced at $524 found 22 hours 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, Icelandair, JetBlue Airways, KLM, Lufthansa, Turkish Airlines, United, Virgin Atlantic, WestJet
Popular airline
British Airways
Distance
7657 km
Average flight time
17 hours 33 mins