$487 Cheap American Airlines flights Seattle (SEA) to London (LHR)

View $487 flight on Thu, Nov 27, 2025Opens in a new window

$487 Cheap American Airlines flights Seattle (SEA) to London (LHR)

Prices were available within the past 7 days and start at $487 for one-way flights and $1,822 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Fri, Dec 26 - Thu, Jan 1
SEA
Seattle
LHR
London
$1,822 Roundtrip, found 3 days ago
$1,822
Roundtrip
found 3 days ago
Select American Airlines flight, departing Fri, Dec 26 from Seattle to London, returning Thu, Jan 1, priced at $1,822 found 3 days ago
Flights from Seattle (SEA) to London (LHR)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Heathrow
Airlines serving
Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Icelandair, KLM, Lufthansa, Turkish Airlines, United, Virgin Atlantic
Popular airline
Virgin Atlantic
Distance
7657 km
Average flight time
17 hours 34 mins