Cheap Alaska Airlines flights Seattle (SEA) to London (LHR)

Cheap Alaska Airlines flights Seattle (SEA) to London (LHR)

Prices were available within the past 7 days and start at for one-way flights and $723 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, Jul 27 - Wed, Aug 12
SEA
Seattle
LHR
London
$723 Roundtrip, found 5 days ago
$723
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Mon, Jul 27 from Seattle to London, returning Wed, Aug 12, priced at $723 found 5 days ago

Find the cheapest month to fly from Seattle (SEA) to London (LHR)

October is typically the cheapest month to fly

From $477 - $843 per traveler.
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
Iberia
Distance
7657 km
Average flight time
17 hours 34 mins