$543 Cheap Alaska Airlines flights Portland (PDX) to London (LHR)

View $543 flight on Mon, Aug 3, 2026Opens in a new window

$543 Cheap Alaska Airlines flights Portland (PDX) to London (LHR)

Prices were available within the past 7 days and start at $543 for one-way flights and $923 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sun, Oct 4 - Thu, Oct 8
PDX
Portland
LHR
London
$923 Roundtrip, found 1 day ago
$923
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sun, Oct 4 from Portland to London, returning Thu, Oct 8, priced at $923 found 1 day ago

Find the cheapest month to fly from Portland (PDX) to London (LHR)

April is typically the cheapest month to fly

From $604 - $1,554 per traveler.

Travel information

Origin airport
Portland Intl.
Destination airport
Heathrow
Airlines serving
Aer Lingus, Air Canada, Air France, Alaska Airlines, American Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, United, Virgin Atlantic
Popular airline
British Airways
Distance
7839 km
Average flight time
9 hours 30 mins

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