AirHint found the following cheapest return flights from Portland (PDX) to London (STN) in February 2026 (see full year).

Return flights

23 Feb - 11 Mar	Hawaiian Airlines
20 Feb - 03 Mar	Frontier Airlines
18 Feb - 01 Mar	Alaska Airlines
18 Feb - 25 Feb	Hawaiian Airlines
18 Feb - 27 Feb	Hawaiian Airlines
08 Feb - 15 Feb	Lufthansa
06 Feb - 13 Feb	Frontier Airlines
02 Feb - 10 Feb	Frontier Airlines
09 Feb - 14 Feb	Frontier Airlines
06 Feb - 14 Feb	Frontier Airlines
05 Feb - 14 Feb	Iberia
10 Feb - 14 Feb	Hawaiian Airlines

Also check the deals for one-way flights from Portland to London in February.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Portland to London in February from $710

Return flights