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

Return flights

15 Feb - 02 Mar	KLM
18 Feb - 25 Feb	Delta
15 Feb - 22 Feb	KLM
14 Feb - 21 Feb	KLM
16 Feb - 23 Feb	KLM
26 Feb - 20 Mar	Delta
20 Feb - 02 Mar	Lufthansa
16 Feb - 23 Feb	British Airways	direct
13 Feb - 01 Mar	Delta
13 Feb - 28 Feb	Delta
20 Feb - 02 Mar	British Airways	direct
19 Feb - 25 Feb	Delta
11 Feb - 18 Feb	British Airways	direct

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 635€

Return flights