Cheapest return flights from Portland to Lisbon in October from $466

AirHint found the following cheapest return flights from Portland (PDX) to Lisbon (LIS) in October 2025 (see full year).

Return flights

07 Oct - 14 Oct Air Canada
22 Oct - 29 Oct Air Canada
23 Oct - 29 Oct Air Canada
15 Oct - 27 Oct Air Canada
01 Oct - 08 Oct Icelandair
01 Oct - 05 Oct Air Canada
08 Oct - 13 Oct Air Canada
03 Oct - 17 Oct Air Canada
09 Oct - 18 Oct United

Also check the deals for one-way flights from Portland to Lisbon in October.

Skyscanner

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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