AirHint found the following cheapest return flights from Porto (OPO) to Oslo (OSL) in October 2026 (see full year).

Return flights

16 Oct - 23 Oct	Vueling Airlines
16 Oct - 23 Oct	Norwegian	direct
16 Oct - 19 Oct	Vueling Airlines
12 Oct - 23 Oct	Norwegian	direct
16 Oct - 19 Oct	Norwegian	direct
02 Oct - 11 Oct	TAP
05 Oct - 07 Oct	Transavia France
12 Oct - 14 Oct	Norwegian
02 Oct - 23 Oct	Vueling Airlines
12 Oct - 19 Oct	Norwegian	direct

Also check the deals for one-way flights from Porto to Oslo in October.

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 Porto to Oslo in October from 128€

Return flights