AirHint found the following cheapest return flights from Rome (CIA) to Porto (OPO) in October 2025 (see full year).

Return flights

30 Oct - 06 Nov	Ryanair
15 Oct - 25 Oct	Ryanair	direct
15 Oct - 19 Oct	Ryanair	direct
21 Oct - 22 Oct	Ryanair
15 Oct - 20 Oct	Ryanair
21 Oct - 23 Oct	Ryanair
22 Oct - 25 Oct	Ryanair	direct
21 Oct - 25 Oct	Ryanair
15 Oct - 23 Oct	Ryanair	direct
23 Oct - 25 Oct	Ryanair
20 Oct - 22 Oct	Ryanair	direct
30 Oct - 03 Nov	Ryanair
29 Oct - 04 Nov	Ryanair
30 Oct - 01 Nov	Ryanair
30 Oct - 02 Nov	Ryanair
29 Oct - 03 Nov	Ryanair
31 Oct - 08 Nov	Ryanair
28 Oct - 03 Nov	Ryanair
31 Oct - 04 Nov	Ryanair
29 Oct - 02 Nov	Ryanair

Also check the deals for one-way flights from Rome to Porto 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 Rome to Porto in October from 138€

Return flights