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

Return flights

26 Oct - 30 Oct	Ryanair
07 Oct - 16 Oct	Ryanair
08 Oct - 16 Oct	Ryanair
07 Oct - 15 Oct	Ryanair
06 Oct - 09 Oct	Ryanair
01 Oct - 06 Oct	Ryanair
31 Oct - 09 Nov	Ryanair
23 Oct - 27 Oct	Ryanair
15 Oct - 19 Oct	Ryanair
06 Oct - 08 Oct	Ryanair
01 Oct - 08 Oct	Ryanair
26 Oct - 01 Nov	Ryanair
30 Oct - 03 Nov	Ryanair
25 Oct - 01 Nov	Ryanair

Also check the deals for one-way flights from Zagreb 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.

Book a cheap hotel in Porto

Cheap car rent in Porto

Cheapest return flights from Zagreb to Porto in October from $155

Return flights