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

Return flights

28 Oct - 04 Nov	Ryanair
31 Oct - 05 Nov	Ryanair
28 Oct - 01 Nov	Ryanair
21 Oct - 28 Oct	Ryanair
29 Oct - 18 Nov	Vueling Airlines
25 Oct - 10 Nov	Vueling Airlines
22 Oct - 29 Oct	Ryanair
25 Oct - 29 Oct	Vueling Airlines
29 Oct - 10 Nov	Vueling Airlines
25 Oct - 08 Nov	Vueling Airlines
25 Oct - 09 Nov	Vueling Airlines
25 Oct - 27 Oct	Vueling Airlines
31 Oct - 04 Nov	Ryanair
23 Oct - 28 Oct	Ryanair
27 Oct - 31 Oct	Ryanair
31 Oct - 18 Nov	Vueling Airlines
21 Oct - 23 Oct	Ryanair
24 Oct - 27 Oct	Wizz Air Malta
23 Oct - 30 Oct	Ryanair
24 Oct - 28 Oct	Wizz Air Malta

Also check the deals for one-way flights from Porto to Athens 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 Athens in October from $230

Return flights