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

Return flights

04 Jul - 09 Jul	Ryanair
02 Jul - 08 Jul	Ryanair
04 Jul - 08 Jul	Ryanair
09 Jul - 11 Jul	Ryanair
28 Jul - 03 Aug	Ryanair
22 Jul - 30 Jul	Ryanair
14 Jul - 17 Jul	Ryanair
14 Jul - 21 Jul	Ryanair
01 Jul - 08 Jul	Vueling Airlines
01 Jul - 10 Jul	Vueling Airlines
02 Jul - 07 Jul	Ryanair
28 Jul - 04 Aug	Ryanair
25 Jul - 03 Aug	Ryanair
25 Jul - 02 Aug	Ryanair
27 Jul - 03 Aug	Wizz Air Malta
29 Jul - 02 Aug	Vueling Airlines
25 Jul - 04 Aug	Ryanair
20 Jul - 03 Aug	Air Serbia
15 Jul - 12 Aug	Ryanair
30 Jul - 06 Aug	Ryanair

Also check the deals for one-way flights from Porto to Athens in July.

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 July from $241

Return flights