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

Return flights

30 Jul - 05 Aug	KLM
29 Jul - 03 Aug	easyJet
30 Jul - 07 Aug	Ryanair
28 Jul - 03 Aug	easyJet
29 Jul - 07 Aug	easyJet
25 Jul - 29 Jul	KLM
26 Jul - 03 Aug	Air Europa
29 Jul - 31 Jul	Vueling Airlines
24 Jul - 29 Jul	Air Serbia
27 Jul - 03 Aug	Ryanair
29 Jul - 05 Aug	Air France
26 Jul - 29 Jul	Air Europa
26 Jul - 31 Jul	Vueling Airlines
24 Jul - 31 Jul	Air Serbia
27 Jul - 29 Jul	easyJet
28 Jul - 31 Jul	easyJet
24 Jul - 14 Aug	Air Serbia
28 Jul - 05 Aug	Air Europa
21 Jul - 29 Jul	KLM
24 Jul - 28 Jul	Air Serbia

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 263€

Return flights