Cheapest return flights from Porto to Athens in September from $128

Best time to book flights for Porto (OPO) to Athens (ATH) flights at AirHint

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

Return flights

18 Sep - 23 Sep Aegean Airlines direct
18 Sep - 25 Sep Aegean Airlines direct
18 Sep - 27 Sep Aegean Airlines direct
23 Sep - 30 Sep easyJet
16 Sep - 23 Sep Aegean Airlines direct
23 Sep - 30 Sep Aegean Airlines direct
30 Sep - 07 Oct easyJet
23 Sep - 27 Sep Aegean Airlines direct
21 Sep - 27 Sep Aegean Airlines direct
16 Sep - 07 Oct Aegean Airlines direct
17 Sep - 23 Sep TAP
11 Sep - 23 Sep Ryanair
30 Sep - 07 Oct Aegean Airlines direct
15 Sep - 06 Oct easyJet
28 Sep - 04 Oct Aegean Airlines direct
29 Sep - 02 Oct easyJet
14 Sep - 06 Oct Aegean Airlines
30 Sep - 11 Oct Vueling Airlines
30 Sep - 21 Oct Vueling Airlines
30 Sep - 14 Oct Vueling Airlines

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

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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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