Cheapest return flights from Athens to Porto in September from $173

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

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

Return flights

15 Sep - 20 Sep easyJet
25 Sep - 29 Sep Air Serbia
17 Sep - 23 Sep easyJet
16 Sep - 23 Sep easyJet
10 Sep - 14 Sep easyJet
15 Sep - 22 Sep easyJet
18 Sep - 23 Sep easyJet
25 Sep - 01 Oct Air Serbia
03 Sep - 09 Sep easyJet
16 Sep - 21 Sep easyJet
15 Sep - 19 Sep easyJet
30 Sep - 16 Oct Volotea
09 Sep - 09 Oct easyJet
30 Sep - 21 Oct Volotea
30 Sep - 14 Oct Volotea
27 Sep - 01 Oct Ryanair
30 Sep - 07 Oct Volotea
10 Sep - 10 Oct Transavia France
30 Sep - 16 Oct Volotea direct
30 Sep - 02 Oct Volotea direct

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

Skyscanner

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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