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

Return flights

30 Sep - 04 Oct	easyJet	direct
23 Sep - 27 Sep	easyJet	direct
30 Sep - 07 Oct	easyJet
03 Sep - 16 Sep	easyJet
16 Sep - 27 Sep	easyJet
22 Sep - 07 Oct	Vueling Airlines
16 Sep - 20 Sep	easyJet
04 Sep - 16 Sep	easyJet
16 Sep - 20 Sep	easyJet	direct
24 Sep - 04 Oct	easyJet
16 Sep - 07 Oct	Vueling Airlines
27 Sep - 30 Sep	easyJet
02 Sep - 10 Sep	easyJet
30 Sep - 21 Oct	Vueling Airlines
03 Sep - 15 Sep	easyJet
22 Sep - 24 Sep	Vueling Airlines
23 Sep - 07 Oct	Vueling Airlines
29 Sep - 06 Oct	easyJet
25 Sep - 04 Oct	Vueling Airlines
22 Sep - 08 Oct	Vueling Airlines

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

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 Naples to Porto in September from 98€

Return flights