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

Return flights

30 Sep - 14 Oct	easyJet
30 Sep - 21 Oct	Vueling Airlines
02 Sep - 11 Oct	easyJet
02 Sep - 11 Oct	easyJet	direct
29 Sep - 02 Oct	Ryanair
30 Sep - 06 Oct	Vueling Airlines
30 Sep - 03 Oct	easyJet
15 Sep - 01 Oct	easyJet
23 Sep - 27 Sep	easyJet	direct
30 Sep - 04 Oct	Ryanair
30 Sep - 15 Oct	Vueling Airlines
20 Sep - 27 Sep	Ryanair
18 Sep - 20 Sep	Ryanair
16 Sep - 30 Sep	easyJet	direct
24 Sep - 27 Sep	Ryanair
25 Sep - 30 Sep	Ryanair
20 Sep - 24 Sep	Ryanair
17 Sep - 24 Sep	Ryanair
16 Sep - 18 Sep	Ryanair
11 Sep - 16 Sep	Ryanair

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 118€

Return flights