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

Return flights

29 Sep - 01 Oct	Ryanair
30 Sep - 07 Oct	easyJet
29 Sep - 03 Oct	Ryanair
29 Sep - 05 Oct	Ryanair
29 Sep - 07 Oct	Ryanair
27 Sep - 01 Oct	easyJet
29 Sep - 06 Oct	Ryanair	direct
29 Sep - 03 Oct	Ryanair	direct
27 Sep - 05 Oct	easyJet
23 Sep - 30 Sep	Ryanair
27 Sep - 03 Oct	easyJet
23 Sep - 25 Sep	Volotea
24 Sep - 30 Sep	Ryanair
24 Sep - 25 Sep	easyJet
20 Sep - 25 Sep	easyJet
27 Sep - 29 Sep	easyJet
18 Sep - 25 Sep	Volotea
24 Sep - 29 Sep	Ryanair
17 Sep - 24 Sep	easyJet
20 Sep - 23 Sep	easyJet

Also check the deals for one-way flights from Naples to Lisbon 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 Lisbon in September from $201

Return flights