AirHint found the following cheapest return flights from Naples (NAP) to Lisbon (LIS) in September 2026 (see full year).

Return flights

14 Sep - 16 Sep	Ryanair
14 Sep - 21 Sep	Ryanair
14 Sep - 21 Sep	Ryanair	direct
14 Sep - 28 Sep	Ryanair	direct
14 Sep - 01 Oct	Ryanair	direct
14 Sep - 05 Oct	Ryanair	direct
20 Sep - 06 Oct	Ryanair
12 Sep - 21 Sep	Ryanair
10 Sep - 14 Sep	Vueling Airlines
10 Sep - 21 Sep	Ryanair	direct
12 Sep - 20 Sep	Ryanair
10 Sep - 14 Sep	Ryanair	direct
10 Sep - 28 Sep	Ryanair	direct
20 Sep - 06 Oct	TAP	direct

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 $137

Return flights