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

Return flights

24 Sep - 27 Sep	Ryanair
19 Sep - 22 Sep	Volotea
05 Sep - 09 Sep	easyJet
19 Sep - 21 Sep	SWISS
12 Sep - 17 Sep	SWISS
01 Sep - 08 Sep	SWISS
18 Sep - 21 Sep	Lufthansa
26 Sep - 01 Oct	Ryanair
12 Sep - 19 Sep	SWISS
09 Sep - 13 Sep	SWISS
05 Sep - 24 Sep	Norwegian
29 Sep - 03 Oct	Ryanair
26 Sep - 13 Oct	Norwegian
24 Sep - 13 Oct	Vueling Airlines
19 Sep - 06 Oct	Norwegian
27 Sep - 13 Oct	Vueling Airlines
19 Sep - 06 Oct	Norwegian	direct
29 Sep - 13 Oct	Norwegian
26 Sep - 13 Oct	Norwegian	direct
26 Sep - 06 Oct	Norwegian

Also check the deals for one-way flights from Naples to Oslo 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 Oslo in September from $164

Return flights