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

Return flights

19 Sep - 22 Sep	Ryanair
12 Sep - 13 Sep	Ryanair
25 Sep - 29 Sep	Ryanair
18 Sep - 23 Sep	Ryanair
12 Sep - 16 Sep	Ryanair
26 Sep - 29 Sep	Ryanair
12 Sep - 15 Sep	Ryanair
19 Sep - 21 Sep	Ryanair
26 Sep - 30 Sep	Ryanair
11 Sep - 16 Sep	easyJet
29 Sep - 03 Oct	Ryanair
24 Sep - 13 Oct	Vueling Airlines
26 Sep - 13 Oct	Norwegian
24 Sep - 11 Oct	Vueling Airlines
26 Sep - 13 Oct	Norwegian	direct
26 Sep - 11 Oct	Norwegian
24 Sep - 08 Oct	Vueling Airlines
24 Sep - 04 Oct	Vueling Airlines
24 Sep - 06 Oct	Vueling Airlines
26 Sep - 08 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 117€

Return flights