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

Return flights

24 Sep - 01 Oct	Wizz Air Malta
25 Sep - 29 Sep	Wizz Air
26 Sep - 29 Sep	Wizz Air
25 Sep - 30 Sep	Norwegian
22 Sep - 29 Sep	Wizz Air
24 Sep - 08 Oct	Vueling Airlines
24 Sep - 30 Sep	Wizz Air Malta
24 Sep - 12 Oct	Vueling Airlines
26 Sep - 08 Oct	Norwegian
25 Sep - 08 Oct	Norwegian
19 Sep - 08 Oct	Norwegian
24 Sep - 12 Oct	Norwegian	direct
26 Sep - 12 Oct	Norwegian	direct
25 Sep - 12 Oct	Norwegian	direct
24 Sep - 11 Oct	Vueling Airlines
26 Sep - 28 Sep	Norwegian
19 Sep - 21 Sep	Air Serbia
19 Sep - 22 Sep	Norwegian
19 Sep - 23 Sep	Norwegian
25 Sep - 28 Sep	Norwegian

Also check the deals for one-way flights from Rome 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 Rome to Oslo in September from 119€

Return flights