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

Return flights

25 Sep - 29 Sep	Wizz Air
26 Sep - 29 Sep	Wizz Air
25 Sep - 08 Oct	Norwegian
25 Sep - 12 Oct	Norwegian	direct
25 Sep - 15 Oct	Norwegian
25 Sep - 28 Sep	Ryanair
25 Sep - 11 Oct	Norwegian
22 Sep - 29 Sep	Wizz Air
18 Sep - 21 Sep	Ryanair
24 Sep - 08 Oct	Vueling Airlines
24 Sep - 30 Sep	Wizz Air Malta
24 Sep - 12 Oct	Vueling Airlines
19 Sep - 08 Oct	Norwegian
18 Sep - 08 Oct	Norwegian
26 Sep - 08 Oct	Norwegian
26 Sep - 12 Oct	Norwegian	direct
22 Sep - 24 Sep	Wizz Air
26 Sep - 30 Sep	Ryanair
26 Sep - 28 Sep	Norwegian
27 Sep - 30 Sep	Ryanair

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.

Book a cheap hotel in Oslo

Cheap car rent in Oslo

Cheapest return flights from Rome to Oslo in September from $155

Return flights