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

One-Way flights

06 Sep	Vueling Airlines
17 Sep	Vueling Airlines
02 Sep	Norwegian	direct
04 Sep	Norwegian	direct
12 Sep	Norwegian	direct
11 Sep	Norwegian	direct
10 Sep	Norwegian	direct
09 Sep	Wizz Air
23 Sep	Wizz Air Malta
27 Sep	Ryanair

Also check the deals for return 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 one-way flights from Rome to Oslo in September from $66

One-Way flights