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

Return flights

20 Sep - 22 Sep	Wizz Air Malta
11 Sep - 15 Sep	Ryanair
05 Sep - 08 Sep	Ryanair
22 Sep - 25 Sep	Wizz Air Malta
10 Sep - 15 Sep	Wizz Air Malta
10 Sep - 17 Sep	Wizz Air Malta
17 Sep - 19 Sep	Wizz Air Malta
11 Sep - 18 Sep	Ryanair
15 Sep - 20 Sep	Wizz Air Malta
12 Sep - 15 Sep	Ryanair
26 Sep - 02 Oct	Ryanair
26 Sep - 02 Oct	Finnair	direct

Also check the deals for one-way flights from Rome to Helsinki 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 Helsinki in September from $190

Return flights