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

Return flights

25 Sep - 04 Oct	Ryanair
18 Sep - 27 Sep	Ryanair
25 Sep - 29 Sep	Ryanair
27 Sep - 29 Sep	Ryanair
27 Sep - 04 Oct	Ryanair
27 Sep - 01 Oct	Ryanair
18 Sep - 22 Sep	Ryanair
25 Sep - 01 Oct	Ryanair
17 Sep - 24 Sep	Wizz Air Malta
18 Sep - 24 Sep	Ryanair
27 Sep - 30 Sep	Ryanair
20 Sep - 27 Sep	Ryanair
18 Sep - 28 Sep	Ryanair
17 Sep - 21 Sep	Wizz Air Malta
24 Sep - 08 Oct	Vueling Airlines
23 Sep - 04 Oct	Ryanair
26 Sep - 04 Oct	Ryanair
26 Sep - 03 Oct	Ryanair
21 Sep - 02 Oct	Ryanair
27 Sep - 10 Oct	Wizz Air Malta

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 $172

Return flights