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

Return flights

11 Sep - 17 Sep	easyJet
04 Sep - 08 Sep	Transavia France
01 Sep - 15 Sep	Transavia France
16 Sep - 03 Oct	Transavia France
24 Sep - 28 Sep	Transavia France
04 Sep - 06 Sep	Transavia France
01 Sep - 08 Sep	Transavia France
17 Sep - 21 Sep	Transavia France
03 Sep - 10 Sep	Transavia France
15 Sep - 19 Sep	Transavia France
12 Sep - 15 Sep	Transavia France
28 Sep - 03 Oct	easyJet
28 Sep - 06 Oct	easyJet
28 Sep - 05 Oct	easyJet
29 Sep - 07 Oct	Vueling Airlines
29 Sep - 06 Oct	Vueling Airlines
29 Sep - 05 Oct	Vueling Airlines

Also check the deals for one-way flights from Paris 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 Paris to Helsinki in September from $218

Return flights