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

Return flights

11 Sep - 14 Sep	Lufthansa
09 Sep - 13 Sep	Lufthansa
01 Sep - 09 Sep	Lufthansa
07 Sep - 25 Sep	Lufthansa
08 Sep - 15 Sep	Lufthansa
01 Sep - 04 Sep	Lufthansa
08 Sep - 16 Sep	Lufthansa
04 Sep - 11 Sep	Lufthansa
12 Sep - 15 Sep	Lufthansa
15 Sep - 17 Sep	Lufthansa
29 Sep - 10 Oct	airBaltic
27 Sep - 04 Oct	Ryanair
29 Sep - 10 Oct	Finnair	direct
27 Sep - 04 Oct	Finnair	direct

Also check the deals for one-way flights from Helsinki to Zurich 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 Helsinki to Zurich in September from $205

Return flights