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

Return flights

27 Aug - 03 Sep	KLM
29 Aug - 01 Sep	AJet
28 Aug - 01 Sep	AJet
29 Aug - 14 Sep	AJet
29 Aug - 08 Sep	AJet
25 Aug - 27 Aug	Lufthansa
30 Aug - 21 Sep	KLM
25 Aug - 01 Sep	SunExpress
25 Aug - 06 Sep	Corendon Airlines
27 Aug - 29 Aug	AJet
23 Aug - 01 Sep	Lufthansa
21 Aug - 28 Aug	Lufthansa
22 Aug - 29 Aug	Lufthansa
23 Aug - 03 Sep	Lufthansa
21 Aug - 25 Aug	Lufthansa
22 Aug - 24 Aug	Lufthansa
18 Aug - 26 Aug	SunExpress
19 Aug - 22 Aug	Lufthansa
27 Aug - 31 Aug	AJet
21 Aug - 26 Aug	Lufthansa

Also check the deals for one-way flights from Zurich to Helsinki in August.

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 Zurich to Helsinki in August from $270

Return flights