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

Return flights

13 Aug - 20 Aug	Lufthansa
13 Aug - 17 Aug	Lufthansa
10 Aug - 17 Aug	Lufthansa
11 Aug - 18 Aug	Lufthansa
18 Aug - 25 Aug	Lufthansa
15 Aug - 26 Aug	Lufthansa
15 Aug - 17 Aug	Lufthansa
08 Aug - 15 Aug	Lufthansa
20 Aug - 21 Aug	Lufthansa
20 Aug - 26 Aug	Lufthansa
29 Aug - 02 Sep	airBaltic
30 Aug - 02 Sep	airBaltic
28 Aug - 01 Sep	airBaltic
29 Aug - 01 Sep	airBaltic
10 Aug - 11 Sep	Lufthansa
31 Aug - 04 Sep	Finnair
29 Aug - 02 Sep	Finnair	direct
30 Aug - 02 Sep	Finnair	direct
29 Aug - 01 Sep	Finnair	direct
31 Aug - 04 Sep	Finnair	direct

Also check the deals for one-way flights from Helsinki to Zurich 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 Helsinki to Zurich in August from 166€

Return flights