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

Return flights

21 Sep - 25 Sep	Ryanair	direct
28 Sep - 05 Oct	Ryanair
18 Sep - 25 Sep	Ryanair	direct
21 Sep - 28 Sep	Ryanair
25 Sep - 29 Sep	Ryanair
18 Sep - 23 Sep	Ryanair
18 Sep - 21 Sep	Ryanair
23 Sep - 25 Sep	Ryanair
21 Sep - 28 Sep	Ryanair	direct
25 Sep - 28 Sep	Ryanair	direct
11 Sep - 18 Sep	Ryanair	direct

Also check the deals for one-way flights from Helsinki to Zadar 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 Zadar in September from 104€

Return flights