AirHint found the following cheapest return flights from Zagreb (ZAG) to Vienna (VIE) in August 2025 (see full year).

Return flights

31 Aug - 12 Sep	Ryanair
28 Aug - 31 Aug	Air Serbia
15 Aug - 22 Aug	Air Serbia
21 Aug - 24 Aug	Air Serbia
29 Aug - 31 Aug	Air Serbia
31 Aug - 12 Sep	Austrian Airlines	direct
11 Aug - 15 Aug	Austrian Airlines	direct
28 Aug - 31 Aug	Austrian Airlines	direct
29 Aug - 31 Aug	Austrian Airlines	direct
01 Aug - 07 Aug	Air Serbia
03 Aug - 06 Aug	Air Serbia
11 Aug - 14 Aug	Austrian Airlines	direct

Also check the deals for one-way flights from Zagreb to Vienna 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 Zagreb to Vienna in August from 166€

Return flights