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

Return flights

28 Aug - 03 Sep	Lufthansa
22 Aug - 29 Aug	Lufthansa
23 Aug - 26 Aug	Turkish Airlines
26 Aug - 29 Aug	Ryanair
04 Aug - 15 Aug	Lufthansa
13 Aug - 17 Aug	LOT
07 Aug - 09 Aug	Lufthansa
08 Aug - 10 Aug	Lufthansa
14 Aug - 17 Aug	Ryanair
05 Aug - 17 Aug	LOT
06 Aug - 17 Aug	LOT

Also check the deals for one-way flights from Zagreb to Tallinn 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 Tallinn in August from $224

Return flights