AirHint found the following cheapest return flights from Dublin (DUB) to Zakynthos (ZTH) in August 2025 (see full year).

Return flights

20 Aug - 23 Aug	Ryanair
30 Aug - 05 Sep	Ryanair
27 Aug - 03 Sep	Ryanair
09 Aug - 23 Aug	Ryanair
29 Aug - 01 Sep	SWISS
25 Aug - 03 Sep	Ryanair
30 Aug - 04 Sep	Ryanair
16 Aug - 23 Aug	Ryanair
28 Aug - 04 Sep	Ryanair
30 Aug - 06 Sep	Ryanair
16 Aug - 23 Aug	Ryanair	direct
30 Aug - 06 Sep	Ryanair	direct
09 Aug - 13 Aug	Ryanair
13 Aug - 20 Aug	Ryanair
06 Aug - 13 Aug	Scandinavian Airlines
18 Aug - 20 Aug	Ryanair
04 Aug - 09 Aug	Ryanair
20 Aug - 24 Aug	SWISS
30 Aug - 13 Sep	Ryanair	direct
23 Aug - 06 Sep	Ryanair	direct

Also check the deals for one-way flights from Dublin to Zakynthos 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 Dublin to Zakynthos in August from 191€

Return flights