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

Return flights

11 Aug - 18 Aug	Scoot
11 Aug - 27 Aug	China Eastern
18 Aug - 04 Sep	China Eastern
05 Aug - 12 Aug	China Eastern
22 Aug - 04 Sep	China Eastern
27 Aug - 10 Sep	China Eastern
22 Aug - 13 Sep	China Eastern
06 Aug - 13 Aug	China Eastern
18 Aug - 05 Sep	China Eastern
22 Aug - 29 Aug	China Eastern
04 Aug - 24 Aug	Air China
18 Aug - 18 Sep	China Eastern
04 Aug - 14 Aug	China Eastern
19 Aug - 18 Sep	China Southern
25 Aug - 22 Sep	Scoot
10 Aug - 21 Aug	China Southern
10 Aug - 22 Aug	China Southern
29 Aug - 17 Sep	Air India
14 Aug - 30 Aug	China Southern
19 Aug - 19 Sep	China Southern

Also check the deals for one-way flights from Sydney to Dublin 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 Sydney to Dublin in August from $1082

Return flights