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

Return flights

10 Sep - 22 Sep	Scoot
02 Sep - 13 Sep	Scoot
03 Sep - 14 Sep	Scoot
09 Sep - 20 Sep	Scoot
04 Sep - 11 Sep	China Eastern
14 Sep - 21 Sep	Etihad Airways
11 Sep - 18 Sep	China Southern
04 Sep - 17 Sep	China Southern
05 Sep - 07 Sep	China Eastern
03 Sep - 18 Sep	Air India
22 Sep - 13 Oct	Etihad Airways
29 Sep - 20 Oct	Etihad Airways
21 Sep - 07 Oct	Turkish Airlines
21 Sep - 08 Oct	Etihad Airways
26 Sep - 19 Oct	Etihad Airways
15 Sep - 30 Oct	Etihad Airways
28 Sep - 10 Oct	Etihad Airways
26 Sep - 23 Oct	Etihad Airways
24 Sep - 01 Oct	Turkish Airlines
27 Sep - 31 Oct	Emirates

Also check the deals for one-way flights from Sydney to Dublin 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 Sydney to Dublin in September from $1013

Return flights