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

Return flights

29 Oct - 27 Nov	Ryanair
14 Oct - 21 Oct	Ryanair
18 Oct - 26 Oct	HiSky Europe
13 Oct - 20 Oct	Ryanair
19 Oct - 09 Nov	Ryanair
01 Oct - 21 Oct	Ryanair
27 Oct - 03 Nov	Ryanair
28 Oct - 18 Nov	Ryanair
29 Oct - 05 Nov	Ryanair
28 Oct - 04 Nov	Ryanair
23 Oct - 05 Nov	Ryanair
26 Oct - 10 Nov	Lufthansa
27 Oct - 10 Nov	Ryanair
20 Oct - 03 Nov	Ryanair
01 Oct - 15 Oct	Ryanair
01 Oct - 22 Oct	Ryanair
02 Oct - 15 Oct	Ryanair
13 Oct - 27 Oct	Ryanair
04 Oct - 13 Oct	Pegasus Airlines
12 Oct - 19 Oct	Aer Lingus

Also check the deals for one-way flights from Dublin to Sydney in October.

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 Sydney in October from 832€

Return flights