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

Return flights

06 Dec - 11 Jan	KLM
03 Dec - 22 Dec	Turkish Airlines
01 Dec - 14 Dec	Turkish Airlines
09 Dec - 31 Jan	SWISS
09 Dec - 18 Jan	SWISS
03 Dec - 17 Dec	Turkish Airlines
07 Dec - 22 Jan	Lufthansa
27 Dec - 21 Jan	Pegasus Airlines
02 Dec - 05 Jan	Lufthansa
26 Dec - 20 Jan	Ryanair
28 Dec - 16 Jan	Lufthansa
04 Dec - 16 Dec	Turkish Airlines
27 Dec - 13 Jan	Ryanair
26 Dec - 30 Jan	Ryanair
02 Dec - 13 Dec	Turkish Airlines
01 Dec - 08 Dec	British Airways
05 Dec - 13 Dec	Turkish Airlines
03 Dec - 26 Dec	Lufthansa
05 Dec - 16 Dec	Etihad Airways
09 Dec - 16 Dec	Pegasus Airlines

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

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 December from 993€

Return flights