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

Return flights

02 Dec - 28 Dec	LATAM Airlines Group
14 Dec - 16 Dec	LATAM Airlines Group
28 Dec - 28 Jan	LATAM Airlines Group
27 Dec - 28 Jan	Turkish Airlines
31 Dec - 30 Jan	Turkish Airlines
10 Dec - 28 Dec	Jetstar
27 Dec - 24 Jan	Turkish Airlines
01 Dec - 31 Jan	LATAM Airlines Group
02 Dec - 06 Jan	LATAM Airlines Group
04 Dec - 02 Jan	LATAM Airlines Group
08 Dec - 26 Jan	LATAM Airlines Group
02 Dec - 01 Jan	LATAM Airlines Group
04 Dec - 17 Jan	LATAM Airlines Group
24 Dec - 31 Dec	LATAM Airlines Group
15 Dec - 29 Dec	LATAM Airlines Group
08 Dec - 12 Dec	United
07 Dec - 13 Dec	United
07 Dec - 12 Dec	United

Also check the deals for one-way flights from Sydney to Buenos Aires 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 Sydney to Buenos Aires in December from $1865

Return flights