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

Return flights

05 Dec - 31 Jan	United
09 Dec - 16 Jan	LATAM Airlines Group
23 Dec - 02 Jan	LATAM Airlines Group
24 Dec - 31 Dec	LATAM Airlines Group
23 Dec - 11 Jan	LATAM Airlines Group
31 Dec - 23 Jan	LATAM Airlines Group
08 Dec - 13 Jan	LATAM Airlines Group
14 Dec - 15 Jan	LATAM Airlines Group
14 Dec - 28 Dec	LATAM Airlines Group
29 Dec - 15 Jan	Turkish Airlines
29 Dec - 23 Jan	Turkish Airlines
29 Dec - 19 Jan	LATAM Airlines Group
10 Dec - 24 Dec	United

Also check the deals for one-way flights from Buenos Aires 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 Buenos Aires to Sydney in December from 1807€

Return flights