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

Return flights

01 Dec - 14 Dec	LATAM Airlines Group
03 Dec - 30 Jan	United
14 Dec - 19 Jan	United
14 Dec - 24 Jan	United
27 Dec - 24 Jan	United
26 Dec - 19 Jan	United
25 Dec - 30 Jan	United
13 Dec - 24 Jan	United
28 Dec - 19 Jan	Jetstar
26 Dec - 26 Jan	United
26 Dec - 25 Jan	United
01 Dec - 21 Dec	LATAM Airlines Group
22 Dec - 31 Dec	LATAM Airlines Group
04 Dec - 26 Dec	Qantas
06 Dec - 27 Dec	American Airlines
12 Dec - 27 Dec	United
01 Dec - 22 Dec	United
04 Dec - 27 Dec	LATAM Airlines Group
15 Dec - 15 Dec	Jetstar
13 Dec - 29 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 1570€

Return flights