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

Return flights

03 Dec - 05 Jan	Turkish Airlines
05 Dec - 28 Jan	Turkish Airlines
04 Dec - 23 Jan	Turkish Airlines
04 Dec - 12 Jan	Turkish Airlines
05 Dec - 30 Jan	Turkish Airlines
05 Dec - 29 Jan	Turkish Airlines
11 Dec - 26 Jan	Turkish Airlines
26 Dec - 31 Jan	United
01 Dec - 25 Jan	United
05 Dec - 19 Jan	United
27 Dec - 31 Dec	Jetstar
09 Dec - 10 Dec	LATAM Airlines Group
01 Dec - 08 Dec	LATAM Airlines Group
08 Dec - 27 Dec	Air Canada
15 Dec - 31 Dec	Jetstar
16 Dec - 31 Dec	LATAM Airlines Group
08 Dec - 25 Dec	Qantas
17 Dec - 31 Dec	LATAM Airlines Group
01 Dec - 09 Dec	Emirates

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 1629€

Return flights