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

Return flights

19 Oct - 26 Oct	Qantas
23 Oct - 09 Nov	LATAM Airlines Group
26 Oct - 22 Nov	Qantas
10 Oct - 02 Nov	LATAM Airlines Group
09 Oct - 07 Nov	Qantas
25 Oct - 31 Oct	Qantas
14 Oct - 14 Nov	Qantas
25 Oct - 01 Nov	LATAM Airlines Group
25 Oct - 08 Nov	LATAM Airlines Group
01 Oct - 11 Nov	Turkish Airlines
07 Oct - 03 Nov	Turkish Airlines
29 Oct - 23 Nov	Turkish Airlines
12 Oct - 25 Oct	Turkish Airlines
01 Oct - 29 Oct	Turkish Airlines
01 Oct - 20 Oct	Turkish Airlines
07 Oct - 31 Oct	Qantas
14 Oct - 21 Oct	LATAM Airlines Group
03 Oct - 10 Oct	American Airlines
09 Oct - 24 Oct	LATAM Airlines Group
01 Oct - 16 Oct	LATAM Airlines Group

Also check the deals for one-way flights from Sydney to Buenos Aires in October.

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 October from $1143

Return flights