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

Return flights

24 Aug - 26 Aug	LATAM Airlines Group
21 Aug - 04 Sep	LATAM Airlines Group
19 Aug - 05 Sep	LATAM Airlines Group
24 Aug - 09 Sep	LATAM Airlines Group
27 Aug - 08 Sep	LATAM Airlines Group
27 Aug - 09 Sep	Qantas
10 Aug - 17 Aug	Qantas
21 Aug - 24 Sep	LATAM Airlines Group
12 Aug - 02 Sep	Qantas
11 Aug - 16 Sep	LATAM Airlines Group
07 Aug - 10 Aug	Qantas
29 Aug - 12 Sep	Qantas
08 Aug - 15 Aug	Qantas
21 Aug - 05 Sep	Qantas
16 Aug - 17 Aug	LATAM Airlines Group
01 Aug - 09 Aug	LATAM Airlines Group
03 Aug - 30 Aug	LATAM Airlines Group
08 Aug - 09 Aug	Qatar Airways
03 Aug - 17 Aug	Qantas
16 Aug - 27 Aug	LATAM Airlines Group

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

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 August from 1174€

Return flights