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

Return flights

10 Sep - 16 Sep	LATAM Airlines Group
07 Sep - 15 Oct	LATAM Airlines Group
02 Sep - 15 Sep	LATAM Airlines Group
24 Sep - 28 Oct	Turkish Airlines
13 Sep - 09 Oct	LATAM Airlines Group
23 Sep - 05 Oct	LATAM Airlines Group
04 Sep - 09 Oct	LATAM Airlines Group
12 Sep - 27 Sep	LATAM Airlines Group
23 Sep - 25 Sep	LATAM Airlines Group
29 Sep - 20 Oct	LATAM Airlines Group
03 Sep - 01 Oct	LATAM Airlines Group
24 Sep - 19 Oct	Turkish Airlines
23 Sep - 19 Oct	Turkish Airlines
10 Sep - 25 Sep	LATAM Airlines Group
19 Sep - 24 Oct	LATAM Airlines Group

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

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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from Sydney to Buenos Aires in September from 1225€

Return flights