Cheapest return flights from Sydney to Buenos Aires in September from $1628

AirHint found the following cheapest return flights from Sydney (SYD) to Buenos Aires (AEP) in September 2026 (see full year).

Return flights

18 Sep - 22 Sep LATAM Airlines Group
01 Sep - 20 Sep LATAM Airlines Group
30 Sep - 21 Oct LATAM Airlines Group
01 Sep - 10 Oct LATAM Airlines Group
11 Sep - 25 Sep LATAM Airlines Group
25 Sep - 16 Oct LATAM Airlines Group
24 Sep - 13 Oct LATAM Airlines Group
08 Sep - 22 Sep Qantas
09 Sep - 16 Sep LATAM Airlines Group

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

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