Cheapest return flights from Sydney to Buenos Aires in September from $1597

Best time to book flights for Sydney (SYD) to Buenos Aires (AEP) flights at AirHint

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

Return flights

01 Sep - 08 Sep LATAM Airlines Group
18 Sep - 23 Oct LATAM Airlines Group
16 Sep - 30 Sep LATAM Airlines Group
29 Sep - 24 Oct LATAM Airlines Group
10 Sep - 01 Oct LATAM Airlines Group
14 Sep - 14 Oct LATAM Airlines Group
20 Sep - 03 Oct LATAM Airlines Group

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

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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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