Cheapest return flights from Rio De Janeiro to Buenos Aires in September from $425

Best time to book flights for Rio De Janeiro (SDU) to Buenos Aires (AEP) flights at AirHint

AirHint found the following cheapest return flights from Rio De Janeiro (SDU) to Buenos Aires (AEP) in September 2025 (see full year).

Return flights

12 Sep - 21 Sep LATAM Airlines Group
17 Sep - 21 Sep LATAM Airlines Group
03 Sep - 10 Sep LATAM Airlines Group
17 Sep - 20 Sep LATAM Airlines Group
12 Sep - 16 Sep LATAM Airlines Group
30 Sep - 07 Oct LATAM Airlines Group
12 Sep - 18 Sep LATAM Airlines Group
20 Sep - 22 Sep LATAM Airlines Group
12 Sep - 15 Sep LATAM Airlines Group

Also check the deals for one-way flights from Rio De Janeiro 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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