Cheapest return flights from Sao Paulo to Buenos Aires in September from $273

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

Return flights

22 Sep - 13 Oct GOL Linhas Aéreas
01 Sep - 03 Sep Azul Airlines
20 Sep - 27 Sep GOL Linhas Aéreas
10 Sep - 17 Sep GOL Linhas Aéreas
30 Sep - 04 Oct Azul Airlines
17 Sep - 30 Sep GOL Linhas Aéreas
27 Sep - 30 Sep GOL Linhas Aéreas
17 Sep - 18 Sep GOL Linhas Aéreas
14 Sep - 19 Sep LATAM Airlines Group
17 Sep - 29 Sep GOL Linhas Aéreas
18 Sep - 19 Sep GOL Linhas Aéreas
14 Sep - 17 Sep LATAM Airlines Group
28 Sep - 05 Oct LATAM Airlines Group
27 Sep - 05 Oct GOL Linhas Aéreas
14 Sep - 04 Oct LATAM Airlines Group
28 Sep - 04 Oct GOL Linhas Aéreas
29 Sep - 04 Oct Azul Airlines
27 Sep - 04 Oct GOL Linhas Aéreas
24 Sep - 04 Oct GOL Linhas Aéreas
24 Sep - 01 Oct GOL Linhas Aéreas

Also check the deals for one-way flights from Sao Paulo 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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