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

Return flights

30 Sep - 07 Oct	JetSmart
02 Sep - 09 Sep	LATAM Airlines Group
20 Sep - 05 Oct	JetSmart
04 Sep - 10 Sep	JetSmart
01 Sep - 04 Sep	LATAM Airlines Group
07 Sep - 12 Sep	LATAM Airlines Group
05 Sep - 17 Sep	LATAM Airlines Group
05 Sep - 16 Sep	LATAM Airlines Group
03 Sep - 12 Sep	LATAM Airlines Group
05 Sep - 08 Sep	LATAM Airlines Group
05 Sep - 11 Sep	LATAM Airlines Group
02 Sep - 11 Sep	LATAM Airlines Group

Also check the deals for one-way flights from Rio Negro 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.

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Cheapest return flights from Rio Negro to Buenos Aires in September from $494

Return flights