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 - 03 Oct	LATAM Airlines Group
30 Sep - 10 Oct	LATAM Airlines Group
23 Sep - 01 Oct	Copa
19 Sep - 30 Sep	LATAM Airlines Group
17 Sep - 07 Oct	Avianca
25 Sep - 04 Oct	LATAM Airlines Group
18 Sep - 23 Sep	Copa
18 Sep - 29 Sep	Copa
21 Sep - 30 Sep	JetSmart
25 Sep - 07 Oct	JetSmart
19 Sep - 22 Sep	JetSmart
19 Sep - 21 Sep	JetSmart
20 Sep - 27 Sep	Avianca
20 Sep - 01 Oct	JetSmart
20 Sep - 28 Sep	JetSmart
18 Sep - 21 Sep	Copa
21 Sep - 28 Sep	Avianca
29 Sep - 07 Oct	Avianca

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 487€

Return flights