Cheapest return flights from Miami to Buenos Aires in September from $644

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

Return flights

18 Sep - 20 Sep LATAM Airlines Group
07 Sep - 12 Sep LATAM Airlines Group
11 Sep - 16 Sep LATAM Airlines Group
26 Sep - 29 Sep LATAM Airlines Group
01 Sep - 05 Sep LATAM Airlines Group
16 Sep - 30 Sep Arajet
23 Sep - 27 Sep LATAM Airlines Group
08 Sep - 15 Sep LATAM Airlines Group
21 Sep - 01 Oct Avianca
02 Sep - 09 Sep Arajet
03 Sep - 10 Sep Sky Airline

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

Skyscanner

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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