Cheapest return flights from Miami to Buenos Aires in September from $590

Best time to book flights for Miami (MIA) to Buenos Aires (AEP) flights at AirHint

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

Return flights

11 Sep - 17 Sep Avianca
04 Sep - 15 Sep Arajet
09 Sep - 17 Sep Arajet
05 Sep - 07 Sep Sky Airline
25 Sep - 30 Sep Arajet
18 Sep - 05 Oct Arajet
01 Sep - 15 Sep Sky Airline
11 Sep - 13 Oct Arajet
08 Sep - 17 Sep LATAM Airlines Group
08 Sep - 22 Sep Avianca
11 Sep - 23 Sep Arajet
10 Sep - 22 Sep Avianca
10 Sep - 20 Oct Avianca
12 Sep - 01 Oct Avianca

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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires