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

Return flights

18 Aug - 25 Aug	Avianca
14 Aug - 20 Aug	Frontier Airlines
20 Aug - 27 Aug	Avianca
07 Aug - 18 Aug	Avianca
09 Aug - 11 Aug	Avianca
22 Aug - 30 Aug	Avianca
25 Aug - 29 Aug	Copa
15 Aug - 01 Sep	Avianca
11 Aug - 28 Aug	Copa
09 Aug - 16 Aug	Avianca
08 Aug - 12 Aug	Copa
27 Aug - 01 Sep	Avianca
24 Aug - 03 Sep	GOL Linhas Aéreas
29 Aug - 14 Sep	LATAM Airlines Group
29 Aug - 13 Sep	Avianca
21 Aug - 15 Sep	Spirit Airlines
20 Aug - 12 Sep	Sky Airline
29 Aug - 07 Sep	Sky Airline
28 Aug - 08 Sep	LATAM Airlines Group
29 Aug - 08 Sep	LATAM Airlines Group

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

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 Miami to Buenos Aires in August from 488€

Return flights