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

Return flights

05 Dec - 12 Dec	Sky Airline
05 Dec - 08 Dec	Sky Airline
08 Dec - 15 Dec	Sky Airline
06 Dec - 22 Jan	Sky Airline
26 Dec - 17 Jan	Sky Airline
07 Dec - 11 Dec	Sky Airline
03 Dec - 10 Dec	Sky Airline
02 Dec - 11 Dec	Arajet
26 Dec - 16 Jan	Sky Airline
05 Dec - 15 Dec	Sky Airline
04 Dec - 16 Dec	Sky Airline
03 Dec - 07 Dec	Sky Airline
03 Dec - 15 Dec	LATAM Airlines Group
17 Dec - 20 Jan	GOL Linhas Aéreas
15 Dec - 14 Jan	LATAM Airlines Group
03 Dec - 13 Jan	Sky Airline
14 Dec - 13 Jan	Arajet
12 Dec - 12 Jan	Sky Airline
12 Dec - 17 Jan	Sky Airline
27 Dec - 09 Jan	Sky Airline

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

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 December from 499€

Return flights