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

Return flights

15 Dec - 15 Jan	GOL Linhas Aéreas
14 Dec - 12 Jan	Arajet
24 Dec - 29 Jan	Arajet
24 Dec - 28 Jan	Arajet
01 Dec - 08 Dec	Avianca
24 Dec - 30 Jan	Arajet
24 Dec - 31 Jan	Arajet
26 Dec - 09 Jan	Sky Airline
26 Dec - 03 Jan	Sky Airline
22 Dec - 29 Jan	Avianca
22 Dec - 28 Jan	Avianca
19 Dec - 26 Dec	GOL Linhas Aéreas
13 Dec - 18 Dec	Avianca
17 Dec - 20 Dec	Arajet
17 Dec - 24 Dec	LATAM Airlines Group
18 Dec - 28 Dec	LATAM Airlines Group
13 Dec - 27 Dec	Avianca

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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from Miami to Buenos Aires in December from 593€

Return flights