AirHint found the following cheapest return flights from Mexico City (MEX) to Buenos Aires (EZE) in December 2025 (see full year).

Return flights

02 Dec - 11 Dec	Avianca
04 Dec - 11 Dec	Avianca
07 Dec - 11 Dec	Avianca
10 Dec - 31 Dec	Copa
09 Dec - 31 Dec	Copa
01 Dec - 08 Dec	Copa
07 Dec - 10 Dec	Arajet
03 Dec - 09 Dec	Copa
01 Dec - 11 Dec	Copa
02 Dec - 09 Dec	Copa
10 Dec - 22 Jan	LATAM Airlines Group
30 Dec - 22 Jan	LATAM Airlines Group
30 Dec - 23 Jan	LATAM Airlines Group
05 Dec - 21 Jan	LATAM Airlines Group
09 Dec - 24 Jan	LATAM Airlines Group
24 Dec - 01 Jan	Arajet
24 Dec - 31 Jan	Arajet
10 Dec - 26 Jan	Avianca
10 Dec - 24 Jan	Avianca
30 Dec - 27 Jan	Avianca

Also check the deals for one-way flights from Mexico City 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 Mexico City to Buenos Aires in December from 539€

Return flights