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

Return flights

05 Dec - 12 Dec	Avianca
01 Dec - 08 Dec	Copa
26 Dec - 02 Jan	Arajet
06 Dec - 13 Dec	Aeromexico
14 Dec - 22 Dec	Avianca
11 Dec - 22 Dec	GOL Linhas Aéreas
18 Dec - 31 Jan	Avianca
25 Dec - 01 Jan	Avianca
12 Dec - 25 Dec	Avianca
13 Dec - 22 Dec	LATAM Airlines Group
12 Dec - 21 Dec	Copa
31 Dec - 17 Jan	Aeromexico
19 Dec - 05 Jan	Arajet
25 Dec - 30 Dec	Avianca
11 Dec - 16 Jan	Avianca
12 Dec - 09 Jan	Arajet
19 Dec - 09 Jan	Arajet
27 Dec - 05 Jan	LATAM Airlines Group
18 Dec - 01 Jan	Avianca
20 Dec - 31 Dec	Avianca

Also check the deals for one-way flights from Cancun 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 Cancun to Buenos Aires in December from 471€

Return flights