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

Return flights

01 Dec - 09 Dec	Avianca
25 Dec - 25 Jan	Aeromexico
01 Dec - 08 Dec	Arajet
06 Dec - 13 Dec	Arajet
05 Dec - 12 Dec	Avianca
05 Dec - 15 Dec	Arajet
01 Dec - 22 Dec	Arajet
01 Dec - 31 Dec	Arajet
08 Dec - 31 Dec	Arajet
15 Dec - 19 Dec	Arajet
30 Dec - 20 Jan	Aeromexico
31 Dec - 21 Jan	Avianca
26 Dec - 14 Jan	Arajet
17 Dec - 26 Dec	Avianca
04 Dec - 12 Jan	Arajet
18 Dec - 31 Jan	Avianca
30 Dec - 18 Jan	Aeromexico
16 Dec - 05 Jan	Arajet
26 Dec - 05 Jan	Arajet
29 Dec - 31 Jan	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