AirHint found the following cheapest one-way flights from Cancun (CUN) to Buenos Aires (AEP) in December 2025 (see full year).

One-Way flights

27 Dec	Sky Airline
09 Dec	Sky Airline
30 Dec	Sky Airline
06 Dec	Sky Airline
25 Dec	Sky Airline
28 Dec	LATAM Airlines Group
23 Dec	LATAM Airlines Group
29 Dec	LATAM Airlines Group
13 Dec	Arajet
16 Dec	Arajet

Also check the deals for return 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 one-way flights from Cancun to Buenos Aires in December from 199€

One-Way flights