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

Return flights

16 Oct - 23 Oct	Avianca
02 Oct - 08 Oct	Sky Airline
30 Oct - 04 Nov	Sky Airline
01 Oct - 03 Nov	Sky Airline
01 Oct - 16 Oct	Sky Airline
01 Oct - 09 Oct	Sky Airline
16 Oct - 30 Oct	Sky Airline
02 Oct - 09 Oct	Sky Airline
02 Oct - 23 Oct	Sky Airline
01 Oct - 22 Oct	Sky Airline
30 Oct - 03 Nov	Sky Airline
09 Oct - 16 Oct	Sky Airline
13 Oct - 20 Oct	LATAM Airlines Group
02 Oct - 04 Nov	LATAM Airlines Group
31 Oct - 14 Nov	LATAM Airlines Group

Also check the deals for one-way flights from Cancun to Buenos Aires in October.

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 October from $594

Return flights