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

Return flights

23 Oct - 27 Oct	Avianca
27 Oct - 11 Nov	Avianca
23 Oct - 31 Oct	Sky Airline
28 Oct - 12 Nov	Sky Airline
28 Oct - 11 Nov	Sky Airline
23 Oct - 03 Nov	Sky Airline
28 Oct - 08 Nov	Sky Airline
25 Oct - 04 Nov	Sky Airline
27 Oct - 27 Nov	Avianca
21 Oct - 28 Oct	Sky Airline
29 Oct - 07 Nov	Avianca
29 Oct - 08 Nov	LATAM Airlines Group
27 Oct - 13 Nov	LATAM Airlines Group
23 Oct - 30 Oct	Sky Airline
22 Oct - 29 Oct	LATAM Airlines Group
19 Oct - 25 Oct	LATAM Airlines Group
18 Oct - 24 Oct	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 496€

Return flights