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

Return flights

21 Oct - 28 Oct	Avianca
20 Oct - 06 Nov	Avianca
09 Oct - 16 Oct	Avianca
06 Oct - 16 Oct	Avianca
02 Oct - 23 Oct	Avianca
31 Oct - 09 Nov	Avianca
30 Oct - 08 Nov	Avianca
09 Oct - 25 Oct	Avianca
20 Oct - 27 Oct	Avianca
19 Oct - 03 Nov	Avianca
18 Oct - 01 Nov	Avianca
06 Oct - 27 Oct	Avianca
20 Oct - 03 Nov	Avianca
09 Oct - 20 Oct	Avianca
28 Oct - 16 Nov	Avianca
04 Oct - 25 Oct	GOL Linhas Aéreas
13 Oct - 22 Oct	Avianca
12 Oct - 03 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 479€

Return flights