AirHint found the following cheapest return flights from Mexico City (MEX) to Buenos Aires (EZE) in October 2025 (see full year).

Return flights

15 Oct - 22 Oct	Avianca
24 Oct - 31 Oct	Avianca
22 Oct - 29 Oct	Avianca
10 Oct - 21 Oct	Avianca
07 Oct - 09 Oct	Avianca
21 Oct - 31 Oct	Avianca
14 Oct - 28 Oct	Avianca
01 Oct - 20 Oct	Avianca
13 Oct - 20 Oct	Avianca
06 Oct - 09 Oct	Avianca
23 Oct - 07 Nov	Avianca
28 Oct - 13 Nov	Avianca
24 Oct - 02 Nov	Avianca
07 Oct - 07 Nov	Avianca
28 Oct - 01 Nov	Avianca
26 Oct - 02 Nov	LATAM Airlines Group
16 Oct - 13 Nov	Avianca
24 Oct - 06 Nov	Avianca
25 Oct - 02 Nov	Avianca
28 Oct - 05 Nov	Avianca

Also check the deals for one-way flights from Mexico City 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 Mexico City to Buenos Aires in October from 548€

Return flights