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

Return flights

01 Oct - 05 Oct	Arajet
07 Oct - 14 Oct	Arajet
01 Oct - 06 Oct	Arajet
15 Oct - 22 Oct	Arajet
25 Oct - 22 Nov	Arajet
06 Oct - 20 Oct	Avianca
10 Oct - 17 Oct	LATAM Airlines Group
02 Oct - 13 Oct	LATAM Airlines Group
26 Oct - 31 Oct	LATAM Airlines Group
10 Oct - 22 Oct	LATAM Airlines Group
10 Oct - 30 Oct	LATAM Airlines Group
31 Oct - 14 Nov	Copa
15 Oct - 01 Nov	Aeromexico
29 Oct - 02 Nov	LATAM Airlines Group
30 Oct - 05 Nov	Copa
26 Oct - 11 Nov	Copa
31 Oct - 11 Nov	Copa
31 Oct - 02 Nov	Copa
24 Oct - 01 Nov	LATAM Airlines Group
28 Oct - 11 Nov	Arajet

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 $660

Return flights