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

Return flights

16 Oct - 29 Oct	Arajet
30 Oct - 10 Nov	Arajet
28 Oct - 12 Nov	Arajet
30 Oct - 05 Nov	Arajet
28 Oct - 08 Nov	Avianca
29 Oct - 13 Nov	Avianca
28 Oct - 10 Nov	Avianca
28 Oct - 06 Nov	Avianca
28 Oct - 04 Nov	Avianca
28 Oct - 13 Nov	Avianca
30 Oct - 25 Nov	Avianca
22 Oct - 29 Oct	Arajet
03 Oct - 10 Oct	Avianca
16 Oct - 23 Oct	Arajet
07 Oct - 21 Oct	Arajet
06 Oct - 14 Oct	Avianca
07 Oct - 16 Oct	Arajet
01 Oct - 15 Oct	Arajet
14 Oct - 22 Oct	Aeromexico
07 Oct - 20 Oct	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 487€

Return flights