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

Return flights

21 Oct - 31 Oct	Arajet
21 Oct - 03 Nov	Arajet
16 Oct - 26 Oct	Avianca
20 Oct - 27 Oct	Avianca
15 Oct - 18 Oct	Avianca
14 Oct - 27 Oct	Avianca
06 Oct - 19 Oct	Avianca
09 Oct - 26 Oct	Avianca
07 Oct - 16 Oct	Avianca
23 Oct - 26 Oct	Avianca
31 Oct - 07 Nov	Avianca
30 Oct - 05 Nov	Avianca
14 Oct - 07 Nov	Avianca
24 Oct - 06 Nov	Avianca
30 Oct - 03 Nov	Avianca
28 Oct - 11 Nov	Avianca
15 Oct - 23 Oct	Avianca
25 Oct - 02 Nov	Avianca
31 Oct - 03 Nov	Avianca
23 Oct - 01 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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from Mexico City to Buenos Aires in October from 486€

Return flights