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

Return flights

18 Sep - 01 Oct	Avianca
08 Sep - 15 Sep	Avianca
08 Sep - 29 Sep	Avianca
04 Sep - 11 Sep	Avianca
21 Sep - 08 Oct	Avianca
15 Sep - 07 Oct	Avianca
06 Sep - 15 Sep	Avianca
20 Sep - 26 Sep	Avianca
24 Sep - 06 Oct	Avianca
20 Sep - 05 Oct	Avianca
19 Sep - 26 Sep	Avianca
19 Sep - 28 Sep	Avianca
15 Sep - 25 Sep	Avianca
18 Sep - 26 Sep	Avianca
18 Sep - 24 Sep	Avianca
26 Sep - 04 Oct	Avianca
10 Sep - 06 Oct	Avianca

Also check the deals for one-way flights from Buenos Aires to Mexico City in September.

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 Buenos Aires to Mexico City in September from 564€

Return flights