AirHint found the following cheapest return flights from Mexico City (MEX) to Buenos Aires (EZE) in August 2026 (see full year).

Return flights

10 Aug - 18 Aug	Arajet
09 Aug - 18 Aug	Arajet
28 Aug - 05 Sep	Avianca
18 Aug - 29 Aug	Avianca
19 Aug - 29 Aug	Avianca
18 Aug - 31 Aug	Avianca
25 Aug - 12 Sep	Avianca
29 Aug - 05 Sep	Avianca
18 Aug - 27 Aug	Avianca
14 Aug - 22 Aug	Avianca
29 Aug - 07 Sep	Avianca
21 Aug - 25 Aug	Avianca
20 Aug - 26 Aug	Avianca
20 Aug - 24 Aug	Avianca
30 Aug - 19 Sep	Viva
30 Aug - 05 Sep	Viva
30 Aug - 12 Sep	Viva
30 Aug - 15 Sep	Viva
30 Aug - 18 Sep	Viva
21 Aug - 08 Sep	Viva

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

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 August from $764

Return flights