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

Return flights

28 Apr - 05 May	Volaris
07 Apr - 15 Apr	Avianca
20 Apr - 27 Apr	Copa
01 Apr - 09 Apr	Volaris
13 Apr - 20 Apr	Copa
13 Apr - 24 Apr	Copa
09 Apr - 23 Apr	Avianca
10 Apr - 24 Apr	Volaris
21 Apr - 27 Apr	Copa
29 Apr - 04 May	Arajet
09 Apr - 13 Apr	Copa
06 Apr - 17 Apr	Copa
29 Apr - 05 May	Arajet
30 Apr - 05 May	Arajet
30 Apr - 21 May	Avianca
27 Apr - 05 May	Copa
22 Apr - 11 May	Avianca
29 Apr - 13 May	Avianca
30 Apr - 15 May	Avianca
27 Apr - 04 May	Avianca

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

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 April from $686

Return flights