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

Return flights

19 Apr - 19 May	Arajet
19 Apr - 26 Apr	Arajet
12 Apr - 18 Apr	Arajet
22 Apr - 30 Apr	Arajet
09 Apr - 16 Apr	Arajet
25 Apr - 02 May	Viva
13 Apr - 28 Apr	Viva
13 Apr - 20 Apr	Viva
09 Apr - 15 Apr	Arajet
15 Apr - 19 Apr	Arajet
16 Apr - 19 Apr	Arajet
09 Apr - 23 Apr	Arajet
25 Apr - 01 May	Avianca
29 Apr - 13 May	Volaris
23 Apr - 07 May	LATAM Airlines Group

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 $699

Return flights