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

Return flights

18 Mar - 28 Apr	Volaris
10 Mar - 18 Mar	LATAM Airlines Group
12 Mar - 22 Mar	LATAM Airlines Group
05 Mar - 18 Mar	Volaris
14 Mar - 20 Mar	Volaris
05 Mar - 11 Mar	Arajet
20 Mar - 27 Mar	Volaris
19 Mar - 28 Mar	Volaris
04 Mar - 08 Apr	Volaris
12 Mar - 23 Mar	LATAM Airlines Group
16 Mar - 23 Mar	LATAM Airlines Group
10 Mar - 17 Mar	LATAM Airlines Group
16 Mar - 03 Apr	Copa
15 Mar - 03 Apr	Copa
30 Mar - 09 Apr	Volaris
13 Mar - 25 Apr	Avianca
19 Mar - 03 Apr	Volaris
17 Mar - 01 Apr	LATAM Airlines Group
17 Mar - 03 Apr	LATAM Airlines Group
20 Mar - 01 Apr	LATAM Airlines Group

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

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 March from $596

Return flights