AirHint found the following cheapest return flights from Montreal (YUL) to Buenos Aires (EZE) in March 2026 (see full year).

Return flights

09 Mar - 16 Mar	Copa
10 Mar - 17 Mar	Copa
12 Mar - 19 Mar	Copa
16 Mar - 23 Mar	Copa
19 Mar - 26 Mar	Copa
23 Mar - 30 Mar	Copa
22 Mar - 29 Mar	Avianca
09 Mar - 25 Mar	Copa
11 Mar - 18 Mar	Copa
16 Mar - 22 Mar	Copa
16 Mar - 16 Apr	Avianca
22 Mar - 20 Apr	Air Canada
16 Mar - 14 Apr	Copa
25 Mar - 13 Apr	Avianca
27 Mar - 03 Apr	Copa
31 Mar - 07 Apr	Copa
26 Mar - 02 Apr	Copa
30 Mar - 06 Apr	Copa
25 Mar - 01 Apr	Air Canada
27 Mar - 12 Apr	Copa

Also check the deals for one-way flights from Montreal 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 Montreal to Buenos Aires in March from $749

Return flights