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

Return flights

04 Aug - 11 Aug	Copa
06 Aug - 13 Aug	Copa
10 Aug - 17 Aug	Avianca
12 Aug - 19 Aug	Avianca
03 Aug - 10 Aug	Avianca
05 Aug - 12 Aug	Avianca
07 Aug - 14 Aug	Avianca
01 Aug - 08 Aug	Copa
19 Aug - 26 Aug	Air Canada
26 Aug - 02 Sep	Air Canada
09 Aug - 16 Aug	Avianca
27 Aug - 03 Sep	Air Canada

Also check the deals for one-way flights from Montreal 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 Montreal to Buenos Aires in August from $810

Return flights