AirHint found the following cheapest return flights from Montreal (YUL) to Buenos Aires (EZE) in July 2025 (see full year).

Return flights

23 Jul - 08 Aug	Delta
22 Jul - 29 Jul	Delta
23 Jul - 30 Jul	Copa
28 Jul - 04 Aug	Copa
21 Jul - 28 Jul	Copa
24 Jul - 31 Jul	Copa
20 Jul - 27 Jul	LATAM Airlines Group
27 Jul - 03 Aug	Copa
27 Jul - 09 Aug	Copa
25 Jul - 01 Aug	Arajet
29 Jul - 05 Aug	Copa
26 Jul - 02 Aug	Arajet
20 Jul - 24 Jul	Copa
30 Jul - 06 Aug	Copa
31 Jul - 07 Aug	WestJet
31 Jul - 30 Aug	Porter Airlines (Canada) Ltd

Also check the deals for one-way flights from Montreal to Buenos Aires in July.

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 July from $838

Return flights