Cheapest return flights from Montreal to Buenos Aires in September from $669

Best time to book flights for Montreal (YUL) to Buenos Aires (EZE) flights at AirHint

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

Return flights

29 Sep - 13 Oct Avianca
15 Sep - 22 Sep Avianca
12 Sep - 19 Sep Avianca
22 Sep - 29 Sep Avianca
17 Sep - 29 Sep Copa
17 Sep - 24 Sep Copa
23 Sep - 30 Sep Copa
16 Sep - 23 Sep Copa
18 Sep - 25 Sep Copa
25 Sep - 02 Oct Copa
24 Sep - 01 Oct Copa
08 Sep - 15 Sep Delta
05 Sep - 29 Sep Air Canada
26 Sep - 03 Oct Copa
27 Sep - 04 Oct Copa

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

Skyscanner

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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