AirHint found the following cheapest return flights from Montreal (YUL) to Buenos Aires (EZE) in September 2026 (see full year).
Return flights
| 03 Sep - 10 Sep | Copa | ||
| 02 Sep - 09 Sep | Copa | ||
| 04 Sep - 11 Sep | Avianca | ||
| 01 Sep - 08 Sep | Copa | ||
| 05 Sep - 12 Sep | Copa | ||
| 29 Sep - 06 Oct | Air Transat |
Also check the deals for one-way flights from Montreal to Buenos Aires in September.
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