AirHint found the following cheapest return flights from Montreal (YUL) to San Jose (SJO) in September 2026 (see full year).
Return flights
| 01 Sep - 02 Sep | Copa | ||
| 01 Sep - 15 Sep | United | ||
| 02 Sep - 14 Sep | United | ||
| 08 Sep - 16 Sep | Air Canada | ||
| 15 Sep - 03 Oct | Air Canada | ||
| 03 Sep - 12 Sep | Air Canada | ||
| 06 Sep - 16 Sep | Air Canada |
Also check the deals for one-way flights from Montreal to San Jose in September.
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