AirHint found the following cheapest one-way flights from Montreal (YUL) to San Jose (SJO) in October 2025 (see full year).

One-Way flights

28 Oct	United
26 Oct	Air Canada	direct
28 Oct	Air Canada	direct
29 Oct	United
19 Oct	Porter Airlines (Canada) Ltd
01 Oct	Porter Airlines (Canada) Ltd
06 Oct	Air Canada
31 Oct	United
31 Oct	Air Transat	direct
07 Oct	Air Canada

Also check the deals for return flights from Montreal to San Jose in October.

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 one-way flights from Montreal to San Jose in October from $173

One-Way flights