AirHint found the following cheapest return flights from Montreal (YUL) to San Jose (SJO) in October 2026 (see full year).

Return flights

27 Oct - 03 Nov	Air Canada
28 Oct - 04 Nov	Air Canada
29 Oct - 05 Nov	Air Canada
21 Oct - 28 Oct	Air Canada	direct
01 Oct - 08 Oct	Air Canada
20 Oct - 27 Oct	Air Canada
07 Oct - 14 Oct	Copa
14 Oct - 21 Oct	Copa
15 Oct - 22 Oct	Air Canada
02 Oct - 09 Oct	Avianca
04 Oct - 11 Oct	Avianca
05 Oct - 12 Oct	Avianca
09 Oct - 16 Oct	Avianca
25 Oct - 01 Nov	Avianca
26 Oct - 02 Nov	Avianca
30 Oct - 06 Nov	Avianca
31 Oct - 07 Nov	Air Canada

Also check the deals for one-way 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.

Book a cheap hotel in San Jose

Cheap car rent in San Jose

Cheapest return flights from Montreal to San Jose in October from $367

Return flights