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

Return flights

26 Aug - 09 Sep	Copa
26 Aug - 08 Sep	Copa
18 Aug - 27 Aug	Avianca
19 Aug - 02 Sep	Copa
12 Aug - 02 Sep	Copa
25 Aug - 04 Sep	United
23 Aug - 04 Sep	United
26 Aug - 04 Sep	United
25 Aug - 11 Sep	Copa
10 Aug - 02 Sep	Copa
12 Aug - 06 Sep	Copa
12 Aug - 26 Aug	Copa
12 Aug - 19 Aug	Copa
19 Aug - 26 Aug	Copa
17 Aug - 26 Aug	Copa
10 Aug - 19 Aug	Copa
10 Aug - 26 Aug	Copa
12 Aug - 23 Aug	Copa
18 Aug - 24 Aug	Copa
12 Aug - 17 Aug	Copa

Also check the deals for one-way flights from Montreal to San Jose in August.

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 August from $459

Return flights