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

Return flights

07 May - 21 May	Avianca
11 May - 26 May	Avianca
23 May - 30 May	Avianca
21 May - 26 May	Avianca
02 May - 09 May	Avianca
02 May - 16 May	Avianca
02 May - 12 May	Avianca
24 May - 30 May	Avianca
11 May - 16 May	Avianca
06 May - 27 May	Avianca
25 May - 05 Jun	Avianca
04 May - 14 Jun	Avianca
25 May - 15 Jun	Avianca
25 May - 01 Jun	Avianca
22 May - 05 Jun	Avianca
31 May - 30 Jun	Avianca
22 May - 05 Jun	Air Transat	direct
25 May - 05 Jun	Air Transat	direct
29 May - 05 Jun	Air Transat	direct
25 May - 01 Jun	Air Transat	direct

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

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 May from 254€

Return flights