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

Return flights

04 May - 18 May	Avianca
18 May - 29 May	Avianca
04 May - 24 May	Avianca
04 May - 25 May	Avianca
04 May - 10 May	Avianca
04 May - 11 May	Avianca
13 May - 20 May	Avianca
17 May - 24 May	Avianca
18 May - 25 May	Avianca
20 May - 27 May	Avianca
27 May - 03 Jun	Avianca
26 May - 02 Jun	Air Canada
25 May - 01 Jun	Air Transat	direct
28 May - 04 Jun	Avianca
15 May - 05 Jun	Air Transat	direct
22 May - 05 Jun	Air Transat	direct
29 May - 05 Jun	Air Transat	direct
25 May - 07 Jun	Air Canada
24 May - 06 Jun	Air Canada	direct
16 May - 06 Jun	Air Canada

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.

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Cheapest return flights from Montreal to San Jose in May from 271€

Return flights