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

Return flights

20 May - 24 May	Arajet
05 May - 12 May	United
02 May - 06 May	United
06 May - 17 May	Arajet
06 May - 10 May	Arajet
06 May - 12 May	United
08 May - 17 May	Arajet
06 May - 13 May	United
06 May - 09 May	Arajet
10 May - 13 May	United
26 May - 02 Jun	United
27 May - 03 Jun	Arajet
30 May - 06 Jun	United
24 May - 03 Jun	WestJet
28 May - 04 Jun	United
29 May - 07 Jun	Arajet
29 May - 05 Jun	WestJet
25 May - 01 Jun	WestJet
31 May - 07 Jun	WestJet

Also check the deals for one-way flights from Montreal to San Juan 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 Juan in May from 215€

Return flights