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

Return flights

18 Jun - 25 Jun	WestJet
02 Jun - 09 Jun	WestJet
16 Jun - 23 Jun	WestJet
23 Jun - 30 Jun	WestJet
24 Jun - 01 Jul	WestJet
25 Jun - 02 Jul	WestJet
06 Jun - 13 Jun	WestJet
30 Jun - 07 Jul	WestJet
10 Jun - 17 Jun	WestJet
12 Jun - 19 Jun	WestJet
26 Jun - 03 Jul	WestJet
04 Jun - 11 Jun	WestJet
14 Jun - 21 Jun	WestJet
20 Jun - 27 Jun	WestJet
27 Jun - 04 Jul	WestJet
29 Jun - 06 Jul	WestJet
28 Jun - 05 Jul	WestJet

Also check the deals for one-way flights from Montreal to San Juan in June.

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 June from $583

Return flights