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

Return flights

02 Jun - 09 Jun	United
03 Jun - 10 Jun	United
16 Jun - 23 Jun	WestJet
09 Jun - 20 Jun	WestJet
25 Jun - 02 Jul	WestJet
10 Jun - 17 Jun	United
10 Jun - 23 Jun	United
05 Jun - 12 Jun	WestJet
11 Jun - 18 Jun	WestJet
13 Jun - 20 Jun	WestJet
17 Jun - 24 Jun	WestJet
24 Jun - 01 Jul	WestJet
26 Jun - 03 Jul	WestJet
27 Jun - 04 Jul	WestJet
30 Jun - 07 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 $521

Return flights