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
01 Jun - 08 Jun	United
10 Jun - 17 Jun	United
03 Jun - 10 Jun	United
09 Jun - 16 Jun	United
11 Jun - 18 Jun	United
07 Jun - 14 Jun	United
02 Jun - 12 Jun	WestJet
30 Jun - 07 Jul	United
06 Jun - 13 Jun	WestJet
05 Jun - 12 Jun	WestJet
24 Jun - 01 Jul	WestJet
23 Jun - 08 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 $439

Return flights