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

Return flights

09 Jul - 16 Jul	WestJet
23 Jul - 30 Jul	WestJet
28 Jul - 04 Aug	WestJet
20 Jul - 27 Jul	WestJet
08 Jul - 15 Jul	WestJet
10 Jul - 17 Jul	WestJet
14 Jul - 21 Jul	WestJet
16 Jul - 23 Jul	WestJet
18 Jul - 25 Jul	WestJet
22 Jul - 29 Jul	WestJet
25 Jul - 01 Aug	WestJet
02 Jul - 09 Jul	WestJet
27 Jul - 03 Aug	WestJet
26 Jul - 02 Aug	WestJet
29 Jul - 05 Aug	United
30 Jul - 06 Aug	United

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

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 July from $593

Return flights