Cheapest return flights from Montreal to San Juan in September from $245

Best time to book flights for Montreal (YUL) to San Juan (SJU) flights at AirHint

AirHint found the following cheapest return flights from Montreal (YUL) to San Juan (SJU) in September 2025 (see full year).

Return flights

24 Sep - 01 Oct United
23 Sep - 30 Sep United
22 Sep - 30 Sep United
17 Sep - 02 Oct American Airlines
06 Sep - 13 Sep United
19 Sep - 26 Sep United
13 Sep - 20 Sep United
27 Sep - 04 Oct United
04 Sep - 11 Sep WestJet
11 Sep - 18 Sep WestJet
17 Sep - 24 Sep WestJet
25 Sep - 02 Oct WestJet
02 Sep - 09 Sep WestJet
08 Sep - 15 Sep WestJet
28 Sep - 05 Oct WestJet

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

Skyscanner

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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