Cheapest return flights from Montreal to San Juan in September from 344€

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
16 Sep - 23 Sep United
23 Sep - 30 Sep United
30 Sep - 07 Oct United
22 Sep - 29 Sep United
20 Sep - 27 Sep United
02 Sep - 09 Sep United
12 Sep - 19 Sep United
17 Sep - 24 Sep United
03 Sep - 10 Sep WestJet
05 Sep - 12 Sep WestJet
13 Sep - 20 Sep WestJet
25 Sep - 02 Oct WestJet
29 Sep - 06 Oct WestJet
26 Sep - 03 Oct WestJet
17 Sep - 02 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.

Book a cheap hotel in San Juan

Cheap car rent in San Juan