Cheapest return flights from Montreal to San Juan in October from $348

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 October 2025 (see full year).

Return flights

01 Oct - 08 Oct United
07 Oct - 14 Oct United
21 Oct - 28 Oct United
15 Oct - 22 Oct United
24 Oct - 01 Nov United
17 Oct - 24 Oct United
22 Oct - 29 Oct United
10 Oct - 17 Oct WestJet
20 Oct - 27 Oct WestJet
24 Oct - 31 Oct WestJet
03 Oct - 10 Oct WestJet
25 Oct - 01 Nov WestJet
27 Oct - 03 Nov WestJet
29 Oct - 05 Nov WestJet
26 Oct - 02 Nov WestJet

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

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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