AirHint found the following cheapest one-way flights from Montreal (YUL) to San Juan (SJU) in December 2025 (see full year).
One-Way flights
| 11 Dec | United | ||
| 31 Dec | United | ||
| 14 Dec | United | ||
| 28 Dec | Air Canada | ||
| 21 Dec | Porter Airlines (Canada) Ltd | ||
| 21 Dec | Air Transat | direct | |
| 25 Dec | WestJet | ||
| 14 Dec | Air Canada | direct |
Also check the deals for return flights from Montreal to San Juan in December.
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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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