The usual round-trip price from Montreal to San Juan is about $805 CAD, based on all of our scans. The lowest price we have recorded is $528 CAD, which is 34% below the usual price. Departures in April are cheapest on average ($618 CAD) and departures in December the most expensive ($953 CAD). Prices swing a lot on this route, so waiting for a price drop can pay off. The usual price to San Juan is lower than that of 79% of the 29 destinations we track in Caribbean from Montreal.
No deal sent to San Juan yet
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What is the best month to fly from Montreal to San Juan? Price by departure month
Typical round-trip price of each month's departures, all trip lengths, from all of our past and current scans (every January pooled, and so on). Prices are compared at the same booking lead time. The difference compares each month to the average of the months shown: a negative difference means cheaper than average. These figures firm up as we collect more scans.
| Departure month | Average price | Lowest seen | Difference | |
|---|---|---|---|---|
| January | $795 | $528 | +0% | |
| February | $802 | $528 | +1% | |
| March | $801 | $528 | +0% | |
| April | $787 | $528 | -1% | |
| November | $804 | $588 | +1% | |
| December | $791 | $528 | -1% |
When to fly from Montreal to San Juan? Average price per day
Average round-trip price per departure date, all trip lengths, from all of our scans. Green line: the average price across all of our scans. Black dot: the cheapest day.
Jan 20, 2027 is the cheapest departure date from Montreal to San Juan in our scans: $528 CAD on average, across all trip lengths and all prices recorded over time.
FAQ: flights Montreal → San Juan
Is the best price from Montreal to San Juan really a good deal?
The average price across all of our Montreal → San Juan scans is $805 CAD. Our best spotted price, $528 CAD, is 34% below that average.
When is the cheapest time to fly from Montreal to San Juan?
Based on our daily scans, departures from Montreal to San Juan in April are the cheapest (average $618 CAD) and departures in December the most expensive ($953 CAD). The chart above shows the average price day by day for the coming year.
How long does a deal from Montreal to San Juan last?
Fare deals disappear fast: we treat a deal as active for 48 hours after it is sent. After that the price may have changed.
How do I get alerted when fares from Montreal to San Juan drop?
Subscribe to En Plein Vol for free: we email flight deals from Montreal as soon as they are spotted.