The usual round-trip price from Montreal to Kauai is about $1369 CAD, based on all of our scans. The lowest price we have recorded is $834 CAD, which is 39% below the usual price. Departures in October are cheapest on average ($1193 CAD) and departures in December the most expensive ($1582 CAD). Prices are fairly stable on this route: the gap between a cheap date and an expensive one stays small. The usual price to Kauai is higher than that of 95% of the 21 destinations we track in North America from Montreal.
All past deals
1 deals · prices in CAD, round trip| Found | Price | Regular price | Savings | Status |
|---|---|---|---|---|
| October 6, 2026 | $834 | $1390 | −40% | Past |
What is the best month to fly from Montreal to Kauai? Price by departure month
Average round-trip price of each month's departures, all trip lengths, from all of our scans. The difference compares each month to the average of the months shown: a negative difference means cheaper than average.
| Departure month | Average price | Lowest seen | Difference |
|---|---|---|---|
| October 2026 | $1200 | $813 | -14% |
| November 2026 | $1341 | $831 | -4% |
| December 2026 | $1570 | $831 | +13% |
| January 2027 | $1307 | $813 | -6% |
| February 2027 | $1356 | $813 | -3% |
| March 2027 | $1522 | $1042 | +9% |
| April 2027 | $1461 | $1183 | +5% |
Which weekday is cheapest to depart from Montreal to Kauai?
Each price is compared to the average price of its own departure month, which removes the effect of seasons. A negative difference means cheaper than usual that month.
| Departure day | Difference |
|---|---|
| Monday | -5% |
| Tuesday | -7% |
| Wednesday | -4% |
| Thursday | +0% |
| Friday | +6% |
| Saturday | +8% |
| Sunday | +3% |
Departing on a Tuesday is cheapest (-7% versus the usual price for the month) and departing on a Saturday is the most expensive (+8%).
Which trip length is cheapest from Montreal to Kauai?
Trip length changes the price of a flight from Montreal to Kauai very little in our scans: pick the length that suits you.
When to fly from Montreal to Kauai? 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. Green dots: deals we sent (hover for date and price). Black dot: the cheapest day.
Oct 27, 2026 is the cheapest departure date from Montreal to Kauai in our scans: $1116 CAD on average, across all trip lengths and all prices recorded over time.
When to book a flight from Montreal to Kauai? Price by time before departure
Average round-trip price by how many weeks before departure the price was recorded. Read left to right: as departure gets closer, the price moves. Black dot: the cheapest lead time.
This chart is the average of all prices recorded over time, with all departure dates mixed together. It blends cheap and expensive departures (seasons), which is why its lowest point is much higher than the cheapest day in the previous chart. The next chart isolates the effect of when you book.
When to book a flight from Montreal to Kauai? Difference from the normal price
Each recorded price is compared to the average price of its own departure date, which removes the effect of seasons. Read left to right up to departure: below the green line means cheaper than usual for that date. Black dot: the cheapest lead time.
Example: -10% means that at that point, the price is on average 10% below the usual price for the same departure date.
FAQ: flights Montreal → Kauai
Is the best price from Montreal to Kauai really a good deal?
The average price across all of our Montreal → Kauai scans is $1369 CAD. Our best spotted price, $834 CAD, is 39% below that average.
How often are there flight deals from Montreal to Kauai?
We have sent only one deal from Montreal to Kauai since the site launched in April 2026. Subscribe so you do not miss the next one.
When is the cheapest time to fly from Montreal to Kauai?
Based on our daily scans, departures from Montreal to Kauai in October are the cheapest (average $1193 CAD) and departures in December the most expensive ($1582 CAD). The chart above shows the average price day by day for the coming year.
How far in advance should I book a flight from Montreal to Kauai?
Based on our scans, prices for flights from Montreal to Kauai are lowest about 15 weeks before departure (-3% versus the normal price for the same departure date). In the final 2 weeks before departure, the difference is +14%. See the last chart above.
Which weekday is cheapest to depart from Montreal to Kauai?
Departing on a Tuesday is cheapest (-7% versus the usual price for the month) and departing on a Saturday is the most expensive (+8%).
Which trip length is cheapest from Montreal to Kauai?
Trip length changes the price of a flight from Montreal to Kauai very little in our scans: pick the length that suits you.
How long does a deal from Montreal to Kauai 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 Kauai drop?
Subscribe to En Plein Vol for free: we email flight deals from Montreal as soon as they are spotted.
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