$140+ Cheap flights from Key Largo, FL to Montreal (YMQ)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/8. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Key Largo to Montreal with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Key Largo to Montreal are usually found in January or February, booked 53 days in advance, depart on a Thursday or Friday and return on a Sunday
Cheap flight deals from Key Largo to Montreal
Cheapest flights from Key Largo to MontrealExplore the most affordable flight options available from Key Largo to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.
Explore the most affordable flight options available from Key Largo to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.
This Air Canada deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Air Canada deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 12/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 12/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flight deals from Key Largo to Montreal
Keep the following information in mind while searching for Key Largo to Montreal flight deals. Data was last updated December 18, 2025.
Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $309 (Kiwi.com) |
One-way from | $140 (Kiwi.com) |
Popular in | December |
Cheapest in | January |
Average price | $498 |
Cheapflights Fare Finder
Use the filters below to find and compare flights from Key Largo to Montreal that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
MiamiMontreal
MIA - YUL
MIAYUL
Miami
Tue 1/20
2:10 pm-8:55 pm
1 stop6h 45m
Montreal Pierre Elliott Trudeau Intl
Thu 1/22
6:45 am-1:09 pm
1 stop6h 24m
MiamiMontreal
MIA - YUL
MIAYUL
Miami
Tue 2/3
11:47 am-9:05 pm
2 stops9h 18m
Montreal Pierre Elliott Trudeau Intl
Thu 2/5
6:45 am-1:09 pm
1 stop6h 24m
MiamiMontreal
MIA - YUL
MIAYUL
Miami
Tue 1/20
2:10 pm-8:55 pm
1 stop6h 45m
Montreal Pierre Elliott Trudeau Intl
Sat 1/24
10:15 am-11:16 pm
2 stops13h 01m
MiamiMontreal
MIA - YUL
MIAYUL
Miami
Tue 1/20
2:10 pm-8:55 pm
1 stop6h 45m
Montreal Pierre Elliott Trudeau Intl
Wed 1/21
6:45 am-1:09 pm
1 stop6h 24m
MiamiMontreal
MIA - YUL
MIAYUL
Miami
Thu 3/5
2:10 pm-8:55 pm
1 stop6h 45m
Montreal Pierre Elliott Trudeau Intl
Mon 3/9
6:45 am-1:09 pm
1 stop6h 24m
MiamiMontreal
MIA - YUL
MIAYUL
Miami
Fri 3/20
6:15 pm-9:54 pm
Nonstop3h 39m
Montreal Pierre Elliott Trudeau Intl
Wed 3/25
7:40 am-11:39 am
Nonstop3h 59m
MiamiMontreal
MIA - YUL
MIAYUL
Miami
Thu 3/5
12:25 pm-4:04 pm
Nonstop3h 39m
Montreal Pierre Elliott Trudeau Intl
Mon 3/9
1:30 pm-5:29 pm
Nonstop3h 59m
MiamiMontreal
MIA - YUL
MIAYUL
Miami
Thu 1/15
2:01 pm-12:43 am
3 stops34h 42m
Montreal Pierre Elliott Trudeau Intl
Mon 1/19
8:00 am-11:56 am
2 stops27h 56m
MiamiMontreal
MIA - YUL
MIAYUL
Miami
Sat 1/24
9:24 am-1:22 pm
1 stop27h 58m
Montreal Pierre Elliott Trudeau Intl
Mon 2/2
9:34 am-9:10 pm
1 stop11h 36m
MiamiMontreal
MIA - YUL
MIAYUL
Miami
Tue 4/28
9:50 am-4:10 pm
1 stop6h 20m
Montreal Pierre Elliott Trudeau Intl
Tue 4/28
6:30 pm-11:20 am
1 stop16h 50m
Best time to book a flight from Key Largo to Montreal
Have a flexible travel schedule? Discover the best time to fly to Montreal from Key Largo with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Key Largo to Montreal
How far ahead should I book a flight from Key Largo to Montreal?
Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Montreal. Price data was last updated on December 12, 2025.
The price you pay for your flight from Key Largo to Montreal may vary depending on when you book. For the best chance of a lower fare, look to book 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Key Largo to Montreal?
Currently, April is the cheapest month in which you can book a flight from Key Largo to Montreal (average of $39). Flying from Key Largo to Montreal in July is currently the most expensive (average of $118). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from KE9 to YMQ?
Find hourly flight availability from Key Largo to Montreal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.
It’s optimal to fly from Key Largo to Montreal in the afternoon. By choosing this option you can save up to 50% on the cost of your flight, compared to a flight in the morning.
What is the cheapest day to fly from Key Largo to Montreal?
Use this chart to determine the cheapest time to fly round-trip from Key Largo to Montreal. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Key Largo to Montreal flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Key Largo to Montreal
Explore weekly flight availability from Key Largo to Montreal. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 18, 2025.
The most flights from KE9 to YMQ are scheduled on a Monday (4 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (2 on average).
Reviews of airlines servicing Montreal
Get insights into the airlines that provide service to Montreal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Montreal. Reviews last updated December 18, 2025.
Read reviews from past customers who have flown Porter Airlines, Delta, and American Airlines from Key Largo to Montreal. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Entertainment
Comfort
Boarding
Crew
Overall
Reviews
Mohameed,Nov 2025
LAS - YYZ
Food
Entertainment
Comfort
Boarding
Crew
Overall
Reviews
Mohameed,Nov 2025
LAS - YYZ
Food
Entertainment
Comfort
Boarding
Crew
Overall
Reviews
Mohameed,Nov 2025
LAS - YYZ
Food
Entertainment
Comfort
Boarding
Crew
Overall
Reviews
Mohameed,Nov 2025
LAS - YYZ
Food
Entertainment
Comfort
Boarding
Crew
Overall
Reviews
Mohameed,Nov 2025
LAS - YYZ
Food
Entertainment
Comfort
Boarding
Crew
Overall
Reviews
Mohameed,Nov 2025
LAS - YYZ
Related info for your journey
Find useful and relevant information for your journey from Key Largo to Montreal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Key Largo to Montreal
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from Key Largo to Montreal
Discover the top 8 airlines that operate flights from Key Largo to Montreal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$32 | Average$208 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$68 | Average$313 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$81 | Average$216 | FlexibilityNo cancel fee | On-time52% | |
| Cheapest$96 | Average$287 | FlexibilityNo cancel fee | On-time50% | |
| Cheapest$101 | Average$369 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$120 | Average$292 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$131 | Average$356 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$212 | Average$396 | FlexibilityNo cancel fee | On-time71% |