Cheap flights from Montreal to Key Largo from C$ 246
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 23/1. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — MIA
30 Jan — 6 Feb1
Round-trip
1 adult
Economy
Round-trip
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal to Key Largo are usually found in April or June, booked 47 days in advance, depart on a Thursday or Tuesday and return on a Saturday
Cheap flight deals from Montreal to Key Largo
Enter your travel dates to find the best prices.
Cheapest flights from Montreal to Key Largo
Explore the most affordable flight options available from Montreal to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 December 2025.
Wed 31/124:10 p.m.YUL - MIA
1 stop8h 06mAir Canada
Fri 16/17:25 a.m.MIA - YUL
1 stop6h 57mAir Canada
Deal found 29/12C$ 398
Wed 31/124:10 p.m.YUL - MIA
1 stop8h 06mAir Canada
Wed 7/17:25 a.m.MIA - YUL
2 stops8h 15mAir Canada
Deal found 29/12C$ 444
Wed 31/124:10 p.m.YUL - MIA
1 stop8h 06mAir Canada
Thu 1/17:25 a.m.MIA - YUL
1 stop6h 57mAir Canada
Deal found 29/12C$ 463
Wed 31/125:10 p.m.YUL - MIA
1 stop7h 06mAir Canada
Mon 12/14:20 p.m.MIA - YUL
1 stop7h 02mAir Canada
Deal found 29/12C$ 476
Wed 31/125:10 p.m.YUL - MIA
1 stop7h 06mAir Canada
Tue 6/19:05 p.m.MIA - YUL
1 stop13h 18mAir Canada
Deal found 30/12C$ 526
Tue 30/128:10 p.m.YUL - MIA
1 stop15h 15mAir Canada
Mon 12/19:05 p.m.MIA - YUL
1 stop12h 17mAir Canada
Deal found 29/12C$ 530
Wed 31/125:10 p.m.YUL - MIA
1 stop7h 06mAir Canada
Sat 10/111:35 a.m.MIA - YUL
1 stop6h 48mAir Canada
Deal found 29/12C$ 541
Tue 30/123:59 p.m.YUL - MIA
1 stop7h 05mAmerican Airlines
Wed 31/1212:03 p.m.MIA - YUL
2 stops10h 36mAmerican Airlines
Deal found 29/12C$ 544
Best flights from Montreal to Key Largo
Discover carefully curated flight deals from Montreal to Key Largo that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 31 December 2025.
Thu 22/14:10 p.m.YUL - MIA
1 stop8h 06mAir Canada
Tue 27/18:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 30/12C$ 367
Wed 18/27:00 a.m.YUL - MIA
1 stop11h 21mDelta
Wed 4/37:40 a.m.MIA - YUL
2 stops16h 05mDelta
Deal found 28/12C$ 423
Wed 27/56:00 a.m.YUL - MIA
1 stop5h 47mUnited Airlines
Tue 2/68:00 a.m.MIA - YUL
1 stop8h 21mUnited Airlines
Deal found 30/12C$ 428
Wed 18/27:00 a.m.YUL - MIA
1 stop11h 21mDelta
Fri 6/37:59 p.m.MIA - YUL
1 stop12h 43mDelta
Deal found 28/12C$ 423
Fri 9/13:00 p.m.YUL - MIA
1 stop8h 59mUnited Airlines
Sat 17/17:15 a.m.MIA - YUL
1 stop6h 13mUnited Airlines
Deal found 28/12C$ 448
Sat 10/12:45 p.m.YUL - MIA
1 stop10h 06mDelta
Fri 16/11:21 p.m.MIA - YUL
1 stop10h 29mDelta
Deal found 28/12C$ 428
Sat 24/16:00 a.m.YUL - MIA
2 stops16h 20mUnited Airlines
Sat 31/17:15 a.m.MIA - YUL
1 stop6h 13mUnited Airlines
Deal found 28/12C$ 450
Fri 9/12:15 p.m.YUL - MIA
1 stop9h 05mDelta
Fri 16/14:32 p.m.MIA - YUL
1 stop7h 18mDelta
Deal found 30/12C$ 428
Mon 2/36:00 p.m.YUL - MIA
1 stop6h 53mDelta
Fri 6/37:59 p.m.MIA - YUL
1 stop12h 43mDelta
Deal found 28/12C$ 437
Thu 29/16:02 p.m.YUL - MIA
1 stop6h 49mDelta
Wed 4/23:25 p.m.MIA - YUL
1 stop8h 25mDelta
Deal found 28/12C$ 444
Sat 2/59:30 a.m.YUL - MIA
1 stop9h 21mDelta
Mon 11/53:35 p.m.MIA - YUL
1 stop8h 23mDelta
Deal found 28/12C$ 463
Direct flights from Montreal to Key Largo
Explore direct flight options from Montreal to Key Largo based on user searches, and compare prices and availability for your desired travel dates. Data last updated 31 December 2025.
Thu 12/37:40 a.m.YUL - MIA
Nonstop3h 59mAir Canada
Thu 19/312:25 p.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 29/12C$ 359
Thu 22/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Sat 24/18:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 29/12C$ 363
Thu 29/17:40 a.m.YUL - MIA
Nonstop3h 59mAir Canada
Mon 2/26:15 p.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 30/12C$ 364
Mon 12/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Thu 22/18:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 30/12C$ 367
Fri 20/36:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Mon 23/36:15 p.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 30/12C$ 372
Sat 14/36:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Thu 26/36:15 p.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 30/12C$ 374
Sat 21/26:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Fri 27/28:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 28/12C$ 375
Sat 24/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Mon 26/112:25 p.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 29/12C$ 381
Sat 31/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Sat 7/28:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 30/12C$ 382
Sun 11/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Fri 23/18:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 30/12C$ 392
Wed 28/17:40 a.m.YUL - MIA
Nonstop3h 59mAir Canada
Sun 1/28:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 28/12C$ 393
Last-minute flights from Montreal to Key Largo
Discover last-minute flight deals from Montreal to Key Largo. Data last updated 31 December 2025 and is based on user searches.
Wed 7/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Wed 14/18:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 29/12C$ 366
Mon 12/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Thu 22/18:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 30/12C$ 367
Thu 15/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Thu 22/17:25 a.m.MIA - YUL
1 stop6h 57mAir Canada
Deal found 28/12C$ 368
Thu 15/18:50 a.m.YUL - MIA
2 stops11h 30mAir Canada
Wed 21/112:20 p.m.MIA - YUL
2 stops8h 25mAir Canada
Deal found 30/12C$ 371
Mon 19/11:15 p.m.YUL - MIA
2 stops11h 01mAir Canada
Sun 25/18:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 29/12C$ 364
Thu 22/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Tue 27/112:25 p.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 30/12C$ 359
Thu 22/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Sun 25/18:00 a.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 29/12C$ 363
Fri 23/12:25 p.m.YUL - MIA
1 stop7h 57mAmerican Airlines
Sun 1/26:40 a.m.MIA - YUL
1 stop8h 40mAmerican Airlines
Deal found 30/12C$ 357
Fri 23/15:10 p.m.YUL - MIA
1 stop7h 06mAir Canada
Tue 24/24:20 p.m.MIA - YUL
1 stop7h 02mAir Canada
Deal found 29/12C$ 374
Mon 26/17:00 a.m.YUL - MIA
1 stop8h 21mAir Canada
Wed 28/14:20 p.m.MIA - YUL
1 stop6h 32mAir Canada
Deal found 29/12C$ 356
Wed 28/16:30 p.m.YUL - MIA
Nonstop3h 59mAir Canada
Mon 2/212:25 p.m.MIA - YUL
Nonstop3h 39mAir Canada
Deal found 30/12C$ 375
One-way flights from Montreal to Key Largo
Search for one-way flight options from Montreal to Key Largo. Find affordable one-way fares based on user searches. Data last updated 31 December 2025.
Fri 23/110:15 a.m.YUL - MIA
2 stops28h 06mMultiple Airlines
Deal found 30/12C$ 246
Tue 27/18:50 a.m.YUL - MIA
2 stops11h 30mAir Canada
Deal found 30/12C$ 248
Thu 29/112:59 p.m.YUL - MIA
1 stop19h 11mAmerican Airlines
Deal found 28/12C$ 249
Sun 29/39:30 p.m.YUL - MIA
2 stops13h 48mAir Canada
Deal found 30/12C$ 251
Sat 24/15:10 p.m.YUL - MIA
1 stop7h 06mAir Canada
Deal found 30/12C$ 252
Sun 11/17:40 a.m.YUL - MIA
Nonstop3h 59mAir Canada
Deal found 30/12C$ 253
Thu 22/11:40 p.m.YUL - MIA
3 stops21h 19mMultiple Airlines
Deal found 30/12C$ 255
Wed 21/12:00 p.m.YUL - MIA
3 stops21h 56mMultiple Airlines
Deal found 30/12C$ 257
Mon 12/18:00 a.m.YUL - MIA
2 stops16h 46mMultiple Airlines
Deal found 29/12C$ 259
Sun 22/25:25 p.m.YUL - MIA
3 stops18h 51mMultiple Airlines
Deal found 29/12C$ 260
Fri 30/11:40 p.m.YUL - MIA
3 stops21h 19mMultiple Airlines
Deal found 30/12C$ 261
Find flight deals from Montreal to Key Largo
Keep the following information in mind while searching for Montreal to Key Largo flight deals. Data was last updated 31 December 2025.
Customize your flight search to find flights from Montreal to Key Largo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 31 December 2025.
Use the filters below to find and compare flights from Montreal to Key Largo that are best for you.
Fly from
Montreal
Fly to
Key Largo
Route
Depart
Return
Price
MontrealMiami
YUL - MIA
YULMIA
Montreal Pierre Elliott Trudeau Intl
Thu 22/1
4:10 p.m.-12:16 a.m.
1 stop8h 06m
Miami
Tue 27/1
8:00 a.m.-11:39 a.m.
Nonstop3h 39m
C$ 367
MontrealMiami
YUL - MIA
YULMIA
Montreal Pierre Elliott Trudeau Intl
Wed 18/2
7:00 a.m.-6:21 p.m.
1 stop11h 21m
Miami
Wed 4/3
7:40 a.m.-11:45 p.m.
2 stops16h 05m
C$ 423
MontrealMiami
YUL - MIA
YULMIA
Montreal Pierre Elliott Trudeau Intl
Wed 18/2
7:00 a.m.-6:21 p.m.
1 stop11h 21m
Miami
Fri 6/3
7:59 p.m.-8:42 a.m.
1 stop12h 43m
C$ 423
MontrealMiami
YUL - MIA
YULMIA
Montreal Pierre Elliott Trudeau Intl
Wed 27/5
6:00 a.m.-11:47 a.m.
1 stop5h 47m
Miami
Tue 2/6
8:00 a.m.-4:21 p.m.
1 stop8h 21m
C$ 428
MontrealMiami
YUL - MIA
YULMIA
Montreal Pierre Elliott Trudeau Intl
Sat 10/1
2:45 p.m.-12:51 a.m.
1 stop10h 06m
Miami
Fri 16/1
1:21 p.m.-11:50 p.m.
1 stop10h 29m
C$ 428
MontrealMiami
YUL - MIA
YULMIA
Montreal Pierre Elliott Trudeau Intl
Fri 9/1
2:15 p.m.-11:20 p.m.
1 stop9h 05m
Miami
Fri 16/1
4:32 p.m.-11:50 p.m.
1 stop7h 18m
C$ 428
MontrealMiami
YUL - MIA
YULMIA
Montreal Pierre Elliott Trudeau Intl
Mon 2/3
6:00 p.m.-12:53 a.m.
1 stop6h 53m
Miami
Fri 6/3
7:59 p.m.-8:42 a.m.
1 stop12h 43m
C$ 437
MontrealMiami
YUL - MIA
YULMIA
Montreal Pierre Elliott Trudeau Intl
Thu 29/1
6:02 p.m.-12:51 a.m.
1 stop6h 49m
Miami
Wed 4/2
3:25 p.m.-11:50 p.m.
1 stop8h 25m
C$ 444
MontrealMiami
YUL - MIA
YULMIA
Montreal Pierre Elliott Trudeau Intl
Fri 9/1
3:00 p.m.-11:59 p.m.
1 stop8h 59m
Miami
Sat 17/1
7:15 a.m.-1:28 p.m.
1 stop6h 13m
C$ 448
MontrealMiami
YUL - MIA
YULMIA
Montreal Pierre Elliott Trudeau Intl
Sat 24/1
6:00 a.m.-10:20 p.m.
2 stops16h 20m
Miami
Sat 31/1
7:15 a.m.-1:28 p.m.
1 stop6h 13m
C$ 450
Flights are sorted by cheapest round-trip flights first.
Deals found on 28/12
Showing 1-10 of 23 results
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Best time to book a flight from Montreal to Key Largo
Have a flexible travel schedule? Discover the best time to fly to Key Largo from Montreal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Montreal to Key Largo
How far ahead should I book a flight from Montreal to Key Largo?
Use this chart to determine the optimal time to book a round-trip flight from Montreal to Key Largo. Price data was last updated on 26 December 2025.
Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from Montreal to Key Largo. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Montreal to Key Largo?
Currently, March is the cheapest month in which you can book a flight from Montreal to Key Largo (average of C$ 115). Flying from Montreal to Key Largo in July is currently the most expensive (average of C$ 194). 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 YMQ to KE9?
Find hourly flight availability from Montreal to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 December 2025.
One of the essential ways to save on airfare from Montreal to Key Largo is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 31% on airfare.
What is the cheapest day to fly from Montreal to Key Largo?
Use this chart to determine the cheapest time to fly round-trip from Montreal to Key Largo. Price data was last updated on 27 December 2025.
Travelers seeking maximum savings on their Montreal to Key Largo flight should consider departing on Monday evenings when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Montreal to Key Largo
Explore weekly flight availability from Montreal to Key Largo. 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 31 December 2025.
The most flights from YMQ to KE9 are scheduled on a Monday (4 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Montreal to Key Largo?
Reviews of airlines servicing Key Largo
Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated 31 December 2025.
Check out reviews from past customers who have flown with Porter Airlines,United Airlines, andAmerican Airlines from Montreal to Key Largo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
It's good. Planes are new and fresh. WiFi is best and stands out
Related info for your journey
Find useful and relevant information for your journey from Montreal to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
How long is the flight from Montreal to Key Largo?
A quick flight from Montreal to Key Largo can take about 5h 47m. Air Canada provides one of the quickest options available for as low as C$ 428. The distance between Montreal and Key Largo is about 2261 km. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Montreal to Key Largo one-way?
For one-way options, check prices for Air Transat. According to our data, you can fly for as low as C$ 144. Users have also found prices from C$ 152 and C$ 211 on Porter Airlines and Air Canada, respectively.
What are the most reliable airlines from Montreal to Key Largo?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Montreal to Key Largo on time: Avion Express (100%), Air Canada Rouge (95%), Air Canada (79%).
What are the cheapest flights from Montreal to Key Largo?
While on average a flight from Montreal to Key Largo is generally C$ 531, our data shows the cheapest flight currently is C$ 245. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Miami), you can expect to pay C$ 304 for that flight.
Can I find deals for business class flights from Montreal to Key Largo?
Yes. Cheapflights offers flight deals from Montreal to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Montreal to Key Largo?
Currently, March is the cheapest month in which you can book a flight from Montreal to Key Largo (average of C$ 115). Flying from Montreal to Key Largo in July is currently the most expensive (average of C$ 194). 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.
Browse through other flights departing from Montreal. Flights are based on user searches made on Cheapflights and were last updated on 31 December 2025.
Discover the top 8 airlines that operate flights from Montreal to Key Largo. 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 629,999 searches. Data last updated 31 December 2025.
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Montreal to Key Largo?
Cheapflights makes it easy to find Montreal to Key Largo flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from Montreal to Key Largo?
Millions of users choose and trust Cheapflights to book the best flight deals from Montreal to Key Largo for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Montreal to Key Largo with no change fees?
Yes! Cheapflights helps users easily find flights from Montreal to Key Largo with no change fees.
Can Cheapflights notify me if prices for flights from Montreal to Key Largo become cheaper?
Yes! Start tracking prices for Montreal to Key Largo flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.
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