Cheap flights from Montreal to Key Largo from C$ 272
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 22/10. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — MIA
26 Sep — 3 Oct1
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 June or January, booked 49 days in advance, depart on a Sunday or Thursday and return on a Thursday
Cheap flight deals from Montreal to Key Largo
Enter your travel dates to find the best prices.
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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 27 August 2026.
Wed 2/96:30 p.m. -
Nonstop3h 41m
Wed 9/97:55 a.m. -
Nonstop3h 33m
Deal found 26/8C$ 377
Wed 9/96:30 p.m. -
Nonstop3h 47m
Tue 15/97:55 a.m. -
Nonstop3h 33m
Deal found 25/8C$ 380
Mon 31/86:30 p.m. -
Nonstop3h 41m
Wed 9/97:55 a.m. -
Nonstop3h 33m
Deal found 25/8C$ 387
Tue 6/106:30 p.m. -
Nonstop3h 47m
Wed 21/108:15 a.m. -
Nonstop3h 30m
Deal found 24/8C$ 392
Sun 6/91:20 p.m. -
Nonstop3h 41m
Fri 11/97:55 a.m. -
Nonstop3h 33m
Deal found 24/8C$ 397
Mon 7/126:45 a.m. -
1 stop6h 20m
Fri 11/122:05 p.m. -
1 stop8h 15m
Deal found 26/8C$ 398
Mon 19/102:00 p.m. -
1 stop6h 49m
Fri 23/108:15 a.m. -
Nonstop3h 30m
Deal found 25/8C$ 399
Thu 24/96:30 p.m. -
Nonstop3h 47m
Fri 16/108:15 a.m. -
Nonstop3h 30m
Deal found 25/8C$ 402
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 27 August 2026.
Sat 5/92:46 p.m. -
1 stop7h 14m
Sat 12/96:25 p.m. -
1 stop5h 25m
Deal found 26/8C$ 459
Tue 15/99:15 a.m. -
2 stops9h 37m
Sat 26/97:00 a.m. -
1 stop6h 09m
Deal found 23/8C$ 527
Wed 3/26:45 a.m. -
1 stop6h 20m
Fri 12/22:05 p.m. -
1 stop8h 15m
Deal found 25/8C$ 573
Sat 26/92:25 p.m. -
1 stop7h 02m
Tue 29/94:35 p.m. -
1 stop7h 15m
Deal found 22/8C$ 462
Tue 20/107:00 a.m. -
1 stop10h 14m
Wed 4/118:10 a.m. -
1 stop5h 29m
Deal found 23/8C$ 495
Sun 24/13:00 p.m. -
1 stop5h 37m
Wed 3/21:25 p.m. -
1 stop6h 13m
Deal found 22/8C$ 560
Fri 11/92:46 p.m. -
1 stop10h 09m
Fri 18/91:12 p.m. -
1 stop10h 15m
Deal found 26/8C$ 524
Tue 10/116:00 a.m. -
1 stop6h 26m
Sun 22/117:00 a.m. -
1 stop10h 27m
Deal found 24/8C$ 560
Fri 23/107:00 a.m. -
1 stop9h 45m
Sat 7/117:00 a.m. -
1 stop6h 38m
Deal found 23/8C$ 560
Sat 6/29:28 a.m. -
1 stop9h 45m
Sat 13/28:05 a.m. -
1 stop8h 58m
Deal found 26/8C$ 574
Fri 29/112:45 p.m. -
1 stop10h 00m
Sun 7/28:00 a.m. -
1 stop7h 59m
Deal found 23/8C$ 594
Tue 10/116:35 p.m. -
1 stop6h 22m
Mon 16/117:20 p.m. -
1 stop13h 24m
Deal found 25/8C$ 600
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 27 August 2026.
Wed 23/96:30 p.m. -
Nonstop3h 47m
Wed 30/97:55 a.m. -
Nonstop3h 33m
Deal found 26/8C$ 377
Wed 9/96:30 p.m. -
Nonstop3h 47m
Tue 15/97:55 a.m. -
Nonstop3h 33m
Deal found 25/8C$ 380
Tue 6/106:30 p.m. -
Nonstop3h 47m
Wed 21/108:15 a.m. -
Nonstop3h 30m
Deal found 24/8C$ 392
Sun 6/91:20 p.m. -
Nonstop3h 41m
Fri 11/97:55 a.m. -
Nonstop3h 33m
Deal found 24/8C$ 397
Thu 24/96:30 p.m. -
Nonstop3h 47m
Fri 16/108:15 a.m. -
Nonstop3h 30m
Deal found 25/8C$ 402
Wed 7/106:30 p.m. -
Nonstop3h 47m
Tue 13/108:15 a.m. -
Nonstop3h 30m
Deal found 25/8C$ 410
Tue 6/106:30 p.m. -
Nonstop3h 47m
Fri 9/108:15 a.m. -
Nonstop3h 30m
Deal found 26/8C$ 413
Sun 6/91:20 p.m. -
Nonstop3h 41m
Mon 5/107:55 a.m. -
Nonstop3h 33m
Deal found 26/8C$ 416
Last-minute flights from Montreal to Key Largo
Discover last-minute flight deals from Montreal to Key Largo. Data last updated 27 August 2026 and is based on user searches.
Mon 31/86:30 p.m. -
Nonstop3h 41m
Wed 9/97:55 a.m. -
Nonstop3h 33m
Deal found 25/8C$ 387
Wed 2/96:30 p.m. -
Nonstop3h 41m
Wed 9/97:55 a.m. -
Nonstop3h 33m
Deal found 26/8C$ 377
Sun 6/91:20 p.m. -
Nonstop3h 41m
Fri 11/97:55 a.m. -
Nonstop3h 33m
Deal found 24/8C$ 397
Wed 9/96:30 p.m. -
Nonstop3h 47m
Tue 15/97:55 a.m. -
Nonstop3h 33m
Deal found 25/8C$ 380
Thu 24/96:30 p.m. -
Nonstop3h 47m
Fri 16/108:15 a.m. -
Nonstop3h 30m
Deal found 25/8C$ 402
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 27 August 2026.
Thu 22/1012:44 p.m. -
1 stop9h 57m
Deal found 25/8C$ 272
Thu 10/96:30 p.m. -
Nonstop3h 47m
Deal found 25/8C$ 273
Thu 3/96:00 a.m. -
1 stop6h 13m
Deal found 26/8C$ 275
Mon 31/89:45 a.m. -
2 stops11h 03m
Deal found 23/8C$ 276
Tue 24/117:00 a.m. -
1 stop10h 20m
Deal found 25/8C$ 277
Fri 4/94:15 p.m. -
1 stop6h 53m
Deal found 24/8C$ 279
Sat 5/96:30 p.m. -
Nonstop3h 41m
Deal found 26/8C$ 282
Fri 18/96:30 p.m. -
Nonstop3h 47m
Deal found 22/8C$ 283
Tue 1/97:55 a.m. -
2 stops7h 45m
Deal found 26/8C$ 284
Sat 24/102:30 p.m. -
1 stop6h 19m
Deal found 24/8C$ 286
Fri 4/96:30 p.m. -
Nonstop3h 41m
Deal found 23/8C$ 287
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 27 August 2026.
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 7,457,451 searches. Data last updated 27 August 2026.
Use the filters below to find and compare flights from Montreal to Key Largo that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest round-trip
MontrealMiami
YUL Montreal Pierre Elliott Trudeau Intl - MIA Miami
YULMIA
Montreal Pierre Elliott Trudeau Intl
Sat 5/9
2:46 p.m.-10:00 p.m.
1 stop7h 14m
Miami
Sat 12/9
6:25 p.m.-11:50 p.m.
1 stop5h 25m
C$ 459
MontrealMiami
YUL Montreal Pierre Elliott Trudeau Intl - MIA Miami
YULMIA
Montreal Pierre Elliott Trudeau Intl
Sat 26/9
2:25 p.m.-9:27 p.m.
1 stop7h 02m
Miami
Tue 29/9
4:35 p.m.-11:50 p.m.
1 stop7h 15m
C$ 462
MontrealMiami
YUL Montreal Pierre Elliott Trudeau Intl - MIA Miami
YULMIA
Montreal Pierre Elliott Trudeau Intl
Tue 20/10
7:00 a.m.-5:14 p.m.
1 stop10h 14m
Miami
Wed 4/11
8:10 a.m.-1:39 p.m.
1 stop5h 29m
C$ 495
MontrealMiami
YUL Montreal Pierre Elliott Trudeau Intl - MIA Miami
YULMIA
Montreal Pierre Elliott Trudeau Intl
Fri 11/9
2:46 p.m.-12:55 a.m.
1 stop10h 09m
Miami
Fri 18/9
1:12 p.m.-11:27 p.m.
1 stop10h 15m
C$ 524
MontrealMiami
YUL Montreal Pierre Elliott Trudeau Intl - MIA Miami
YULMIA
Montreal Pierre Elliott Trudeau Intl
Tue 15/9
9:15 a.m.-6:52 p.m.
2 stops9h 37m
Miami
Sat 26/9
7:00 a.m.-1:09 p.m.
1 stop6h 09m
C$ 527
Quickest round-trip
MontrealMiami
YUL Montreal Pierre Elliott Trudeau Intl - MIA Miami
YULMIA
Montreal Pierre Elliott Trudeau Intl
Sun 24/1
3:00 p.m.-8:37 p.m.
1 stop5h 37m
Miami
Wed 3/2
1:25 p.m.-7:38 p.m.
1 stop6h 13m
C$ 560
MontrealMiami
YUL Montreal Pierre Elliott Trudeau Intl - MIA Miami
YULMIA
Montreal Pierre Elliott Trudeau Intl
Tue 10/11
6:00 a.m.-12:26 p.m.
1 stop6h 26m
Miami
Sun 22/11
7:00 a.m.-5:27 p.m.
1 stop10h 27m
C$ 560
MontrealMiami
YUL Montreal Pierre Elliott Trudeau Intl - MIA Miami
YULMIA
Montreal Pierre Elliott Trudeau Intl
Fri 23/10
7:00 a.m.-4:45 p.m.
1 stop9h 45m
Miami
Sat 7/11
7:00 a.m.-1:38 p.m.
1 stop6h 38m
C$ 560
MontrealMiami
YUL Montreal Pierre Elliott Trudeau Intl - MIA Miami
YULMIA
Montreal Pierre Elliott Trudeau Intl
Wed 3/2
6:45 a.m.-1:05 p.m.
1 stop6h 20m
Miami
Fri 12/2
2:05 p.m.-10:20 p.m.
1 stop8h 15m
C$ 573
MontrealMiami
YUL Montreal Pierre Elliott Trudeau Intl - MIA Miami
YULMIA
Montreal Pierre Elliott Trudeau Intl
Sat 6/2
9:28 a.m.-7:13 p.m.
1 stop9h 45m
Miami
Sat 13/2
8:05 a.m.-5:03 p.m.
1 stop8h 58m
C$ 574
Flights are sorted by cheapest round-trip flights first.
Deals found on 25/8
Showing 1-10 of 22 resultsSorted by cheapest first
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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.
YUL-MIA
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
YMQ-KE9
YUL-MIA
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 27 August 2026.
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 afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 26% on airfare.
How much does it cost to fly round-trip from Montreal to Key Largo?
Airfare is below average for this route at the moment.
Montreal to Key Largo flights typically cost between C$ 480 and C$ 659 in September.The cheapest round-trip price found within the last 5 days was C$ 377 on Air Canada (23 Sep-30 Sep).
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 22 August 2026.
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. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
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 27 August 2026.
Check out reviews from past customers who have flown with Porter Airlines,Delta, andWestJet 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.
My first flight with an all female flight crew who were the best ever.
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 7h 14m. Delta provides one of the quickest options available for as low as C$ 459. 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 Porter Airlines. According to our data, you can fly for as low as C$ 181. Users have also found prices from C$ 232 and C$ 252 on Delta 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: Qatar Airways (96%), American Airlines (93%), Porter Airlines (93%).
What are the cheapest flights from Montreal to Key Largo?
While on average a flight from Montreal to Key Largo is generally C$ 1,422, our data shows the cheapest flight currently is C$ 262. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Miami), you can expect to pay C$ 417 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.
Discover the top 7 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 7,457,451 searches. Data last updated 27 August 2026.
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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