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$134+ 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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — YMQ
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Montreal are usually found in October or February, booked 24 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap 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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$308
(Flightnetwork)

One-way from

$134
(Air Canada)

Popular in

December

Cheapest in

October

Average price

$332
Provider with most accurate pricing for Miami-Montreal (YMQ) flight deals.
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Provider most trusted by Cheapflights users for Miami-Montreal (YMQ) flights.
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From Key Largo to Montreal (YMQ)
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One-way flight from Key Largo to Montreal (YMQ)
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Highest demand for flights based on searches. 7% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Key Largo to Montreal

Cheapest flights from Key Largo to Montreal
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 May 1, 2025.

This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/1011:55 amMIA - YUL
1 stop6h 26mAir Canada
Sun 6/159:30 amYUL - MIA
Nonstop3h 48mAir Canada
Deal found 4/30$320
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/297:00 amMIA - YUL
2 stops9h 00mMultiple Airlines
Sun 6/16:35 pmYUL - MIA
1 stop21h 07mMultiple Airlines
Deal found 4/30$329
This Delta deal was found by Cheapflights users on 4/30. 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.
Wed 5/145:59 pmMIA - YUL
1 stop5h 55mDelta
Tue 5/206:00 amYUL - MIA
1 stop5h 52mDelta
Deal found 4/30$341
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/26:00 amMIA - YUL
1 stop7h 44mAmerican Airlines
Mon 6/25:35 pmYUL - MIA
1 stop16h 25mAmerican Airlines
Deal found 4/30$356
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 5/96:25 amMIA - YUL
1 stop8h 29mUnited Airlines
Mon 5/196:15 amYUL - MIA
1 stop8h 41mUnited Airlines
Deal found 4/30$378
This Priceline deal was found by Cheapflights users on 4/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/222:26 pmMIA - YUL
1 stop9h 28mWestJet
Mon 5/266:15 amYUL - MIA
1 stop7h 28mWestJet
Deal found 4/30$427

Cheapflights Fare Finder

Customize your flight search to find flights from Key Largo to Montreal 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 2,558,603 searches. Data last updated May 1, 2025.
Use the filters below to find and compare flights from Key Largo to Montreal that are best for you.

Fly from

Key Largo

Fly to

Montreal

Route

Depart

Return

Price

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Tue 6/10

11:55 am-6:21 pm

1 stop6h 26m

Montreal Pierre Elliott Trudeau Intl

Sun 6/15

9:30 am-1:18 pm

Nonstop3h 48m

$320

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Thu 5/29

7:00 am-4:00 pm

2 stops9h 00m

Montreal Pierre Elliott Trudeau Intl

Sun 6/1

6:35 pm-3:42 pm

1 stop21h 07m

$329

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Wed 5/14

5:59 pm-11:54 pm

1 stop5h 55m

Montreal Pierre Elliott Trudeau Intl

Tue 5/20

6:00 am-11:52 am

1 stop5h 52m

$341

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Mon 6/2

6:00 am-1:44 pm

1 stop7h 44m

Montreal Pierre Elliott Trudeau Intl

Mon 6/2

5:35 pm-10:00 am

1 stop16h 25m

$356

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Mon 5/12

6:25 am-2:54 pm

1 stop8h 29m

Montreal Pierre Elliott Trudeau Intl

Sat 5/17

4:30 pm-11:29 am

1 stop18h 59m

$378

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Thu 5/22

2:26 pm-11:54 pm

1 stop9h 28m

Montreal Pierre Elliott Trudeau Intl

Mon 5/26

6:15 am-1:43 pm

1 stop7h 28m

$427

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Wed 6/25

10:15 am-10:06 pm

1 stop11h 51m

$134

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Wed 6/4

10:37 am-5:40 pm

1 stop7h 03m

$142

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Sat 5/31

1:55 pm-9:30 pm

1 stop7h 35m

$146

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Sat 6/7

8:45 am-5:55 pm

1 stop9h 10m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 16 results
1
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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.
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 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 April 25, 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 24 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, January is the cheapest month in which you can book a flight from Key Largo to Montreal (average of $270). Flying from Key Largo to Montreal in July is currently the most expensive (average of $409). 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 May 1, 2025.

When flying from Key Largo to Montreal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 Wednesday evenings when fares are most often at their lowest. Friday mornings 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 May 1, 2025.

The most flights from KE9 to YMQ are scheduled on a Monday (4 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Montreal by month

Plan your trip to Montreal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Montreal ranges from 2.5 - 4.4 inches per month. August is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Montreal when rainfall is around 2.5 in.

Temperature in Montreal by month

Plan your trip to Montreal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Montreal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

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 May 1, 2025.
Peruse reviews from past customers who have flown with Delta, Air Transat and United Airlines from Key Largo to Montreal 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.
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Air Transat
7.8
Good
385 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
WestJet
7.2
Good
2,826 reviews
Delta
8.0
Very good
7,934 reviews

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

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.

  • What are the cheapest airlines to fly from Key Largo to Montreal one-way?

    $134 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on Delta and Air Transat, with prices starting from $142 and $146, respectively.

  • What are the most reliable airlines from Key Largo to Montreal?

    The top 3 most reliable airlines when flying from Key Largo to Montreal are Avianca (72%), Air Canada (64%) and Air Canada Rouge (64%).

  • What are the cheapest flights from Key Largo to Montreal?

    While on average a flight from Key Largo to Montreal is generally $502, our data shows the cheapest flight currently is $128. When looking at the most popular route, (Miami - Montreal Pierre Elliott Trudeau Intl), you can expect to pay $311 for that flight.

  • Can I find deals for flights from Key Largo to Montreal that include hotel bookings?

    Yes. In addition to deals on Key Largo to Montreal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key Largo to Montreal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Montreal.

  • Can I find deals for business class flights from Key Largo to Montreal?

    Yes. Cheapflights offers flight deals from Key Largo to Montreal 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 Key Largo to Montreal?

    Currently, January is the cheapest month in which you can book a flight from Key Largo to Montreal (average of $270). Flying from Key Largo to Montreal in July is currently the most expensive (average of $409). 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.

See more FAQs

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapest$32Average$184FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$64Average$100FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$79Average$241FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$88Average$355FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$98Average$317FlexibilityNo cancel feeOn-time50%
American AirlinesCheapest$143Average$400FlexibilityNo cancel feeOn-time71%
DeltaCheapest$175Average$361FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$324Average$459FlexibilityNo cancel feeOn-time60%

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