HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Montreal

$129+ 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 5/15. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — YMQ
Apr 29 — May 61
Tue 4/29
Tue 5/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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 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 April 24, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$288
(Booking.com)

One-way from

$129
(Air Canada)

Popular in

December

Cheapest in

October

Average price

$344
Provider with most accurate pricing for Miami-Montreal (YMQ) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Miami-Montreal (YMQ) flights.
Search Deals
From Key Largo to Montreal (YMQ)
Search Deals
One-way flight from Key Largo to Montreal (YMQ)
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($30 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 April 24, 2025.

This Booking.com deal was found by Cheapflights users on 4/23. 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.
Wed 7/232:15 pmMIA - YUL
Nonstop3h 41mAir Canada
Tue 7/299:30 amYUL - MIA
Nonstop3h 41mAir Canada
Deal found 4/23$288
This Delta deal was found by Cheapflights users on 4/23. 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.
Thu 5/88:10 amMIA - YUL
1 stop9h 30mDelta
Mon 5/126:45 pmYUL - MIA
1 stop5h 52mDelta
Deal found 4/23$296
This United deal was found by Cheapflights users on 4/23. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/27:53 amMIA - YUL
1 stop9h 07mMultiple Airlines
Mon 5/59:30 amYUL - MIA
Nonstop3h 48mMultiple Airlines
Deal found 4/23$320
This United Airlines deal was found by Cheapflights users on 4/23. 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.
Thu 5/16:25 amMIA - YUL
1 stop8h 29mUnited Airlines
Wed 5/76:00 amYUL - MIA
1 stop8h 26mUnited Airlines
Deal found 4/23$335
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Wed 4/308:49 pmMIA - YUL
1 stop13h 01mAmerican Airlines
Mon 5/127:00 amYUL - MIA
Nonstop3h 40mAmerican Airlines
Deal found 4/23$357
This Kissandfly.com deal was found by Cheapflights users on 4/23. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/286:00 amMIA - YUL
1 stop5h 33mWestJet
Sun 5/44:30 pmYUL - MIA
1 stop18h 59mWestJet
Deal found 4/23$360
This Flysmarter deal was found by Cheapflights users on 4/23. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/288:22 amMIA - YUL
2 stops8h 23mBritish Airways
Sun 5/47:47 amYUL - MIA
2 stops7h 47mBritish Airways
Deal found 4/23$485

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 April 24, 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

Wed 7/23

2:15 pm-5:56 pm

Nonstop3h 41m

Montreal Pierre Elliott Trudeau Intl

Tue 7/29

9:30 am-1:11 pm

Nonstop3h 41m

$288

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Thu 5/8

8:10 am-5:40 pm

1 stop9h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 5/12

6:45 pm-12:37 am

1 stop5h 52m

$296

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Fri 5/9

5:22 pm-9:23 am

1 stop16h 01m

Montreal Pierre Elliott Trudeau Intl

Sun 5/11

8:30 pm-12:18 am

Nonstop3h 48m

$320

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Fri 5/9

6:25 am-2:54 pm

1 stop8h 29m

Montreal Pierre Elliott Trudeau Intl

Mon 5/12

7:10 pm-11:11 am

1 stop16h 01m

$335

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Wed 5/7

6:59 pm-9:50 am

1 stop14h 51m

Montreal Pierre Elliott Trudeau Intl

Mon 5/12

7:00 am-10:40 am

Nonstop3h 40m

$357

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Tue 6/17

12:02 pm-5:39 pm

1 stop5h 37m

Montreal Pierre Elliott Trudeau Intl

Sat 6/21

6:45 am-7:26 pm

2 stops12h 41m

$380

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Wed 5/14

8:53 am-10:15 pm

2 stops13h 22m

$129

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Thu 7/17

3:35 pm-11:57 pm

1 stop8h 22m

$137

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Sat 6/7

7:40 pm-11:20 pm

Nonstop3h 40m

$140

MiamiMontreal

MIA - YUL

MIAYUL

Miami

Tue 5/6

12:20 pm-12:41 am

2 stops12h 21m

$145

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 14 results
1
2

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 18, 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 April 24, 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 April 24, 2025.

The most flights from KE9 to YMQ are scheduled on a Monday (6 on average). You will have fewer flight options on Wednesday, 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 April 24, 2025.
Peruse reviews from past customers who have flown with Porter Airlines, Delta 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.
Porter Airlines
8.0
Very good
284 reviews

Food

7.6

Comfort

8.1

Boarding

8.2

Entertainment

7.0

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Porter Airlines
8.0
Very good
284 reviews
Porter Airlines
8.0
Very good
284 reviews

Food

7.6

Comfort

8.1

Boarding

8.2

Entertainment

7.0

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Delta
8.0
Very good
7,920 reviews
Porter Airlines
8.0
Very good
284 reviews

Food

7.6

Comfort

8.1

Boarding

8.2

Entertainment

7.0

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
United Airlines
7.4
Good
8,685 reviews
Porter Airlines
8.0
Very good
284 reviews

Food

7.6

Comfort

8.1

Boarding

8.2

Entertainment

7.0

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
8.0
Very good
284 reviews

Food

7.6

Comfort

8.1

Boarding

8.2

Entertainment

7.0

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
WestJet
7.2
Good
2,816 reviews
Porter Airlines
8.0
Very good
284 reviews

Food

7.6

Comfort

8.1

Boarding

8.2

Entertainment

7.0

Crew

8.8

Overall

8.0

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

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?

    $129 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 Porter Airlines and Delta, with prices starting from $131 and $137, 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 $1,154, 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 $273 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Key Largo to Montreal

See prices for flight routes from nearby airports that may be better suited for you.
Fort Lauderdale to Pierre Elliott Trudeau Intl flights
Miami to Pierre Elliott Trudeau Intl flights
Orlando to Pierre Elliott Trudeau Intl flights
Tampa to Pierre Elliott Trudeau Intl flights
West Palm Beach to Pierre Elliott Trudeau Intl flights
Orlando to Ottawa flights
Orlando to Québec City flights
Fort Lauderdale to Québec City flights
Fort Lauderdale to Ottawa flights
Fort Myers to Pierre Elliott Trudeau Intl flights
Tampa to Ottawa flights
Miami to Québec City flights
Jacksonville to Québec City flights
Tampa to Québec City flights
Jacksonville to Pierre Elliott Trudeau Intl flights
Gainesville to Pierre Elliott Trudeau Intl flights
Sarasota to Pierre Elliott Trudeau Intl flights
Miami to Ottawa flights
West Palm Beach to Ottawa flights
West Palm Beach to Québec City flights
Daytona Beach to Pierre Elliott Trudeau Intl flights
Jacksonville to Ottawa flights
Pensacola to Pierre Elliott Trudeau Intl flights
Melbourne to Pierre Elliott Trudeau Intl flights
Tallahassee to Pierre Elliott Trudeau Intl flights
Sarasota to Ottawa flights
Panama City to Pierre Elliott Trudeau Intl flights
Pensacola to Québec City flights
Tallahassee to Ottawa flights
Fort Myers to Ottawa flights
Valparaiso to Pierre Elliott Trudeau Intl flights
Tallahassee to Québec City flights
Tampa to Rouyn-Noranda flights
Melbourne to Ottawa flights
Fort Lauderdale to Rouyn-Noranda flights
Pensacola to Ottawa flights

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 April 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
Flair AirlinesCheapest$32Average$185FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$64Average$100FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$78Average$243FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$87Average$354FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$102Average$315FlexibilityNo cancel feeOn-time50%
American AirlinesCheapest$143Average$398FlexibilityNo cancel feeOn-time71%
DeltaCheapest$175Average$361FlexibilityNo cancel feeOn-timeN/A
WestJetCheapest$324Average$459FlexibilityNo cancel feeOn-time60%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.