What are the cheapest airlines flying from Ontario to Montreal round-trip?

Flying on United Airlines is currently your cheapest option to Montreal, with prices starting at $219. Additional round-trip tickets that might be worth considering are offered by Delta and Air Canada, with the lowest prices starting at $347 and $376, respectively.

What is the cheapest day to fly from Ontario to Montreal?

Travelers seeking maximum savings on their Ontario to Montreal flight should consider departing on Saturday mornings 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.

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.

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).

What are the most popular airlines that fly from Ontario to Montreal?

The most popular airlines flying from Ontario to Montreal are Air Canada, Delta and United Airlines. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Ontario to Montreal?

Friday is generally a great day to depart. Flying on this day could help you save up to 66%.

How far in advance should I book a flight from Ontario to Montreal?

Travelers have found it’s best to book a flight 42 days in advance to save up to 106% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 42 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Ontario to Montreal 1-2 weeks in advance for as low as $301, or $1,066 for flights within the next 24 hours.

What is the cheapest month to fly from Ontario to Montreal?

Flights from Ontario to Montreal lean towards being more expensive in December. Prices are generally better when you fly from Ontario to Montreal in March, with the cheapest ticket starting at $127.

What airport do you fly from for flights from Ontario to Montreal?

Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Montreal. 3 airlines have flights from Ontario to Montreal on a regular basis. Booking flights from Ontario to Montreal should not be difficult; the airport handles an average of 0 outbound flights to Montreal per day.

Can I find deals for flights from Ontario to Montreal that include hotel bookings?

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

How can I find direct flights from Ontario to Montreal?

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

Can I find deals for business class flights from Ontario to Montreal?

Yes. Cheapflights offers flight deals from Ontario 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.

$152+ Flights from Ontario to Montreal

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Cheap flight deals from Ontario to Montreal

Round-trip from	$497 (American Airlines)
One-way from	$152 (Trip.com)
Popular in	December
Cheapest in	March
Average price	$441

From Ontario to Montreal (YMQ)

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One-way flight from Ontario to Montreal (YMQ)

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Highest demand for flights based on searches. 17% potential increase in price ($97 potential increase over avg. RT price).

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Cheapest flight prices on average. 5% potential price decrease ($25 potential savings vs. average RT price).

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Average for round-trip flights in August 2025

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Find flight deals from Ontario to Montreal

Cheapest flights from Ontario to Montreal
Explore the most affordable flight options available from Ontario to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Wed 10/14:45 pmONT - YUL

2 stops16h 39mAmerican Airlines

Tue 10/77:50 amYUL - ONT

2 stops13h 45mAmerican Airlines

Deal found 8/15

$497

Tue 9/1610:00 pmONT - YUL

2 stops20h 57mDelta

Mon 9/2211:00 amYUL - ONT

2 stops14h 23mDelta

Deal found 8/16

$665

Sun 9/1410:00 pmONT - YUL

2 stops20h 57mDelta

Mon 9/227:00 amYUL - ONT

2 stops18h 23mDelta

Deal found 8/16

$675

Sat 9/612:47 pmONT - YUL

2 stops17h 59mAmerican Airlines

Mon 9/157:50 amYUL - ONT

2 stops16h 58mAmerican Airlines

Deal found 8/17

$695

Tue 9/161:42 pmONT - YUL

1 stop15h 34mUnited Airlines

Mon 9/228:05 amYUL - ONT

1 stop15h 28mUnited Airlines

Deal found 8/16

$698

Sat 9/67:00 amONT - YUL

2 stops24h 09mUnited Airlines

Mon 9/154:45 pmYUL - ONT

1 stop27h 52mUnited Airlines

Deal found 8/17

$702

Sat 9/61:42 pmONT - YUL

1 stop15h 34mUnited Airlines

Tue 9/98:05 amYUL - ONT

1 stop12h 32mUnited Airlines

Deal found 8/16

$718

Sat 9/611:45 amONT - YUL

1 stop9h 08mDelta

Tue 9/96:00 amYUL - ONT

2 stops16h 11mDelta

Deal found 8/16

$722

Sat 9/61:42 pmONT - YUL

2 stops17h 53mUnited Airlines

Wed 9/108:05 amYUL - ONT

1 stop12h 32mUnited Airlines

Deal found 8/16

$728

Mon 9/156:50 pmONT - YUL

2 stops16h 04mUnited Airlines

Mon 9/228:05 amYUL - ONT

1 stop15h 28mUnited Airlines

Deal found 8/16

$729

Best flights from Ontario to Montreal
Discover carefully curated flight deals from Ontario to Montreal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 18, 2025.

Wed 10/14:45 pmONT - YUL

2 stops16h 39mAmerican Airlines

Tue 10/77:50 amYUL - ONT

2 stops13h 45mAmerican Airlines

Deal found 8/15

$497

Tue 9/1610:00 pmONT - YUL

2 stops20h 57mDelta

Mon 9/2211:00 amYUL - ONT

2 stops14h 23mDelta

Deal found 8/16

$665

Tue 9/161:42 pmONT - YUL

1 stop15h 34mUnited Airlines

Mon 9/228:05 amYUL - ONT

1 stop15h 28mUnited Airlines

Deal found 8/16

$698

Mon 9/1510:00 pmONT - YUL

2 stops15h 05mDelta

Mon 9/227:00 amYUL - ONT

2 stops18h 23mDelta

Deal found 8/16

$675

Sat 9/612:47 pmONT - YUL

2 stops17h 59mAmerican Airlines

Mon 9/157:50 amYUL - ONT

2 stops16h 58mAmerican Airlines

Deal found 8/16

$695

Wed 9/171:42 pmONT - YUL

1 stop15h 34mUnited Airlines

Mon 9/228:05 amYUL - ONT

1 stop15h 28mUnited Airlines

Deal found 8/16

$698

Sun 9/1410:00 pmONT - YUL

2 stops20h 57mDelta

Mon 9/227:00 amYUL - ONT

2 stops18h 23mDelta

Deal found 8/16

$675

Sat 9/67:00 amONT - YUL

2 stops24h 09mUnited Airlines

Mon 9/154:45 pmYUL - ONT

1 stop27h 52mUnited Airlines

Deal found 8/16

$702

Last-minute flights from Ontario to Montreal
Discover last-minute flight deals from Ontario to Montreal. Data last updated August 18, 2025 and is based on user searches.

Fri 8/2210:50 amONT - YUL

2 stops19h 56mAmerican Airlines

Wed 8/2710:31 amYUL - ONT

2 stops15h 17mAmerican Airlines

Deal found 8/15

$864

Sat 8/2312:47 pmONT - YUL

2 stops17h 59mAmerican Airlines

Tue 8/265:36 pmYUL - ONT

2 stops21h 16mAmerican Airlines

Deal found 8/15

$833

Sat 8/231:19 pmONT - YUL

2 stops16h 16mUnited Airlines

Tue 8/268:05 amYUL - ONT

2 stops15h 38mUnited Airlines

Deal found 8/16

$953

Sat 8/2312:47 pmONT - YUL

2 stops17h 59mAmerican Airlines

Thu 8/2810:31 amYUL - ONT

2 stops10h 54mAmerican Airlines

Deal found 8/15

$959

Sat 8/236:50 pmONT - YUL

1 stop10h 26mUnited Airlines

Sat 9/206:15 amYUL - ONT

1 stop19h 15mUnited Airlines

Deal found 8/17

$992

Sun 8/247:02 pmONT - YUL

2 stops17h 23mAmerican Airlines

Mon 8/255:36 pmYUL - ONT

2 stops25h 30mAmerican Airlines

Deal found 8/15

$836

Sun 8/2411:59 pmONT - YUL

2 stops13h 57mAmerican Airlines

Thu 8/2810:31 amYUL - ONT

2 stops10h 54mAmerican Airlines

Deal found 8/15

$990

Sun 8/246:00 amONT - YUL

1 stop11h 05mUnited Airlines

Wed 8/278:05 amYUL - ONT

2 stops16h 20mUnited Airlines

Deal found 8/15

$991

Mon 8/2511:45 amONT - YUL

2 stops19h 22mDelta

Wed 8/275:05 pmYUL - ONT

2 stops29h 06mDelta

Deal found 8/16

$942

Wed 9/31:42 pmONT - YUL

1 stop15h 34mUnited Airlines

Tue 9/98:05 amYUL - ONT

1 stop15h 28mUnited Airlines

Deal found 8/16

$741

Sat 9/612:47 pmONT - YUL

2 stops17h 59mAmerican Airlines

Mon 9/157:50 amYUL - ONT

2 stops16h 58mAmerican Airlines

Deal found 8/17

$695

Sat 9/67:00 amONT - YUL

2 stops24h 09mUnited Airlines

Mon 9/154:45 pmYUL - ONT

1 stop27h 52mUnited Airlines

Deal found 8/17

$702

One-way flights from Ontario to Montreal
Search for one-way flight options from Ontario to Montreal. Find affordable one-way fares based on user searches. Data last updated August 18, 2025.

Thu 10/910:05 amONT - YUL

2 stops19h 57mMultiple Airlines

Deal found 8/15

$152

Wed 10/18:00 amONT - YUL

1 stop20h 10mMultiple Airlines

Deal found 8/14

$155

Sat 9/61:37 pmONT - YUL

1 stop14h 38mMultiple Airlines

Deal found 8/16

$165

Fri 9/57:30 pmONT - YUL

1 stop8h 40mMultiple Airlines

Deal found 8/16

$173

Thu 9/46:00 amONT - YUL

1 stop22h 10mMultiple Airlines

Deal found 8/17

$174

Tue 9/308:00 amONT - YUL

3 stops37h 41mMultiple Airlines

Deal found 8/16

$200

Tue 9/304:45 pmONT - YUL

2 stops19h 48mAmerican Airlines

Deal found 8/16

$207

Sat 11/17:00 amONT - YUL

1 stop11h 17mUnited Airlines

Deal found 8/15

$307

Fly from

Fly to

Route

Depart

Return

Price

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 10/1

4:45 pm-12:24 pm

2 stops16h 39m

Montreal Pierre Elliott Trudeau Intl

Tue 10/7

7:50 am-6:35 pm

2 stops13h 45m

$497

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 9/16

10:00 pm-9:57 pm

2 stops20h 57m

Montreal Pierre Elliott Trudeau Intl

Mon 9/22

11:00 am-10:23 pm

2 stops14h 23m

$665

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 9/15

10:00 pm-4:05 pm

2 stops15h 05m

Montreal Pierre Elliott Trudeau Intl

Mon 9/22

7:00 am-10:23 pm

2 stops18h 23m

$675

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sun 9/14

10:00 pm-9:57 pm

2 stops20h 57m

Montreal Pierre Elliott Trudeau Intl

Mon 9/22

7:00 am-10:23 pm

2 stops18h 23m

$675

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 9/6

12:47 pm-9:46 am

2 stops17h 59m

Montreal Pierre Elliott Trudeau Intl

Mon 9/15

7:50 am-9:48 pm

2 stops16h 58m

$695

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 9/16

1:42 pm-8:16 am

1 stop15h 34m

Montreal Pierre Elliott Trudeau Intl

Mon 9/22

8:05 am-8:33 pm

1 stop15h 28m

$698

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 9/17

1:42 pm-8:16 am

1 stop15h 34m

Montreal Pierre Elliott Trudeau Intl

Mon 9/22

8:05 am-8:33 pm

1 stop15h 28m

$698

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 9/6

7:00 am-10:09 am

2 stops24h 09m

Montreal Pierre Elliott Trudeau Intl

Mon 9/15

4:45 pm-5:37 pm

1 stop27h 52m

$702

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 10/9

10:05 am-9:02 am

2 stops19h 57m

$152

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 10/1

8:00 am-7:10 am

1 stop20h 10m

$155

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/15

Showing 1-10 of 15 results

Best time to book a flight from Ontario to Montreal

Have a flexible travel schedule? Discover the best time to fly to Montreal from Ontario 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 Ontario to Montreal

What is the cheapest month to book a flight from Ontario to Montreal?

Currently, January is the cheapest month in which you can book a flight from Ontario to Montreal (average of $270). Flying from Ontario 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 ONT to YMQ?

A simple way to save on the total cost of your ticket is to fly from Ontario to Montreal at noon. If you’re flexible enough to do this you can expect to save up to 43% on your trip compared to booking a flight in the afternoon.

Reviews of airlines servicing Montreal

See what other customers who have flown with Air Canada from Ontario to Montreal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Air Canada

7.1

Good

9,992 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Oct 2024

DEL - YUL

They wouldn't let us check a carry on bag, said it was too small and they only take the large bags. It resulted in us having several items removed from the bag because we wanted to check it. Also 1 locked checked bag was opened and prescription medication went missing.

Air Canada

7.1

Good

9,992 reviews

Air Canada

7.1

Good

9,992 reviews

Reviews

1 / 20

6.0

Good

Anonymous,Oct 2024

DEL - YUL

Related info for your journey

What airport do you fly from for flights from Ontario to Montreal?
Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Montreal. 3 airlines have flights from Ontario to Montreal on a regular basis. Booking flights from Ontario to Montreal should not be difficult; the airport handles an average of 0 outbound flights to Montreal per day.
What are the cheapest airlines flying from Ontario to Montreal round-trip?
Flying on United Airlines is currently your cheapest option to Montreal, with prices starting at $219. Additional round-trip tickets that might be worth considering are offered by Delta and Air Canada, with the lowest prices starting at $347 and $376, respectively.
Can I find deals for flights from Ontario to Montreal that include hotel bookings?
Yes. In addition to deals on Ontario to Montreal flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Montreal?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Montreal.
Can I find deals for business class flights from Ontario to Montreal?
Yes. Cheapflights offers flight deals from Ontario 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 Ontario to Montreal?
Currently, January is the cheapest month in which you can book a flight from Ontario to Montreal (average of $270). Flying from Ontario 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

Top 3 airlines flying from Ontario to Montreal

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$219	Average$496	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$347	Average$470	FlexibilityNo cancel fee	On-timeN/A
Air Canada	Cheapest$376	Average$600	FlexibilityNo cancel fee	On-time67%

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$152+ Cheap flights from Ontario (ONT) 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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Montreal with Cheapflights

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Cheap flight deals from Ontario to Montreal

Round-trip from

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Find flight deals from Ontario to Montreal

Cheapest flights from Ontario to MontrealExplore the most affordable flight options available from Ontario to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Explore the most affordable flight options available from Ontario to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Montreal that are best for you.

Best time to book a flight from Ontario to Montreal

Have a flexible travel schedule? Discover the best time to fly to Montreal from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Montreal

What is the cheapest month to book a flight from Ontario to Montreal?

What is the cheapest time of day to fly from ONT to YMQ?

Find hourly flight availability from Ontario 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 August 18, 2025.

Reviews of airlines servicing Montreal

See what other customers who have flown with Air Canada from Ontario to Montreal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Montreal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Ontario to Montreal?

What are the cheapest airlines flying from Ontario to Montreal round-trip?

Can I find deals for flights from Ontario to Montreal that include hotel bookings?

How can I find direct flights from Ontario to Montreal?

Can I find deals for business class flights from Ontario to Montreal?

What is the cheapest month to book a flight from Ontario to Montreal?

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 Ontario to Montreal

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Top 3 airlines flying from Ontario to Montreal

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Cheapest flights from Ontario to Montreal
Explore the most affordable flight options available from Ontario to Montreal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 18, 2025.