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$166+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — YMQ
May 1 — May 81
Fri 5/1
Fri 5/8
1 adult, Economy
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Cheap 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 April 1, 2026.

This American Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 5/94:52 pm
ONT
-
YUL
2 stops15h 52m
American Airlines
Wed 5/137:29 am
YUL
-
ONT
2 stops14h 01m
American Airlines
Deal found 3/27$491
This American Airlines deal was found by Cheapflights users on 3/31. 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 4/2211:59 pm
ONT
-
YUL
1 stop11h 45m
American Airlines
Tue 4/287:29 am
YUL
-
ONT
2 stops13h 55m
American Airlines
Deal found 3/31$521
This American Airlines deal was found by Cheapflights users on 3/30. 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.
Wed 5/611:59 pm
ONT
-
YUL
1 stop11h 45m
American Airlines
Sat 5/97:20 am
YUL
-
ONT
2 stops15h 14m
American Airlines
Deal found 3/30$551
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Sun 5/107:35 pm
ONT
-
YUL
2 stops15h 17m
American Airlines
Sat 5/167:20 am
YUL
-
ONT
2 stops15h 14m
American Airlines
Deal found 4/1$556
This United Airlines deal was found by Cheapflights users on 3/30. 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.
Tue 5/56:59 pm
ONT
-
YUL
2 stops15h 10m
United Airlines
Wed 5/65:00 pm
YUL
-
ONT
1 stop8h 35m
United Airlines
Deal found 3/30$574
This United Airlines deal was found by Cheapflights users on 3/28. 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.
Sat 4/115:10 am
ONT
-
YUL
2 stops9h 20m
United Airlines
Fri 4/1711:23 am
YUL
-
ONT
2 stops13h 27m
United Airlines
Deal found 3/28$575
This American Airlines deal was found by Cheapflights users on 3/31. 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.
Tue 8/187:02 pm
ONT
-
YUL
2 stops13h 33m
American Airlines
Sat 8/227:55 am
YUL
-
ONT
2 stops13h 22m
American Airlines
Deal found 3/31$599

Find flight deals from Ontario to Montreal

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Montreal (YMQ). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 1, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$491
(American Airlines)

One-way from

$166
(Trip.com)

Popular in

January

Cheapest in

October

Average price

$461
Provider with most accurate pricing for Ontario-Montreal (YMQ) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Montreal (YMQ) flights.
Search Deals
From Ontario to Montreal (YMQ)
Search Deals
One-way flight from Ontario to Montreal (YMQ)
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($58 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario 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 1, 2026.
Use the filters below to find and compare flights from Ontario to Montreal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 5/5

1:40 pm-2:40 pm

2 stops22h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 5/6

5:00 pm-10:35 pm

1 stop8h 35m

$574

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 4/11

11:59 pm-1:52 pm

2 stops10h 53m

Montreal Pierre Elliott Trudeau Intl

Fri 4/17

3:45 pm-10:36 pm

1 stop9h 51m

$575

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 8/18

7:00 am-5:30 pm

1 stop7h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 8/22

9:45 am-6:19 pm

1 stop11h 34m

$594
Quickest round-trip

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 7/16

6:30 am-5:30 pm

1 stop8h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 7/22

4:55 pm-10:51 pm

1 stop8h 56m

$594

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 6/30

5:00 am-5:30 pm

2 stops9h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 7/7

4:55 pm-10:51 pm

1 stop8h 56m

$603

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 6/3

6:00 am-11:57 pm

2 stops14h 57m

Montreal Pierre Elliott Trudeau Intl

Sun 6/7

12:48 pm-9:48 pm

1 stop12h 00m

$604

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 4/23

6:00 am-11:51 pm

2 stops14h 51m

Montreal Pierre Elliott Trudeau Intl

Mon 4/27

12:50 pm-6:33 pm

1 stop8h 43m

$604

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 9/15

7:13 pm-8:16 am

1 stop10h 03m

Montreal Pierre Elliott Trudeau Intl

Tue 9/22

9:45 am-6:19 pm

1 stop11h 34m

$626

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 7/28

11:48 am-11:55 pm

1 stop9h 07m

Montreal Pierre Elliott Trudeau Intl

Sat 8/8

7:00 am-10:23 pm

2 stops18h 23m

$636
Cheapest one-way

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sun 7/19

6:30 am-5:30 pm

1 stop8h 00m

$258

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/29

Showing 1-10 of 20 resultsSorted by cheapest first
1
2
  • Most accurate provider: When it comes to deals on Ontario-Montreal flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Montreal flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Montreal flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Montreal flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-Montreal flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, August is the cheapest month in which you can book a flight from Ontario to Montreal (average of $181). Flying from Ontario to Montreal in January is currently the most expensive (average of $281). 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.

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?

    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. 2 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.

  • How long is the flight from Ontario to Montreal?

    Airlines like United Airlines and American Airlines fly from Ontario to Montreal in about 10h 53m. The time it takes to get you to your destination can typically vary by up to 11h 07m. Ontario and Montreal are separated by a distance of 2423 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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. Another option worth looking into is Air Canada, starting at $419 round trip.

  • 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, August is the cheapest month in which you can book a flight from Ontario to Montreal (average of $181). Flying from Ontario to Montreal in January is currently the most expensive (average of $281). 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

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Top 2 airlines flying from Ontario to Montreal

Discover the top 2 airlines that operate flights from Ontario 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 1, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$219Average$614FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$419Average$422FlexibilityNo cancel feeOn-time67%

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