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$147+ 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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — YMQ
May 17 — May 241
Sun 5/17
Sun 5/24
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 17, 2026.

This American Airlines deal was found by Cheapflights users on 4/17. 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 5/124:52 pm
ONT
-
YUL
2 stops16h 26m
American Airlines
Tue 5/197:45 am
YUL
-
ONT
2 stops13h 39m
American Airlines
Deal found 4/17$573
This American Airlines deal was found by Cheapflights users on 4/16. 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 6/97:12 pm
ONT
-
YUL
2 stops13h 30m
American Airlines
Wed 6/243:48 pm
YUL
-
ONT
1 stop11h 11m
American Airlines
Deal found 4/16$589
This American Airlines deal was found by Cheapflights users on 4/16. 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 stops16h 26m
American Airlines
Tue 5/127:45 am
YUL
-
ONT
2 stops13h 39m
American Airlines
Deal found 4/16$612
This American Airlines deal was found by Cheapflights users on 4/14. 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 5/1611:59 pm
ONT
-
YUL
1 stop11h 45m
American Airlines
Sat 5/2310:30 am
YUL
-
ONT
2 stops15h 06m
American Airlines
Deal found 4/14$627
This American Airlines deal was found by Cheapflights users on 4/16. 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 6/87:12 pm
ONT
-
YUL
2 stops13h 30m
American Airlines
Wed 6/247:29 am
YUL
-
ONT
1 stop18h 07m
American Airlines
Deal found 4/16$629
This American Airlines deal was found by Cheapflights users on 4/14. 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 6/287:12 pm
ONT
-
YUL
2 stops13h 30m
American Airlines
Sat 7/410:30 am
YUL
-
ONT
2 stops15h 04m
American Airlines
Deal found 4/14$633

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 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$573
(American Airlines)

One-way from

$147
(Trip.com)

Popular in

March

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. 1% potential increase in price ($6 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 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 17, 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

Sun 9/27

6:53 pm-8:16 am

1 stop10h 23m

Montreal Pierre Elliott Trudeau Intl

Tue 10/27

4:45 pm-10:26 pm

1 stop8h 41m

$669

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Fri 9/18

12:00 pm-11:56 pm

1 stop8h 56m

Montreal Pierre Elliott Trudeau Intl

Fri 10/2

12:45 pm-9:56 pm

1 stop12h 11m

$669

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 5/2

7:00 am-9:26 pm

1 stop11h 26m

Montreal Pierre Elliott Trudeau Intl

Wed 5/6

5:00 pm-10:35 pm

1 stop8h 35m

$669

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sun 9/20

12:00 pm-11:56 pm

1 stop8h 56m

Montreal Pierre Elliott Trudeau Intl

Fri 10/2

12:45 pm-9:56 pm

1 stop12h 11m

$669
Quickest round-trip

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 5/30

6:30 am-5:30 pm

1 stop8h 00m

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

4:55 pm-10:46 pm

1 stop8h 51m

$669

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 7/30

1:50 pm-8:25 am

1 stop15h 35m

Montreal Pierre Elliott Trudeau Intl

Tue 8/4

9:45 am-10:51 pm

1 stop16h 06m

$669

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 7/27

10:00 pm-4:24 pm

2 stops15h 24m

Montreal Pierre Elliott Trudeau Intl

Mon 8/3

12:44 pm-9:44 pm

1 stop12h 00m

$679

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sun 7/12

10:00 pm-4:24 pm

2 stops15h 24m

Montreal Pierre Elliott Trudeau Intl

Fri 7/17

12:44 pm-9:44 pm

1 stop12h 00m

$679

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sun 6/21

6:30 am-9:26 pm

1 stop11h 56m

Montreal Pierre Elliott Trudeau Intl

Fri 7/3

4:55 pm-10:51 pm

1 stop8h 56m

$707

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 6/22

9:40 am-11:42 pm

2 stops35h 02m

Montreal Pierre Elliott Trudeau Intl

Thu 7/2

7:00 am-11:45 pm

2 stops19h 45m

$713

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/13

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
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  • 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
No data available for this route at this time. Please check back soon.

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 Delta fly from Ontario to Montreal in about 8h 56m. The time it takes to get you to your destination can typically vary by up to 1h 27m. 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.

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 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$219Average$496FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$419Average$422FlexibilityNo cancel feeOn-time67%

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