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Cheap flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport from C$ 275

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 12/4. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — YUL
18 Apr — 25 Apr1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Pierre Elliott Trudeau Intl

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Ontario to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 19 March 2026.

Tue 21/46:15 a.m.
ONT
-
YUL
2 stops13h 43m
American Airlines
Wed 29/47:45 a.m.
YUL
-
ONT
2 stops13h 45m
American Airlines
Deal found 18/3C$ 629
Tue 21/410:15 p.m.
ONT
-
YUL
2 stops17h 36m
Delta
Sat 2/59:30 a.m.
YUL
-
ONT
2 stops14h 30m
Delta
Deal found 18/3C$ 794
Tue 28/44:52 p.m.
ONT
-
YUL
2 stops15h 52m
American Airlines
Tue 5/57:45 a.m.
YUL
-
ONT
2 stops13h 39m
American Airlines
Deal found 14/3C$ 807
Sat 18/412:49 p.m.
ONT
-
YUL
2 stops16h 51m
Delta
Wed 29/49:30 a.m.
YUL
-
ONT
2 stops14h 30m
Delta
Deal found 18/3C$ 811
Tue 21/410:15 p.m.
ONT
-
YUL
2 stops17h 36m
Delta
Tue 28/412:42 p.m.
YUL
-
ONT
1 stop11h 18m
Delta
Deal found 18/3C$ 814
Sat 18/412:49 p.m.
ONT
-
YUL
2 stops16h 51m
Delta
Sat 2/59:30 a.m.
YUL
-
ONT
2 stops14h 30m
Delta
Deal found 18/3C$ 832
Tue 28/710:59 p.m.
ONT
-
YUL
2 stops14h 02m
Delta
Tue 4/89:28 a.m.
YUL
-
ONT
2 stops15h 41m
Delta
Deal found 18/3C$ 851
Sat 18/412:49 p.m.
ONT
-
YUL
2 stops16h 51m
Delta
Tue 28/49:30 a.m.
YUL
-
ONT
2 stops14h 30m
Delta
Deal found 18/3C$ 861

Find flight deals from Ontario to Pierre Elliott Trudeau Intl

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Pierre Elliott Trudeau Intl (YUL). 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 19 March 2026.

Round-trip from

C$ 629

One-way from

C$ 275

Popular in

January

Cheapest in

October

Average price

C$ 718
American Airlines
  • American Airlines
  • 21/4-29/4
  • 4 total stops
  • 27h 28m total
  • Ontario to Montreal
Search Deals
12/4
  • 12/4
  • 2 total stops
  • 31h 45m total
  • Ontario to Montreal
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 108 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Pierre Elliott Trudeau Intl 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 629,999 searches. Data last updated 19 March 2026.
Use the filters below to find and compare flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 16/5

7:00 a.m.-5:30 p.m.

1 stop7h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

4:55 p.m.-10:46 p.m.

1 stop8h 51m

C$ 888

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 21/4

10:15 p.m.-6:51 p.m.

2 stops17h 36m

Montreal Pierre Elliott Trudeau Intl

Mon 27/4

12:50 p.m.-9:00 p.m.

1 stop11h 10m

C$ 896

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 15/4

6:49 p.m.-10:40 a.m.

2 stops12h 51m

Montreal Pierre Elliott Trudeau Intl

Sat 18/4

5:00 p.m.-10:31 p.m.

1 stop8h 31m

C$ 902

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 18/8

12:00 p.m.-11:56 p.m.

1 stop8h 56m

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

4:55 p.m.-11:44 p.m.

2 stops9h 49m

C$ 902

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 25/6

1:50 p.m.-8:25 a.m.

1 stop15h 35m

Montreal Pierre Elliott Trudeau Intl

Sat 4/7

6:00 a.m.-9:57 p.m.

2 stops18h 57m

C$ 903

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 28/7

10:59 p.m.-6:53 p.m.

2 stops16h 54m

Montreal Pierre Elliott Trudeau Intl

Wed 5/8

9:28 a.m.-10:09 p.m.

2 stops15h 41m

C$ 909

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 6/8

1:18 p.m.-10:40 a.m.

2 stops18h 22m

Montreal Pierre Elliott Trudeau Intl

Thu 13/8

2:20 p.m.-10:58 p.m.

2 stops11h 38m

C$ 909

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 4/5

1:30 p.m.-10:40 a.m.

2 stops18h 10m

Montreal Pierre Elliott Trudeau Intl

Fri 8/5

6:30 p.m.-5:52 p.m.

2 stops26h 22m

C$ 981

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 7/7

5:00 a.m.-5:10 p.m.

1 stop9h 10m

Montreal Pierre Elliott Trudeau Intl

Tue 14/7

8:15 a.m.-12:47 p.m.

1 stop7h 32m

C$ 992
Quickest round-trip

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 14/7

5:00 a.m.-3:28 p.m.

1 stop7h 28m

Montreal Pierre Elliott Trudeau Intl

Sat 18/7

8:15 a.m.-12:47 p.m.

1 stop7h 32m

C$ 992

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/3

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Ontario to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport

What is the cheapest month to book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 248). Flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of C$ 385). 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 Pierre Elliott Trudeau Intl. 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 Pierre Elliott Trudeau Intl?

    If you book a flight to Montreal Pierre Elliott Trudeau Intl from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 4.9 km from the centre of Ontario. There are 0 flights from Ontario to Montreal Pierre Elliott Trudeau Intl per day from 0 different airlines.

  • How long is the flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

    A quick flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport can take about 8h 56m. United Airlines provides one of the quickest options available for as low as C$ 902. Ontario and Montreal Pierre Elliott Trudeau Intl Airport are separated by a distance of 3899 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • Can I find deals for flights from Ontario to Pierre Elliott Trudeau Intl that include hotel bookings?

    Yes. In addition to deals on Ontario to Pierre Elliott Trudeau Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Pierre Elliott Trudeau Intl?

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

  • Can I find deals for business class flights from Ontario to Pierre Elliott Trudeau Intl?

    Yes. Cheapflights offers flight deals from Ontario to Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 248). Flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of C$ 385). 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

Travelling to a place near Montreal Pierre Elliott Trudeau Intl Airport?

Book flights to Montreal Pierre Elliott Trudeau Intl Airport if you plan to visit one of these locations
Laval
Trois-Rivières
Dorval
Sherbrooke
Cornwall
Montebello
Brossard
Boucherville
Longueuil
Magog
Saint-Jean-sur-Richelieu
Bromont
Drummondville
North Hatley
Saint-Sauveur
Louiseville

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Why should you use Cheapflights to find cheap flight tickets from Ontario to Pierre Elliott Trudeau Intl?

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Can Cheapflights find flights from Ontario to Pierre Elliott Trudeau Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ontario to Pierre Elliott Trudeau Intl, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ontario to Pierre Elliott Trudeau Intl become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Pierre Elliott Trudeau Intl from Ontario today and book when prices fit your budget.

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