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Cheap flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport from C$ 320

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 15/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — YUL
31 Aug — 7 Sep1
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 1 August 2026.

Sat 29/87:00 a.m.
ONT
-
YUL
1 stop7h 30m
Lufthansa
Sat 5/96:10 a.m.
YUL
-
ONT
2 stops15h 02m
Lufthansa
Deal found 29/7C$ 629
Sat 29/86:15 a.m.
ONT
-
YUL
2 stops13h 38m
Multiple Airlines
Sat 5/99:45 a.m.
YUL
-
ONT
2 stops13h 16m
Multiple Airlines
Deal found 29/7C$ 679
Sat 29/87:05 a.m.
ONT
-
YUL
2 stops12h 48m
American Airlines
Sat 5/93:45 p.m.
YUL
-
ONT
1 stop10h 14m
American Airlines
Deal found 29/7C$ 704
Tue 18/81:56 p.m.
ONT
-
YUL
1 stop15h 20m
United Airlines
Tue 25/89:45 a.m.
YUL
-
ONT
1 stop15h 50m
United Airlines
Deal found 27/7C$ 721
Wed 26/87:00 a.m.
ONT
-
YUL
1 stop7h 30m
United Airlines
Wed 2/94:55 p.m.
YUL
-
ONT
1 stop8h 40m
United Airlines
Deal found 29/7C$ 728
Wed 30/91:52 p.m.
ONT
-
YUL
1 stop15h 24m
United Airlines
Thu 1/1011:23 a.m.
YUL
-
ONT
2 stops12h 35m
United Airlines
Deal found 27/7C$ 729
Tue 29/97:00 a.m.
ONT
-
YUL
1 stop7h 30m
United Airlines
Sat 3/109:45 a.m.
YUL
-
ONT
2 stops14h 13m
United Airlines
Deal found 27/7C$ 733
Tue 3/116:00 a.m.
ONT
-
YUL
2 stops12h 42m
United Airlines
Tue 10/116:00 a.m.
YUL
-
ONT
2 stops17h 15m
United Airlines
Deal found 27/7C$ 742
Sat 29/87:00 a.m.
ONT
-
YUL
1 stop7h 30m
United Airlines
Sat 5/94:55 p.m.
YUL
-
ONT
1 stop8h 40m
United Airlines
Deal found 29/7C$ 750
Mon 17/87:13 p.m.
ONT
-
YUL
1 stop10h 03m
United Airlines
Tue 25/89:45 a.m.
YUL
-
ONT
1 stop15h 50m
United Airlines
Deal found 27/7C$ 756
Tue 3/1112:18 p.m.
ONT
-
YUL
1 stop8h 39m
Delta
Sun 8/117:50 p.m.
YUL
-
ONT
2 stops29h 09m
Delta
Deal found 27/7C$ 760

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 1 August 2026.

Round-trip from

C$ 629

One-way from

C$ 320

Popular in

June

Cheapest in

October

Average price

C$ 848
Lufthansa
  • Lufthansa
  • 29/8-5/9
  • 3 total stops
  • 22h 32m total
  • Ontario to Montreal
Search Deals
United Airlines
  • United Airlines
  • 15/8
  • 1 total stop
  • 15h 20m total
  • Ontario to Montreal
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (C$ 287 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

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 1 August 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 29/8

12:00 p.m.-11:52 p.m.

1 stop8h 52m

Montreal Pierre Elliott Trudeau Intl

Sat 5/9

7:00 a.m.-10:23 p.m.

2 stops18h 23m

C$ 733

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 31/10

7:00 a.m.-9:17 p.m.

1 stop11h 17m

Montreal Pierre Elliott Trudeau Intl

Wed 4/11

7:00 a.m.-9:40 p.m.

2 stops17h 40m

C$ 764

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 17/8

7:13 p.m.-8:16 a.m.

1 stop10h 03m

Montreal Pierre Elliott Trudeau Intl

Tue 25/8

9:45 a.m.-8:01 p.m.

2 stops13h 16m

C$ 770

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 7/9

7:13 p.m.-8:16 a.m.

1 stop10h 03m

Montreal Pierre Elliott Trudeau Intl

Sat 12/9

6:10 a.m.-8:53 p.m.

2 stops17h 43m

C$ 801

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 6/10

12:18 p.m.-11:59 p.m.

1 stop8h 41m

Montreal Pierre Elliott Trudeau Intl

Sat 10/10

6:00 a.m.-7:30 p.m.

2 stops16h 30m

C$ 820

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 15/8

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

1 stop7h 30m

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

9:45 a.m.-8:01 p.m.

2 stops13h 16m

C$ 830

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 18/8

1:56 p.m.-8:16 a.m.

1 stop15h 20m

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

9:45 a.m.-10:35 p.m.

1 stop15h 50m

C$ 837
Quickest round-trip

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 15/8

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

1 stop7h 30m

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

8:15 a.m.-12:50 p.m.

1 stop7h 35m

C$ 840

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Sat 10/10

5:00 a.m.-3:29 p.m.

1 stop7h 29m

Montreal Pierre Elliott Trudeau Intl

Sat 17/10

8:10 a.m.-10:51 p.m.

1 stop17h 41m

C$ 841

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 30/12

10:59 p.m.-11:44 a.m.

1 stop9h 45m

Montreal Pierre Elliott Trudeau Intl

Mon 11/1

7:00 a.m.-4:12 p.m.

2 stops12h 12m

C$ 864

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

Showing 1-10 of 21 resultsSorted by cheapest first
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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.

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 52m. Delta provides one of the quickest options available for as low as C$ 733. 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.

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
Dorval
Trois-Rivières
Laval
Brossard
Cornwall
Longueuil
Sherbrooke
Montebello
Boucherville
Magog
Bromont
Saint-Jean-sur-Richelieu
Drummondville
North Hatley
Saint-Sauveur
Louiseville

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How does Cheapflights help users find flights from Ontario to Pierre Elliott Trudeau Intl?

Cheapflights helps you search for flights from Ontario to Pierre Elliott Trudeau Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario to Pierre Elliott Trudeau Intl.

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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