Cheap flights from Ontario to Montreal from $139

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Montreal departing on 10/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Montreal (ONT-YUL)

Cheap round-trip flights

American Airlines Logo
4:49 pm - 11:40 amONT-YUL
15h 51m2 stops
American Airlines Logo
7:29 am - 6:35 pmYUL-ONT
14h 06m2 stops
$425American Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
American Airlines Logo
11:59 pm - 2:49 pmONT-YUL
11h 50m1 stop
American Airlines Logo
7:29 am - 6:35 pmYUL-ONT
14h 06m2 stops
$568American Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
 Logo
6:38 pm - 4:49 pmONT-YUL
19h 11m1 stop
 Logo
5:50 pm - 12:37 pmYUL-ONT
21h 47m1 stop
Wed, Oct 29 - Tue, Nov 4
 Logo
1:53 pm - 8:16 amONT-YUL
15h 23m1 stop
 Logo
5:25 pm - 8:44 pmYUL-ONT
30h 19m1 stop
Thu, Oct 23 - Mon, Oct 27
 Logo
1:53 pm - 8:16 amONT-YUL
15h 23m1 stop
 Logo
7:00 pm - 10:51 pmYUL-ONT
30h 51m2 stops
Thu, Oct 23 - Mon, Oct 27
United Airlines Logo
1:15 pm - 11:28 amONT-YUL
19h 13m2 stops
United Airlines Logo
8:00 pm - 9:49 pmYUL-ONT
28h 49m2 stops
$695United Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
United Airlines Logo
1:53 pm - 8:16 amONT-YUL
15h 23m1 stop
United Airlines Logo
6:30 pm - 12:13 pmYUL-ONT
20h 43m1 stop
$697United Airlines
Find Deal
Wed, Oct 1 - Thu, Oct 2
American Airlines Logo
5:03 pm - 12:20 pmONT-YUL
16h 17m2 stops
American Airlines Logo
2:25 pm - 2:57 pmYUL-ONT
27h 32m2 stops
$701American Airlines
Find Deal
Wed, Feb 18 - Sat, Feb 21
Air Canada Logo
6:36 pm - 8:16 amONT-YUL
10h 40m1 stop
Air Canada Logo
4:45 pm - 10:52 pmYUL-ONT
9h 07m1 stop
$782Air Canada
Find Deal
Wed, Oct 1 - Thu, Oct 2
Air Canada Logo
6:36 pm - 8:16 amONT-YUL
10h 40m1 stop
Air Canada Logo
8:05 am - 10:52 pmYUL-ONT
17h 47m1 stop
$895Air Canada
Find Deal
Thu, Oct 16 - Sun, Oct 19

United Airlines flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport

Our best United Airlines deals on Ontario to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
United Airlines
Oct 23
ONT1:15 pmOntario
19h 13m
2 stops
YUL11:28 amMontreal Pierre Elliott Trudeau Intl
Oct 27
YUL8:00 pmMontreal Pierre Elliott Trudeau Intl
28h 49m
2 stops
ONT9:49 pmOntario
United Airlines
Oct 1
ONT1:53 pmOntario
15h 23m
1 stop
YUL8:16 amMontreal Pierre Elliott Trudeau Intl
Oct 2
YUL6:30 pmMontreal Pierre Elliott Trudeau Intl
20h 43m
1 stop
ONT12:13 pmOntario
United Airlines
Oct 23
ONT1:53 pmOntario
15h 23m
1 stop
YUL8:16 amMontreal Pierre Elliott Trudeau Intl
Oct 26
YUL6:00 amMontreal Pierre Elliott Trudeau Intl
19h 31m
1 stop
ONT10:31 pmOntario

Air Canada flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport

Our best Air Canada deals on Ontario to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
Air Canada
Oct 1
ONT6:36 pmOntario
10h 40m
1 stop
YUL8:16 amMontreal Pierre Elliott Trudeau Intl
Oct 2
YUL4:45 pmMontreal Pierre Elliott Trudeau Intl
9h 07m
1 stop
ONT10:52 pmOntario
Air Canada
Oct 16
ONT6:36 pmOntario
10h 40m
1 stop
YUL8:16 amMontreal Pierre Elliott Trudeau Intl
Oct 19
YUL8:05 amMontreal Pierre Elliott Trudeau Intl
17h 47m
1 stop
ONT10:52 pmOntario
Air Canada
Dec 27
ONT5:05 amOntario
8h 53m
1 stop
YUL4:58 pmMontreal Pierre Elliott Trudeau Intl
Jan 10
YUL12:10 pmMontreal Pierre Elliott Trudeau Intl
11h 48m
2 stops
ONT8:58 pmOntario

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport 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, momondo users made 832,500 searches. Data last updated September 8, 2025.
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

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 10/22

4:49 pm-11:40 am

2 stops15h 51m

Montreal Pierre Elliott Trudeau Intl

Wed 10/29

7:29 am-6:35 pm

2 stops14h 06m

$425

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 10/22

11:59 pm-2:49 pm

1 stop11h 50m

Montreal Pierre Elliott Trudeau Intl

Wed 10/29

7:29 am-6:35 pm

2 stops14h 06m

$568

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 10/29

6:38 pm-4:49 pm

1 stop19h 11m

Montreal Pierre Elliott Trudeau Intl

Tue 11/4

5:50 pm-12:37 pm

1 stop21h 47m

$651

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 10/23

1:53 pm-8:16 am

1 stop15h 23m

Montreal Pierre Elliott Trudeau Intl

Mon 10/27

5:25 pm-8:44 pm

1 stop30h 19m

$653

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 10/23

1:53 pm-8:16 am

1 stop15h 23m

Montreal Pierre Elliott Trudeau Intl

Mon 10/27

7:00 pm-10:51 pm

2 stops30h 51m

$668

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 10/23

1:15 pm-11:28 am

2 stops19h 13m

Montreal Pierre Elliott Trudeau Intl

Mon 10/27

8:00 pm-9:49 pm

2 stops28h 49m

$695

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 10/1

1:53 pm-8:16 am

1 stop15h 23m

Montreal Pierre Elliott Trudeau Intl

Thu 10/2

6:30 pm-12:13 pm

1 stop20h 43m

$697

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 2/18

5:03 pm-12:20 pm

2 stops16h 17m

Montreal Pierre Elliott Trudeau Intl

Sat 2/21

2:25 pm-2:57 pm

2 stops27h 32m

$701

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 10/1

6:36 pm-8:16 am

1 stop10h 40m

Montreal Pierre Elliott Trudeau Intl

Thu 10/2

4:45 pm-10:52 pm

1 stop9h 07m

$782

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 10/16

6:36 pm-8:16 am

1 stop10h 40m

Montreal Pierre Elliott Trudeau Intl

Sun 10/19

8:05 am-10:52 pm

1 stop17h 47m

$895

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See travel insights to Montreal from

How to get the cheapest flight ticket from Ontario to Montreal Pierre Elliott Trudeau Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport?

The cheapest day to depart from Ontario to Montreal Pierre Elliott Trudeau Intl Airport is on a Thursday. Travelers who choose to depart for Montreal Pierre Elliott Trudeau Intl Airport on a Thursday will often find tickets for as low as $665. Flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport on a Friday will generally be more expensive and average around $750. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport?

In the afternoon is the cheapest time of day to fly from Ontario to Montreal Pierre Elliott Trudeau Intl Airport when you can find flight prices for as low as $226. Flying to Montreal Pierre Elliott Trudeau Intl Airport in the afternoon is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive with an average ticket price of $737.

When to book flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Montreal Pierre Elliott Trudeau Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Montreal Pierre Elliott Trudeau Intl Airport (ONT to YUL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport

Direct flights

None
There are no direct flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport. There are no popular flight routes from Ontario to Montreal Pierre Elliott Trudeau Intl Airport.
  • How far is Ontario to Montreal Pierre Elliott Trudeau Intl by plane?

    There are 2425.2 mi between Ontario and Montreal Pierre Elliott Trudeau Intl. In terms of flight time, this usually takes a little over 7h 21m.

  • When did momondo last update prices for flights from Ontario Airport to Montreal Pierre Elliott Trudeau Intl Airport?

    Prices for flights from Ontario Airport to Montreal Pierre Elliott Trudeau Intl Airport are updated daily.

  • How many operators does momondo search for flights from Ontario Airport to Montreal Pierre Elliott Trudeau Intl Airport?

  • How old do you have to be to fly from Ontario Airport to Montreal Pierre Elliott Trudeau Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Montreal Pierre Elliott Trudeau Intl Airport.

  • What documentation or ID do you need to fly to Montreal Pierre Elliott Trudeau Intl Airport?

    The required travel and health documents for your Montreal Pierre Elliott Trudeau Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Montreal Pierre Elliott Trudeau Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

Best airlines flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport

Compare and see reviews for airlines that fly from Ontario to Montreal Pierre Elliott Trudeau Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $219Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights
DeltaPriceFrom $347Free CancellationRating
7.9
7,966 reviews
Search Delta flights
Air CanadaPriceFrom $376Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights

Traveling to a place near Montreal?

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

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Montreal?

Finding the right flight to Montreal from Ontario is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Montreal quick and easy, saving you time and money.

Can I find flights from Ontario to Montreal with flexible booking policies on momondo?

Yes. All flights to Montreal from Ontario on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ontario to Montreal?

Once you have performed a search for Ontario to Montreal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Ontario to Montreal right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ontario to Montreal now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Montreal and let you know when they change.

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1 adult
Wed 10/8
Wed 10/15

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