ONT - YUL

$153 Find Cheap Flights from Ontario to Montreal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Montreal departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult

KAYAK searches hundreds of travel sites at once for deals on flights to Montreal Pierre Elliott Trudeau Intl Airport

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Montreal, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Montreal, as well as popular online travel agencies
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Cheap Flights from Ontario to Montreal

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Montreal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Recent round-trip flight deals from Ontario to Montreal

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to Montreal.
Discover the best prices for you by selecting your travel dates on KAYAK.
United Airlines Logo
5:05 am - 3:26 pmONT-YUL
7h 21m1 stop
United Airlines Logo
4:05 pm - 8:53 pmYUL-ONT
7h 48m1 stop
$426United Airlines
Find Deal
Thu, May 15 - Wed, May 21
United Airlines Logo
5:10 am - 11:26 pmONT-YUL
15h 16m1 stop
United Airlines Logo
9:45 am - 10:26 pmYUL-ONT
15h 41m1 stop
$432United Airlines
Find Deal
Sun, May 25 - Wed, May 28
Air Canada Logo
6:00 am - 12:41 amONT-YUL
15h 41m2 stops
Air Canada Logo
4:05 pm - 8:53 pmYUL-ONT
7h 48m1 stop
$467Air Canada
Find Deal
Thu, May 15 - Sun, May 18
Delta Logo
7:05 am - 9:09 pmONT-YUL
11h 04m2 stops
Delta Logo
6:10 am - 4:17 pmYUL-ONT
13h 07m2 stops
$470Delta
Find Deal
Wed, May 14 - Sat, May 17
Air Canada Logo
5:05 am - 7:34 pmONT-YUL
11h 29m2 stops
Air Canada Logo
9:50 pm - 12:24 pmYUL-ONT
17h 34m2 stops
$472Air Canada
Find Deal
Tue, May 13 - Sun, May 18
Delta Logo
12:18 pm - 11:54 pmONT-YUL
8h 36m1 stop
Delta Logo
6:10 am - 4:17 pmYUL-ONT
13h 07m2 stops
$489Delta
Find Deal
Tue, May 13 - Sat, May 17
 Logo
11:29 am - 4:49 pmONT-YUL
26h 20m2 stops
 Logo
6:45 pm - 5:17 pmYUL-ONT
25h 32m3 stops
Thu, Sep 25 - Tue, Sep 30
 Logo
11:25 am - 12:37 amONT-YUL
34h 12m3 stops
 Logo
8:55 pm - 5:10 pmYUL-ONT
23h 15m3 stops
$1,158
Find Deal
Wed, Jun 18 - Sun, Jun 22
American Airlines Logo
11:59 pm - 2:50 pmONT-YUL
11h 51m1 stop
American Airlines Logo
12:59 pm - 9:33 pmYUL-ONT
11h 34m2 stops
$2,272American Airlines
Find Deal
Fri, Jun 13 - Mon, Jun 16
American Airlines Logo
11:59 pm - 4:44 pmONT-YUL
13h 45m2 stops
American Airlines Logo
12:59 pm - 9:33 pmYUL-ONT
11h 34m2 stops
$2,277American Airlines
Find Deal
Fri, Jun 13 - Mon, Jun 16
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KAYAK's insights & trends for Ontario to Montreal flights

Get data-powered insights and trends into flights from Ontario to Montreal to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to Montreal?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Montreal were found on United Airlines ($426) and Air Canada ($467).

Good to know

Low seasonOctober
High seasonMay
Cheapest flight$153
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 7% lower on average.
Flight from Ontario to Montreal

When to book flights from Ontario to Montreal

Are your dates flexible? Find out the best times to travel from Ontario to Montreal based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Ontario to Montreal flights

  • What is the cheapest flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

    In the last 3 days, the lowest price for a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport was $153 for a one-way ticket and $426 for a round-trip.

  • Do I need a passport to fly between Ontario and Montreal?

    Yes, you’ll need a passport to travel to Montreal from Ontario.

  • Which aircraft models fly most regularly from Ontario to Montreal?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Montreal?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Ontario and Montreal, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Montreal, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Montreal are Delta and United Airlines. With an average price for the route of $469 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $463 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Ontario to Montreal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Montreal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Montreal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Montreal from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Montreal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Montreal with an airline and back to Ontario with another airline. Booking your flights between Ontario and YUL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Montreal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Montreal from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 4 airlines serving from Ontario to Montreal

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Montreal. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Montreal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7934 reviews
7.9Comfort
8.2Boarding
7.9Entertainment
7.3Food
8.5Crew
Airline reviews

Delta flight was on time, seats were comfortable, and crew was nice.

8.0 ExcellentAnonymous, Apr 2025LAX - DEN
Read more Delta reviews

Delta flight was on time, seats were comfortable, and crew was nice.

Bathrooms dirty sinks clogged. No one seemed to clean them. Plane very old

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

New boarding doesn't make sense. Filling front first is slow.

Delta flight was great from the check in all the way to arrival. However, I had a very bad experience. I requested a wheelchair and the wheelchair employee that went to pick me up from the plane in Boston to bring me to the baggage claims told me I have to pay him. I was under the impression that it was a free service and I usually give tips but the person forced me to pay and since I said no because I was upset with his demand when my daughter walked in to pick me up he demanded payment from my daughter who paid him thinking maybe now it is a charged service.

Horrible. Grateful to be alive but spent 13 hours at airport only to return back to my familys house and flight changed to next day. They tried to fix a part on plane, had no back up plane and after 10 hours , reattempted the flight and it STILL wasn't fixed. We got a meal voucher and rescheduled flight but there should be some other compensation for the 15 hours spent in airport

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

The gate was too far away for the connecting flight

Compared with other carriers business class for an overnight was not worth the extra expense.

Seats were comfortable. It’s was so cold and very uncomfortable. I paid 2000 miles for wifi service that was choppy the whole flight. Would like to be reimbursed for my miles Food was so disappointing. Three cold and terrible meals for $3000 round trip. This needs to be better.

Easy to board. Flight was super crowded though so I didn't sleep well on that cross country red-eye flight. The aisles seem ot have gotten narrower and the seat smaller whn luggage and people are getting bigger so it would be AWESOME to have more space and breathing room in general ;)

Pilot Erika DeLong made us feel safe and at ease in a frankly scary time to be flying. Her warm smile and greeting and excellent command of the aircraft in foggy bumpy weather helped us all to calm our nerves and get us home safely.

Liked nothing. As per previous segment it was delay delay delay.

Plenty of room for me and the cat in Premium Economy. Seat was comfortable. Boarding was a breeze. The lady at the special check-in desk was great, super helpful and professional.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

British Airways staff are very polite and willing to help.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

Worst seats I’ve ever had !!! The seats were very narrow and uncomfortable and misaligned with the seats in front of mine leading to bottom of the seat in front of mine pressing on my legs for 15.5 hours !

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

The flight was quick and to the point. The crew just did their job w/o excessive talking and everything was just perfect.

Awkward carry on process. Forced to check all carry on. No overhead space of worthiness. Left delayed, but made up the time. Crew was amicable.

Amazingly comfy flight - I had upgraded for a reasonable price and it was worth it. The food also was good.

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

1. Nowhere to sit at the gate D4 2. No control of lining up in different zones 3. People pushing in during the line up of zones. 4. Certainly not in a dignified manner.

Air Canada was great! From the airport at Montreal to boarding to the food on board the plane. The crew was great too! There was a slight issue with some other peoples’ tickets that I overheard about but the crew handled with care immediately to ensure everyone was comfortable and we could takeoff! Great experience with Air Canada

The plane was dirty. It appeared that Air Canada did not know vacuum cleaners had been invented. Second, the overhead bins were about 1/3 or 1/2 the size of "normal" bins. That was a problem. The worst was disembarking in the weather in Montreal. I have cold agglutinin disease. That means my red blood cells clump together and then are destroyed when exposed, even by breathing to cold air. A few seconds of exposure can be dangerous. I am now experiencing extreme fatigue caused by the anemia from that experience. I should have had more assistance descending a narrow ramp and then traversing, even if only a few feet, of icy pavement. The blowing snow penetrated my facial covering and has caused problems.

Boarding could be improved, no need to wait after a previous group is completed

We boarded 1.5 hours late. Long wait for the bags when we got to Mexico City. Long wait to get on plane with people mover truck. Friendly staff. They answered all questions as best the could. Such a long, long walk from the plane to customs. Thank you, Michael A. Burris Cambridge, Massachusetts USA

Very good ! I would recommande it to my friend and family

the service was fine but would have which that the audio for announcement is better.

My first flight left so late we knew I would miss my connection. Rather than redirecting me then, they made me take a flight to Montreal, then Toronto (there was a flight leaving for Toronto when I was in NYC, no need for me to also go to montreal). Then they gave me a food voucher that did not work (4 places would not accept it). At least they gave me a hotel automatically, even though it was a cheap crappy one. I'm still not home, and it's been over 24 hours. I'm exhausted.

The boarding was at a dual gate hallway and there was only one spoken explanation about which way to turn to board the correct plane. It wasn't marked visually at the split in the gate. The phone charger did not work at my seat. The temperature was quite chilly throughout the flight and the recorded announcements were extremely loud for a small plane.

I was forced to check my carry-on bag, which I don't appreciate.

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