Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

ONT - YUL

$145 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 6/3. 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
0 bags
Fri 6/7
Fri 6/14

Search hundreds of travel sites at once for deals on flights to Montreal

 
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
In the last 7 days travelers have searched 43,968,530 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals from Ontario to Montreal (ONT-YUL)

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.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
1:47 pm - 7:10 amONT-YUL
14h 23m1 stop
4:45 pm - 10:45 pmYUL-ONT
9h 00m1 stop
$350United Airlines
Find Deal
Tue, Jul 9 - Sat, Jul 20
6:00 am - 6:53 pmONT-YUL
9h 53m2 stops
4:45 pm - 10:45 pmYUL-ONT
9h 00m1 stop
$359United Airlines
Find Deal
Tue, Jul 9 - Sat, Jul 20
10:59 pm - 3:17 pmONT-YUL
13h 18m2 stops
12:45 pm - 10:28 pmYUL-ONT
12h 43m1 stop
$374Delta
Find Deal
Tue, Sep 10 - Sat, Sep 14
10:59 pm - 3:17 pmONT-YUL
13h 18m2 stops
7:00 am - 10:28 pmYUL-ONT
18h 28m2 stops
$379Delta
Find Deal
Tue, Sep 10 - Sat, Sep 14
7:23 pm - 10:29 amONT-YUL
12h 06m2 stops
3:50 pm - 9:56 amYUL-ONT
21h 06m1 stop
$424American Airlines
Find Deal
Fri, Aug 23 - Sun, Aug 25
11:59 pm - 2:50 pmONT-YUL
11h 51m1 stop
11:00 am - 6:22 pmYUL-ONT
10h 22m2 stops
$461American Airlines
Find Deal
Tue, May 28 - Fri, May 31
6:03 am - 7:10 amONT-YUL
22h 07m1 stop
8:00 pm - 12:45 pmYUL-ONT
19h 45m1 stop
Sat, Jun 22 - Tue, Jun 25
5:15 am - 5:02 pmONT-YUL
8h 47m1 stop
8:10 am - 5:17 pmYUL-ONT
12h 07m1 stop
$632Air Canada
Find Deal
Thu, Oct 3 - Wed, Oct 9
6:20 pm - 5:02 pmONT-YUL
19h 42m1 stop
6:15 pm - 9:58 amYUL-ONT
18h 43m1 stop
Fri, Oct 4 - Sun, Oct 6
7:18 am - 8:30 pmONT-YUL
10h 12m1 stop
6:15 pm - 9:58 amYUL-ONT
18h 43m1 stop
$915Air Canada
Find Deal
Fri, Oct 4 - Sun, Oct 6

Flights from Ontario to Montreal - Travel Insights & Trends

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.

What is the cheapest month to fly from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport is February, where tickets cost $249 on average. On the other hand, the most expensive months are July and December, where the average cost of tickets is $626 and $591 respectively.

How far in advance should I book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 62 days before departure.

Which airlines provide the cheapest flights from Ontario to Montreal?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Ontario to Montreal found on KAYAK was with American Airlines for $145. United Airlines proposed a round-trip connection from $350 and Delta from $374.

Good to know

Low season

March

High season

April

Cheapest flight

$145
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 8% 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 $145 for a one-way ticket and $350 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?

    oneworld, SkyTeam, and Star Alliance 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 American Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Montreal are Delta and American Airlines. With an average price for the route of $628 and an overall rating of 8.0, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $541 and an overall rating of 7.3.

  • 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.

See more FAQs

Top airlines flying 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 10789 reviews
8.2Boarding
8.6Crew
7.9Comfort
8.0Entertainment
7.4Food
Airline reviews

There was a loud squeaky sound the whole time we were flying.

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

There was a loud squeaky sound the whole time we were flying.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

You need to be a hacker to get the (Free) WiFi

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

Not sure why JAL partnered with American Airlines because their service is no where near similar. Flight attendants were not friendly and didn’t smile. Food was horrible…

The experience was great and much better than the flight going out. of course I was in first class but the service was excellent

Comfort of seats, ease of boarding. Food selection could be better

Food options were limited which is absolutely embarrassing for a Flight of this size The staff did not come around as much and I am not accustomed to such poor service from American Airlines Drinks I believe were limited to soda and water

Crew were attentive and friendly. Flight was smooth and early! I enjoyed the less crowded plane. Thank you!

We are gluten free, there were not any available complimentary gluten free options.

No meal on a cross country flight? SFO-MiA is pretty much the definition of a coast to coast flight. No meal provided. Sky high wi-fi rates too. Stop nickel and diming your customers.

The staff was unprofessional and didn’t communicate very well. The boarding process was very disheveled, potentially due to a power outage the previous day but there was no contingency plan to properly get passengers boarded the following day. Once boarded the aircraft stayed on the tarmac for over 45 minutes due to high winds. The communication was sporadic but an announcement was finally made an additional 30 minutes later that the flight was cancelled but we couldn’t get off the plane. Prior to deplaning one of the gate agents came on the plane and made an announcement for everyone to pickup their checked bags and take a card to rebook a new reservation because they didn’t have adequate staff. Flights were missed, passengers went to different airports and there was little to no assistance from AA.

You cancelled my flight by email then made it very difficult to get in contact with you. Then put me in a flight with a long layover in Mexico returning to the wrong airport in uk. Mind blowing my stressful. I missed see my grand dad because of you.

Book cheap flights from Ontario to Montreal

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Ontario to Montreal found on KAYAK in the last 72 hours.
6/3Mon
1 stopAmerican Airlines
11h 51mONT-YUL
$145
6/1Sat
1 stopDelta
8h 09mONT-YUL
$152
7/23Tue
1 stopDelta
8h 41mONT-YUL
$153
6/7Fri
2 stopsDelta
15h 10mONT-YUL
$158
7/22Mon
1 stopDelta
10h 41mONT-YUL
$183
8/27Tue
1 stopKLM
7h 51mONT-YUL
$194
8/25Sun
1 stopAmerican Airlines
12h 00mONT-YUL
$205
8/22Thu
1 stopUnited Airlines
7h 57mONT-YUL
$396
5/21Tue
1 stopUnited Airlines
8h 54mONT-YUL
$416
8/29Thu
2 stopsAvianca
19h 35mONT-YUL
$541

Search by stops

Search by airline

Search by price

Last minute flights from Ontario to Montreal

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Ontario to Montreal that are departing in the next 10 days.
5/11Sat
multi-stopDelta
8h 09mONT-YUL
5/20Mon
multi-stopDelta
16h 56mYUL-ONT
$597
5/11Sat
multi-stopAir Canada
9h 00mONT-YUL
5/17Fri
multi-stopAir Canada
9h 19mYUL-ONT
$614
5/10Fri
multi-stopDelta
15h 45mONT-YUL
5/16Thu
multi-stopDelta
16h 56mYUL-ONT
$652
5/11Sat
multi-stopDelta
8h 09mONT-YUL
5/20Mon
multi-stopDelta
12h 03mYUL-ONT
$658
5/13Mon
multi-stopAmerican Airlines
11h 45mONT-YUL
5/16Thu
multi-stopAmerican Airlines
20h 53mYUL-ONT
$664
5/13Mon
multi-stopDelta
11h 29mONT-YUL
5/16Thu
multi-stopDelta
12h 03mYUL-ONT
$665
5/10Fri
multi-stopUnited Airlines
13h 06mONT-YUL
5/17Fri
multi-stopUnited Airlines
9h 19mYUL-ONT
$670
5/10Fri
multi-stopAir Canada
9h 00mONT-YUL
5/16Thu
multi-stopAir Canada
9h 19mYUL-ONT
$847
5/9Thu
multi-stopUnited Airlines
13h 06mONT-YUL
5/10Fri
multi-stopUnited Airlines
9h 19mYUL-ONT
$877
5/10Fri
multi-stopAmerican Airlines
21h 00mONT-YUL
5/17Fri
multi-stopAmerican Airlines
14h 30mYUL-ONT
$1,001

Search by stops

Search by airline

Search by price

Ontario - Montreal Flights

Departure:

Ontario (undefined)United States

Destination:

Montreal (YUL)Canada

Return flight deals:

Montreal - Ontario

Cabin classes: