$212 Cheap Flights from Ontario (ONT) to Montreal (YUL)

View $212 flight on Tue, Aug 26, 2025Opens in a new window

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Montreal–Trudeau Intl. Airport (YUL)

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Cheap Flights from Ontario to Montreal (ONT-YUL)

Prices were available within the past 7 days and start at $212 for one-way flights and $502 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Aug 30 - Thu, Sep 4
ONT
Ontario
YUL
Montreal
$502 Roundtrip, found 14 hours ago
$502
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Sat, Aug 30 from Ontario to Montreal, returning Thu, Sep 4, priced at $502 found 14 hours ago
Delta
Fri, Oct 10 - Tue, Oct 14
ONT
Ontario
YUL
Montreal
$544 Roundtrip, found 13 hours ago
$544
Roundtrip
found 13 hours ago
Select Delta flight, departing Fri, Oct 10 from Ontario to Montreal, returning Tue, Oct 14, priced at $544 found 13 hours ago
American Airlines
Wed, Sep 10 - Mon, Sep 15
ONT
Ontario
YUL
Montreal
$548 Roundtrip, found 15 hours ago
$548
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Wed, Sep 10 from Ontario to Montreal, returning Mon, Sep 15, priced at $548 found 15 hours ago
American Airlines
Tue, Sep 30 - Sat, Oct 4
ONT
Ontario
YUL
Montreal
$551 Roundtrip, found 3 days ago
$551
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Sep 30 from Ontario to Montreal, returning Sat, Oct 4, priced at $551 found 3 days ago
American Airlines
Thu, Nov 6 - Tue, Nov 11
ONT
Ontario
YUL
Montreal
$568 Roundtrip, found 2 days ago
$568
Roundtrip
found 2 days ago
Select American Airlines flight, departing Thu, Nov 6 from Ontario to Montreal, returning Tue, Nov 11, priced at $568 found 2 days ago
American Airlines
Sat, Aug 30 - Thu, Sep 4
ONT
Ontario
YUL
Montreal
$570 Roundtrip, found 14 hours ago
$570
Roundtrip
found 14 hours ago
Select American Airlines flight, departing Sat, Aug 30 from Ontario to Montreal, returning Thu, Sep 4, priced at $570 found 14 hours ago
American Airlines
Tue, Sep 23 - Mon, Oct 6
ONT
Ontario
YUL
Montreal
$575 Roundtrip, found 5 days ago
$575
Roundtrip
found 5 days ago
Select American Airlines flight, departing Tue, Sep 23 from Ontario to Montreal, returning Mon, Oct 6, priced at $575 found 5 days ago
United
Sat, Sep 20 - Tue, Sep 23
ONT
Ontario
YUL
Montreal
$583 Roundtrip, found 22 hours ago
$583
Roundtrip
found 22 hours ago
Select United flight, departing Sat, Sep 20 from Ontario to Montreal, returning Tue, Sep 23, priced at $583 found 22 hours ago
Air Canada
Sat, Sep 20 - Mon, Sep 22
ONT
Ontario
YUL
Montreal
$888 Roundtrip, found 9 hours ago
$888
Roundtrip
found 9 hours ago
Select Air Canada flight, departing Sat, Sep 20 from Ontario to Montreal, returning Mon, Sep 22, priced at $888 found 9 hours ago
WestJet
Thu, Aug 7 - Tue, Aug 12
ONT
Ontario
YUL
Montreal
$2,057 Roundtrip, found 8 hours ago
$2,057
Roundtrip
found 8 hours ago
Select WestJet flight, departing Thu, Aug 7 from Ontario to Montreal, returning Tue, Aug 12, priced at $2,057 found 8 hours ago

Find the cheapest month to fly from Ontario (ONT) to Montreal (YUL)

November is typically the cheapest month to fly

From $315 - $1,510 per traveler.

Graph displaying average flight prices per month

Alternative airports near Montreal

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Pierre Elliott Trudeau Intl. YUL. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $818
YUL
Pierre Elliott Trudeau Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $818
Flights from Ontario (ONT) to Montreal (YUL)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Pierre Elliott Trudeau Intl.
Airlines serving
Air Canada, American Airlines, Delta, United, WestJet
Roundtrip price
$501
Distance
2423 mi

Ontario to Montreal Flights

The cheapest times to fly from Ontario to Montreal

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Ontario to Montreal are during the month of August. You can find some of the cheapest flights from Ontario to Montreal with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Ontario to Montreal

Sunday is one of the best days to book for cheap flights from Ontario to Montreal: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Ontario to Montreal

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Ontario to Montreal in 2025. You can also book with separate airlines for your outbound and return journeys, from $212 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Ontario to Montreal flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Ontario to Montreal airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Los Angeles - Ontario Intl. Airport (ONT) to Pierre Elliott Trudeau Intl. Airport (YUL) cost?
Discover the latest flight deals from ONT to YUL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from ONT to YUL?
The cheapest flights from ONT to YUL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Los Angeles - Ontario Intl. Airport (ONT) to Pierre Elliott Trudeau Intl. Airport (YUL)?
There aren't any direct flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to Pierre Elliott Trudeau Intl. Airport (YUL). However, you'll find other airports offering nonstop flights. Begin your journey at Los Angeles Intl. Airport (LAX) and travel straight to Montreal without a layover.
What is the cheapest airline that flies from ONT to YUL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from ONT to YUL. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Los Angeles - Ontario Intl. Airport (ONT) to Pierre Elliott Trudeau Intl. Airport (YUL)?
There are no daily nonstop flights from Los Angeles - Ontario Intl. Airport (ONT) to Pierre Elliott Trudeau Intl. Airport (YUL). But you can opt for flights with layovers. Filter your search results on Expedia to include one or two stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from ONT to YUL?
You'll typically find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles - Ontario Intl. Airport (ONT) to Pierre Elliott Trudeau Intl. Airport (YUL)?
Book a flight from Los Angeles - Ontario Intl. Airport (ONT) to Pierre Elliott Trudeau Intl. Airport (YUL) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Los Angeles - Ontario Intl. Airport (ONT) to Pierre Elliott Trudeau Intl. Airport (YUL) last-minute?
Booking your flight from ONT to YUL shortly before your getaway is generally more expensive. But if you're flexible with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book an ONT to YUL flight and hotel package?
You'll generally save money by securing an ONT to YUL flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After selecting your preferred flights and accommodations, you can add extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Los Angeles - Ontario Intl. Airport (ONT) to Pierre Elliott Trudeau Intl. Airport (YUL)?
In most instances, you can modify or cancel your ONT to YUL flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you want more details, visit our Customer Service portal.

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*Available to One Key members.