$286 Cheap Flights from Montreal (YUL) to Ontario (ONT)

View $286 flight on Tue, Dec 9, 2025Opens in a new window

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

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Cheap Flights from Montreal to Ontario (YUL-ONT)

Prices were available within the past 7 days and start at $286 for one-way flights and $608 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Dec 2 - Mon, Dec 15
YUL
Montreal
ONT
Ontario
$608 Roundtrip, found 3 days ago
$608
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 2 from Montreal to Ontario, returning Mon, Dec 15, priced at $608 found 3 days ago
American Airlines
Tue, Dec 2 - Mon, Dec 15
YUL
Montreal
ONT
Ontario
$613 Roundtrip, found 3 days ago
$613
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 2 from Montreal to Ontario, returning Mon, Dec 15, priced at $613 found 3 days ago
American Airlines
Tue, Dec 2 - Mon, Dec 15
YUL
Montreal
ONT
Ontario
$613 Roundtrip, found 3 days ago
$613
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 2 from Montreal to Ontario, returning Mon, Dec 15, priced at $613 found 3 days ago
American Airlines
Tue, Dec 2 - Mon, Dec 15
YUL
Montreal
ONT
Ontario
$618 Roundtrip, found 3 days ago
$618
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 2 from Montreal to Ontario, returning Mon, Dec 15, priced at $618 found 3 days ago
Delta
Tue, Dec 2 - Mon, Dec 15
YUL
Montreal
ONT
Ontario
$642 Roundtrip, found 3 days ago
$642
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Dec 2 from Montreal to Ontario, returning Mon, Dec 15, priced at $642 found 3 days ago
American Airlines
Tue, Dec 2 - Mon, Dec 15
YUL
Montreal
ONT
Ontario
$646 Roundtrip, found 3 days ago
$646
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Dec 2 from Montreal to Ontario, returning Mon, Dec 15, priced at $646 found 3 days ago
Air Canada
Tue, Dec 2 - Mon, Dec 15
YUL
Montreal
ONT
Ontario
$648 Roundtrip, found 3 days ago
$648
Roundtrip
found 3 days ago
Select Air Canada flight, departing Tue, Dec 2 from Montreal to Ontario, returning Mon, Dec 15, priced at $648 found 3 days ago
United
Tue, Dec 2 - Mon, Dec 15
YUL
Montreal
ONT
Ontario
$652 Roundtrip, found 3 days ago
$652
Roundtrip
found 3 days ago
Select United flight, departing Tue, Dec 2 from Montreal to Ontario, returning Mon, Dec 15, priced at $652 found 3 days ago
American Airlines
Tue, Dec 16 - Tue, Dec 30
YUL
Montreal
ONT
Ontario
$660 Roundtrip, found 20 hours ago
$660
Roundtrip
found 20 hours ago
Select American Airlines flight, departing Tue, Dec 16 from Montreal to Ontario, returning Tue, Dec 30, priced at $660 found 20 hours ago
Delta
Tue, Dec 2 - Mon, Dec 15
YUL
Montreal
ONT
Ontario
$660 Roundtrip, found 3 days ago
$660
Roundtrip
found 3 days ago
Select Delta flight, departing Tue, Dec 2 from Montreal to Ontario, returning Mon, Dec 15, priced at $660 found 3 days ago

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

November is typically the cheapest month to fly

From $287 - $1,435 per traveler.

Alternative airports near Ontario

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

Select flight to John Wayne SNA. Cheapest option available. Average driving time to city center is 42 minutes. Flights from $401
SNA
John Wayne
Cheapest
Average driving time to city center42 min
Flights from $401

Frequently asked questions

How much does a flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Los Angeles - Ontario Intl. Airport (ONT) cost?
Secure a cheap one-way flight from $286 or cheap return flight from $608 from Pierre Elliott Trudeau Intl. Airport (YUL) to Los Angeles - Ontario Intl. Airport (ONT) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Pierre Elliott Trudeau Intl. Airport (YUL) to Los Angeles - Ontario Intl. Airport (ONT)?
December is the cheapest month to fly from YUL to ONT. Traveling during an off-peak travel window is often the key to better flight prices.
What is the cheapest airline that flies from Pierre Elliott Trudeau Intl. Airport (YUL) to Los Angeles - Ontario Intl. Airport (ONT)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest YUL to ONT flight.
How many flights per day from Pierre Elliott Trudeau Intl. Airport (YUL) to Los Angeles - Ontario Intl. Airport (ONT)?
You'll have to take a flight with a layover if you're traveling from Pierre Elliott Trudeau Intl. Airport (YUL) to Los Angeles - Ontario Intl. Airport (ONT). There are no daily direct flights on this route. However, simply filter your search to include one or two stops to find an option that works for you.
What day of the week has the most flights from YUL to ONT?
Typically you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Pierre Elliott Trudeau Intl. Airport (YUL) to Los Angeles - Ontario Intl. Airport (ONT)?
Opt for a flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Los Angeles - Ontario Intl. Airport (ONT) that takes off before 3 PM to reduce the risk of cancellations and delays. Later departures have a 22% higher chance of being canceled, on average.**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.
What airports do you fly into for Ontario from Pierre Elliott Trudeau Intl. Airport (YUL)?
If you've booked a direct flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Ontario, Los Angeles Intl. Airport (LAX) is the only airport you can land at.
Is it cheaper to buy a plane ticket from Pierre Elliott Trudeau Intl. Airport (YUL) to Los Angeles - Ontario Intl. Airport (ONT) last-minute?
Last-minute bookings from YUL to ONT are generally more expensive. To lock in the lowest prices, start searching for flights well ahead of time. That said, if you're flexible with your travel dates, it's possible to find a cheap fare just before your departure.
Is it cheaper to book a YUL to ONT flight and hotel package?
Compared with arranging flights and hotels separately, booking a YUL to ONT flight and hotel package with Expedia could lead to significant savings. What's more, managing everything in one place will take the hassle out of planning your trip. Just pick your flights and choose from our wide range of stays, then tailor your trip with other add-ons like activities and car rentals.
Can I cancel or change the date of my flight from Pierre Elliott Trudeau Intl. Airport (YUL) to Los Angeles - Ontario Intl. Airport (ONT)?
If you booked your YUL to ONT flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

Travel information

Origin airport
Pierre Elliott Trudeau Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Air Canada, American Airlines, Delta, United
Roundtrip price
$608
Distance
2423 mi

Book with confidence

Montreal to Ontario Flights

The cheapest times to fly from Montreal to Ontario

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 Montreal to Ontario are during the month of December. You can find some of the cheapest flights from Montreal to Ontario with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Montreal to Ontario

Sunday is one of the best days to book for cheap flights from Montreal to Ontario: 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 Montreal to Ontario

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 Montreal to Ontario in 2025. You can also book with separate airlines for your outbound and return journeys, from $286 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 Montreal to Ontario 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 Montreal to Ontario 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.

 

Montreal to Ontario Flights

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*Available to One Key members.