What are the cheapest airlines to fly from Ontario to Montreal Pierre Elliott Trudeau Intl Airport one-way?

$246 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Air Canada, with prices starting from $293 and $521, respectively.

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

Travelers seeking maximum savings on their Ontario to Montreal Pierre Elliott Trudeau Intl Airport flight should consider departing on Saturday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

What are the most popular airlines that fly from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

Before booking your flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport check out the most popular airlines for this route: Air Canada, Delta or United Airlines.

What is the cheapest day to fly round-trip from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

Wednesday flights are generally found to be more expensive for flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Montreal Pierre Elliott Trudeau Intl Airport.

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

The best pricing can be found in the month of March. Prices to Montreal Pierre Elliott Trudeau Intl Airport from Ontario average $447. You can even find prices in March for less than $447, as users have found deals to Montreal Pierre Elliott Trudeau Intl Airport from as low as $127. The month of December appears to be one of the more expensive times to travel to Montreal Pierre Elliott Trudeau Intl Airport from Ontario. Flying in the targeted month can save you up to 62%.

What airport do you fly from for flights from Ontario to Montreal Pierre Elliott Trudeau Intl?

Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Montreal Pierre Elliott Trudeau Intl. 3 airlines have flights from Ontario to Montreal Pierre Elliott Trudeau Intl on a regular basis. Booking flights from Ontario to Montreal Pierre Elliott Trudeau Intl should not be difficult; the airport handles an average of 0 outbound flights to Montreal Pierre Elliott Trudeau Intl per day.

How can I find direct flights from Ontario to Pierre Elliott Trudeau Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Pierre Elliott Trudeau Intl.

Can I find deals for business class flights from Ontario to Pierre Elliott Trudeau Intl?

Yes. Cheapflights offers flight deals from Ontario to Pierre Elliott Trudeau Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$186+ Flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport

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

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 42 days in advance, which can save you up to 65% on flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport compared to booking the week you need them. Waiting 42 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $242. For sooner than that we have options available in the next 3 days from $485.

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Cheap flight deals from Ontario to Pierre Elliott Trudeau Intl

Round-trip from	$365 (American Airlines)
One-way from	$186 (Trip.com)
Popular in	January
Cheapest in	October
Average price	$490

From Ontario to Montreal Pierre Elliott Trudeau Intl

Search Deals

One-way flight from Ontario to Montreal Pierre Elliott Trudeau Intl

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Highest demand for flights based on searches. 24% potential increase in price ($164 potential increase over avg. RT price).

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Cheapest flight prices on average. 9% potential price decrease ($44 potential savings vs. average RT price).

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Average for round-trip flights in June 2025

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Find flight deals from Ontario to Pierre Elliott Trudeau Intl

Cheapest flights from Ontario to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Ontario to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Tue 9/212:22 pmONT - YUL

2 stops20h 23mAmerican Airlines

Wed 9/33:44 pmYUL - ONT

2 stops23h 12mAmerican Airlines

Deal found 6/10

$365

Tue 7/1510:05 pmONT - YUL

2 stops20h 23mDelta

Wed 7/236:00 amYUL - ONT

2 stops19h 27mDelta

Deal found 6/12

$517

Tue 9/26:50 pmONT - YUL

2 stops17h 36mUnited Airlines

Wed 9/36:30 pmYUL - ONT

1 stop20h 43mUnited Airlines

Deal found 6/10

$620

Thu 8/286:00 amONT - YUL

1 stop11h 05mMultiple Airlines

Tue 9/28:05 amYUL - ONT

1 stop15h 28mMultiple Airlines

Deal found 6/10

$710

Fri 8/296:38 pmONT - YUL

2 stops16h 14mAir Canada

Sat 8/304:05 pmYUL - ONT

1 stop7h 38mAir Canada

Deal found 6/10

$737

Best flights from Ontario to Pierre Elliott Trudeau Intl
Discover carefully curated flight deals from Ontario to Pierre Elliott Trudeau Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 12, 2025.

Tue 9/212:22 pmONT - YUL

2 stops20h 23mAmerican Airlines

Wed 9/33:44 pmYUL - ONT

2 stops23h 12mAmerican Airlines

Deal found 6/10

$365

Mon 9/2210:59 pmONT - YUL

2 stops14h 07mDelta

Thu 9/257:00 amYUL - ONT

2 stops15h 42mDelta

Deal found 6/12

$513

Tue 9/26:50 pmONT - YUL

2 stops17h 36mUnited Airlines

Wed 9/36:30 pmYUL - ONT

1 stop20h 43mUnited Airlines

Deal found 6/10

$620

Thu 8/286:00 amONT - YUL

1 stop11h 05mMultiple Airlines

Tue 9/28:05 amYUL - ONT

1 stop15h 28mMultiple Airlines

Deal found 6/10

$710

Fri 8/296:38 pmONT - YUL

2 stops16h 14mAir Canada

Sat 8/304:05 pmYUL - ONT

1 stop7h 38mAir Canada

Deal found 6/10

$737

Last-minute flights from Ontario to Pierre Elliott Trudeau Intl
Discover last-minute flight deals from Ontario to Pierre Elliott Trudeau Intl. Data last updated June 12, 2025 and is based on user searches.

Thu 6/196:00 amONT - YUL

2 stops25h 40mUnited Airlines

Mon 6/234:45 pmYUL - ONT

1 stop22h 29mUnited Airlines

Deal found 6/10

$719

Thu 6/1912:59 amONT - YUL

2 stops12h 46mAmerican Airlines

Tue 7/87:29 amYUL - ONT

1 stop17h 09mAmerican Airlines

Deal found 6/11

$805

Fri 6/2010:05 pmONT - YUL

2 stops33h 03mDelta

Tue 6/2411:00 amYUL - ONT

2 stops14h 25mDelta

Deal found 6/12

$732

Sat 6/215:10 amONT - YUL

1 stop15h 16mAir Canada

Fri 6/278:05 amYUL - ONT

1 stop15h 49mAir Canada

Deal found 6/10

$862

Fri 7/45:05 amONT - YUL

2 stops13h 39mUnited Airlines

Thu 7/108:05 amYUL - ONT

1 stop12h 38mUnited Airlines

Deal found 6/12

$674

Fri 7/45:05 amONT - YUL

1 stop7h 21mAir Canada

Fri 7/118:05 amYUL - ONT

1 stop17h 47mAir Canada

Deal found 6/12

$800

Wed 7/97:05 pmONT - YUL

2 stops13h 35mAmerican Airlines

Sat 7/127:29 amYUL - ONT

1 stop17h 09mAmerican Airlines

Deal found 6/12

$673

Tue 7/1510:05 pmONT - YUL

2 stops20h 23mDelta

Wed 7/236:00 amYUL - ONT

2 stops19h 27mDelta

Deal found 6/12

$517

Tue 7/156:10 amONT - YUL

1 stop10h 55mMultiple Airlines

Fri 7/188:05 amYUL - ONT

1 stop15h 49mMultiple Airlines

Deal found 6/11

$747

One-way flights from Ontario to Pierre Elliott Trudeau Intl
Search for one-way flight options from Ontario to Pierre Elliott Trudeau Intl. Find affordable one-way fares based on user searches. Data last updated June 12, 2025.

Thu 7/36:00 amONT - YUL

2 stops12h 17mMultiple Airlines

Deal found 6/10

$186

Fri 7/46:23 amONT - YUL

2 stops30h 01mAmerican Airlines

Deal found 6/12

$246

Wed 9/241:42 pmONT - YUL

1 stop15h 34mUnited Airlines

Deal found 6/11

$293

Wed 6/185:10 amONT - YUL

2 stops10h 11mAir Canada

Deal found 6/10

$521

Mon 6/3011:49 amONT - YUL

2 stops9h 48mDelta

Deal found 6/10

$537

Thu 9/2511:25 pmONT - YUL

2 stops19h 40mAvianca

Deal found 6/11

$623

Thu 6/196:25 amONT - YUL

2 stops21h 43mWestJet

Deal found 6/12

$968

Cheapflights Fare Finder

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

Tue 9/2

12:22 pm-11:45 am

2 stops20h 23m

Montreal Pierre Elliott Trudeau Intl

Wed 9/3

3:44 pm-11:56 am

2 stops23h 12m

$365

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 7/15

10:05 pm-9:28 pm

2 stops20h 23m

Montreal Pierre Elliott Trudeau Intl

Wed 7/23

6:00 am-10:27 pm

2 stops19h 27m

$517

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 9/2

6:50 pm-3:26 pm

2 stops17h 36m

Montreal Pierre Elliott Trudeau Intl

Wed 9/3

6:30 pm-12:13 pm

1 stop20h 43m

$620

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 8/28

6:00 am-8:05 pm

1 stop11h 05m

Montreal Pierre Elliott Trudeau Intl

Tue 9/2

8:05 am-8:33 pm

1 stop15h 28m

$710

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Fri 8/29

6:38 pm-1:52 pm

2 stops16h 14m

Montreal Pierre Elliott Trudeau Intl

Sat 8/30

4:05 pm-8:43 pm

1 stop7h 38m

$737

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Thu 7/3

6:00 am-9:17 pm

2 stops12h 17m

$186

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Fri 7/4

6:23 am-3:24 pm

2 stops30h 01m

$246

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Tue 9/9

1:42 pm-8:16 am

1 stop15h 34m

$293

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Wed 6/18

5:10 am-6:21 pm

2 stops10h 11m

$521

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

Mon 6/30

11:49 am-12:37 am

2 stops9h 48m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 12 results

Best time to book a flight from Ontario to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from Ontario with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport

What is the cheapest month to book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport (average of $270). Flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport in July is currently the most expensive (average of $409). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to YUL?

One of the essential ways to save on airfare from Ontario to Montreal Pierre Elliott Trudeau Intl Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 19% on airfare.

Rainfall in Pierre Elliott Trudeau Intl by month

In terms of precipitation, rainfall in Montreal Pierre Elliott Trudeau Intl Airport ranges from 2.5 - 4.4 inches per month. August is typically the wettest month, when rainfall can reach 4.4 in. February is typically the driest time to visit Montreal Pierre Elliott Trudeau Intl Airport when rainfall is around 2.5 in.

Temperature in Pierre Elliott Trudeau Intl by month

If weather is an important factor for your trip to Montreal Pierre Elliott Trudeau Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 15.8 F).

Reviews of airlines servicing Pierre Elliott Trudeau Intl

See what other customers who have flown with Delta, United Airlines and American Airlines from Ontario to Montreal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

7,946 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,790 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

WestJet

7.2

Good

2,868 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Canada

7.1

Good

9,537 reviews

Delta

8.0

Very good

7,946 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What airport do you fly from for flights from Ontario to Montreal Pierre Elliott Trudeau Intl?
Ontario (ONT), located 3.1 mi from the city center, is the airport you fly out of when you book flights from Ontario to Montreal Pierre Elliott Trudeau Intl. 3 airlines have flights from Ontario to Montreal Pierre Elliott Trudeau Intl on a regular basis. Booking flights from Ontario to Montreal Pierre Elliott Trudeau Intl should not be difficult; the airport handles an average of 0 outbound flights to Montreal Pierre Elliott Trudeau Intl per day.
What are the cheapest airlines flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport round-trip?
American Airlines, at $365, was found to be the cheapest airline from Ontario to Montreal Pierre Elliott Trudeau Intl Airport.Alternate airlines to your destination round-trip include Delta and United Airlines. You may be able to fly from Ontario to Montreal Pierre Elliott Trudeau Intl Airport for 27% less than the average price by searching for these airlines.
What are the cheapest airlines to fly from Ontario to Montreal Pierre Elliott Trudeau Intl Airport one-way?
$246 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Air Canada, with prices starting from $293 and $521, respectively.
Can I find deals for flights from Ontario to Pierre Elliott Trudeau Intl that include hotel bookings?
Yes. In addition to deals on Ontario to Pierre Elliott Trudeau Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Pierre Elliott Trudeau Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Pierre Elliott Trudeau Intl.
Can I find deals for business class flights from Ontario to Pierre Elliott Trudeau Intl?
Yes. Cheapflights offers flight deals from Ontario to Pierre Elliott Trudeau Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport (average of $270). Flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport in July is currently the most expensive (average of $409). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Longueuil

Sherbrooke

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Top 3 airlines flying from Ontario to Pierre Elliott Trudeau Intl

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$176	Average$422	FlexibilityNo cancel fee	On-time67%
United Airlines	Cheapest$219	Average$419	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$347	Average$439	FlexibilityNo cancel fee	On-timeN/A

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$186+ Cheap flights from Ontario (ONT) to Pierre Elliott Trudeau Intl (YUL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/3. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Pierre Elliott Trudeau Intl with Cheapflights

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3. Compare prices and book

Cheap flight deals from Ontario to Pierre Elliott Trudeau Intl

Round-trip from

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Cheapest in

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Find flight deals from Ontario to Pierre Elliott Trudeau Intl

Cheapest flights from Ontario to Pierre Elliott Trudeau IntlExplore the most affordable flight options available from Ontario to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Explore the most affordable flight options available from Ontario to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Best time to book a flight from Ontario to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from Ontario with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport

What is the cheapest month to book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

What is the cheapest time of day to fly from ONT to YUL?

Find hourly flight availability from Ontario to Pierre Elliott Trudeau Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 12, 2025.

Rainfall in Pierre Elliott Trudeau Intl by month

Plan your trip to Pierre Elliott Trudeau Intl by taking into account the average rainfall totals by month.

Temperature in Pierre Elliott Trudeau Intl by month

Plan your trip to Pierre Elliott Trudeau Intl by taking into account the average temperature totals by month.

Reviews of airlines servicing Pierre Elliott Trudeau Intl

See what other customers who have flown with Delta, United Airlines and American Airlines from Ontario to Montreal have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Pierre Elliott Trudeau Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Ontario to Montreal Pierre Elliott Trudeau Intl?

What are the cheapest airlines flying from Ontario to Montreal Pierre Elliott Trudeau Intl Airport round-trip?

What are the cheapest airlines to fly from Ontario to Montreal Pierre Elliott Trudeau Intl Airport one-way?

Can I find deals for flights from Ontario to Pierre Elliott Trudeau Intl that include hotel bookings?

How can I find direct flights from Ontario to Pierre Elliott Trudeau Intl?

Can I find deals for business class flights from Ontario to Pierre Elliott Trudeau Intl?

What is the cheapest month to book a flight from Ontario to Montreal Pierre Elliott Trudeau Intl Airport?

Traveling to a place near Ontario?

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Alternative routes for Ontario to Pierre Elliott Trudeau Intl

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Ontario to Pierre Elliott Trudeau Intl

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Cheapest flights from Ontario to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Ontario to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.