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

$207 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 Delta, with prices starting from $290 and $293, 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.

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.

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).

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 $448. You can even find prices in March for less than $448, 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.

$207+ 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 106% 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 $302. For sooner than that we have options available in the next 3 days from $485.

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to Pierre Elliott Trudeau Intl

Round-trip from	$544 (American Airlines)
One-way from	$207 (American Airlines)
Popular in	January
Cheapest in	October
Average price	$600

From Ontario to Montreal Pierre Elliott Trudeau Intl

Search Deals

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

Search Deals

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

Search Deals

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

Search Deals

Average for round-trip flights in July 2025

Search Deals

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 julio 1, 2025.

mar. 8/126:17 amONT - YUL

2 stops13h 18mAmerican Airlines

mar. 8/1912:30 pmYUL - ONT

2 stops13h 18mAmerican Airlines

Deal found 6/30

$544

jue. 7/105:14 pmONT - YUL

2 stops19h 56mMultiple Airlines

mié. 7/161:20 pmYUL - ONT

2 stops22h 49mMultiple Airlines

Deal found 6/30

$596

mar. 7/811:40 amONT - YUL

1 stop9h 15mDelta

mar. 7/2211:00 amYUL - ONT

2 stops14h 27mDelta

Deal found 7/1

$644

dom. 10/125:05 amONT - YUL

1 stop7h 21mUnited Airlines

jue. 10/164:45 pmYUL - ONT

1 stop8h 57mUnited Airlines

Deal found 6/30

$673

jue. 7/106:39 pmONT - YUL

1 stop10h 37mAir Canada

mié. 7/168:05 amYUL - ONT

1 stop12h 38mAir Canada

Deal found 6/30

$686

lun. 7/76:39 pmONT - YUL

1 stop10h 37mLufthansa

dom. 7/134:55 pmYUL - ONT

1 stop8h 11mLufthansa

Deal found 6/30

$867

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 julio 1, 2025.

mar. 8/126:17 amONT - YUL

2 stops13h 18mAmerican Airlines

mar. 8/1912:30 pmYUL - ONT

2 stops13h 18mAmerican Airlines

Deal found 6/30

$544

dom. 10/125:05 amONT - YUL

1 stop7h 21mUnited Airlines

jue. 10/164:45 pmYUL - ONT

1 stop8h 57mUnited Airlines

Deal found 6/30

$673

jue. 8/146:10 amONT - YUL

1 stop10h 55mMultiple Airlines

jue. 8/211:20 pmYUL - ONT

1 stop12h 10mMultiple Airlines

Deal found 6/29

$703

sáb. 12/275:40 amONT - YUL

2 stops12h 21mAir Canada

sáb. 1/38:30 amYUL - ONT

2 stops14h 47mAir Canada

Deal found 7/1

$974

mar. 7/2210:05 pmONT - YUL

2 stops10h 52mDelta

vie. 7/2512:46 pmYUL - ONT

1 stop12h 41mDelta

Deal found 7/1

$990

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 julio 1, 2025 and is based on user searches.

lun. 7/712:55 pmONT - YUL

2 stops17h 50mAmerican Airlines

dom. 7/137:14 amYUL - ONT

2 stops14h 39mAmerican Airlines

Deal found 6/30

$784

lun. 7/76:39 pmONT - YUL

1 stop10h 37mLufthansa

dom. 7/134:55 pmYUL - ONT

1 stop8h 11mLufthansa

Deal found 6/30

$867

mar. 7/811:40 amONT - YUL

1 stop9h 15mDelta

mar. 7/2211:00 amYUL - ONT

2 stops14h 27mDelta

Deal found 7/1

$644

mar. 7/86:39 pmONT - YUL

1 stop10h 37mUnited Airlines

mié. 7/911:23 amYUL - ONT

2 stops13h 43mUnited Airlines

Deal found 6/30

$716

jue. 7/105:14 pmONT - YUL

2 stops19h 56mMultiple Airlines

mié. 7/161:20 pmYUL - ONT

2 stops22h 49mMultiple Airlines

Deal found 6/30

$596

jue. 7/106:39 pmONT - YUL

1 stop10h 37mAir Canada

mié. 7/168:05 amYUL - ONT

1 stop12h 38mAir Canada

Deal found 6/30

$686

mar. 8/126:17 amONT - YUL

2 stops13h 18mAmerican Airlines

mar. 8/1912:30 pmYUL - ONT

2 stops13h 18mAmerican Airlines

Deal found 6/30

$544

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 julio 1, 2025.

mar. 9/234:45 pmONT - YUL

2 stops19h 48mAmerican Airlines

Deal found 6/30

$207

vie. 8/156:00 amONT - YUL

2 stops12h 17mMultiple Airlines

Deal found 7/1

$227

mar. 9/237:00 amONT - YUL

1 stop11h 29mUnited Airlines

Deal found 6/30

$290

mar. 7/1510:05 pmONT - YUL

2 stops20h 23mDelta

Deal found 6/30

$293

mié. 10/16:36 pmONT - YUL

1 stop10h 40mAir Canada

Deal found 6/30

$331

jue. 7/176:25 amONT - YUL

2 stops21h 43mWestJet

Deal found 6/30

$774

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

mar. 8/12

6:17 am-10:35 pm

2 stops13h 18m

Montreal Pierre Elliott Trudeau Intl

mar. 8/19

12:30 pm-10:48 pm

2 stops13h 18m

$544

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

dom. 10/12

5:05 am-3:26 pm

1 stop7h 21m

Montreal Pierre Elliott Trudeau Intl

jue. 10/16

4:45 pm-10:42 pm

1 stop8h 57m

$673

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

jue. 8/14

6:10 am-8:05 pm

1 stop10h 55m

Montreal Pierre Elliott Trudeau Intl

jue. 8/21

1:20 pm-10:30 pm

1 stop12h 10m

$703

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

sáb. 12/27

5:40 am-9:01 pm

2 stops12h 21m

Montreal Pierre Elliott Trudeau Intl

dom. 1/4

9:25 am-5:18 pm

2 stops10h 53m

$974

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

mar. 7/22

10:05 pm-11:57 am

2 stops10h 52m

Montreal Pierre Elliott Trudeau Intl

vie. 7/25

12:46 pm-10:27 pm

1 stop12h 41m

$990

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

mar. 9/23

4:45 pm-3:33 pm

2 stops19h 48m

$207

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

vie. 8/15

6:00 am-9:17 pm

2 stops12h 17m

$227

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

mar. 9/23

7:00 am-9:29 pm

1 stop11h 29m

$290

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

mar. 7/15

10:05 pm-9:28 pm

2 stops20h 23m

$293

OntarioMontreal

ONT - YUL

ONTYUL

Ontario

mié. 10/1

6:36 pm-8:16 am

1 stop10h 40m

$331

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

Showing 1-10 of 11 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.

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Read through reviews of airlines operating flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,973 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

7,973 reviews

Delta

8.0

Very good

7,973 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

8,858 reviews

Delta

8.0

Very good

7,973 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

7,973 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

2,909 reviews

Delta

8.0

Very good

7,973 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

9,665 reviews

Delta

8.0

Very good

7,973 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 $544, was found to be the cheapest airline from Ontario to Montreal Pierre Elliott Trudeau Intl Airport.Alternate airlines to your destination round-trip include United Airlines and Air Canada.
What are the cheapest airlines to fly from Ontario to Montreal Pierre Elliott Trudeau Intl Airport one-way?
$207 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 Delta, with prices starting from $290 and $293, 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

Dorval

Laval

Brossard

Longueuil

Sherbrooke

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Ontario to Pierre Elliott Trudeau Intl

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$219	Average$463	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$347	Average$435	FlexibilityNo cancel fee	On-timeN/A
Air Canada	Cheapest$347	Average$600	FlexibilityNo cancel fee	On-time67%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$207+ 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 9/23. 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

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Ontario to Pierre Elliott Trudeau Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 julio 1, 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 julio 1, 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 julio 1, 2025.

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Read through reviews of airlines operating flights from Ontario to Montreal Pierre Elliott Trudeau Intl Airport, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's 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?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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

100% Free

Book with Flexibility

Travel Smart

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 julio 1, 2025.