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 Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

The most popular airlines flying from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport are American Airlines, Air Canada and United Airlines. Something to consider prior to booking your flight.

What is the cheapest day to fly round-trip from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

Wednesday is generally a great day to depart. Flying on this day could help you save up to 22%.

How can I find direct flights from O'Hare Intl 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 O'Hare Intl to Pierre Elliott Trudeau Intl.

Can I find deals for business class flights from O'Hare Intl to Pierre Elliott Trudeau Intl?

Yes. Cheapflights offers flight deals from O'Hare Intl 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.

$114+ Flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport

Q: What is the cheapest day to fly from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

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

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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Montreal Pierre Elliott Trudeau Intl are usually found in September or October, booked 50 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap flight deals from O'Hare Intl to Pierre Elliott Trudeau Intl

Round-trip from	$201 (Atrapalo)
One-way from	$114 (Air Canada)
Popular in	December
Cheapest in	September
Average price	$405
Good round-trip deal	$329 or less
Good one-way deal	$134 or less

From Chicago O'Hare Intl to Montreal Pierre Elliott Trudeau Intl

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One-way flight from Chicago O'Hare Intl to Montreal Pierre Elliott Trudeau Intl

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Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).

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Cheapest flight prices on average. 4% potential price decrease ($18 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Chicago O'Hare Intl to Montreal Pierre Elliott Trudeau Intl.

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Price to beat on a one-way flight from Chicago O'Hare Intl to Montreal Pierre Elliott Trudeau Intl.

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Find flight deals from O'Hare Intl to Pierre Elliott Trudeau Intl

Cheapest flights from O'Hare Intl to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from O'Hare Intl to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Tue 9/910:40 amORD - YUL

Nonstop2h 14mAir Canada

Tue 9/168:20 amYUL - ORD

Nonstop2h 31mAir Canada

Deal found 7/26

$201

Sat 8/301:21 pmORD - YUL

Nonstop2h 21mAmerican Airlines

Sat 9/67:50 amYUL - ORD

1 stop10h 39mAmerican Airlines

Deal found 7/27

$204

Tue 10/211:26 pmORD - YUL

1 stop9h 32mDelta

Wed 10/296:00 amYUL - ORD

1 stop4h 23mDelta

Deal found 7/27

$237

Thu 9/49:00 amORD - YUL

1 stop9h 45mMultiple Airlines

Mon 9/88:20 amYUL - ORD

Nonstop2h 31mMultiple Airlines

Deal found 7/27

$269

Mon 9/226:00 pmORD - YUL

Nonstop2h 29mUnited Airlines

Tue 9/236:15 amYUL - ORD

Nonstop2h 46mUnited Airlines

Deal found 7/28

$317

Best flights from O'Hare Intl to Pierre Elliott Trudeau Intl
Discover carefully curated flight deals from O'Hare Intl 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 July 28, 2025.

Tue 9/910:40 amORD - YUL

Nonstop2h 14mAir Canada

Tue 9/168:20 amYUL - ORD

Nonstop2h 31mAir Canada

Deal found 7/26

$201

Sat 8/301:21 pmORD - YUL

Nonstop2h 21mAmerican Airlines

Sat 9/67:50 amYUL - ORD

1 stop10h 39mAmerican Airlines

Deal found 7/27

$204

Tue 10/211:26 pmORD - YUL

1 stop9h 32mDelta

Mon 10/276:41 pmYUL - ORD

1 stop6h 16mDelta

Deal found 7/27

$237

Thu 9/49:00 amORD - YUL

1 stop9h 45mMultiple Airlines

Mon 9/88:20 amYUL - ORD

Nonstop2h 31mMultiple Airlines

Deal found 7/27

$269

Mon 9/226:00 pmORD - YUL

Nonstop2h 29mUnited Airlines

Wed 9/246:15 amYUL - ORD

Nonstop2h 46mUnited Airlines

Deal found 7/28

$317

Last-minute flights from O'Hare Intl to Pierre Elliott Trudeau Intl
Discover last-minute flight deals from O'Hare Intl to Pierre Elliott Trudeau Intl. Data last updated July 28, 2025 and is based on user searches.

Tue 8/53:35 pmORD - YUL

Nonstop2h 15mAir Canada

Sat 8/96:40 pmYUL - ORD

Nonstop2h 36mAir Canada

Deal found 7/26

$419

Tue 8/57:00 amORD - YUL

1 stop7h 24mAmerican Airlines

Wed 8/135:29 pmYUL - ORD

Nonstop2h 36mAmerican Airlines

Deal found 7/26

$429

Tue 8/55:51 amORD - YUL

1 stop11h 04mMultiple Airlines

Wed 8/136:45 amYUL - ORD

2 stops18h 14mMultiple Airlines

Deal found 7/26

$499

Thu 8/77:00 amORD - YUL

1 stop9h 54mDelta

Mon 8/1112:47 pmYUL - ORD

1 stop9h 48mDelta

Deal found 7/26

$444

Thu 8/75:58 pmORD - YUL

Nonstop2h 31mUnited Airlines

Sun 8/106:15 amYUL - ORD

Nonstop2h 44mUnited Airlines

Deal found 7/27

$455

Tue 8/265:05 amORD - YUL

3 stops16h 10mMultiple Airlines

Tue 9/26:45 amYUL - ORD

2 stops18h 14mMultiple Airlines

Deal found 7/27

$335

Thu 8/281:30 pmORD - YUL

1 stop9h 23mDelta

Sun 8/316:00 amYUL - ORD

1 stop5h 20mDelta

Deal found 7/27

$308

Sat 8/301:21 pmORD - YUL

Nonstop2h 21mAmerican Airlines

Sat 9/67:50 amYUL - ORD

1 stop10h 39mAmerican Airlines

Deal found 7/27

$204

Sat 8/306:00 pmORD - YUL

Nonstop2h 29mUnited Airlines

Sun 8/316:15 amYUL - ORD

Nonstop2h 46mUnited Airlines

Deal found 7/28

$302

Sun 8/318:40 amORD - YUL

Nonstop2h 18mAir Canada

Mon 9/19:15 amYUL - ORD

1 stop11h 14mAir Canada

Deal found 7/27

$209

One-way flights from O'Hare Intl to Pierre Elliott Trudeau Intl
Search for one-way flight options from O'Hare Intl to Pierre Elliott Trudeau Intl. Find affordable one-way fares based on user searches. Data last updated July 28, 2025.

Thu 8/282:08 pmORD - YUL

Nonstop2h 18mAir Canada

Deal found 7/26

$114

Sun 8/178:10 amORD - YUL

Nonstop2h 26mAmerican Airlines

Deal found 7/27

$130

Mon 8/182:07 pmORD - YUL

Nonstop2h 19mUnited Airlines

Deal found 7/25

$132

Tue 9/96:30 amORD - YUL

3 stops14h 45mMultiple Airlines

Deal found 7/26

$136

Fri 8/291:30 pmORD - YUL

1 stop9h 23mDelta

Deal found 7/27

$160

Fri 8/226:10 amORD - YUL

2 stops17h 33mWestJet

Deal found 7/26

$172

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Tue 9/9

10:40 am-1:54 pm

Nonstop2h 14m

Montreal Pierre Elliott Trudeau Intl

Tue 9/16

8:20 am-9:51 am

Nonstop2h 31m

$201

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 8/30

1:21 pm-4:42 pm

Nonstop2h 21m

Montreal Pierre Elliott Trudeau Intl

Sat 9/6

7:50 am-5:29 pm

1 stop10h 39m

$204

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Tue 10/21

6:45 am-5:34 pm

1 stop9h 49m

Montreal Pierre Elliott Trudeau Intl

Sat 10/25

6:00 am-12:45 pm

1 stop7h 45m

$237

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 9/4

9:00 am-7:45 pm

1 stop9h 45m

Montreal Pierre Elliott Trudeau Intl

Mon 9/8

8:20 am-9:51 am

Nonstop2h 31m

$269

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Mon 9/22

6:00 pm-9:29 pm

Nonstop2h 29m

Montreal Pierre Elliott Trudeau Intl

Tue 9/23

6:15 am-8:01 am

Nonstop2h 46m

$317

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 8/28

2:08 pm-5:26 pm

Nonstop2h 18m

$114

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sun 8/17

8:10 am-11:36 am

Nonstop2h 26m

$130

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sun 8/24

7:11 am-10:40 am

Nonstop2h 29m

$132

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Tue 9/9

6:30 am-10:15 pm

3 stops14h 45m

$136

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Fri 8/29

1:30 pm-11:53 pm

1 stop9h 23m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 11 results

The best insider tips for Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport trip

Airports

ORD

For a quick departure, consider using the "L" train to avoid Chicago traffic delays when heading to ORD.

YUL

Use the ArriveCAN app to fill out your arrival declaration card on the plane for a smoother entry at YUL.

Our travel experts

Ramsey Qubein

Expert on ORD

John Walton

Expert on YUL

Best time to book a flight from O'Hare Intl to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from O'Hare Intl 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 Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

Booking 50 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport (average of $270). Flying from Chicago O'Hare Intl Airport 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 ORD to YUL?

It’s optimal to fly from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport at noon. By choosing this option you can save up to 28% on the cost of your flight, compared to a flight in the morning.

Weekly flight availability from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport

The most flights from ORD to YUL are scheduled on a Monday (28 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (26 on average).

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

7,971 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Delta

8.0

Very good

7,971 reviews

Delta

8.0

Very good

7,971 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

United Airlines

7.4

Good

8,893 reviews

Delta

8.0

Very good

7,971 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

American Airlines

7.2

Good

10,000 reviews

Delta

8.0

Very good

7,971 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

WestJet

7.2

Good

2,968 reviews

Delta

8.0

Very good

7,971 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Air Canada

7.1

Good

9,813 reviews

Delta

8.0

Very good

7,971 reviews

Reviews

1 / 20

10.0

Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

What are the cheapest airlines flying from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport round-trip?
Flying on Air Canada is currently your cheapest option to Montreal Pierre Elliott Trudeau Intl Airport, with prices starting at $201. Additional round-trip tickets that might be worth considering are offered by American Airlines and Delta, with the lowest prices starting at $204 and $237, respectively. Air Canada is priced at 50% lower than the current average price of a flight leaving 3 months from now.
What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport one-way?
For one-way options, check prices for Air Canada. According to our data, you can fly for as low as $114. Users have also found prices from $130 and $132 on American Airlines and United Airlines, respectively.
What are the most reliable airlines from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?
The top 3 most reliable airlines when flying from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport are Republic Airways (90%), Emirates (87%) and Alaska Airlines (87%).
What are the cheapest flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?
On average you can expect to pay $1,470 for a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport. The cheapest flight overall is $74 while the most popular route, (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl) is currently priced at $184.
Can I find deals for flights from O'Hare Intl to Pierre Elliott Trudeau Intl that include hotel bookings?
Yes. In addition to deals on O'Hare Intl to Pierre Elliott Trudeau Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from O'Hare Intl 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 O'Hare Intl to Pierre Elliott Trudeau Intl.
Can I find deals for business class flights from O'Hare Intl to Pierre Elliott Trudeau Intl?
Yes. Cheapflights offers flight deals from O'Hare Intl 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 Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?
Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport (average of $270). Flying from Chicago O'Hare Intl Airport 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

Laval

Longueuil

Brossard

Sherbrooke

Dorval

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Top 3 airlines flying from O'Hare Intl to Pierre Elliott Trudeau Intl

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	Cheapest$150	Average$405	FlexibilityNo cancel fee	On-time67%
American Airlines	Cheapest$192	Average$405	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$202	Average$383	FlexibilityNo cancel fee	On-time69%

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$114+ Cheap flights from O'Hare Intl (ORD) 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 8/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from O'Hare Intl to Pierre Elliott Trudeau Intl with Cheapflights

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Cheapflights Tip: The best prices from Chicago O'Hare Intl to Montreal Pierre Elliott Trudeau Intl are usually found in September or October, booked 50 days in advance, depart on a Thursday or Friday and return on a Saturday

Cheap flight deals from O'Hare Intl to Pierre Elliott Trudeau Intl

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Cheapest flights from O'Hare Intl to Pierre Elliott Trudeau IntlExplore the most affordable flight options available from O'Hare Intl to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Explore the most affordable flight options available from O'Hare Intl to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.

Cheapflights Fare Finder

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

The best insider tips for Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport flights

Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport trip

Airports

ORD

YUL

Our travel experts

Best time to book a flight from O'Hare Intl to Pierre Elliott Trudeau Intl

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

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Pierre Elliott Trudeau Intl. Price data was last updated on July 25, 2025.

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

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

Find hourly flight availability from O'Hare Intl 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 July 28, 2025.

Weekly flight availability from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl 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 are the cheapest airlines flying from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport round-trip?

What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport one-way?

What are the most reliable airlines from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

What are the cheapest flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

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

How can I find direct flights from O'Hare Intl to Pierre Elliott Trudeau Intl?

Can I find deals for business class flights from O'Hare Intl to Pierre Elliott Trudeau Intl?

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

Traveling to a place near Montreal Pierre Elliott Trudeau Intl Airport?

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Alternative routes for O'Hare Intl to Pierre Elliott Trudeau Intl

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Top 3 airlines flying from O'Hare Intl to Pierre Elliott Trudeau Intl

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Cheapest flights from O'Hare Intl to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from O'Hare Intl to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 28, 2025.