HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Pierre Elliott Trudeau Intl

$118+ Cheap flights from Chicago (CHI) 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YUL
Apr 5 — Apr 121
Sat 4/5
Sat 4/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Chicago 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.

Cheapflights Tip: The best prices from Chicago to Montreal Pierre Elliott Trudeau Intl are usually found in September or October, booked 51 days in advance, depart on a Thursday or Friday and return on a Thursday

Cheap flight deals from Chicago to Pierre Elliott Trudeau Intl

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Pierre Elliott Trudeau Intl (YUL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 31, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$231
(Vliegwinkel)

One-way from

$121
(Flightnetwork)

Popular in

December

Cheapest in

September

Average price

$394

Good round-trip deal

$509 or less

Good one-way deal

$218 or less
Provider with most accurate pricing for Chicago (CHI)-Montreal Pierre Elliott Trudeau Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Montreal Pierre Elliott Trudeau Intl flights.
Search Deals
From Chicago (CHI) to Montreal Pierre Elliott Trudeau Intl
Search Deals
One-way flight from Chicago (CHI) to Montreal Pierre Elliott Trudeau Intl
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($14 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals
Price to beat on a round-trip flight from Chicago (CHI) to Montreal Pierre Elliott Trudeau Intl.
Search Deals
Price to beat on a one-way flight from Chicago (CHI) to Montreal Pierre Elliott Trudeau Intl.
Search Deals

Find flight deals from Chicago to Pierre Elliott Trudeau Intl

Cheapest flights from Chicago to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Chicago to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 31, 2025.

This Vliegwinkel deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/1912:55 pmMDW - YUL
1 stop4h 07mPorter Airlines
Sun 4/206:50 amYUL - MDW
1 stop4h 30mPorter Airlines
Deal found 3/29$231
This Flightnetwork deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/191:55 pmORD - YUL
Nonstop2h 31mAir Canada
Sun 4/208:50 amYUL - ORD
1 stop4h 13mAir Canada
Deal found 3/29$245
This United deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/248:45 amORD - YUL
1 stop6h 05mMultiple Airlines
Thu 4/246:20 pmYUL - ORD
Nonstop2h 40mMultiple Airlines
Deal found 3/30$282
This Vliegwinkel deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/196:05 pmORD - YUL
Nonstop2h 24mLufthansa
Sun 4/206:15 amYUL - ORD
Nonstop2h 47mLufthansa
Deal found 3/29$292
This Trip.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/229:40 amMDW - YUL
1 stop5h 20mMultiple Airlines
Sat 5/246:10 amYUL - MDW
1 stop8h 05mMultiple Airlines
Deal found 3/31$297
This United Airlines deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/248:45 amORD - YUL
1 stop6h 05mUnited Airlines
Thu 4/247:00 pmYUL - ORD
1 stop5h 40mUnited Airlines
Deal found 3/30$297
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/193:02 pmMDW - YUL
1 stop7h 26mDelta
Sun 4/207:10 amYUL - MDW
1 stop6h 25mDelta
Deal found 3/29$310
This Kissandfly.com deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/198:25 amORD - YUL
Nonstop2h 19mBritish Airways
Sun 4/207:29 amYUL - ORD
1 stop9h 30mBritish Airways
Deal found 3/29$352
This Kiwi.com deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/189:00 amORD - YUL
1 stop13h 16mWestJet
Sat 5/247:00 amYUL - ORD
1 stop12h 48mWestJet
Deal found 3/30$363
This Delta deal was found by Cheapflights users on 3/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/213:40 pmORD - YUL
1 stop7h 15mDelta
Sat 6/287:00 amYUL - ORD
1 stop8h 30mDelta
Deal found 3/29$364
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/228:25 amORD - YUL
Nonstop2h 19mAmerican Airlines
Wed 4/2312:30 pmYUL - ORD
Nonstop2h 35mAmerican Airlines
Deal found 3/31$376
This SmartFares deal was found by Cheapflights users on 3/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/171:55 pmMDW - YUL
1 stop8h 24mWestJet
Sat 5/242:50 pmYUL - MDW
1 stop7h 23mWestJet
Deal found 3/30$393

Cheapflights Fare Finder

Customize your flight search to find flights from Chicago to Pierre Elliott Trudeau Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 31, 2025.
Use the filters below to find and compare flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Chicago

Fly to

Pierre Elliott Trudeau Intl

Route

Depart

Return

Price

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Sat 4/19

12:55 pm-6:02 pm

1 stop4h 07m

Montreal Pierre Elliott Trudeau Intl

Sun 4/20

6:50 am-10:20 am

1 stop4h 30m

$231

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 4/19

1:55 pm-5:26 pm

Nonstop2h 31m

Montreal Pierre Elliott Trudeau Intl

Sun 4/20

8:50 am-12:03 pm

1 stop4h 13m

$245

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 4/24

8:45 am-3:50 pm

1 stop6h 05m

Montreal Pierre Elliott Trudeau Intl

Thu 4/24

6:20 pm-8:00 pm

Nonstop2h 40m

$282

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 4/19

6:05 pm-9:29 pm

Nonstop2h 24m

Montreal Pierre Elliott Trudeau Intl

Sun 4/20

6:15 am-8:02 am

Nonstop2h 47m

$292

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 4/24

8:45 am-3:50 pm

1 stop6h 05m

Montreal Pierre Elliott Trudeau Intl

Thu 4/24

7:00 pm-11:40 pm

1 stop5h 40m

$297

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Thu 5/22

9:40 am-4:00 pm

1 stop5h 20m

Montreal Pierre Elliott Trudeau Intl

Sat 5/24

6:10 am-1:15 pm

1 stop8h 05m

$297

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Sat 4/19

1:16 pm-11:28 pm

1 stop9h 12m

Montreal Pierre Elliott Trudeau Intl

Sun 4/20

6:10 am-2:22 pm

1 stop9h 12m

$310

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 5/14

10:30 am-4:04 pm

1 stop4h 34m

Montreal Pierre Elliott Trudeau Intl

Wed 5/21

12:56 pm-6:37 pm

1 stop6h 41m

$329

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 4/19

8:25 am-11:44 am

Nonstop2h 19m

Montreal Pierre Elliott Trudeau Intl

Sun 4/20

7:29 am-3:59 pm

1 stop9h 30m

$352

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sun 5/18

9:00 am-11:16 pm

1 stop13h 16m

Montreal Pierre Elliott Trudeau Intl

Sat 5/24

7:00 am-6:48 pm

1 stop12h 48m

$363

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 25 results
1
2
3

Compare providers for flights from Chicago to Pierre Elliott Trudeau Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Chicago to Pierre Elliott Trudeau Intl in March.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*2 stars
FlightnetworkPrice Accuracy-Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Chicago-Montreal Pierre Elliott Trudeau Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Montreal Pierre Elliott Trudeau Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Montreal Pierre Elliott Trudeau Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Chicago-Montreal Pierre Elliott Trudeau Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Chicago-Montreal Pierre Elliott Trudeau Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago to Montreal Pierre Elliott Trudeau Intl Airport trip
Airports
ORD

For a smooth departure from ORD, consider using the "L" train to avoid Chicago traffic delays.

Read more about ORDby Ramsey Qubein
YUL

Take the Line 747 bus from YUL to downtown Montreal for a cost-effective and frequent service.

Read more about YULby John Walton
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
John Walton

John Walton

Expert on YUL

John Walton

John Walton

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Read more

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

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

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

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Pierre Elliott Trudeau Intl. Price data was last updated on March 28, 2025.

The price you pay for your flight from Chicago to Montreal Pierre Elliott Trudeau Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 51 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

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

Find hourly flight availability from Chicago 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 March 31, 2025.

When flying from Chicago to Montreal Pierre Elliott Trudeau Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 67% versus a flight in the morning.

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

Explore weekly flight availability from Chicago to Pierre Elliott Trudeau Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 31, 2025.

The most flights from CHI to YUL are scheduled on a Monday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 on average).

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.

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

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

Get insights into the airlines that provide service to Pierre Elliott Trudeau Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pierre Elliott Trudeau Intl. Reviews last updated March 31, 2025.
Peruse reviews from past customers who have flown with Delta, Porter Airlines and United Airlines from Chicago to Montreal to help guide your decision. 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
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,899 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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.
Porter Airlines
7.9
Good
277 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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
8,614 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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
2,789 reviews
Delta
8.0
Very good
7,899 reviews

Overall

8.0

Comfort

8.0

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

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

Find useful and relevant information for your journey from Chicago 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 to Montreal Pierre Elliott Trudeau Intl Airport round-trip?

    Cheapflights users have booked flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport round-trip from $231. Other airlines that can offer you cheap pricing are Air Canada, from $245, and United Airlines, from $282. These flights start at 42% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as $121. However, be on the lookout for offers from Porter Airlines and Delta, as they are both options that can get you from Chicago to Montreal Pierre Elliott Trudeau Intl Airport for a low price.

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

    No one likes to see their flight delayed. When booking a flight from Chicago to Montreal Pierre Elliott Trudeau Intl Airport consider choosing Emirates (92%), Avianca (91%) or ANA (84%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport?

    Looking at all options, your cheapest flight can be booked for $126. While the most popular route (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl) can be booked for $265 on average our data indicates $1,718 when flying from Chicago to Montreal Pierre Elliott Trudeau Intl Airport.

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

    Yes. In addition to deals on Chicago to Pierre Elliott Trudeau Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago 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 Chicago to Pierre Elliott Trudeau Intl.

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

    Yes. Cheapflights offers flight deals from Chicago 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 to Montreal Pierre Elliott Trudeau Intl Airport?

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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Laval
Dorval
Brossard
Longueuil
Sherbrooke
Bromont

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.

Top 4 airlines flying from Chicago to Pierre Elliott Trudeau Intl

Discover the top 4 airlines that operate flights from Chicago to Pierre Elliott Trudeau Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$166Average$440FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$168Average$420FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$170Average$394FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$249Average$381FlexibilityNo cancel feeOn-time52%
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.