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

The cheapest airlines for a one-way flight from Chicago to Montreal Pierre Elliott Trudeau Intl Airport are American Airlines (C$ 127), Porter Airlines (C$ 130), and Air Canada (C$ 142).

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

Travelers seeking maximum savings on their Chicago to Montreal Pierre Elliott Trudeau Intl Airport flight should consider departing on Wednesday at noon when fares are most often at their lowest. Saturday afternoons 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 64.0 - 111.0 mm per month. August is typically the wettest month, when rainfall can reach 111.0 mm. February is typically the driest time to visit Montreal Pierre Elliott Trudeau Intl Airport when rainfall is around 64.0 mm.

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 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -9.0 C).

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to Montreal Pierre Elliott Trudeau Intl Airport on time: Republic Airways (90%), Emirates (87%), Alaska Airlines (87%).

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

Flying to your destination on a Monday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Montreal Pierre Elliott Trudeau Intl Airport. Check prices with Cheapflights to find a great deal for your trip.

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

Flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport lean towards being more expensive in December. Prices are generally better when you fly from Chicago to Montreal Pierre Elliott Trudeau Intl Airport in September, with the cheapest ticket starting at C$ 186.

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.

C$ 130+ Flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport

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 Monday or Sunday and return on a Friday

Cheap flight deals from Chicago to Pierre Elliott Trudeau Intl

Round-trip from	C$ 270
One-way from	C$ 127
Popular in	December
Cheapest in	September
Average price	C$ 574
Good round-trip deal	C$ 115 or less
Good one-way deal	C$ 114 or less

Porter Airlines
24/9-26/9
2 total stops
8h 09m total
Chicago to Montreal

Search Deals

American Airlines
13/9
1 total stop
11h 41m total
Chicago to Montreal

Search Deals

Highest demand for flights based on searches. 6% potential increase in price (C$ 47 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (C$ 18 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Price to beat on a round-trip flight from Chicago (CHI) to Montreal Pierre Elliott Trudeau Intl.

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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 30 July 2025.

Wed 24/95:20 p.m.MDW - YUL

1 stop3h 55mPorter Airlines

Fri 26/91:10 p.m.YUL - MDW

1 stop4h 14mPorter Airlines

Deal found 28/7C$ 270

Sat 20/912:33 p.m.ORD - YUL

1 stop8h 59mMultiple Airlines

Mon 22/98:20 a.m.YUL - ORD

Nonstop2h 31mMultiple Airlines

Deal found 30/7C$ 274

Mon 22/98:40 a.m.ORD - YUL

Nonstop2h 17mAir Canada

Fri 26/98:20 a.m.YUL - ORD

Nonstop2h 31mAir Canada

Deal found 30/7C$ 280

Wed 29/109:12 p.m.ORD - YUL

1 stop14h 12mAmerican Airlines

Sun 2/113:52 p.m.YUL - ORD

Nonstop3h 00mAmerican Airlines

Deal found 29/7C$ 283

Thu 18/99:15 a.m.MDW - YUL

1 stop7h 05mMultiple Airlines

Sun 21/910:45 a.m.YUL - MDW

1 stop6h 39mMultiple Airlines

Deal found 27/7C$ 302

Sat 20/97:10 a.m.ORD - YUL

1 stop3h 50mDelta

Mon 22/96:55 p.m.YUL - ORD

1 stop5h 59mDelta

Deal found 30/7C$ 327

Sat 20/96:15 p.m.MDW - YUL

1 stop4h 14mDelta

Sun 28/96:00 a.m.YUL - MDW

1 stop3h 40mDelta

Deal found 30/7C$ 406

Sat 23/86:00 p.m.ORD - YUL

Nonstop2h 29mUnited Airlines

Mon 25/86:15 a.m.YUL - ORD

Nonstop2h 46mUnited Airlines

Deal found 29/7C$ 408

Best flights from Chicago to Pierre Elliott Trudeau Intl
Discover carefully curated flight deals from Chicago 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 30 July 2025.

Wed 24/95:20 p.m.MDW - YUL

1 stop3h 55mPorter Airlines

Fri 26/91:10 p.m.YUL - MDW

1 stop4h 14mPorter Airlines

Deal found 28/7C$ 270

Sat 20/912:33 p.m.ORD - YUL

1 stop8h 59mMultiple Airlines

Mon 22/98:20 a.m.YUL - ORD

Nonstop2h 31mMultiple Airlines

Deal found 30/7C$ 274

Mon 22/98:40 a.m.ORD - YUL

Nonstop2h 17mAir Canada

Fri 26/98:20 a.m.YUL - ORD

Nonstop2h 31mAir Canada

Deal found 30/7C$ 280

Wed 29/109:12 p.m.ORD - YUL

1 stop14h 12mAmerican Airlines

Sun 2/113:52 p.m.YUL - ORD

Nonstop3h 00mAmerican Airlines

Deal found 29/7C$ 283

Sat 20/97:10 a.m.ORD - YUL

1 stop3h 50mDelta

Mon 22/96:55 p.m.YUL - ORD

1 stop5h 59mDelta

Deal found 30/7C$ 327

Sat 23/86:00 p.m.ORD - YUL

Nonstop2h 29mUnited Airlines

Mon 25/86:15 a.m.YUL - ORD

Nonstop2h 46mUnited Airlines

Deal found 29/7C$ 408

Thu 18/99:15 a.m.MDW - YUL

1 stop7h 05mMultiple Airlines

Sun 21/910:45 a.m.YUL - MDW

1 stop6h 39mMultiple Airlines

Deal found 27/7C$ 302

Sat 20/96:15 p.m.MDW - YUL

1 stop4h 14mDelta

Sun 28/96:00 a.m.YUL - MDW

1 stop3h 40mDelta

Deal found 30/7C$ 406

Direct flights from Chicago to Pierre Elliott Trudeau Intl
Explore direct flight options from Chicago to Pierre Elliott Trudeau Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 30 July 2025.

Mon 22/98:40 a.m.ORD - YUL

Nonstop2h 17mAir Canada

Fri 26/98:20 a.m.YUL - ORD

Nonstop2h 31mAir Canada

Deal found 30/7C$ 280

Thu 4/96:00 p.m.ORD - YUL

Nonstop2h 29mMultiple Airlines

Mon 8/98:20 a.m.YUL - ORD

Nonstop2h 31mMultiple Airlines

Deal found 29/7C$ 392

Tue 2/98:10 a.m.ORD - YUL

Nonstop2h 26mAmerican Airlines

Fri 5/912:30 p.m.YUL - ORD

Nonstop2h 35mAmerican Airlines

Deal found 30/7C$ 399

Sat 23/86:00 p.m.ORD - YUL

Nonstop2h 29mUnited Airlines

Mon 25/86:15 a.m.YUL - ORD

Nonstop2h 46mUnited Airlines

Deal found 29/7C$ 408

Sat 23/86:00 p.m.ORD - YUL

Nonstop2h 29mLufthansa

Mon 25/86:15 a.m.YUL - ORD

Nonstop2h 46mLufthansa

Deal found 28/7C$ 440

Last-minute flights from Chicago to Pierre Elliott Trudeau Intl
Discover last-minute flight deals from Chicago to Pierre Elliott Trudeau Intl. Data last updated 30 July 2025 and is based on user searches.

Thu 7/88:38 p.m.MDW - YUL

2 stops26h 59mMultiple Airlines

Thu 14/81:10 p.m.YUL - MDW

1 stop4h 14mMultiple Airlines

Deal found 28/7C$ 694

Fri 8/85:20 p.m.MDW - YUL

1 stop3h 55mPorter Airlines

Wed 13/81:10 p.m.YUL - MDW

1 stop4h 14mPorter Airlines

Deal found 29/7C$ 530

Fri 8/81:21 p.m.ORD - YUL

Nonstop2h 21mAmerican Airlines

Fri 15/85:29 p.m.YUL - ORD

Nonstop2h 36mAmerican Airlines

Deal found 27/7C$ 578

Fri 8/88:25 p.m.ORD - YUL

1 stop4h 26mAir Canada

Tue 12/88:20 a.m.YUL - ORD

Nonstop2h 32mAir Canada

Deal found 29/7C$ 595

Fri 8/85:05 a.m.ORD - YUL

3 stops16h 10mMultiple Airlines

Fri 15/86:45 a.m.YUL - ORD

2 stops18h 14mMultiple Airlines

Deal found 29/7C$ 626

Fri 8/87:15 a.m.ORD - YUL

Nonstop2h 25mUnited Airlines

Mon 11/86:15 a.m.YUL - ORD

Nonstop2h 44mUnited Airlines

Deal found 28/7C$ 628

Fri 8/81:46 p.m.MDW - YUL

1 stop8h 29mDelta

Sun 10/812:46 p.m.YUL - MDW

1 stop9h 56mDelta

Deal found 28/7C$ 655

Fri 8/85:08 p.m.ORD - YUL

1 stop5h 00mDelta

Wed 13/86:00 a.m.YUL - ORD

1 stop5h 05mDelta

Deal found 28/7C$ 715

Fri 8/812:43 p.m.MDW - YUL

2 stops26h 44mWestJet

Fri 15/87:00 a.m.YUL - MDW

1 stop27h 36mWestJet

Deal found 29/7C$ 908

Wed 20/85:20 p.m.MDW - YUL

1 stop3h 55mPorter Airlines

Tue 26/81:10 p.m.YUL - MDW

1 stop4h 14mPorter Airlines

Deal found 28/7C$ 287

Sat 23/86:00 p.m.ORD - YUL

Nonstop2h 29mUnited Airlines

Mon 25/86:15 a.m.YUL - ORD

Nonstop2h 46mUnited Airlines

Deal found 29/7C$ 408

Sat 23/89:40 a.m.MDW - YUL

1 stop8h 40mMultiple Airlines

Tue 26/81:10 p.m.YUL - MDW

1 stop4h 14mMultiple Airlines

Deal found 29/7C$ 444

One-way flights from Chicago to Pierre Elliott Trudeau Intl
Search for one-way flight options from Chicago to Pierre Elliott Trudeau Intl. Find affordable one-way fares based on user searches. Data last updated 30 July 2025.

Sun 7/99:35 a.m.MDW - YUL

1 stop5h 25mPorter Airlines

Deal found 29/7C$ 130

Wed 10/123:45 p.m.ORD - YUL

Nonstop2h 05mAir Canada

Deal found 30/7C$ 142

Wed 10/127:00 a.m.ORD - YUL

1 stop8h 00mDelta

Deal found 30/7C$ 156

Sun 31/88:10 a.m.ORD - YUL

Nonstop2h 26mAmerican Airlines

Deal found 29/7C$ 167

Wed 17/96:30 a.m.ORD - YUL

2 stops13h 47mMultiple Airlines

Deal found 30/7C$ 170

Wed 27/82:08 p.m.ORD - YUL

Nonstop2h 18mUnited Airlines

Deal found 30/7C$ 182

Thu 11/912:43 p.m.MDW - YUL

1 stop10h 13mDelta

Deal found 28/7C$ 221

Thu 28/811:00 a.m.ORD - YUL

2 stops19h 08mWestJet

Deal found 29/7C$ 239

Mon 27/101:48 p.m.MDW - YUL

1 stop8h 33mWestJet

Deal found 29/7C$ 243

Mon 27/108:39 a.m.MDW - YUL

2 stops12h 31mMultiple Airlines

Deal found 29/7C$ 287

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Wed 24/9

5:20 p.m.-10:15 p.m.

1 stop3h 55m

Montreal Pierre Elliott Trudeau Intl

Fri 26/9

1:10 p.m.-4:24 p.m.

1 stop4h 14m

C$ 270

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 20/9

12:33 p.m.-10:32 p.m.

1 stop8h 59m

Montreal Pierre Elliott Trudeau Intl

Mon 22/9

8:20 a.m.-9:51 a.m.

Nonstop2h 31m

C$ 274

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Mon 22/9

8:40 a.m.-11:57 a.m.

Nonstop2h 17m

Montreal Pierre Elliott Trudeau Intl

Fri 26/9

8:20 a.m.-9:51 a.m.

Nonstop2h 31m

C$ 280

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 29/10

9:12 p.m.-12:24 p.m.

1 stop14h 12m

Montreal Pierre Elliott Trudeau Intl

Sun 2/11

3:52 p.m.-5:52 p.m.

Nonstop3h 00m

C$ 283

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Thu 18/9

9:15 a.m.-5:20 p.m.

1 stop7h 05m

Montreal Pierre Elliott Trudeau Intl

Sun 21/9

10:45 a.m.-4:24 p.m.

1 stop6h 39m

C$ 302

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 20/9

7:10 a.m.-12:00 p.m.

1 stop3h 50m

Montreal Pierre Elliott Trudeau Intl

Mon 22/9

6:55 p.m.-11:54 p.m.

1 stop5h 59m

C$ 327

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Sat 20/9

6:15 p.m.-11:29 p.m.

1 stop4h 14m

Montreal Pierre Elliott Trudeau Intl

Sun 28/9

6:00 a.m.-8:40 a.m.

1 stop3h 40m

C$ 406

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 23/8

6:00 p.m.-9:29 p.m.

Nonstop2h 29m

Montreal Pierre Elliott Trudeau Intl

Mon 25/8

6:15 a.m.-8:01 a.m.

Nonstop2h 46m

C$ 408

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Sun 7/9

9:35 a.m.-4:00 p.m.

1 stop5h 25m

C$ 130

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 10/12

3:45 p.m.-6:50 p.m.

Nonstop2h 05m

C$ 142

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/7

Showing 1-10 of 18 results

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?

Booking 51 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago 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 to Montreal Pierre Elliott Trudeau Intl Airport?

Currently, October is the cheapest month in which you can book a flight from Chicago to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 241). Flying from Chicago to Montreal Pierre Elliott Trudeau Intl Airport in April is currently the most expensive (average of C$ 316). 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?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 47% on flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport by exploring options for tickets at noon.

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

The most flights from CHI 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

Get a feel of what it's like to fly with Porter Airlines,Delta, andUnited Airlines from Chicago to Montreal Pierre Elliott Trudeau Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

Porter Airlines

8.0

Very good

318 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Delta

8.0

Very good

7,980 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

United Airlines

7.4

Good

8,896 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

American Airlines

7.2

Good

10,000 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

WestJet

7.2

Good

2,975 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Related info for your journey

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 C$ 270. Other airlines that can offer you cheap pricing are Air Canada, from C$ 280, and American Airlines, from C$ 283. These flights start at 48% 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 airlines for a one-way flight from Chicago to Montreal Pierre Elliott Trudeau Intl Airport are American Airlines (C$ 127), Porter Airlines (C$ 130), and Air Canada (C$ 142).
What are the most reliable airlines from Chicago to Montreal Pierre Elliott Trudeau Intl Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago to Montreal Pierre Elliott Trudeau Intl Airport on time: Republic Airways (90%), Emirates (87%), Alaska Airlines (87%).
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 C$ 114. While the most popular route (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl) can be booked for C$ 266 on average our data indicates C$ 231 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, October is the cheapest month in which you can book a flight from Chicago to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 241). Flying from Chicago to Montreal Pierre Elliott Trudeau Intl Airport in April is currently the most expensive (average of C$ 316). 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

Sherbrooke

Cornwall

Brossard

Dorval

Montebello

Drummondville

Trois-Rivières

Saint-Jean-sur-Richelieu

Boucherville

Saint-Sauveur

Bromont

North Hatley

Louiseville

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Chicago to Pierre Elliott Trudeau Intl

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 305	AverageC$ 682	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

How does Cheapflights help users find flights from Chicago to Pierre Elliott Trudeau Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Chicago to Pierre Elliott Trudeau Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Chicago to Pierre Elliott Trudeau Intl?

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Cheap flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport from C$ 130

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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.

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 Monday or Sunday and return on a Friday

Cheap flight deals from Chicago to Pierre Elliott Trudeau Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Chicago to Pierre Elliott Trudeau Intl

Cheapest flights from Chicago to Pierre Elliott Trudeau IntlExplore 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 30 July 2025.

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 30 July 2025.

Cheapflights Fare Finder

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

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.

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 25 July 2025.

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

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 30 July 2025.

Weekly flight availability from Chicago 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 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?

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

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

What are the cheapest flights 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?

How can I 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?

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Chicago to Pierre Elliott Trudeau Intl

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

Top airline flying from Chicago to Pierre Elliott Trudeau Intl

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How does Cheapflights help users find flights from Chicago to Pierre Elliott Trudeau Intl?

Why should you use Cheapflights to find cheap flight tickets from Chicago to Pierre Elliott Trudeau Intl?

Can Cheapflights find flights from Chicago to Pierre Elliott Trudeau Intl with no change fees?

Can Cheapflights notify me if prices for flights from Chicago to Pierre Elliott Trudeau Intl become cheaper?

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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 30 July 2025.