What is the cheapest airline that flies from Montreal Pierre Elliott Trudeau Intl to Illinois?

Air Canada, Porter Airlines, and Delta are the most popular carriers operating from Montreal Pierre Elliott Trudeau Intl to Illinois

What airlines fly to Illinois?

Air Canada, United Airlines and Porter Airlines are the top three most popular airlines that fly to Illinois from Montreal Pierre Elliott Trudeau Intl Airport according to our data. Air Canada is the first choice among our users, with 73% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 4 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How many operators does momondo search for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

As of November 2025, there are 5 operators available to choose from for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

How old do you have to be to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$142 Cheap Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in 2025/26

Q: How many flights depart from Montreal Pierre Elliott Trudeau Intl Airport to Illinois on average per day?

18 flights are operational daily from Montreal Pierre Elliott Trudeau Intl Airport to Illinois as of November 2025. The most popular departure time for this route is 6:00AM, with 54% of flights per day taking off in the afternoon.

Q: How many flights depart from Montreal Pierre Elliott Trudeau Intl Airport to Illinois on average per week?

The number of flights available between Montreal Pierre Elliott Trudeau Intl Airport and Illinois is 128 per week as of November 2025. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.

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Find the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

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One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

2:10 pm - 5:48 pmYUL-ORD

4h 38m1 stop

12:50 pm - 3:57 pmORD-YUL

2h 07mnonstop

$231Air Canada

Find Deal

Tue, Feb 24 - Tue, Mar 3

10:10 am - 3:10 pmYUL-ORD

6h 00m1 stop

3:35 pm - 6:40 pmORD-YUL

2h 05mnonstop

$232Air Canada

Find Deal

Sat, Jan 24 - Wed, Jan 28

10:15 am - 3:20 pmYUL-MDW

6h 05m1 stop

11:00 am - 6:45 pmMDW-YUL

6h 45m1 stop

$233Porter Airlines

Find Deal

Thu, Apr 2 - Tue, Apr 7

6:00 am - 9:35 amYUL-ORD

4h 35m1 stop

7:10 am - 5:04 pmORD-YUL

8h 54m1 stop

$233Delta

Find Deal

Sat, Apr 4 - Wed, Apr 8

2:25 pm - 11:35 amYUL-ORD

22h 10m1 stop

8:09 am - 3:20 pmORD-YUL

6h 11m1 stop

$243American Airlines

Find Deal

Thu, Feb 5 - Sun, Feb 8

8:55 am - 11:50 amYUL-MDW

3h 55m1 stop

11:00 am - 5:45 pmMDW-YUL

5h 45m1 stop

$247Porter Airlines

Find Deal

Sat, Apr 4 - Tue, Apr 7

6:00 am - 9:35 amYUL-ORD

4h 35m1 stop

5:50 am - 5:04 pmORD-YUL

10h 14m1 stop

$255Delta

Find Deal

Sat, Apr 4 - Wed, Apr 8

2:25 pm - 7:40 pmYUL-ORD

6h 15m1 stop

8:55 pm - 3:24 pmORD-YUL

17h 29m1 stop

$301American Airlines

Find Deal

Tue, Feb 24 - Tue, Mar 3

7:00 pm - 11:01 amYUL-STL

17h 01m2 stops

6:42 pm - 12:46 pmSTL-YUL

17h 04m2 stops

$575United Airlines

Find Deal

Fri, Dec 5 - Mon, Dec 8

7:00 am - 2:31 pmYUL-STL

8h 31m2 stops

10:00 am - 8:32 pmSTL-YUL

9h 32m2 stops

$700United Airlines

Find Deal

Thu, Mar 26 - Sat, Mar 28

Air Canada flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Our best Air Canada deals on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight tickets

Air Canada

Feb 24

YUL2:10 pmMontreal Pierre Elliott Trudeau Intl

4h 38m

1 stop

ORD5:48 pmChicago O'Hare Intl

Mar 3

ORD12:50 pmChicago O'Hare Intl

2h 07m

YUL3:57 pmMontreal Pierre Elliott Trudeau Intl

$231

Find similar

Air Canada

Jan 24

YUL10:10 amMontreal Pierre Elliott Trudeau Intl

6h 00m

1 stop

ORD3:10 pmChicago O'Hare Intl

Jan 28

ORD3:35 pmChicago O'Hare Intl

2h 05m

YUL6:40 pmMontreal Pierre Elliott Trudeau Intl

$232

Find similar

Air Canada

Jan 22

YUL4:45 pmMontreal Pierre Elliott Trudeau Intl

3h 06m

ORD6:51 pmChicago O'Hare Intl

Jan 26

ORD10:35 amChicago O'Hare Intl

2h 25m

YUL2:00 pmMontreal Pierre Elliott Trudeau Intl

$239

Find similar

Delta flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Our best Delta deals on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight tickets

Delta

Apr 4

YUL6:00 amMontreal Pierre Elliott Trudeau Intl

4h 35m

1 stop

ORD9:35 amChicago O'Hare Intl

Apr 8

ORD7:10 amChicago O'Hare Intl

8h 54m

1 stop

YUL5:04 pmMontreal Pierre Elliott Trudeau Intl

$233

Find similar

Delta

Apr 4

YUL6:00 amMontreal Pierre Elliott Trudeau Intl

4h 35m

1 stop

ORD9:35 amChicago O'Hare Intl

Apr 8

ORD5:50 amChicago O'Hare Intl

10h 14m

1 stop

YUL5:04 pmMontreal Pierre Elliott Trudeau Intl

$255

Find similar

Delta

Nov 23

YUL7:10 amMontreal Pierre Elliott Trudeau Intl

5h 24m

1 stop

ORD11:34 amChicago O'Hare Intl

Nov 28

ORD6:45 amChicago O'Hare Intl

4h 15m

1 stop

YUL12:00 pmMontreal Pierre Elliott Trudeau Intl

$302

Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 2/24

2:10 pm-5:48 pm

1 stop4h 38m

Chicago O'Hare Intl

Tue 3/3

12:50 pm-3:57 pm

Nonstop2h 07m

$231

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 1/24

10:10 am-3:10 pm

1 stop6h 00m

Chicago O'Hare Intl

Wed 1/28

3:35 pm-6:40 pm

Nonstop2h 05m

$232

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 4/2

10:15 am-3:20 pm

1 stop6h 05m

Chicago Midway

Tue 4/7

11:00 am-6:45 pm

1 stop6h 45m

$233

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 4/4

6:00 am-9:35 am

1 stop4h 35m

Chicago O'Hare Intl

Wed 4/8

7:10 am-5:04 pm

1 stop8h 54m

$233

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 2/5

2:25 pm-11:35 am

1 stop22h 10m

Chicago O'Hare Intl

Sun 2/8

8:09 am-3:20 pm

1 stop6h 11m

$243

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Sat 4/4

8:55 am-11:50 am

1 stop3h 55m

Chicago Midway

Tue 4/7

11:00 am-5:45 pm

1 stop5h 45m

$247

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 4/4

6:00 am-9:35 am

1 stop4h 35m

Chicago O'Hare Intl

Wed 4/8

5:50 am-5:04 pm

1 stop10h 14m

$255

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 2/24

2:25 pm-7:40 pm

1 stop6h 15m

Chicago O'Hare Intl

Tue 3/3

8:55 pm-3:24 pm

1 stop17h 29m

$301

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 12/5

7:00 pm-11:01 am

2 stops17h 01m

Lambert-St Louis

Mon 12/8

6:42 pm-12:46 pm

2 stops17h 04m

$575

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 3/26

7:00 am-2:31 pm

2 stops8h 31m

Lambert-St Louis

Sat 3/28

10:00 am-8:32 pm

2 stops9h 32m

$700

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How to get the cheapest flight ticket from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Montreal Pierre Elliott Trudeau Intl Airport is in September. Flight prices, which tend to average around $276, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of September, then flying in June is also cheap. Prices for this month can be found on momondo for an average of $295.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Montreal Pierre Elliott Trudeau Intl Airport to Illinois is on a Friday when prices can be found for as low as $446. Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois on a Tuesday will generally be more expensive and average around $630. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois during this time can be as low as $498. Flights in the morning are often more expensive with an average ticket price of $537.

What is the cheapest Montreal Pierre Elliott Trudeau Intl to Illinois flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl for the best Montreal Pierre Elliott Trudeau Intl - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Montreal Pierre Elliott Trudeau Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $372 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Montreal Pierre Elliott Trudeau Intl Airport for as low as $231 on momondo.

What cabin class options are available on Montreal Pierre Elliott Trudeau Intl to Illinois flights?

There are 4 cabin classes available to choose from on Montreal Pierre Elliott Trudeau Intl to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flights?

No. A direct flight is the cheapest option for a flight between Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

Cheap Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Best Price Found	$260
Fastest flight time	2h 35m
Direct flights	Every day
Airports in Illinois	1 airport

The best one-way flight to Illinois from Montreal Pierre Elliott Trudeau Intl Airport in the past 72 hours is $260. The best round-trip flight deal from Montreal Pierre Elliott Trudeau Intl Airport to Illinois found on momondo in the last 72 hours is $352.

The fastest flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois takes 2h 35m

Direct flights go from Montreal Pierre Elliott Trudeau Intl Airport to Illinois every day.

There is 1 airport near Illinois: Chicago O'Hare Intl (ORD)

Search flight deals

When did momondo last update prices for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?
Prices for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?
As of November 2025, there are 5 operators available to choose from for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.
How old do you have to be to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Montreal Pierre Elliott Trudeau Intl Airport to Illinois is Embraer 175 (Enhanced Winglets), representing 28.67% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 12.79%, Embraer 175 at 10.96%, and Canadair (Bombardier) Regional Jet 900 at 10.05%.

Best airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Compare and see reviews for airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $112	Free Cancellation	Rating 7.4 8,996 reviews	Search United Airlines flights
Air Canada	PriceFrom $174	Free Cancellation	Rating 7.1 10,397 reviews	Search Air Canada flights
Porter Airlines	PriceFrom $226	Free Cancellation	Rating 8.0 384 reviews	Search Porter Airlines flights
American Airlines	PriceFrom $251	Free Cancellation	Rating 7.2 11,034 reviews	Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Montreal to Illinois?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Montreal to Illinois for you.

Can I find flights from Montreal to Illinois with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Illinois from Montreal with this policy.

How can momondo help me find flights from Montreal to Illinois?

momondo provides multiple filters to help you find the best flight to Illinois from Montreal. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Montreal to Illinois right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Montreal to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Montreal Pierre Elliott Trudeau Intl Airport flight routes

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Flights from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl

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Flights from Montreal Pierre Elliott Trudeau Intl to Newark

Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from $165

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Find the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

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Air Canada flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Our best Air Canada deals on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight tickets

Delta flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Our best Delta deals on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight tickets

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

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How to get the cheapest flight ticket from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois during this time can be as low as $498. Flights in the morning are often more expensive with an average ticket price of $537.

What is the cheapest Montreal Pierre Elliott Trudeau Intl to Illinois flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl for the best Montreal Pierre Elliott Trudeau Intl - Illinois flight prices

How far in advance should I book a flight to Illinois?

What cabin class options are available on Montreal Pierre Elliott Trudeau Intl to Illinois flights?

There are 4 cabin classes available to choose from on Montreal Pierre Elliott Trudeau Intl to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flights?

No. A direct flight is the cheapest option for a flight between Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

What is the cheapest airline that flies from Montreal Pierre Elliott Trudeau Intl to Illinois?

Air Canada, Porter Airlines, and Delta are the most popular carriers operating from Montreal Pierre Elliott Trudeau Intl to Illinois

What airlines fly to Illinois?

How many flights depart from Montreal Pierre Elliott Trudeau Intl Airport to Illinois on average per day?

18 flights are operational daily from Montreal Pierre Elliott Trudeau Intl Airport to Illinois as of November 2025. The most popular departure time for this route is 6:00AM, with 54% of flights per day taking off in the afternoon.

How many flights depart from Montreal Pierre Elliott Trudeau Intl Airport to Illinois on average per week?

The number of flights available between Montreal Pierre Elliott Trudeau Intl Airport and Illinois is 128 per week as of November 2025. The most frequent departure day is Mon, with 16% of weekly flights leaving on this day.

Cheap Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

When did momondo last update prices for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

How many operators does momondo search for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

How old do you have to be to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

What documentation or ID do you need to fly to Illinois?

What is the most popular plane model from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

Best airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Compare and see reviews for airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Montreal to Illinois?

Can I find flights from Montreal to Illinois with flexible booking policies on momondo?

How can momondo help me find flights from Montreal to Illinois?

I’m not ready to book a flight from Montreal to Illinois right now. Can momondo alert me if prices change?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo