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

Porter Airlines, United 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 American 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 74% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 3 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 May 2026, there are 3 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.

$163 Cheap Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in 2026

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

25 flights are operational daily from Montreal Pierre Elliott Trudeau Intl Airport to Illinois as of May 2026. The most popular departure time for this route is 9:00AM, with 47% of flights per day taking off at noon.

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 176 per week as of May 2026. The most frequent departure day is Fri, with 17% of weekly flights leaving on this day.

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

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

2:30 pm - 8:16 pm

YUL

ORD

6h 46m

1 stop

8:20 pm - 1:51 am

ORD

YUL

4h 31m

1 stop

$244Air Canada

Sat, Jun 13 - Sun, Jun 14

2:30 pm - 8:16 pm

YUL

ORD

6h 46m

1 stop

9:55 am - 5:51 pm

ORD

YUL

6h 56m

1 stop

$247Air Canada

Sat, Jun 13 - Sun, Jun 14

8:45 am - 1:10 pm

YUL

ORD

5h 25m

1 stop

8:20 pm - 1:51 am

ORD

YUL

4h 31m

1 stop

$248Air Canada

Sat, Jun 13 - Sun, Jun 14

8:45 am - 1:10 pm

YUL

ORD

5h 25m

1 stop

9:55 am - 5:51 pm

ORD

YUL

6h 56m

1 stop

$249Air Canada

Thu, Jun 11 - Sun, Jun 14

8:45 am - 1:10 pm

YUL

ORD

5h 25m

1 stop

9:55 am - 5:51 pm

ORD

YUL

6h 56m

1 stop

$252Air Canada

Sat, Jun 13 - Sun, Jun 14

8:40 am - 10:18 am

YUL

ORD

2h 38mnonstop

7:25 am - 1:45 pm

ORD

YUL

5h 20m

1 stop

$254Air Canada

Sat, Jun 6 - Tue, Jun 9

6:30 am - 11:00 am

YUL

ORD

5h 30m

1 stop

11:00 am - 4:30 pm

ORD

YUL

4h 30m

1 stop

$256Porter Airlines

Mon, Oct 19 - Wed, Oct 28

6:30 am - 2:35 pm

YUL

MDW

9h 05m

1 stop

10:15 am - 6:15 pm

MDW

YUL

7h 00m

1 stop

$289Porter Airlines

Fri, Jun 12 - Sun, Jun 14

7:00 am - 3:13 pm

YUL

STL

9h 13m

1 stop

9:24 am - 5:42 pm

STL

YUL

7h 18m

1 stop

$431Delta

Sat, Jul 11 - Wed, Jul 15

2:34 pm - 7:00 pm

YUL

STL

5h 26m

1 stop

6:15 am - 9:38 pm

STL

YUL

14h 23m

1 stop

$436American Airlines

Thu, Jun 25 - Sun, Jun 28

United Airlines flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

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

United Airlines

Jul 8

YUL9:45 amMontreal Pierre Elliott Trudeau Intl

2h 35m

ORD11:20 amChicago O'Hare Intl

Jul 11

ORD5:58 pmChicago O'Hare Intl

2h 28m

YUL9:26 pmMontreal Pierre Elliott Trudeau Intl

$299

United Airlines

May 29

YUL4:55 pmMontreal Pierre Elliott Trudeau Intl

2h 49m

ORD6:44 pmChicago O'Hare Intl

Jun 5

ORD3:53 pmChicago O'Hare Intl

7h 20m

1 stop

YUL12:13 amMontreal Pierre Elliott Trudeau Intl

$388

United Airlines

May 28

YUL6:10 amMontreal Pierre Elliott Trudeau Intl

2h 40m

ORD7:50 amChicago O'Hare Intl

Jun 4

ORD3:00 pmChicago O'Hare Intl

8h 13m

1 stop

YUL12:13 amMontreal Pierre Elliott Trudeau Intl

$389

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

Jun 13

YUL2:30 pmMontreal Pierre Elliott Trudeau Intl

6h 46m

1 stop

ORD8:16 pmChicago O'Hare Intl

Jun 14

ORD8:20 pmChicago O'Hare Intl

4h 31m

1 stop

YUL1:51 amMontreal Pierre Elliott Trudeau Intl

$244

Air Canada

Jun 13

YUL2:30 pmMontreal Pierre Elliott Trudeau Intl

6h 46m

1 stop

ORD8:16 pmChicago O'Hare Intl

Jun 14

ORD9:55 amChicago O'Hare Intl

6h 56m

1 stop

YUL5:51 pmMontreal Pierre Elliott Trudeau Intl

$247

Air Canada

Jun 13

YUL8:45 amMontreal Pierre Elliott Trudeau Intl

5h 25m

1 stop

ORD1:10 pmChicago O'Hare Intl

Jun 14

ORD8:20 pmChicago O'Hare Intl

4h 31m

1 stop

YUL1:51 amMontreal Pierre Elliott Trudeau Intl

$248

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

Cheapest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 6/13

2:30 pm-8:16 pm

1 stop6h 46m

Chicago O'Hare Intl

Sun 6/14

8:20 pm-1:51 am

1 stop4h 31m

$244

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 6/13

2:30 pm-8:16 pm

1 stop6h 46m

Chicago O'Hare Intl

Sun 6/14

9:55 am-5:51 pm

1 stop6h 56m

$247

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 6/13

8:45 am-1:10 pm

1 stop5h 25m

Chicago O'Hare Intl

Sun 6/14

8:20 pm-1:51 am

1 stop4h 31m

$248

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 6/11

8:45 am-1:10 pm

1 stop5h 25m

Chicago O'Hare Intl

Sun 6/14

9:55 am-5:51 pm

1 stop6h 56m

$249

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 6/13

8:45 am-1:10 pm

1 stop5h 25m

Chicago O'Hare Intl

Sun 6/14

9:55 am-5:51 pm

1 stop6h 56m

$252

Quickest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

8:40 am-10:18 am

Nonstop2h 38m

Chicago O'Hare Intl

Tue 6/9

7:25 am-1:45 pm

1 stop5h 20m

$254

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 10/19

6:30 am-11:00 am

1 stop5h 30m

Chicago O'Hare Intl

Wed 10/28

11:00 am-4:30 pm

1 stop4h 30m

$256

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 6/12

6:30 am-2:35 pm

1 stop9h 05m

Chicago Midway

Sun 6/14

10:15 am-6:15 pm

1 stop7h 00m

$289

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 7/11

7:00 am-3:13 pm

1 stop9h 13m

Lambert-St Louis

Wed 7/15

9:24 am-5:42 pm

1 stop7h 18m

$431

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 6/25

2:34 pm-7:00 pm

1 stop5h 26m

Lambert-St Louis

Sun 6/28

6:15 am-9:38 pm

1 stop14h 23m

$436

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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 October. Flight prices, which tend to average around $60, 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 October, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $65.

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 Thursday when prices can be found for as low as $431. Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois on a Monday will generally be more expensive and average around $680. 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 in the afternoon. Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois during this time can be as low as $509. Flights at noon are often more expensive with an average ticket price of $571.

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 from Montreal Pierre Elliott Trudeau Intl Airport 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 $348 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 $211 on momondo.

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

You could potentially save up to 1% on your flight if you consider stops on a Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight.

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	$237
Fastest flight time	2h 35m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Montreal Pierre Elliott Trudeau Intl Airport in the past 72 hours is $237. The best round-trip flight deal from Montreal Pierre Elliott Trudeau Intl Airport to Illinois found on momondo in the last 72 hours is $375.

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 are 98 airports in Illinois. From Montreal Pierre Elliott Trudeau Intl Airport there are direct flights to Chicago O'Hare Intl (ORD).

Search flight deals

Frequently asked questions about flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

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 May 2026, there are 3 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 26.38% of all bookings. The subsequent popular models are Embraer 170 at 17.63%, Embraer 175 at 12.80%, and Canadair (Bombardier) Regional Jet 900 at 10.59%.

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
Air Canada	PriceFrom $156	Free Cancellation	Rating 7.1 11,055 reviews	Search Air Canada flights
American Airlines	PriceFrom $189	Free Cancellation	Rating 7.1 11,657 reviews	Search American Airlines flights
United Airlines	PriceFrom $240	Free Cancellation	Rating 7.4 9,730 reviews	Search United 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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Flights to New Yorkfrom $83

Flights to Los Angelesfrom $51

Flights to Orlandofrom $53

Flights to Miamifrom $56

Flights to Chicagofrom $60

Flights to San Franciscofrom $56

Flights to Las Vegasfrom $49

Flights to Washington, D.C.from $55

Flights to Bostonfrom $74

Flights to Atlantafrom $54

Flights to Fort Lauderdalefrom $55

Flights to Dallasfrom $88

Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from $163

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

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United Airlines 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

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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.

See travel insights to Illinois from

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

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?

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

How far in advance should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

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

What is the cheapest airline that flies 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?

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

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

Frequently asked questions about flying 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?

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

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