How many flights depart from Montreal to Illinois on average per day?

The number of flights available between Montreal and Illinois is 18 per day as of December 2025. The most frequent departure time is 6:00a.m., with 48% of daily flights leaving in the afternoon.

How many flights depart from Montreal to Illinois on average per week?

The number of flights available between Montreal and Illinois is 129 per week as of December 2025. The most frequent departure day is Tue, with 16% of weekly flights leaving on this day.

Which airlines fly to Illinois?

Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Illinois from Montreal according to our data. Air Canada is the first choice among our users, with 68% of people opting to fly with this airline when travelling 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.

What is the cheapest airline that flies from Montreal to Illinois?

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

When did momondo last update prices for flights from Montreal to Illinois?

Prices for flights from Montreal to Illinois are refreshed on a daily basis.

How many operators does momondo search for flights from Montreal to Illinois?

There are 5 operators available for flights from Montreal to Illinois as of December 2025.

How old do you have to be to fly from Montreal to Illinois?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Illinois.

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

The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 185 Cheap Flights from Montreal to Illinois in 2025/26

1 adult

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Find the cheapest flights from Montreal to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:45 a.m. - 10:05 a.m.

YUL

MDW

4h 20m1 stop

11:00 a.m. - 4:30 p.m.

MDW

YUL

4h 30m1 stop

C$ 264Porter Airlines

Fri, 13 Feb - Mon, 16 Feb

7:30 a.m. - 8:15 p.m.

YUL

ORD

13h 45m1 stop

7:56 p.m. - 1:45 p.m.

ORD

YUL

16h 49m1 stop

C$ 265American Airlines

Mon, 2 Feb - Sat, 7 Feb

6:25 p.m. - 8:10 p.m.

YUL

ORD

2h 45mdirect

7:15 a.m. - 10:20 a.m.

ORD

YUL

2h 05mdirect

C$ 270Air Canada

Fri, 13 Feb - Mon, 16 Feb

6:45 a.m. - 10:05 a.m.

YUL

MDW

4h 20m1 stop

11:00 a.m. - 4:30 p.m.

MDW

YUL

4h 30m1 stop

C$ 270Porter Airlines

Thu, 19 Feb - Mon, 23 Feb

3:55 p.m. - 5:55 p.m.

YUL

ORD

3h 00mdirect

1:53 p.m. - 10:44 p.m.

ORD

YUL

7h 51m1 stop

C$ 277American Airlines

Fri, 13 Feb - Mon, 16 Feb

7:00 a.m. - 1:22 p.m.

YUL

ORD

7h 22m1 stop

6:05 a.m. - 1:45 p.m.

ORD

YUL

6h 40m1 stop

C$ 279American Airlines

Thu, 5 Feb - Sun, 8 Feb

6:00 a.m. - 9:41 a.m.

YUL

ORD

4h 41m1 stop

6:15 a.m. - 1:42 p.m.

ORD

YUL

6h 27m1 stop

C$ 290KLM

Thu, 5 Feb - Sun, 8 Feb

6:00 a.m. - 9:41 a.m.

YUL

ORD

4h 41m1 stop

12:50 p.m. - 4:01 p.m.

ORD

YUL

2h 11mdirect

C$ 294Air Canada

Thu, 5 Feb - Sun, 8 Feb

2:40 p.m. - 9:30 p.m.

YUL

ORD

7h 50m1 stop

6:15 a.m. - 1:40 p.m.

ORD

YUL

6h 25m1 stop

C$ 297Delta

Sat, 14 Feb - Tue, 17 Feb

7:00 a.m. - 3:21 p.m.

YUL

MDW

9h 21m1 stop

10:49 a.m. - 4:53 p.m.

MDW

YUL

5h 04m1 stop

C$ 297Delta

Sat, 14 Feb - Tue, 17 Feb

American Airlines flights from Montreal to Illinois

Our best American Airlines deals on Montreal to Illinois flight tickets

American Airlines

2 Feb

YUL7:30 a.m.Montreal Pierre Elliott Trudeau Intl

13h 45m

1 stop

ORD8:15 p.m.Chicago O'Hare Intl

7 Feb

ORD7:56 p.m.Chicago O'Hare Intl

16h 49m

1 stop

YUL1:45 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 265

Find similar

American Airlines

13 Feb

YUL3:55 p.m.Montreal Pierre Elliott Trudeau Intl

3h 00m

ORD5:55 p.m.Chicago O'Hare Intl

16 Feb

ORD8:10 a.m.Chicago O'Hare Intl

13h 34m

1 stop

YUL10:44 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 277

Find similar

American Airlines

5 Feb

YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl

7h 22m

1 stop

ORD1:22 p.m.Chicago O'Hare Intl

8 Feb

ORD6:05 a.m.Chicago O'Hare Intl

6h 40m

1 stop

YUL1:45 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 279

Find similar

Air Canada flights from Montreal to Illinois

Our best Air Canada deals on Montreal to Illinois flight tickets

Air Canada

14 Feb

YUL1:10 p.m.Montreal Pierre Elliott Trudeau Intl

2h 45m

ORD2:55 p.m.Chicago O'Hare Intl

15 Feb

ORD7:15 a.m.Chicago O'Hare Intl

2h 05m

YUL10:20 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 270

Find similar

Air Canada

5 Feb

YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl

4h 41m

1 stop

ORD9:41 a.m.Chicago O'Hare Intl

8 Feb

ORD12:50 p.m.Chicago O'Hare Intl

2h 11m

YUL4:01 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 294

Find similar

Air Canada

28 Jan

YUL6:25 p.m.Montreal Pierre Elliott Trudeau Intl

2h 45m

ORD8:10 p.m.Chicago O'Hare Intl

2 Feb

ORD7:15 a.m.Chicago O'Hare Intl

2h 05m

YUL10:20 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 312

Find similar

Fly from

Fly to

Route

Depart

Return

Price

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 13/2

6:45 a.m.-10:05 a.m.

1 stop4h 20m

Chicago Midway

Mon 16/2

11:00 a.m.-4:30 p.m.

1 stop4h 30m

C$ 264

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 2/2

7:30 a.m.-8:15 p.m.

1 stop13h 45m

Chicago O'Hare Intl

Sat 7/2

7:56 p.m.-1:45 p.m.

1 stop16h 49m

C$ 265

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 13/2

6:25 p.m.-8:10 p.m.

Nonstop2h 45m

Chicago O'Hare Intl

Mon 16/2

7:15 a.m.-10:20 a.m.

Nonstop2h 05m

C$ 270

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 19/2

6:45 a.m.-10:05 a.m.

1 stop4h 20m

Chicago Midway

Mon 23/2

11:00 a.m.-4:30 p.m.

1 stop4h 30m

C$ 270

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 13/2

3:55 p.m.-5:55 p.m.

Nonstop3h 00m

Chicago O'Hare Intl

Mon 16/2

1:53 p.m.-10:44 p.m.

1 stop7h 51m

C$ 277

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 5/2

7:00 a.m.-1:22 p.m.

1 stop7h 22m

Chicago O'Hare Intl

Sun 8/2

6:05 a.m.-1:45 p.m.

1 stop6h 40m

C$ 279

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 5/2

6:00 a.m.-9:41 a.m.

1 stop4h 41m

Chicago O'Hare Intl

Sun 8/2

6:15 a.m.-1:42 p.m.

1 stop6h 27m

C$ 290

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 5/2

6:00 a.m.-9:41 a.m.

1 stop4h 41m

Chicago O'Hare Intl

Sun 8/2

12:50 p.m.-4:01 p.m.

Nonstop2h 11m

C$ 294

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 14/2

2:40 p.m.-9:30 p.m.

1 stop7h 50m

Chicago O'Hare Intl

Tue 17/2

6:15 a.m.-1:40 p.m.

1 stop6h 25m

C$ 297

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Sat 14/2

7:00 a.m.-3:21 p.m.

1 stop9h 21m

Chicago Midway

Tue 17/2

10:49 a.m.-4:53 p.m.

1 stop5h 04m

C$ 297

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 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?

In general, September is the cheapest month to fly from Montreal to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 389. If you don’t want to visit Illinois in September, then you should wait until March to fly from Montreal, when ticket prices are also cheap, with an average price of C$ 390.

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

According to our data, Thursday is the cheapest day to fly to Illinois from Montreal. The lowest ticket price found for a Thursday departure recently was C$ 707. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Illinois is Monday, with ticket prices averaging around C$ 955.

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 to Illinois during this time can be as low as C$ 735. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,094 on average. Flights to Illinois from Montreal at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Montreal to Illinois flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl for the best Montreal - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around C$ 488 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Montreal for as low as C$ 319 on momondo.

What cabin class options are available on Montreal to Illinois flights?

There are 4 cabin classes available to choose from on Montreal 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 to Illinois flights?

You could potentially save up to 19% on your flight if you consider stops on a Montreal to Illinois flight.

Cheap Montreal to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to Illinois

Best price found	C$ 284
Fastest flight time	2h 35m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Montreal in the past 72 hours is C$ 284. The best round-trip flight deal from Montreal to Illinois found on momondo in the last 72 hours is C$ 642.

The fastest flight from Montreal to Illinois takes 2h 35m

Direct flights go from Montreal to Illinois every day.

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

Search flight deals

When did momondo last update prices for flights from Montreal to Illinois?
Prices for flights from Montreal to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Montreal to Illinois?
There are 5 operators available for flights from Montreal to Illinois as of December 2025.
How old do you have to be to fly from Montreal to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Montreal to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Montreal to Illinois is Embraer 175 (Enhanced Winglets), representing 29.93% of all bookings. The subsequent popular models are Canadair (Bombardier) Regional Jet 900 at 17.33%, Embraer 170 at 13.45%, and Embraer 175 at 7.03%.

Best airlines flying from Montreal to Illinois

Compare and see reviews for airlines that fly from Montreal to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Porter Airlines	PriceFrom C$ 196	Free Cancellation	Rating 8.0 399 reviews	Search Porter Airlines flights
American Airlines	PriceFrom C$ 203	Free Cancellation	Rating 7.2 11,053 reviews	Search American Airlines flights
Air Canada	PriceFrom C$ 257	Free Cancellation	Rating 7.1 10,552 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 265	Free Cancellation	Rating 7.4 9,102 reviews	Search United Airlines flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Illinois from Montreal.

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

Yes. All flights to Illinois from Montreal on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

If you are not ready to book a flight from Montreal to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.