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

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

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

The number of flights available between Montreal and Illinois is 112 per week as of April 2025. The most frequent departure day is Wed, with 25% 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 71% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

The number of flights available between Montreal and Illinois is 16 per day as of April 2025. The most frequent departure time is 9:00a.m., with 49% of daily flights leaving at noon.

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 April 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$ 210 Cheap Flights from Montreal to Illinois in 2025

1 adult

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Find the cheapest flights from Montreal to Illinois

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Cheap round-trip flights

These are some of the best round-trip flight deals from Montreal to Illinois that have been recently found on momondo from popular airlines, departing in the coming months.

12:30 p.m. - 2:05 p.m.YUL-ORD

2h 35mdirect

8:24 a.m. - 11:44 a.m.ORD-YUL

2h 20mdirect

C$ 321American Airlines

Find Deal

Thu, 22 May - Mon, 26 May

6:15 a.m. - 7:59 a.m.YUL-ORD

2h 44mdirect

7:19 a.m. - 10:40 a.m.ORD-YUL

2h 21mdirect

C$ 348United Airlines

Find Deal

Fri, 23 May - Mon, 26 May

1:10 p.m. - 4:54 p.m.YUL-MDW

4h 44m1 stop

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

3h 55m1 stop

C$ 348Porter Airlines

Find Deal

Fri, 20 Jun - Tue, 24 Jun

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

4h 14m1 stop

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

3h 55m1 stop

C$ 354Porter Airlines

Find Deal

Tue, 27 May - Tue, 3 Jun

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

4h 14m1 stop

9:40 a.m. - 4:00 p.m.MDW-YUL

5h 20m1 stop

C$ 357Porter Airlines

Find Deal

Thu, 22 May - Mon, 26 May

6:40 p.m. - 8:12 p.m.YUL-ORD

2h 32mdirect

7:19 a.m. - 10:40 a.m.ORD-YUL

2h 21mdirect

C$ 370Lufthansa

Find Deal

Thu, 22 May - Mon, 26 May

6:15 a.m. - 7:59 a.m.YUL-ORD

2h 44mdirect

7:19 a.m. - 10:40 a.m.ORD-YUL

2h 21mdirect

C$ 372Air Canada

Find Deal

Thu, 29 May - Wed, 4 Jun

6:40 p.m. - 8:12 p.m.YUL-ORD

2h 32mdirect

7:19 a.m. - 10:40 a.m.ORD-YUL

2h 21mdirect

C$ 377Air Canada

Find Deal

Thu, 22 May - Mon, 26 May

6:00 a.m. - 9:25 a.m.YUL-ORD

4h 25m1 stop

5:45 p.m. - 11:08 p.m.ORD-YUL

4h 23m1 stop

C$ 468WestJet

Find Deal

Fri, 10 Oct - Wed, 15 Oct

6:00 a.m. - 12:55 p.m.YUL-ORD

7h 55m1 stop

11:00 a.m. - 4:25 p.m.ORD-YUL

4h 25m1 stop

C$ 474WestJet

Find Deal

Thu, 3 Jul - Sun, 6 Jul

Air Canada flights from Montreal to Illinois

Our best Air Canada deals on Montreal to Illinois flight tickets

Air Canada

29 May

YUL6:15 a.m.Montreal Pierre Elliott Trudeau Intl

2h 44m

ORD7:59 a.m.Chicago O'Hare Intl

4 Jun

ORD7:19 a.m.Chicago O'Hare Intl

2h 21m

YUL10:40 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 372

Find similar

Air Canada

22 May

YUL6:40 p.m.Montreal Pierre Elliott Trudeau Intl

2h 32m

ORD8:12 p.m.Chicago O'Hare Intl

26 May

ORD7:19 a.m.Chicago O'Hare Intl

2h 21m

YUL10:40 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 377

Find similar

Air Canada

21 Jun

YUL10:15 a.m.Montreal Pierre Elliott Trudeau Intl

5h 49m

1 stop

ORD3:04 p.m.Chicago O'Hare Intl

24 Jun

ORD2:00 p.m.Chicago O'Hare Intl

5h 36m

1 stop

YUL8:36 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 395

Find similar

American Airlines flights from Montreal to Illinois

Our best American Airlines deals on Montreal to Illinois flight tickets

American Airlines

22 May

YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl

2h 35m

ORD2:05 p.m.Chicago O'Hare Intl

26 May

ORD8:24 a.m.Chicago O'Hare Intl

2h 20m

YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 321

Find similar

American Airlines

22 May

YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl

2h 35m

ORD2:05 p.m.Chicago O'Hare Intl

30 May

ORD7:00 p.m.Chicago O'Hare Intl

16h 21m

1 stop

YUL12:21 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 369

Find similar

American Airlines

22 May

YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl

2h 35m

ORD2:05 p.m.Chicago O'Hare Intl

26 May

ORD8:24 a.m.Chicago O'Hare Intl

2h 20m

YUL11:44 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 383

Find similar

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, March 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$ 409. If you don’t want to visit Illinois in March, then you should wait until May to fly from Montreal, when ticket prices are also cheap, with an average price of C$ 427.

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$ 758. 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$ 995.

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$ 804. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are C$ 871 on average. Flights to Illinois from Montreal in the evening 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 13 weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around C$ 550 when searching 13 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$ 449 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.

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$ 210
Fastest flight time	2h 31m
Direct flights	Every day
Airports in Illinois	3 airports

The best one-way flight to Illinois from Montreal in the past 72 hours is C$ 210. The best round-trip flight deal from Montreal to Illinois found on momondo in the last 72 hours is C$ 321.

The fastest flight from Montreal to Illinois takes 2h 31m

Direct flights go from Montreal to Illinois every day.

There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)

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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 April 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 28.33% of all bookings. The subsequent popular models are Embraer 175 at 17.18%, Boeing 737 MAX 8 at 8.43%, and Airbus A220-300 at 7.15%.

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$ 331	Free Cancellation	Rating 8.0 285 reviews	Search Porter Airlines flights
United Airlines	PriceFrom C$ 348	Free Cancellation	Rating 7.4 8,696 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 356	Free Cancellation	Rating 7.0 9,252 reviews	Search Air Canada flights
American Airlines	PriceFrom C$ 380	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
WestJet	PriceFrom C$ 441	Free Cancellation	Rating 7.2 2,826 reviews	Search WestJet 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.