How does KAYAK find such low prices on flights from Illinois to Montreal?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Montreal.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Montreal?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Montreal from Illinois is likely to change within 7 days, so travellers know whether to wait or book now.

What is the Hacker Fare option on flights from Illinois to Montreal?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Montreal with an airline and back to Illinois with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Montreal?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Montreal from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

C$ 205 CHEAP FLIGHTS from Illinois to Montreal (YUL)

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Flight Deals

Cheap Flights from Illinois to Montreal

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to Montreal

Thu, 4 Feb - Wed, 10 Feb

12:20 p.m. - 7:05 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

5h 45m1 stop Toronto Island

12:40 p.m. - 5:30 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

5h 50m1 stop Toronto Island

C$ 438Multiple Airlines

2 days ago

Fri, 4 Dec - Sat, 5 Dec

12:15 p.m. - 10:11 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

8h 56m1 stop Toronto Island

9:45 a.m. - 5:40 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

8h 55m1 stop Toronto Island

C$ 440Porter Airlines

3+ days ago

Sat, 6 Feb - Tue, 9 Feb

6:30 a.m. - 1:42 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

6h 12m1 stop Charlotte Douglas

12:13 p.m. - 2:17 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 04mdirect

C$ 441American Airlines

3+ days ago

Thu, 26 Nov - Tue, 1 Dec

6:41 a.m. - 1:42 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

6h 01m1 stop Charlotte Douglas

12:10 p.m. - 2:15 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 441American Airlines

3+ days ago

Thu, 26 Nov - Thu, 3 Dec

6:41 a.m. - 1:42 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

6h 01m1 stop Charlotte Douglas

12:08 p.m. - 2:13 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 441American Airlines

3+ days ago

Fri, 4 Dec - Wed, 13 Jan

12:15 p.m. - 10:11 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

8h 56m1 stop Toronto Island

12:40 p.m. - 5:30 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

5h 50m1 stop Toronto Island

C$ 443Multiple Airlines

3+ days ago

Fri, 22 Jan - Mon, 25 Jan

12:20 p.m. - 7:07 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

5h 47m1 stop Toronto Island

9:45 a.m. - 5:30 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

8h 45m1 stop Toronto Island

C$ 444Porter Airlines

3+ days ago

Wed, 2 Dec - Sat, 5 Dec

12:15 p.m. - 10:11 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

8h 56m1 stop Toronto Island

9:45 a.m. - 5:40 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

8h 55m1 stop Toronto Island

C$ 444Porter Airlines

3+ days ago

Thu, 10 Dec - Sun, 13 Dec

3:45 p.m. - 7:07 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 22mdirect

10:10 a.m. - 3:38 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

6h 28m1 stop Toronto Pearson Intl

C$ 445Air Canada

3+ days ago

Thu, 24 Dec - Fri, 1 Jan

7:05 a.m. - 10:17 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 12mdirect

11:10 a.m. - 3:38 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

5h 28m1 stop Toronto Pearson Intl

C$ 445Air Canada

3+ days ago

Recent last minute flight deals from Illinois to Montreal

Mon, 2 Nov - Tue, 10 Nov

7:05 a.m. - 10:17 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 12mdirect

1:10 p.m. - 5:43 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

5h 33m1 stop Toronto Pearson Intl

C$ 675Air Canada

2 days ago

Mon, 2 Nov - Tue, 10 Nov

7:05 a.m. - 10:17 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 12mdirect

12:10 p.m. - 2:15 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 715Multiple Airlines

2 days ago

Tue, 3 Nov - Thu, 3 Dec

8:08 a.m. - 11:25 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 17mdirect

12:08 p.m. - 2:13 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 718Porter Airlines

1 day ago

Tue, 3 Nov - Thu, 3 Dec

12:15 p.m. - 7:05 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

5h 50m1 stop Toronto Island

12:08 p.m. - 2:13 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 732Porter Airlines

1 day ago

Sun, 1 Nov - Fri, 6 Nov

7:05 a.m. - 10:17 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 12mdirect

7:45 a.m. - 1:20 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

6h 35m1 stop Toronto Island

C$ 732Air Canada

2 days ago

Tue, 3 Nov - Thu, 3 Dec

12:15 p.m. - 7:05 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

5h 50m1 stop Toronto Island

9:45 a.m. - 5:40 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

8h 55m1 stop Toronto Island

C$ 755Porter Airlines

1 day ago

Tue, 3 Nov - Thu, 3 Dec

6:29 a.m. - 12:23 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

4h 54m1 stop Philadelphia

12:08 p.m. - 2:13 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 760American Airlines

1 day ago

Tue, 3 Nov - Thu, 3 Dec

12:15 p.m. - 7:05 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

5h 50m1 stop Toronto Island

9:45 a.m. - 5:40 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

8h 55m1 stop Toronto Island

C$ 779Multiple Airlines

1 day ago

Tue, 3 Nov - Thu, 3 Dec

6:29 a.m. - 12:23 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

4h 54m1 stop Philadelphia

7:33 a.m. - 2:20 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

7h 47m1 stop Philadelphia

C$ 781American Airlines

1 day ago

Mon, 2 Nov - Wed, 4 Nov

12:15 p.m. - 7:05 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

5h 50m1 stop Toronto Island

6:45 a.m. - 1:01 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

7h 16m1 stop Toronto Pearson Intl

C$ 811Porter Airlines

3+ days ago

Recent direct flight deals from Illinois to Montreal

Sat, 14 Nov - Tue, 17 Nov

8:08 a.m. - 11:25 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 17mdirect

12:10 p.m. - 2:15 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 483American Airlines

3+ days ago

Sat, 5 Dec - Mon, 7 Dec

8:08 a.m. - 11:28 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 20mdirect

12:08 p.m. - 2:13 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 483American Airlines

3+ days ago

Sun, 15 Nov - Wed, 18 Nov

7:05 a.m. - 10:17 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 12mdirect

1:10 p.m. - 3:02 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

2h 52mdirect

C$ 483Air Canada

3+ days ago

Sat, 5 Dec - Mon, 7 Dec

8:08 a.m. - 11:28 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 20mdirect

12:08 p.m. - 2:13 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 508American Airlines

3+ days ago

Wed, 25 Nov - Wed, 25 Nov

7:05 a.m. - 10:17 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 12mdirect

6:10 p.m. - 7:52 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

2h 42mdirect

C$ 510Air Canada

3+ days ago

Wed, 25 Nov - Tue, 1 Dec

8:08 a.m. - 11:26 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 18mdirect

12:10 p.m. - 2:15 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 513American Airlines

3+ days ago

Sat, 6 Feb - Tue, 9 Feb

8:06 a.m. - 11:32 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 26mdirect

12:13 p.m. - 2:17 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 04mdirect

C$ 513American Airlines

3+ days ago

Thu, 10 Dec - Sun, 13 Dec

3:45 p.m. - 7:07 p.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 22mdirect

6:00 a.m. - 8:00 a.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 00mdirect

C$ 514Air Canada

3+ days ago

Fri, 11 Dec - Thu, 17 Dec

8:08 a.m. - 11:28 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 20mdirect

4:00 p.m. - 6:05 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

3h 05mdirect

C$ 524American Airlines

3+ days ago

Sun, 15 Nov - Thu, 19 Nov

7:05 a.m. - 10:17 a.m.Chicago Chicago O'Hare Intl-Montreal Montreal Pierre Elliott Trudeau Intl

2h 12mdirect

1:10 p.m. - 3:02 p.m.Montreal Montreal Pierre Elliott Trudeau Intl-Chicago Chicago O'Hare Intl

2h 52mdirect

C$ 528Air Canada

3+ days ago

Useful Info

Low season	April
High season	December
Cheapest flight	C$ 205

Best time to beat the crowds (18% less expensive on average)

Most popular time to fly and prices are also 24% lower on average.

Flight from Chicago to Montreal

MonyeeFlew with United Airlines-Sep 2026

Chicago is a large airport so it takes time to commute from one gate to another.

ScottFlew with Air Canada-Jun 2026

Make sure you have enough time between connecting flights so ½ of your baggage doesn't miss the flight and take another 24hrs to show up

valerieFlew with Air Canada-Jan 2025

“Meal” usually means more than a light snack. I thought what they served was an appetizer not the total meal. So I’d eat before or bring food.

How does KAYAK find such low prices on flights from Illinois to Montreal?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Montreal.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Montreal?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Montreal from Illinois is likely to change within 7 days, so travellers know whether to wait or book now.
What is the Hacker Fare option on flights from Illinois to Montreal?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Montreal with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Montreal?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Montreal from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Trois-Rivières

Laval

Sherbrooke

Montebello

Dorval

Saint-Sauveur

Brossard

Drummondville

Longueuil

Magog

Bromont

Boucherville

Sutton

North Hatley

Louiseville

Eastman

Waterloo

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C$ 205 Find Cheap Flights from Illinois to Montreal – Compare and Save

Cheap Flights from Illinois to Montreal

Recent round-trip flight deals from Illinois to Montreal

Recent one-way flight deals from Illinois to Montreal

Recent last minute flight deals from Illinois to Montreal

Recent direct flight deals from Illinois to Montreal

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Flights from Illinois to Montreal: the best tips from KAYAK users

FAQs for booking Illinois to Montreal flights

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More options for your flight to Montreal

Complete your trip to Montreal with a hotel stay or car rental

Information on your arrival and departure airports

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Find direct flights for Montreal

Flights from domestic origins to Illinois

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