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 travelers 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.

$147 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

Wed, Jan 13 - Wed, Jan 20

12:20 pm - 7:07 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 47m1 stop Toronto Island

12:40 pm - 5:30 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

5h 50m1 stop Toronto Island

$327Porter Airlines

Tue, Dec 1 - Tue, Jan 12

12:15 pm - 7:06 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 51m1 stop Toronto Island

12:40 pm - 5:30 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

5h 50m1 stop Toronto Island

$328Porter Airlines

Sat, Dec 12 - Sun, Dec 13

3:45 pm - 7:07 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 22mnonstop

9:10 am - 3:38 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

7h 28m1 stop Toronto Pearson Intl

$344Air Canada

Sat, Dec 12 - Mon, Dec 14

3:45 pm - 7:07 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 22mnonstop

10:10 am - 3:38 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

6h 28m1 stop Toronto Pearson Intl

$344Air Canada

Mon, Jan 11 - Sun, Jan 24

12:20 pm - 7:07 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 47m1 stop Toronto Island

12:40 pm - 5:30 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

5h 50m1 stop Toronto Island

$351Multiple Airlines

Thu, Feb 4 - Mon, Feb 8

12:20 pm - 7:07 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 47m1 stop Toronto Island

12:40 pm - 5:30 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

5h 50m1 stop Toronto Island

$356Multiple Airlines

Tue, Dec 1 - Wed, Dec 9

8:08 am - 11:26 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 18mnonstop

12:08 pm - 2:13 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 05mnonstop

$386American Airlines

Mon, Nov 30 - Wed, Dec 16

8:08 am - 11:26 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 18mnonstop

12:08 pm - 2:13 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 05mnonstop

$397American Airlines

Sat, Dec 12 - Mon, Dec 14

5:33 pm - 11:41 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 08m1 stop Minneapolis St Paul

6:39 pm - 11:56 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

6h 17m1 stop Atlanta Hartsfield-Jackson

$411Delta

Thu, Dec 3 - Mon, Dec 7

2:41 pm - 11:33 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

7h 52m1 stop Detroit Metropolitan Wayne County

6:39 pm - 11:56 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

6h 17m1 stop Atlanta Hartsfield-Jackson

$411Delta

Recent last minute flight deals from Illinois to Montreal

Wed, Nov 11 - Sun, Nov 15

8:08 am - 11:25 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 17mnonstop

2:15 pm - 7:41 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

6h 26m1 stop Toronto Pearson Intl

$478Porter Airlines

Wed, Nov 11 - Wed, Nov 11

8:08 am - 11:25 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 17mnonstop

6:35 pm - 11:54 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

6h 19m1 stop Atlanta Hartsfield-Jackson

$521Multiple Airlines

Wed, Nov 11 - Tue, Nov 17

7:05 am - 10:17 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 12mnonstop

9:10 am - 3:38 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

7h 28m1 stop Toronto Pearson Intl

$531Air Canada

Wed, Nov 11 - Tue, Nov 17

1:55 pm - 9:45 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

6h 50m1 stop Toronto Island

9:10 am - 3:38 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

7h 28m1 stop Toronto Pearson Intl

$533Air Canada

Tue, Nov 10 - Tue, Nov 17

12:15 pm - 7:05 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 50m1 stop Toronto Island

6:10 pm - 7:52 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 42mnonstop

$545Multiple Airlines

Sun, Nov 8 - Tue, Nov 17

8:08 am - 11:25 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 17mnonstop

12:10 pm - 2:15 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 05mnonstop

$548Porter Airlines

Sat, Nov 7 - Sun, Nov 15

1:27 pm - 11:25 pmMDW Chicago Midway-YUL Montreal Pierre Elliott Trudeau Intl

8h 58m1 stop Detroit Metropolitan Wayne County

6:00 am - 12:51 pmYUL Montreal Pierre Elliott Trudeau Intl-MDW Chicago Midway

7h 51m1 stop Detroit Metropolitan Wayne County

$559Delta

Sat, Nov 7 - Sun, Nov 15

7:00 am - 11:57 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

3h 57m1 stop Detroit Metropolitan Wayne County

7:10 am - 4:41 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

10h 31m1 stop Minneapolis St Paul

$559Delta

Tue, Nov 10 - Wed, Nov 18

5:54 pm - 9:17 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 23mnonstop

6:00 am - 8:00 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 00mnonstop

$585United Airlines

Tue, Nov 10 - Tue, Nov 17

10:37 am - 2:00 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 23mnonstop

6:00 am - 8:00 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 00mnonstop

$585United Airlines

Recent direct flight deals from Illinois to Montreal

Tue, Dec 1 - Wed, Dec 9

8:08 am - 11:26 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 18mnonstop

12:08 pm - 2:13 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 05mnonstop

$386American Airlines

Fri, Dec 25 - Fri, Dec 25

7:05 am - 10:17 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 12mnonstop

1:10 pm - 3:02 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 52mnonstop

$386Air Canada

Sun, Nov 29 - Fri, Dec 4

7:05 am - 10:17 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 12mnonstop

6:10 pm - 7:52 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 42mnonstop

$386Air Canada

Sun, Nov 29 - Fri, Dec 4

8:08 am - 11:26 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 18mnonstop

12:08 pm - 2:13 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 05mnonstop

$397American Airlines

Thu, Dec 10 - Sun, Dec 13

7:05 am - 10:17 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 12mnonstop

6:00 am - 8:00 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 00mnonstop

$456Multiple Airlines

Sat, Feb 6 - Tue, Feb 9

5:45 pm - 9:17 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 32mnonstop

6:00 am - 8:07 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 07mnonstop

$487United Airlines

Tue, Mar 2 - Tue, Mar 9

5:47 pm - 9:08 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 21mnonstop

6:10 am - 7:50 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 40mnonstop

$487United Airlines

Thu, Apr 15 - Sat, Apr 17

10:40 am - 1:51 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 11mnonstop

6:10 pm - 7:53 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 43mnonstop

$497Multiple Airlines

Sat, Mar 13 - Fri, Mar 19

8:06 am - 11:26 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 20mnonstop

12:06 pm - 2:11 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 05mnonstop

$517Porter Airlines

Wed, Apr 7 - Sun, Apr 11

8:18 am - 11:44 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 26mnonstop

12:30 pm - 2:10 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 40mnonstop

$520Porter Airlines

Useful Info

Low season	February
High season	December
Cheapest flight	$147

Best time to beat the crowds with an average 15% drop in price.

Most popular time to fly with an average 6% increase in price.

Flight from Chicago O'Hare Airport 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 travelers 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

Brossard

Bromont

Dorval

Longueuil

Saint-Sauveur

Montebello

Boucherville

Sutton

North Hatley

Louiseville

Eastman

Waterloo

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YUL

$147 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

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