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.

$151 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

Sat, Oct 10 - Sun, Oct 18

11:45 am - 6:12 pmMDW Chicago Midway-YUL Montreal Pierre Elliott Trudeau Intl

5h 27m1 stop Toronto Island

10:35 am - 2:35 pmYUL Montreal Pierre Elliott Trudeau Intl-MDW Chicago Midway

5h 00m1 stop Toronto Island

$315Porter Airlines

Sat, Oct 17 - Mon, Oct 19

11:45 am - 6:12 pmMDW Chicago Midway-YUL Montreal Pierre Elliott Trudeau Intl

5h 27m1 stop Toronto Island

6:30 am - 11:00 amYUL Montreal Pierre Elliott Trudeau Intl-MDW Chicago Midway

5h 30m1 stop Toronto Island

$315Porter Airlines

Thu, Nov 5 - Sun, Nov 8

12:20 pm - 7:05 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 45m1 stop Toronto Island

7:10 am - 1:13 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

7h 03m1 stop Toronto Pearson Intl

$315Multiple Airlines

Sat, Sep 26 - Sat, Sep 26

8:45 am - 12:00 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 15mnonstop

2:10 pm - 7:48 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

6h 38m1 stop Toronto Pearson Intl

$316Air Canada

Mon, Jan 25 - Sat, Jan 30

4:30 pm - 10:00 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

4h 30m1 stop Toronto Pearson Intl

9:25 am - 11:07 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 42mnonstop

$319Air Canada

Fri, Oct 30 - Mon, Nov 2

12:20 pm - 7:05 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 45m1 stop Toronto Island

11:10 am - 3:38 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

5h 28m1 stop Toronto Pearson Intl

$319Multiple Airlines

Thu, Nov 5 - Sun, Nov 8

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

$332American Airlines

Mon, Nov 2 - Tue, Nov 3

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

$332American Airlines

Fri, Dec 4 - Sun, Dec 6

5:05 pm - 11:33 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

5h 28m1 stop Detroit Metropolitan Wayne County

6:00 am - 10:59 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

5h 59m1 stop Detroit Metropolitan Wayne County

$357Delta

Sun, Nov 8 - Wed, Nov 11

7:00 am - 4:15 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 15m1 stop Detroit Metropolitan Wayne County

12:50 pm - 6:30 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

6h 40m1 stop Detroit Metropolitan Wayne County

$357Delta

Recent last minute flight deals from Illinois to Montreal

Sat, Sep 12 - Wed, Sep 23

11:45 am - 6:12 pmMDW Chicago Midway-YUL Montreal Pierre Elliott Trudeau Intl

5h 27m1 stop Toronto Island

6:30 am - 11:00 amYUL Montreal Pierre Elliott Trudeau Intl-MDW Chicago Midway

5h 30m1 stop Toronto Island

$407Porter Airlines

Sat, Sep 12 - Tue, Sep 22

11:45 am - 6:12 pmMDW Chicago Midway-YUL Montreal Pierre Elliott Trudeau Intl

5h 27m1 stop Toronto Island

9:00 am - 2:35 pmYUL Montreal Pierre Elliott Trudeau Intl-MDW Chicago Midway

6h 35m1 stop Toronto Island

$407Porter Airlines

Sat, Sep 12 - Fri, Sep 25

11:05 am - 2:20 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 15mnonstop

8:40 am - 10:15 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 35mnonstop

$417Air Canada

Wed, Sep 9 - Sun, Oct 11

3:40 pm - 7:01 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 21mnonstop

8:35 am - 10:12 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 37mnonstop

$417Air Canada

Tue, Sep 8 - Sat, Sep 19

6:45 am - 3:29 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

7h 44m1 stop Philadelphia

5:34 pm - 7:19 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 45mnonstop

$433American Airlines

Sat, Sep 12 - Wed, Sep 16

6:29 am - 3:29 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

8h 00m1 stop Philadelphia

12:31 pm - 2:11 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 40mnonstop

$433American Airlines

Sat, Sep 12 - Wed, Sep 16

6:00 pm - 11:27 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

4h 27m1 stop Detroit Metropolitan Wayne County

2:25 pm - 7:15 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

5h 50m1 stop New York LaGuardia

$448Delta

Sat, Sep 12 - Tue, Sep 15

11:17 am - 4:19 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

4h 02m1 stop Detroit Metropolitan Wayne County

2:25 pm - 7:15 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

5h 50m1 stop New York LaGuardia

$448Delta

Fri, Sep 11 - Thu, Sep 17

5:56 pm - 9:26 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 30mnonstop

8:40 am - 10:15 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 35mnonstop

$539Multiple Airlines

Fri, Sep 11 - Tue, Sep 15

11:15 am - 11:50 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

11h 35m2 stops Orlando Atlanta Hartsfield-Jackson

7:30 am - 1:23 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

6h 53m1 stop Toronto Pearson Intl

$564Multiple Airlines

Recent direct flight deals from Illinois to Montreal

Thu, Oct 22 - Mon, Oct 26

11:05 am - 2:20 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 15mnonstop

5:34 pm - 7:19 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 45mnonstop

$323Multiple Airlines

Thu, Nov 5 - Sun, Nov 8

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

$332American Airlines

Thu, Oct 1 - Tue, Oct 6

11:05 am - 2:20 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 15mnonstop

6:30 pm - 8:12 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 42mnonstop

$332Air Canada

Wed, Oct 14 - Sat, Oct 24

3:40 pm - 7:01 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 21mnonstop

8:40 am - 10:17 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 37mnonstop

$332Air Canada

Mon, Nov 2 - Tue, Nov 3

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

$332American Airlines

Tue, Nov 24 - Fri, Nov 27

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

2h 23mnonstop

4:45 pm - 6:46 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 01mnonstop

$375United Airlines

Wed, Sep 30 - Wed, Oct 7

7:11 am - 10:40 amORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 29mnonstop

6:10 am - 7:51 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 41mnonstop

$375United Airlines

Thu, Oct 1 - Sun, Oct 4

8:45 am - 12:00 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 15mnonstop

8:40 am - 10:17 amYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

2h 37mnonstop

$398Lufthansa

Sun, Dec 27 - Tue, Dec 29

11:43 am - 3:07 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 24mnonstop

4:00 pm - 6:05 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 05mnonstop

$526Porter Airlines

Mon, Dec 28 - Tue, Dec 29

11:43 am - 3:07 pmORD Chicago O'Hare Intl-YUL Montreal Pierre Elliott Trudeau Intl

2h 24mnonstop

4:00 pm - 6:05 pmYUL Montreal Pierre Elliott Trudeau Intl-ORD Chicago O'Hare Intl

3h 05mnonstop

$526Porter Airlines

Useful Info

Low season	February
High season	December
Cheapest flight	$151

Best time to beat the crowds with an average 11% drop in price.

Most popular time to fly with an average 4% increase in price.

Flight from Chicago O'Hare Airport to Montreal

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

$151 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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Cheapest flight

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

FAQs for booking Illinois to Montreal flights

Traveling to a place near Montreal?

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

Cabin class types available on flights to Montreal

Find direct flights for Montreal

Flights from domestic origins to Illinois

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