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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from $168

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois departing on 9/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
9:10 am - 1:22 pm
YUL
-
ORD
5h 12m
1 stop
Air Canada Logo
7:25 am - 1:47 pm
ORD
-
YUL
5h 22m
1 stop
$284Air Canada
Sun, Aug 23 - Wed, Aug 26
Porter Airlines Logo
6:30 am - 9:45 am
YUL
-
MDW
4h 15m
1 stop
Porter Airlines Logo
3:15 pm - 8:10 pm
MDW
-
YUL
3h 55m
1 stop
$284Porter Airlines
Mon, Aug 10 - Mon, Aug 17
Air Canada Logo
9:10 am - 1:22 pm
YUL
-
ORD
5h 12m
1 stop
Air Canada Logo
7:25 am - 1:47 pm
ORD
-
YUL
5h 22m
1 stop
$285Air Canada
Sat, Aug 15 - Sat, Aug 22
Air Canada Logo
6:30 pm - 8:05 pm
YUL
-
ORD
2h 35mnonstop
Air Canada Logo
7:25 am - 1:45 pm
ORD
-
YUL
5h 20m
1 stop
$286Air Canada
Thu, Sep 3 - Tue, Sep 8
Porter Airlines Logo
10:35 am - 2:35 pm
YUL
-
MDW
5h 00m
1 stop
Porter Airlines Logo
3:20 pm - 8:10 pm
MDW
-
YUL
3h 50m
1 stop
$287Porter Airlines
Fri, Jul 24 - Tue, Jul 28
Air Canada Logo
8:40 am - 10:16 am
YUL
-
ORD
2h 36mnonstop
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
$287Air Canada
Sat, Jul 11 - Tue, Jul 14
Air Canada Logo
9:10 am - 1:23 pm
YUL
-
ORD
5h 13m
1 stop
Air Canada Logo
8:45 am - 12:00 pm
ORD
-
YUL
2h 15mnonstop
$288Air Canada
Thu, Oct 8 - Thu, Oct 15
American Airlines Logo
12:30 pm - 12:14 am
YUL
-
STL
12h 44m
1 stop
American Airlines Logo
6:00 am - 4:50 pm
STL
-
YUL
9h 50m
1 stop
$460American Airlines
Wed, Aug 12 - Tue, Aug 25
American Airlines Logo
12:30 pm - 12:14 am
YUL
-
STL
12h 44m
1 stop
American Airlines Logo
8:06 pm - 11:43 am
STL
-
YUL
14h 37m
1 stop
$481American Airlines
Wed, Aug 12 - Sat, Aug 22
Delta Logo
7:00 am - 12:56 pm
YUL
-
STL
6h 56m
1 stop
Delta Logo
7:20 am - 5:03 pm
STL
-
YUL
8h 43m
1 stop
$492Delta
Thu, Oct 15 - Mon, Oct 19

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United Airlines flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Our best United Airlines deals on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight tickets
United Airlines
Aug 12
YUL6:10 amMontreal Pierre Elliott Trudeau Intl
2h 41m
ORD7:51 amChicago O'Hare Intl
Aug 13
ORD7:11 amChicago O'Hare Intl
2h 29m
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
$311
United Airlines
Aug 11
YUL3:25 pmMontreal Pierre Elliott Trudeau Intl
8h 57m
1 stop
ORD11:22 pmChicago O'Hare Intl
Aug 15
ORD7:05 amChicago O'Hare Intl
14h 01m
1 stop
YUL10:06 pmMontreal Pierre Elliott Trudeau Intl
$317
United Airlines
Jul 9
YUL9:45 amMontreal Pierre Elliott Trudeau Intl
2h 35m
ORD11:20 amChicago O'Hare Intl
Jul 12
ORD7:10 amChicago O'Hare Intl
2h 30m
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
$341

American Airlines flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Our best American Airlines deals on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight tickets
American Airlines
Aug 15
YUL2:30 pmMontreal Pierre Elliott Trudeau Intl
6h 16m
1 stop
ORD7:46 pmChicago O'Hare Intl
Aug 18
ORD6:49 amChicago O'Hare Intl
15h 04m
1 stop
YUL10:53 pmMontreal Pierre Elliott Trudeau Intl
$314
American Airlines
Aug 12
YUL5:34 pmMontreal Pierre Elliott Trudeau Intl
2h 45m
ORD7:19 pmChicago O'Hare Intl
Aug 14
ORD8:25 pmChicago O'Hare Intl
12h 21m
1 stop
YUL9:46 amMontreal Pierre Elliott Trudeau Intl
$328
American Airlines
Aug 8
YUL7:55 amMontreal Pierre Elliott Trudeau Intl
16h 49m
1 stop
ORD11:44 pmChicago O'Hare Intl
Aug 13
ORD8:18 amChicago O'Hare Intl
2h 25m
YUL11:43 amMontreal Pierre Elliott Trudeau Intl
$333

momondo Fare Finder

 
Customize your flight search to find flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated June 29, 2026.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sun 8/23

9:10 am-1:22 pm

1 stop5h 12m

Chicago O'Hare Intl

Wed 8/26

7:25 am-1:47 pm

1 stop5h 22m

$284

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Mon 8/10

6:30 am-9:45 am

1 stop4h 15m

Chicago Midway

Mon 8/17

3:15 pm-8:10 pm

1 stop3h 55m

$284

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 8/15

9:10 am-1:22 pm

1 stop5h 12m

Chicago O'Hare Intl

Sat 8/22

7:25 am-1:47 pm

1 stop5h 22m

$285

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 9/3

6:30 pm-8:05 pm

Nonstop2h 35m

Chicago O'Hare Intl

Tue 9/8

7:25 am-1:45 pm

1 stop5h 20m

$286

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 7/24

10:35 am-2:35 pm

1 stop5h 00m

Chicago Midway

Tue 7/28

3:20 pm-8:10 pm

1 stop3h 50m

$287
Quickest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 7/11

8:40 am-10:16 am

Nonstop2h 36m

Chicago O'Hare Intl

Tue 7/14

8:45 am-12:00 pm

Nonstop2h 15m

$287

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 10/8

9:10 am-1:23 pm

1 stop5h 13m

Chicago O'Hare Intl

Thu 10/15

8:45 am-12:00 pm

Nonstop2h 15m

$288

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 8/12

12:30 pm-12:14 am

1 stop12h 44m

Lambert-St Louis

Tue 8/25

6:00 am-4:50 pm

1 stop9h 50m

$460

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 8/12

12:30 pm-12:14 am

1 stop12h 44m

Lambert-St Louis

Sat 8/22

8:06 pm-11:43 am

1 stop14h 37m

$481

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Thu 10/15

7:00 am-12:56 pm

1 stop6h 56m

Lambert-St Louis

Mon 10/19

7:20 am-5:03 pm

1 stop8h 43m

$492

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Montreal Pierre Elliott Trudeau Intl Airport 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

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Montreal Pierre Elliott Trudeau Intl Airport is in October. Flight prices, which tend to average around $60, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of October, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $65.

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

The cheapest day to depart from Montreal Pierre Elliott Trudeau Intl Airport to Illinois is on a Thursday when prices can be found for as low as $423. Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois on a Monday will generally be more expensive and average around $675. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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 Pierre Elliott Trudeau Intl Airport to Illinois during this time can be as low as $485. Flights in the morning are often more expensive with an average ticket price of $540.

What is the cheapest Montreal Pierre Elliott Trudeau Intl to Illinois flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl for the best Montreal Pierre Elliott Trudeau Intl - Illinois flight prices

How far in advance should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

You are more likely to see cheaper flights to Illinois from Montreal Pierre Elliott Trudeau Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $358 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Montreal Pierre Elliott Trudeau Intl Airport for as low as $229 on momondo.

What cabin class options are available on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flights?

There are 4 cabin classes available to choose from on Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Illinois flights?

You could potentially save up to 2% on your flight if you consider stops on a Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight.

Cheap Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Best Price Found

$235

Fastest flight time

2h 35m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Montreal Pierre Elliott Trudeau Intl Airport in the past 72 hours is $235. The best round-trip flight deal from Montreal Pierre Elliott Trudeau Intl Airport to Illinois found on momondo in the last 72 hours is $334.
The fastest flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois takes 2h 35m
Direct flights go from Montreal Pierre Elliott Trudeau Intl Airport to Illinois every day.
There are 98 airports in Illinois. From Montreal Pierre Elliott Trudeau Intl Airport there are direct flights to Chicago O'Hare Intl (ORD).
Search flight deals

Frequently asked questions about flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

  • When did momondo last update prices for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

    Prices for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

  • How old do you have to be to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

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

    The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

Best airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Compare and see reviews for airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $159Free CancellationRating
7.1
11,271 reviews
Search Air Canada flights
American AirlinesPriceFrom $189Free CancellationRating
7.1
11,766 reviews
Search American Airlines flights
United AirlinesPriceFrom $240Free CancellationRating
7.4
9,895 reviews
Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Montreal to Illinois for you.

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

Yes. momondo enables you to select and highlight flights to Illinois from Montreal with this policy.

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?

Of course. momondo tracks the price of Montreal to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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