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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from $142

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 11/3. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Cheap round-trip flights

Porter Airlines Logo
1:10 pm - 4:24 pmYUL-MDW
4h 14m1 stop
Porter Airlines Logo
9:35 am - 4:00 pmMDW-YUL
5h 25m1 stop
$235Porter Airlines
Find Deal
Fri, Oct 17 - Mon, Oct 20
Porter Airlines Logo
10:45 am - 4:24 pmYUL-MDW
6h 39m1 stop
Porter Airlines Logo
5:20 pm - 10:15 pmMDW-YUL
3h 55m1 stop
$236Porter Airlines
Find Deal
Thu, Oct 16 - Sun, Oct 19
Air Canada Logo
6:15 pm - 8:00 pmYUL-ORD
2h 45mnonstop
Air Canada Logo
7:15 am - 10:20 amORD-YUL
2h 05mnonstop
$241Air Canada
Find Deal
Wed, Oct 29 - Wed, Nov 5
Air Canada Logo
9:10 am - 1:01 pmYUL-ORD
4h 51m1 stop
Air Canada Logo
12:50 pm - 3:57 pmORD-YUL
2h 07mnonstop
$249Air Canada
Find Deal
Wed, Oct 29 - Wed, Nov 5
United Airlines Logo
9:45 am - 11:23 amYUL-ORD
2h 38mnonstop
United Airlines Logo
7:11 am - 10:40 amORD-YUL
2h 29mnonstop
$260United Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 7
United Airlines Logo
9:45 am - 11:23 amYUL-ORD
2h 38mnonstop
United Airlines Logo
2:08 pm - 5:26 pmORD-YUL
2h 18mnonstop
$262United Airlines
Find Deal
Sat, Oct 4 - Sun, Oct 5
Delta Logo
6:00 am - 12:28 pmYUL-MDW
7h 28m1 stop
Delta Logo
12:48 pm - 11:48 pmMDW-YUL
10h 00m1 stop
$289Delta
Find Deal
Sun, Oct 12 - Wed, Oct 22
American Airlines Logo
3:52 pm - 5:52 pmYUL-ORD
3h 00mnonstop
American Airlines Logo
6:35 pm - 1:46 pmORD-YUL
18h 11m1 stop
$294American Airlines
Find Deal
Fri, Nov 7 - Mon, Nov 10
American Airlines Logo
2:29 pm - 11:37 pmYUL-ORD
10h 08m1 stop
American Airlines Logo
6:46 am - 1:46 pmORD-YUL
6h 00m1 stop
$298American Airlines
Find Deal
Fri, Nov 7 - Tue, Nov 11
Delta Logo
7:00 am - 4:41 pmYUL-ORD
10h 41m1 stop
Delta Logo
4:09 pm - 11:48 pmORD-YUL
6h 39m1 stop
$306Delta
Find Deal
Thu, Oct 9 - Sat, Oct 11

Air Canada flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Our best Air Canada deals on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight tickets
Air Canada
Oct 29
YUL6:15 pmMontreal Pierre Elliott Trudeau Intl
2h 45m
ORD8:00 pmChicago O'Hare Intl
Nov 5
ORD7:15 amChicago O'Hare Intl
2h 05m
YUL10:20 amMontreal Pierre Elliott Trudeau Intl
$241
Find similar
Air Canada
Oct 29
YUL9:10 amMontreal Pierre Elliott Trudeau Intl
4h 51m
1 stop
ORD1:01 pmChicago O'Hare Intl
Nov 5
ORD12:50 pmChicago O'Hare Intl
2h 07m
YUL3:57 pmMontreal Pierre Elliott Trudeau Intl
$249
Find similar
Air Canada
Oct 29
YUL6:15 pmMontreal Pierre Elliott Trudeau Intl
2h 45m
ORD8:00 pmChicago O'Hare Intl
Nov 5
ORD2:00 pmChicago O'Hare Intl
5h 44m
2 stops
YUL8:44 pmMontreal Pierre Elliott Trudeau Intl
$250
Find similar

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
Oct 4
YUL9:45 amMontreal Pierre Elliott Trudeau Intl
2h 38m
ORD11:23 amChicago O'Hare Intl
Oct 7
ORD7:11 amChicago O'Hare Intl
2h 29m
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
$260
Find similar
United Airlines
Oct 4
YUL9:45 amMontreal Pierre Elliott Trudeau Intl
2h 38m
ORD11:23 amChicago O'Hare Intl
Oct 5
ORD2:08 pmChicago O'Hare Intl
2h 18m
YUL5:26 pmMontreal Pierre Elliott Trudeau Intl
$262
Find similar
United Airlines
Oct 18
YUL6:15 amMontreal Pierre Elliott Trudeau Intl
2h 46m
ORD8:01 amChicago O'Hare Intl
Oct 22
ORD7:11 amChicago O'Hare Intl
2h 29m
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
$266
Find similar

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 September 15, 2025.
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

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 10/17

1:10 pm-4:24 pm

1 stop4h 14m

Chicago Midway

Mon 10/20

9:35 am-4:00 pm

1 stop5h 25m

$235

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 10/16

10:45 am-4:24 pm

1 stop6h 39m

Chicago Midway

Sun 10/19

5:20 pm-10:15 pm

1 stop3h 55m

$236

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 10/29

6:15 pm-8:00 pm

Nonstop2h 45m

Chicago O'Hare Intl

Wed 11/5

7:15 am-10:20 am

Nonstop2h 05m

$241

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 10/29

9:10 am-1:01 pm

1 stop4h 51m

Chicago O'Hare Intl

Wed 11/5

12:50 pm-3:57 pm

Nonstop2h 07m

$249

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 10/4

9:45 am-11:23 am

Nonstop2h 38m

Chicago O'Hare Intl

Tue 10/7

7:11 am-10:40 am

Nonstop2h 29m

$260

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 10/4

9:45 am-11:23 am

Nonstop2h 38m

Chicago O'Hare Intl

Sun 10/5

2:08 pm-5:26 pm

Nonstop2h 18m

$262

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Sun 10/12

6:00 am-12:28 pm

1 stop7h 28m

Chicago Midway

Wed 10/22

12:48 pm-11:48 pm

1 stop10h 00m

$289

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 11/7

3:52 pm-5:52 pm

Nonstop3h 00m

Chicago O'Hare Intl

Mon 11/10

6:35 pm-1:46 pm

1 stop18h 11m

$294

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 11/7

2:29 pm-11:37 pm

1 stop10h 08m

Chicago O'Hare Intl

Tue 11/11

6:46 am-1:46 pm

1 stop6h 00m

$298

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 10/9

7:00 am-4:41 pm

1 stop10h 41m

Chicago O'Hare Intl

Sat 10/11

4:09 pm-11:48 pm

1 stop6h 39m

$306

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 June. Flight prices, which tend to average around $300, 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 June, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $312.

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 $469. Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois on a Sunday will generally be more expensive and average around $628. 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 at noon. Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois during this time can be as low as $494. Flights in the afternoon are often more expensive with an average ticket price of $548.

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 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 $382 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 $210 on momondo.

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

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

No. A direct flight is the cheapest option for a flight between Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

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

$276

Fastest flight time

2h 31m

Direct flights

Every day

Airports in Illinois

2 airports
The best one-way flight to Illinois from Montreal Pierre Elliott Trudeau Intl Airport in the past 72 hours is $276. The best round-trip flight deal from Montreal Pierre Elliott Trudeau Intl Airport to Illinois found on momondo in the last 72 hours is $391.
The fastest flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois takes 2h 31m
Direct flights go from Montreal Pierre Elliott Trudeau Intl Airport to Illinois every day.
There are 2 airports near Illinois: Chicago O'Hare Intl (ORD), Lambert-St Louis (STL)
Search flight deals

  • 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
United AirlinesPriceFrom $112Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
Air CanadaPriceFrom $178Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
Porter AirlinesPriceFrom $226Free CancellationRating
7.9
363 reviews
Search Porter Airlines flights
American AirlinesPriceFrom $262Free CancellationRating
7.2
10,000 reviews
Search American 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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