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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from C$ 239

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 26/9. 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
4:30 p.m. - 8:29 p.m.
YUL
-
ORD
4h 59m
1 stop
Air Canada Logo
2:00 p.m. - 7:47 p.m.
ORD
-
YUL
4h 47m
1 stop
C$ 394Air Canada
Tue, 25 Aug - Mon, 31 Aug
Air Canada Logo
6:30 p.m. - 8:12 p.m.
YUL
-
ORD
2h 42mdirect
Air Canada Logo
8:45 a.m. - 12:00 p.m.
ORD
-
YUL
2h 15mdirect
C$ 400Air Canada
Fri, 16 Oct - Tue, 20 Oct
Porter Airlines Logo
6:30 a.m. - 9:40 a.m.
YUL
-
MDW
4h 10m
1 stop
Porter Airlines Logo
3:20 p.m. - 10:10 p.m.
MDW
-
YUL
5h 50m
1 stop
C$ 401Porter Airlines
Tue, 14 Jul - Wed, 15 Jul
Air Canada Logo
4:30 p.m. - 8:21 p.m.
YUL
-
ORD
4h 51m
1 stop
Air Canada Logo
7:25 a.m. - 1:46 p.m.
ORD
-
YUL
5h 21m
1 stop
C$ 402Air Canada
Tue, 3 Nov - Thu, 5 Nov
Porter Airlines Logo
10:35 a.m. - 2:35 p.m.
YUL
-
MDW
5h 00m
1 stop
Porter Airlines Logo
3:15 p.m. - 10:10 p.m.
MDW
-
YUL
5h 55m
1 stop
C$ 404Porter Airlines
Fri, 7 Aug - Mon, 10 Aug
Air Canada Logo
9:10 a.m. - 1:22 p.m.
YUL
-
ORD
5h 12m
1 stop
Air Canada Logo
7:25 a.m. - 1:47 p.m.
ORD
-
YUL
5h 22m
1 stop
C$ 404Air Canada
Sun, 23 Aug - Wed, 26 Aug
Air Canada Logo
9:10 a.m. - 1:22 p.m.
YUL
-
ORD
5h 12m
1 stop
Air Canada Logo
7:25 a.m. - 1:47 p.m.
ORD
-
YUL
5h 22m
1 stop
C$ 405Air Canada
Sun, 23 Aug - Sun, 30 Aug
American Airlines Logo
12:31 p.m. - 12:27 a.m.
YUL
-
STL
12h 56m
1 stop
American Airlines Logo
7:27 a.m. - 4:53 p.m.
STL
-
YUL
8h 26m
1 stop
C$ 650American Airlines
Wed, 23 Sep - Sat, 26 Sep
American Airlines Logo
12:30 p.m. - 12:14 a.m.
YUL
-
STL
12h 44m
1 stop
American Airlines Logo
6:00 a.m. - 4:50 p.m.
STL
-
YUL
9h 50m
1 stop
C$ 654American Airlines
Wed, 12 Aug - Tue, 25 Aug
United Airlines Logo
6:10 a.m. - 12:03 p.m.
YUL
-
STL
6h 53m
1 stop
United Airlines Logo
8:00 a.m. - 7:45 p.m.
STL
-
YUL
10h 45m
2 stops
C$ 699United Airlines
Sat, 5 Sep - Fri, 11 Sep

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Delta flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Our best Delta deals on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight tickets
Delta
5 Aug
YUL12:47 p.m.Montreal Pierre Elliott Trudeau Intl
8h 43m
1 stop
ORD8:30 p.m.Chicago O'Hare Intl
12 Aug
ORD5:20 p.m.Chicago O'Hare Intl
5h 10m
1 stop
YUL11:30 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 445
Delta
11 Jul
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
7h 38m
1 stop
MDW12:38 p.m.Chicago Midway
18 Jul
MDW1:18 p.m.Chicago Midway
9h 07m
1 stop
YUL11:25 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 446
Delta
11 Jul
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
7h 38m
1 stop
MDW12:38 p.m.Chicago Midway
20 Jul
MDW1:18 p.m.Chicago Midway
9h 07m
1 stop
YUL11:25 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 475

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
15 Sep
YUL5:34 p.m.Montreal Pierre Elliott Trudeau Intl
2h 45m
ORD7:19 p.m.Chicago O'Hare Intl
20 Sep
ORD6:45 a.m.Chicago O'Hare Intl
15h 09m
1 stop
YUL10:54 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 466
American Airlines
15 Jul
YUL5:30 p.m.Montreal Pierre Elliott Trudeau Intl
2h 44m
ORD7:14 p.m.Chicago O'Hare Intl
22 Jul
ORD1:18 p.m.Chicago O'Hare Intl
2h 29m
YUL4:47 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 499
American Airlines
10 Jul
YUL10:30 a.m.Montreal Pierre Elliott Trudeau Intl
14h 00m
1 stop
ORD11:30 p.m.Chicago O'Hare Intl
12 Jul
ORD5:07 a.m.Chicago O'Hare Intl
16h 49m
1 stop
YUL10:56 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 505

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 96,600 searches. Data last updated 1 July 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

Tue 25/8

4:30 p.m.-8:29 p.m.

1 stop4h 59m

Chicago O'Hare Intl

Mon 31/8

2:00 p.m.-7:47 p.m.

1 stop4h 47m

C$ 394
Quickest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 16/10

6:30 p.m.-8:12 p.m.

Nonstop2h 42m

Chicago O'Hare Intl

Tue 20/10

8:45 a.m.-12:00 p.m.

Nonstop2h 15m

C$ 400

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Tue 14/7

6:30 a.m.-9:40 a.m.

1 stop4h 10m

Chicago Midway

Wed 15/7

3:20 p.m.-10:10 p.m.

1 stop5h 50m

C$ 401

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 3/11

4:30 p.m.-8:21 p.m.

1 stop4h 51m

Chicago O'Hare Intl

Thu 5/11

7:25 a.m.-1:46 p.m.

1 stop5h 21m

C$ 402

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 7/8

10:35 a.m.-2:35 p.m.

1 stop5h 00m

Chicago Midway

Mon 10/8

3:15 p.m.-10:10 p.m.

1 stop5h 55m

C$ 404

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sun 23/8

9:10 a.m.-1:22 p.m.

1 stop5h 12m

Chicago O'Hare Intl

Wed 26/8

7:25 a.m.-1:47 p.m.

1 stop5h 22m

C$ 404

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sun 23/8

9:10 a.m.-1:22 p.m.

1 stop5h 12m

Chicago O'Hare Intl

Sun 30/8

7:25 a.m.-1:47 p.m.

1 stop5h 22m

C$ 405

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 23/9

12:31 p.m.-12:27 a.m.

1 stop12h 56m

Lambert-St Louis

Sat 26/9

7:27 a.m.-4:53 p.m.

1 stop8h 26m

C$ 650

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Wed 12/8

12:30 p.m.-12:14 a.m.

1 stop12h 44m

Lambert-St Louis

Tue 25/8

6:00 a.m.-4:50 p.m.

1 stop9h 50m

C$ 654

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Sat 5/9

6:10 a.m.-12:03 p.m.

1 stop6h 53m

Lambert-St Louis

Fri 11/9

8:00 a.m.-7:45 p.m.

2 stops10h 45m

C$ 699

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?

In general, October is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 85. If you don’t want to visit Illinois in October, then you should wait until May to fly from Montreal Pierre Elliott Trudeau Intl Airport, when ticket prices are also cheap, with an average price of C$ 92.

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

According to our data, Thursday is the cheapest day to fly to Illinois from Montreal Pierre Elliott Trudeau Intl Airport. The lowest ticket price found for a Thursday departure recently was C$ 730. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Illinois is Sunday, with ticket prices averaging around C$ 1,086.

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 C$ 759. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,205 on average. Flights to Illinois from Montreal Pierre Elliott Trudeau Intl Airport at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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 C$ 509 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 C$ 326 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 7% 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

C$ 408

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 C$ 408. The best round-trip flight deal from Montreal Pierre Elliott Trudeau Intl Airport to Illinois found on momondo in the last 72 hours is C$ 587.
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 travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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
American AirlinesPriceFrom C$ 183Free CancellationRating
7.1
11,766 reviews
Search American Airlines flights
Porter AirlinesPriceFrom C$ 208Free CancellationRating
8.0
441 reviews
Search Porter Airlines flights
United AirlinesPriceFrom C$ 265Free CancellationRating
7.4
9,909 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 268Free CancellationRating
7.1
11,283 reviews
Search Air Canada flights

Why use momondo?

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

It is quick and easy to find Montreal to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

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

Flights from Montreal to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Montreal to Illinois?

Once you have performed a search for Montreal to Illinois flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Montreal to Illinois right now. Can momondo alert me if prices change?

Price alerts on flights to Illinois from Montreal are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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