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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from C$ 225

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 11/6. 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

Enter your travel dates to find the best prices.
Air Canada Logo
8:40 a.m. - 10:18 a.m.
YUL
-
ORD
2h 38mdirect
Air Canada Logo
8:45 a.m. - 12:00 p.m.
ORD
-
YUL
2h 15mdirect
C$ 377Air Canada
Thu, 28 May - Sun, 31 May
Porter Airlines Logo
10:35 a.m. - 2:35 p.m.
YUL
-
MDW
5h 00m
1 stop
Porter Airlines Logo
10:15 a.m. - 5:15 p.m.
MDW
-
YUL
6h 00m
1 stop
C$ 377Porter Airlines
Thu, 11 Jun - Sun, 14 Jun
Air Canada Logo
1:15 p.m. - 2:53 p.m.
YUL
-
ORD
2h 38mdirect
Air Canada Logo
8:45 a.m. - 12:00 p.m.
ORD
-
YUL
2h 15mdirect
C$ 378Air Canada
Sat, 23 May - Mon, 25 May
Air Canada Logo
1:15 p.m. - 2:53 p.m.
YUL
-
ORD
2h 38mdirect
Air Canada Logo
8:45 a.m. - 12:00 p.m.
ORD
-
YUL
2h 15mdirect
C$ 382Air Canada
Sat, 23 May - Sun, 24 May
Air Canada Logo
8:40 a.m. - 10:18 a.m.
YUL
-
ORD
2h 38mdirect
Air Canada Logo
8:45 a.m. - 12:00 p.m.
ORD
-
YUL
2h 15mdirect
C$ 384Air Canada
Sat, 23 May - Mon, 25 May
Air Canada Logo
8:40 a.m. - 10:18 a.m.
YUL
-
ORD
2h 38mdirect
Air Canada Logo
8:45 a.m. - 12:00 p.m.
ORD
-
YUL
2h 15mdirect
C$ 385Air Canada
Thu, 28 May - Sun, 31 May
Porter Airlines Logo
10:35 a.m. - 2:35 p.m.
YUL
-
MDW
5h 00m
1 stop
Porter Airlines Logo
3:20 p.m. - 10:10 p.m.
MDW
-
YUL
5h 50m
1 stop
C$ 386Porter Airlines
Thu, 11 Jun - Mon, 15 Jun
Delta Logo
6:51 p.m. - 11:59 p.m.
YUL
-
STL
6h 08m
1 stop
Delta Logo
1:27 p.m. - 11:57 p.m.
STL
-
YUL
9h 30m
1 stop
C$ 626Delta
Fri, 29 May - Mon, 1 Jun
Delta Logo
6:51 p.m. - 11:59 p.m.
YUL
-
STL
6h 08m
1 stop
Delta Logo
5:20 p.m. - 11:57 p.m.
STL
-
YUL
5h 37m
1 stop
C$ 627Delta
Fri, 29 May - Mon, 1 Jun
American Airlines Logo
12:30 p.m. - 4:30 p.m.
YUL
-
STL
5h 00m
1 stop
American Airlines Logo
5:40 p.m. - 12:28 p.m.
STL
-
YUL
17h 48m
1 stop
C$ 638American Airlines
Fri, 29 May - Mon, 1 Jun

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
17 Jun
YUL6:10 a.m.Montreal Pierre Elliott Trudeau Intl
2h 40m
ORD7:50 a.m.Chicago O'Hare Intl
23 Jun
ORD7:10 a.m.Chicago O'Hare Intl
2h 30m
YUL10:40 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 393
United Airlines
28 May
YUL9:45 a.m.Montreal Pierre Elliott Trudeau Intl
2h 35m
ORD11:20 a.m.Chicago O'Hare Intl
31 May
ORD6:30 a.m.Chicago O'Hare Intl
7h 10m
1 stop
YUL2:40 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 407
United Airlines
6 Jun
YUL4:55 p.m.Montreal Pierre Elliott Trudeau Intl
2h 49m
ORD6:44 p.m.Chicago O'Hare Intl
15 Jun
ORD6:04 p.m.Chicago O'Hare Intl
2h 22m
YUL9:26 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 410

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
23 May
YUL5:33 p.m.Montreal Pierre Elliott Trudeau Intl
2h 54m
ORD7:27 p.m.Chicago O'Hare Intl
25 May
ORD6:40 a.m.Chicago O'Hare Intl
4h 43m
1 stop
YUL12:23 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 426
American Airlines
23 May
YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl
2h 46m
ORD2:16 p.m.Chicago O'Hare Intl
24 May
ORD9:33 p.m.Chicago O'Hare Intl
13h 50m
1 stop
YUL12:23 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 429
American Airlines
28 May
YUL12:30 p.m.Montreal Pierre Elliott Trudeau Intl
2h 46m
ORD2:16 p.m.Chicago O'Hare Intl
30 Jun
ORD6:29 a.m.Chicago O'Hare Intl
14h 09m
1 stop
YUL9:38 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 444

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 13 May 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
Quickest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 28/5

8:40 a.m.-10:18 a.m.

Nonstop2h 38m

Chicago O'Hare Intl

Sun 31/5

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

Nonstop2h 15m

C$ 377

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

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

1 stop5h 00m

Chicago Midway

Sun 14/6

10:15 a.m.-5:15 p.m.

1 stop6h 00m

C$ 377

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 23/5

1:15 p.m.-2:53 p.m.

Nonstop2h 38m

Chicago O'Hare Intl

Mon 25/5

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

Nonstop2h 15m

C$ 378

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 23/5

1:15 p.m.-2:53 p.m.

Nonstop2h 38m

Chicago O'Hare Intl

Sun 24/5

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

Nonstop2h 15m

C$ 382

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 23/5

8:40 a.m.-10:18 a.m.

Nonstop2h 38m

Chicago O'Hare Intl

Mon 25/5

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

Nonstop2h 15m

C$ 384

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 28/5

8:40 a.m.-10:18 a.m.

Nonstop2h 38m

Chicago O'Hare Intl

Sun 31/5

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

Nonstop2h 15m

C$ 385

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

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

1 stop5h 00m

Chicago Midway

Mon 15/6

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

1 stop5h 50m

C$ 386

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 29/5

6:51 p.m.-11:59 p.m.

1 stop6h 08m

Lambert-St Louis

Mon 1/6

1:27 p.m.-11:57 p.m.

1 stop9h 30m

C$ 626

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 29/5

6:51 p.m.-11:59 p.m.

1 stop6h 08m

Lambert-St Louis

Mon 1/6

5:20 p.m.-11:57 p.m.

1 stop5h 37m

C$ 627

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Fri 29/5

12:30 p.m.-4:30 p.m.

1 stop5h 00m

Lambert-St Louis

Mon 1/6

5:40 p.m.-12:28 p.m.

1 stop17h 48m

C$ 638

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$ 82. 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$ 89.

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$ 701. 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$ 1,073.

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$ 734. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,166 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$ 475 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$ 289 on momondo.

Can stopping save me money on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flights?

You could potentially save up to 9% 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$ 370

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$ 370. 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$ 586.
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$ 176Free CancellationRating
7.1
11,662 reviews
Search American Airlines flights
Porter AirlinesPriceFrom C$ 179Free CancellationRating
8.0
436 reviews
Search Porter Airlines flights
Air CanadaPriceFrom C$ 248Free CancellationRating
7.1
11,029 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 256Free CancellationRating
7.4
9,711 reviews
Search United Airlines 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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