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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from C$ 138

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — ORD
28 Feb — 7 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Pierre Elliott Trudeau Intl to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Pierre Elliott Trudeau Intl to Illinois
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 January 2026.

Thu 26/39:25 a.m.
YUL
-
ORD
Nonstop2h 53m
Air Canada
Mon 30/312:50 p.m.
ORD
-
YUL
Nonstop2h 15m
Air Canada
Deal found 27/1C$ 247
Fri 1/56:30 a.m.
YUL
-
MDW
1 stop4h 10m
Porter Airlines
Mon 4/510:25 a.m.
MDW
-
YUL
1 stop5h 50m
Porter Airlines
Deal found 27/1C$ 248
Thu 19/26:25 p.m.
YUL
-
ORD
Nonstop2h 45m
Air Canada
Sat 21/27:15 a.m.
ORD
-
YUL
Nonstop2h 05m
Air Canada
Deal found 28/1C$ 250
Thu 19/24:45 p.m.
YUL
-
ORD
Nonstop3h 00m
United Airlines
Sat 21/28:50 a.m.
ORD
-
YUL
1 stop5h 26m
United Airlines
Deal found 27/1C$ 251
Thu 4/66:30 a.m.
YUL
-
MDW
1 stop4h 10m
Porter Airlines
Sun 7/610:25 a.m.
MDW
-
YUL
1 stop5h 50m
Porter Airlines
Deal found 27/1C$ 253
Thu 11/68:15 a.m.
YUL
-
ORD
Nonstop2h 38m
Air Canada
Sun 14/68:45 a.m.
ORD
-
YUL
Nonstop2h 15m
Air Canada
Deal found 27/1C$ 258
Thu 12/36:50 a.m.
YUL
-
MDW
1 stop4h 15m
Porter Airlines
Mon 16/311:00 a.m.
MDW
-
YUL
1 stop5h 45m
Porter Airlines
Deal found 28/1C$ 263
Sun 3/510:35 a.m.
YUL
-
MDW
1 stop7h 15m
Porter Airlines
Thu 7/510:25 a.m.
MDW
-
YUL
1 stop5h 50m
Porter Airlines
Deal found 28/1C$ 265
Fri 24/410:15 a.m.
YUL
-
MDW
1 stop6h 05m
Porter Airlines
Mon 27/411:00 a.m.
MDW
-
YUL
1 stop5h 45m
Porter Airlines
Deal found 27/1C$ 266
Fri 24/411:25 a.m.
YUL
-
MDW
1 stop4h 55m
Porter Airlines
Sun 3/510:25 a.m.
MDW
-
YUL
1 stop5h 50m
Porter Airlines
Deal found 27/1C$ 269
Fri 20/21:10 p.m.
YUL
-
ORD
Nonstop2h 45m
Air Canada
Fri 27/27:15 a.m.
ORD
-
YUL
Nonstop2h 05m
Air Canada
Deal found 28/1C$ 272
Thu 19/24:45 p.m.
YUL
-
ORD
Nonstop3h 00m
United Airlines
Mon 23/21:02 p.m.
ORD
-
YUL
1 stop5h 46m
United Airlines
Deal found 27/1C$ 280

Find flight deals from Pierre Elliott Trudeau Intl to Illinois

Keep the following information in mind while searching for Pierre Elliott Trudeau Intl to Illinois flight deals. Data was last updated 29 January 2026.

Round-trip from

C$ 247

One-way from

C$ 138

Popular in

January

Cheapest in

September

Average price

C$ 585

Good round-trip deal

C$ 527 or less

Good one-way deal

C$ 303 or less
Air Canada
  • Air Canada
  • 26/3-30/3
  • Nonstop
  • 5h 08m total
  • Montreal to Illinois
Search Deals
Porter Airlines
  • Porter Airlines
  • 12/3
  • 1 total stop
  • 4h 15m total
  • Montreal to Illinois
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (C$ 62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 19 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to Illinois.
Search Deals
Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl 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, Cheapflights users made 629,999 searches. Data last updated 29 January 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

Pierre Elliott Trudeau Intl

Fly to

Illinois

Route

Depart

Return

Price

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 18/4

9:15 a.m.-10:53 a.m.

Nonstop2h 38m

Chicago O'Hare Intl

Mon 20/4

12:50 p.m.-4:05 p.m.

Nonstop2h 15m

C$ 250

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 4/6

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

1 stop4h 10m

Chicago Midway

Sun 7/6

10:25 a.m.-5:15 p.m.

1 stop5h 50m

C$ 253

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 12/3

6:50 a.m.-10:05 a.m.

1 stop4h 15m

Chicago Midway

Mon 16/3

11:00 a.m.-5:45 p.m.

1 stop5h 45m

C$ 263

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 19/2

7:00 a.m.-11:38 a.m.

1 stop5h 38m

Chicago O'Hare Intl

Sat 21/2

1:02 p.m.-7:48 p.m.

1 stop5h 46m

C$ 273

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 21/2

2:13 p.m.-11:43 p.m.

1 stop10h 30m

Chicago O'Hare Intl

Sun 22/2

10:35 a.m.-2:00 p.m.

Nonstop2h 25m

C$ 280

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 19/2

9:15 a.m.-2:20 p.m.

1 stop6h 05m

Chicago O'Hare Intl

Sun 22/2

8:50 a.m.-3:16 p.m.

1 stop5h 26m

C$ 288

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 25/2

7:00 a.m.-4:51 p.m.

1 stop10h 51m

Chicago O'Hare Intl

Wed 11/3

7:10 a.m.-5:31 p.m.

1 stop9h 21m

C$ 292

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 20/2

6:00 a.m.-12:46 p.m.

1 stop7h 46m

Chicago Midway

Sat 21/2

1:28 p.m.-11:10 p.m.

1 stop8h 42m

C$ 292

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 10/4

6:45 a.m.-10:05 a.m.

1 stop4h 20m

Chicago Midway

Mon 13/4

11:00 a.m.-4:30 p.m.

1 stop4h 30m

C$ 295

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 13/3

4:45 p.m.-8:17 p.m.

1 stop4h 32m

Chicago O'Hare Intl

Tue 17/3

9:35 a.m.-6:35 p.m.

1 stop8h 00m

C$ 299

Flights are sorted by cheapest round-trip flights first.

Deals found on 27/1

Showing 1-10 of 59 results
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Best time to book a flight from Pierre Elliott Trudeau Intl to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Pierre Elliott Trudeau Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

What is the cheapest month to book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

Currently, September is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois (average of C$ 178). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in March is currently the most expensive (average of C$ 337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YUL to IL?

Find hourly flight availability from Pierre Elliott Trudeau Intl to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 January 2026.

A simple way to save on the total cost of your ticket is to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in the evening. If you’re flexible enough to do this you can expect to save up to 66% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Pierre Elliott Trudeau Intl to Illinois. Price data was last updated on 24 January 2026.

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight should consider departing on Saturday evenings when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Explore weekly flight availability from Pierre Elliott Trudeau Intl to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 29 January 2026.

The most flights from YUL to USIL are scheduled on a Wednesday (20 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (17 on average).

How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 29 January 2026.
Check out reviews from past customers who have flown with Porter Airlines,United Airlines, andAmerican Airlines from Montreal Pierre Elliott Trudeau Intl Airport to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Crew

8.6

Comfort

7.9

Overall

7.9

Boarding

8.2

Food

7.5

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
7.9
Good
412 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Crew

8.6

Comfort

7.9

Overall

7.9

Boarding

8.2

Food

7.5

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
United Airlines
7.4
Good
9,215 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Crew

8.6

Comfort

7.9

Overall

7.9

Boarding

8.2

Food

7.5

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
American Airlines
7.2
Good
11,206 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Crew

8.6

Comfort

7.9

Overall

7.9

Boarding

8.2

Food

7.5

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
WestJet
7.2
Good
3,253 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Crew

8.6

Comfort

7.9

Overall

7.9

Boarding

8.2

Food

7.5

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,667 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Entertainment

6.9

Crew

8.6

Comfort

7.9

Overall

7.9

Boarding

8.2

Food

7.5

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

    A quick flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois can take about 2h 38m. Air Canada provides one of the quickest options available for as low as C$ 250. The distance between Montreal Pierre Elliott Trudeau Intl Airport and Illinois is about 1199 km. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most popular routes from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

    The most popular route from Montreal Pierre Elliott Trudeau Intl Airport to Illinois is Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl. You may also consider Montreal Pierre Elliott Trudeau Intl - Chicago Midway or Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis.

  • What are the most reliable airlines from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

    Consider ANA (80%), Avianca (79%) or Copa Airlines (77%) when booking your flight. These represent the most reliable airlines when flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

  • What are the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

    Looking at all options, your cheapest flight can be booked for C$ 241. While the most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl) can be booked for C$ 265 on average, our data indicates C$ 1,668 when flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

  • Can I find deals for flights from Pierre Elliott Trudeau Intl to Illinois that include hotel bookings?

    Yes. In addition to deals on Pierre Elliott Trudeau Intl to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pierre Elliott Trudeau Intl to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pierre Elliott Trudeau Intl to Illinois.

  • Can I find deals for business class flights from Pierre Elliott Trudeau Intl to Illinois?

    Yes. Cheapflights offers flight deals from Pierre Elliott Trudeau Intl to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

    Currently, September is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois (average of C$ 178). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in March is currently the most expensive (average of C$ 337). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Pierre Elliott Trudeau Intl to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Pierre Elliott Trudeau Intl to Illinois

Discover the top 4 airlines that operate flights from Pierre Elliott Trudeau Intl to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 29 January 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 174AverageC$ 358FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Porter AirlinesCheapestC$ 186AverageC$ 438FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 250AverageC$ 483FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 260AverageC$ 496FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Pierre Elliott Trudeau Intl to Illinois?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Illinois from Pierre Elliott Trudeau Intl today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Pierre Elliott Trudeau Intl to Illinois?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Illinois from Pierre Elliott Trudeau Intl.

Can Cheapflights find flights from Pierre Elliott Trudeau Intl to Illinois with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Pierre Elliott Trudeau Intl to Illinois, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Pierre Elliott Trudeau Intl to Illinois become cheaper?

Not ready to book yet? You can track prices for flights from Pierre Elliott Trudeau Intl to Illinois on Cheapflights with our Price Alert feature and get notified when better prices are available.

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