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$127+ Cheap flights from Pierre Elliott Trudeau Intl (YUL) to Illinois

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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — ORD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap 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 September 11, 2025.

Round-trip from

$209
(Kiwi.com)

One-way from

$127
(SmartFares)

Popular in

November

Cheapest in

March

Average price

$325

Good round-trip deal

$394 or less

Good one-way deal

$261 or less
From Montreal Pierre Elliott Trudeau Intl to Illinois
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One-way flight from Montreal Pierre Elliott Trudeau Intl to Illinois
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Highest demand for flights based on searches. 5% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to Illinois.
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Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to Illinois.
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Find flight deals from Pierre Elliott Trudeau Intl to Illinois

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 September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/96:45 amYUL - MDW
1 stop4h 20mPorter Airlines
Tue 11/1111:00 amMDW - YUL
1 stop4h 30mPorter Airlines
Deal found 9/8$209
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/171:10 pmYUL - MDW
1 stop4h 14mPorter Airlines
Mon 10/205:20 pmMDW - YUL
1 stop3h 55mPorter Airlines
Deal found 9/9$210
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2111:25 amYUL - MDW
1 stop4h 55mPorter Airlines
Fri 11/2811:00 amMDW - YUL
1 stop5h 45mPorter Airlines
Deal found 9/10$211
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/71:10 pmYUL - MDW
1 stop4h 14mPorter Airlines
Wed 10/159:35 amMDW - YUL
1 stop5h 25mPorter Airlines
Deal found 9/9$214
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/710:45 amYUL - MDW
1 stop6h 39mPorter Airlines
Fri 10/245:20 pmMDW - YUL
1 stop3h 55mPorter Airlines
Deal found 9/9$215
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2011:25 amYUL - MDW
1 stop4h 55mPorter Airlines
Thu 11/274:15 pmMDW - YUL
1 stop5h 30mPorter Airlines
Deal found 9/10$216
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/810:45 amYUL - MDW
1 stop6h 39mPorter Airlines
Sun 10/125:20 pmMDW - YUL
1 stop3h 55mPorter Airlines
Deal found 9/10$218
This SmartFares deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1611:25 amYUL - MDW
1 stop4h 55mPorter Airlines
Tue 11/1811:00 amMDW - YUL
1 stop4h 30mPorter Airlines
Deal found 9/8$221
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/196:45 amYUL - MDW
1 stop4h 20mPorter Airlines
Tue 12/911:00 amMDW - YUL
1 stop4h 30mPorter Airlines
Deal found 9/9$223
This Trip.com deal was found by Cheapflights users on 9/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/99:25 amYUL - ORD
Nonstop2h 53mAir Canada
Tue 11/1112:50 pmORD - YUL
Nonstop2h 07mAir Canada
Deal found 9/8$229
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/168:20 amYUL - ORD
Nonstop2h 31mAir Canada
Sun 10/198:40 amORD - YUL
Nonstop2h 14mAir Canada
Deal found 9/9$231
This Air Canada deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/78:20 amYUL - ORD
Nonstop2h 31mAir Canada
Sun 10/128:40 amORD - YUL
Nonstop2h 14mAir Canada
Deal found 9/9$234

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 2,558,603 searches. Data last updated September 11, 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

Pierre Elliott Trudeau Intl

Fly to

Illinois

Route

Depart

Return

Price

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 11/20

6:45 am-10:05 am

1 stop4h 20m

Chicago Midway

Sun 11/23

11:00 am-4:30 pm

1 stop4h 30m

$209

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 10/2

10:45 am-4:24 pm

1 stop6h 39m

Chicago Midway

Mon 10/6

5:20 pm-10:15 pm

1 stop3h 55m

$215

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 11/21

11:25 am-3:20 pm

1 stop4h 55m

Chicago Midway

Mon 11/24

11:00 am-4:30 pm

1 stop4h 30m

$227

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 10/17

10:45 am-4:24 pm

1 stop6h 39m

Chicago Midway

Mon 10/20

5:20 pm-10:15 pm

1 stop3h 55m

$237

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Wed 10/8

1:10 pm-4:24 pm

1 stop4h 14m

Chicago Midway

Thu 10/9

9:35 am-4:00 pm

1 stop5h 25m

$238

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 10/17

10:45 am-4:24 pm

1 stop6h 39m

Chicago Midway

Tue 10/21

5:20 pm-10:15 pm

1 stop3h 55m

$239

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 10/17

1:10 pm-4:24 pm

1 stop4h 14m

Chicago Midway

Wed 10/22

5:20 pm-10:15 pm

1 stop3h 55m

$239

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Wed 10/15

1:10 pm-4:24 pm

1 stop4h 14m

Chicago Midway

Sun 10/19

5:20 pm-10:15 pm

1 stop3h 55m

$239

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 10/31

6:45 am-10:05 am

1 stop4h 20m

Chicago Midway

Sun 11/2

11:00 am-6:45 pm

1 stop6h 45m

$240

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 11/20

6:45 am-10:05 am

1 stop4h 20m

Chicago Midway

Thu 11/27

11:00 am-4:30 pm

1 stop4h 30m

$241

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 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, August is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois (average of $245). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in March is currently the most expensive (average of $321). 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 September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois as you normally would.

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 September 11, 2025.

The most flights from YUL to USIL are scheduled on a Wednesday (31 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (28 on average).

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 September 11, 2025.
Read through reviews of airlines operating flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois, such as Porter Airlines, United Airlines, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
363 reviews

Food

7.6

Boarding

8.1

Overall

7.9

Entertainment

7.0

Crew

8.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews

Food

7.6

Boarding

8.1

Overall

7.9

Entertainment

7.0

Crew

8.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,937 reviews
Porter Airlines
7.9
Good
363 reviews

Food

7.6

Boarding

8.1

Overall

7.9

Entertainment

7.0

Crew

8.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews

Food

7.6

Boarding

8.1

Overall

7.9

Entertainment

7.0

Crew

8.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews

Food

7.6

Boarding

8.1

Overall

7.9

Entertainment

7.0

Crew

8.6

Comfort

7.9

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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?

    Porter Airlines, Delta, and United Airlines can get you from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in just under 2h 46m. Your travel time can differ by up to 3h 54m. Montreal Pierre Elliott Trudeau Intl Airport and Illinois are separated by a distance of 745 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois one-way?

    For one-way options, check prices for Porter Airlines. According to our data, you can fly for as low as $131. Users have also found prices from $141 and $209 on Air Canada and American Airlines, respectively.

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

    Most travelers choose Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl, Montreal Pierre Elliott Trudeau Intl - Chicago Midway or Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis when deciding on the best route from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

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

    Before booking your flight to Illinois from Montreal Pierre Elliott Trudeau Intl Airport, check out the most reliable airlines to get you to your destination on time: Qantas Airways (90%), Qatar Airways (90%), Emirates( 90%).

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

    Looking for the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois? While on average our users pay $1,247, our data indicates the cheapest price to be $136. The most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), is priced around $250.

  • 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, August is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois (average of $245). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in March is currently the most expensive (average of $321). 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.

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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 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$112Average$487FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$174Average$442FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$226Average$325FlexibilityNo cancel feeOn-time52%
American AirlinesCheapest$262Average$407FlexibilityNo cancel feeOn-time71%

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