Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from C$ 231

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 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — ORD
1 Sep — 8 Sep1
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 2 August 2026.

Sat 22/86:30 p.m.
YUL
-
ORD
Nonstop2h 35m
Air Canada
Sun 23/88:40 a.m.
ORD
-
YUL
Nonstop2h 19m
Air Canada
Deal found 30/7C$ 371
Wed 2/96:30 a.m.
YUL
-
MDW
1 stop5h 30m
Porter Airlines
Tue 8/911:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Deal found 29/7C$ 371
Sun 6/910:35 a.m.
YUL
-
MDW
1 stop5h 00m
Porter Airlines
Sat 12/911:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Deal found 31/7C$ 373
Wed 9/99:00 a.m.
YUL
-
MDW
1 stop6h 35m
Porter Airlines
Thu 10/93:20 p.m.
MDW
-
YUL
1 stop4h 52m
Porter Airlines
Deal found 30/7C$ 374
Wed 14/106:30 a.m.
YUL
-
MDW
1 stop5h 30m
Porter Airlines
Wed 21/1011:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Deal found 1/8C$ 375
Wed 9/99:00 a.m.
YUL
-
MDW
1 stop6h 35m
Porter Airlines
Wed 16/911:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Deal found 30/7C$ 377
Wed 23/96:30 a.m.
YUL
-
MDW
1 stop5h 30m
Porter Airlines
Wed 30/911:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Deal found 29/7C$ 378
Fri 4/96:30 p.m.
YUL
-
ORD
Nonstop2h 35m
Air Canada
Mon 7/911:05 a.m.
ORD
-
YUL
Nonstop2h 19m
Air Canada
Deal found 1/8C$ 380
Sat 12/96:30 a.m.
YUL
-
MDW
1 stop5h 30m
Porter Airlines
Sat 19/911:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Deal found 29/7C$ 380
Sun 30/810:35 a.m.
YUL
-
MDW
1 stop5h 00m
Porter Airlines
Wed 2/911:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Deal found 1/8C$ 381
Sat 22/86:30 p.m.
YUL
-
ORD
Nonstop2h 35m
Air Canada
Wed 26/811:05 a.m.
ORD
-
YUL
Nonstop2h 18m
Air Canada
Deal found 2/8C$ 382
Fri 21/86:30 a.m.
YUL
-
MDW
1 stop4h 15m
Porter Airlines
Mon 24/83:15 p.m.
MDW
-
YUL
1 stop5h 55m
Porter Airlines
Deal found 30/7C$ 382

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 2 August 2026.

Round-trip from

C$ 371

One-way from

C$ 231

Popular in

July

Cheapest in

April

Average price

C$ 506

Good round-trip deal

C$ 547 or less

Good one-way deal

C$ 363 or less
Air Canada
  • Air Canada
  • 22/8-23/8
  • Nonstop
  • 4h 54m total
  • Montreal to Illinois
Search Deals
Air Canada
  • Air Canada
  • 16/9
  • 1 total stop
  • 6h 51m total
  • Montreal to Illinois
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 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 2 August 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 18/8

6:00 a.m.-1:08 p.m.

1 stop8h 08m

Chicago O'Hare Intl

Wed 19/8

1:50 p.m.-11:52 p.m.

1 stop9h 02m

C$ 392
Quickest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 20/10

9:45 a.m.-11:21 a.m.

Nonstop2h 36m

Chicago O'Hare Intl

Sun 25/10

7:05 a.m.-10:17 a.m.

Nonstop2h 12m

C$ 416

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Tue 15/9

6:30 a.m.-11:00 a.m.

1 stop5h 30m

Chicago Midway

Sat 19/9

11:45 a.m.-6:12 p.m.

1 stop5h 27m

C$ 418

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

6:00 a.m.-10:42 a.m.

1 stop5h 42m

Chicago O'Hare Intl

Sun 23/8

5:20 p.m.-11:30 p.m.

1 stop5h 10m

C$ 425

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 27/8

7:00 a.m.-11:51 a.m.

1 stop5h 51m

Chicago Midway

Sat 29/8

1:25 p.m.-11:30 p.m.

1 stop9h 05m

C$ 425

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Wed 11/11

6:00 a.m.-9:42 a.m.

1 stop4h 42m

Chicago Midway

Wed 18/11

1:00 p.m.-11:58 p.m.

1 stop9h 58m

C$ 425

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Sat 22/8

6:00 a.m.-12:39 p.m.

1 stop7h 39m

Chicago Midway

Sun 23/8

1:25 p.m.-11:30 p.m.

1 stop9h 05m

C$ 425

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Tue 10/11

7:00 a.m.-12:05 p.m.

1 stop6h 05m

Chicago Midway

Thu 12/11

12:30 p.m.-11:30 p.m.

1 stop10h 00m

C$ 425

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Sat 29/8

6:00 a.m.-12:39 p.m.

1 stop7h 39m

Chicago Midway

Sat 5/9

5:45 p.m.-11:30 p.m.

1 stop4h 45m

C$ 425

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Fri 30/10

7:00 a.m.-4:19 p.m.

1 stop10h 19m

Chicago Midway

Wed 4/11

1:27 p.m.-11:25 p.m.

1 stop8h 58m

C$ 425

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/7

Showing 1-10 of 59 resultsSorted by cheapest first
1
2
3
...
6

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, April is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois (average of C$ 385). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in October is currently the most expensive (average of C$ 538). 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 2 August 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 64% on your trip compared to booking a flight at noon.

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 2 August 2026.

The most flights from YUL to USIL are scheduled on a Friday (33 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (21 on average).

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

Airfare is below average for this route at the moment.
Montreal Pierre Elliott Trudeau Intl Airport to Illinois flights typically cost between C$ 391 and C$ 680 in August.
The cheapest round-trip price found within the last 5 days was C$ 371 on Air Canada (22 Aug-23 Aug).

How far ahead should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

The price you pay for your flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 64 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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 2 August 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
8.0
Very good
449 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.5

Comfort

8.0

Crew

8.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Porter Airlines
8.0
Very good
449 reviews
Porter Airlines
8.0
Very good
449 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.5

Comfort

8.0

Crew

8.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
United Airlines
7.4
Good
10,062 reviews
Porter Airlines
8.0
Very good
449 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.5

Comfort

8.0

Crew

8.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
American Airlines
7.1
Good
11,845 reviews
Porter Airlines
8.0
Very good
449 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.5

Comfort

8.0

Crew

8.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats
Air Canada
7.1
Good
11,419 reviews
Porter Airlines
8.0
Very good
449 reviews
Check prices

Boarding

8.2

Overall

8.0

Food

7.5

Comfort

8.0

Crew

8.6

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Shannon,Jul 2026

YQT - YOW

Seats need to be a bit bigger & I'm not impressed that you have to pay to change seats

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 46m. Delta provides one of the quickest options available for as low as C$ 710. The distance between Montreal Pierre Elliott Trudeau Intl Airport and Illinois is about 1556 km. Both multi-stop and direct flights can be found to your destination and back.

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

    The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as C$ 183. However, be on the lookout for offers from Porter Airlines and American Airlines, as they are both options that can get you from Montreal Pierre Elliott Trudeau Intl Airport to Illinois for a low price.

  • 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 Qatar Airways (90%), ANA (89%) or Qantas Airways (86%) 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$ 260. While the most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl) can be booked for C$ 394 on average, our data indicates C$ 2,031 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, April is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois (average of C$ 385). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in October is currently the most expensive (average of C$ 538). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Pierre Elliott Trudeau Intl to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
Pierre Elliott Trudeau Intl to Newark flights
Pierre Elliott Trudeau Intl to Fort Lauderdale flights
Pierre Elliott Trudeau Intl to LaGuardia flights
Pierre Elliott Trudeau Intl to Miami flights
Pierre Elliott Trudeau Intl to John F Kennedy Intl flights
Pierre Elliott Trudeau Intl to Orlando flights
Pierre Elliott Trudeau Intl to Los Angeles flights
Pierre Elliott Trudeau Intl to O'Hare Intl flights
Pierre Elliott Trudeau Intl to Las Vegas flights
Pierre Elliott Trudeau Intl to San Francisco flights
Pierre Elliott Trudeau Intl to Dallas/Fort Worth flights
Pierre Elliott Trudeau Intl to Boston flights
Pierre Elliott Trudeau Intl to Nashville flights
Pierre Elliott Trudeau Intl to Hobby flights
Pierre Elliott Trudeau Intl to Tampa flights
Pierre Elliott Trudeau Intl to Midway flights
Pierre Elliott Trudeau Intl to Reagan-National flights
Pierre Elliott Trudeau Intl to George Bush Intcntl flights
Pierre Elliott Trudeau Intl to Dulles Intl flights
Pierre Elliott Trudeau Intl to Honolulu flights
Pierre Elliott Trudeau Intl to Atlanta flights
Pierre Elliott Trudeau Intl to Minneapolis flights
Pierre Elliott Trudeau Intl to Seattle flights
Pierre Elliott Trudeau Intl to Philadelphia flights
Pierre Elliott Trudeau Intl to Detroit flights
Pierre Elliott Trudeau Intl to Ontario flights
Pierre Elliott Trudeau Intl to San Diego flights
Pierre Elliott Trudeau Intl to Denver flights
Pierre Elliott Trudeau Intl to Salt Lake City flights
Pierre Elliott Trudeau Intl to Sky Harbor Intl flights
Pierre Elliott Trudeau Intl to Baltimore flights
Pierre Elliott Trudeau Intl to Fort Myers flights
Pierre Elliott Trudeau Intl to Santa Ana flights
Pierre Elliott Trudeau Intl to Charlotte flights
Pierre Elliott Trudeau Intl to Cincinnati flights
Pierre Elliott Trudeau Intl to Columbus flights
Pierre Elliott Trudeau Intl to New Orleans flights
Pierre Elliott Trudeau Intl to Love Field flights
Pierre Elliott Trudeau Intl to Portland flights
Pierre Elliott Trudeau Intl to Austin flights
Pierre Elliott Trudeau Intl to Sarasota flights
Pierre Elliott Trudeau Intl to Raleigh flights
Pierre Elliott Trudeau Intl to Jacksonville flights
Pierre Elliott Trudeau Intl to Orlando Sanford Intl flights
Pierre Elliott Trudeau Intl to Myrtle Beach flights
Pierre Elliott Trudeau Intl to Lexington flights
Pierre Elliott Trudeau Intl to Pittsburgh flights
Pierre Elliott Trudeau Intl to Cleveland flights
Pierre Elliott Trudeau Intl to San Jose flights

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 2 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 245AverageC$ 442FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
American AirlinesCheapestC$ 249AverageC$ 442FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 262AverageC$ 504FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 288AverageC$ 560FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.