In terms of precipitation, rainfall in Illinois ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Illinois when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 Emirates (100%), Japan Airlines (95%) or ANA (88%) when booking your flight. These represent the most reliable airlines when flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

What are the most popular airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

Air Canada, Porter Airlines and United Airlines are the most popular airlines when flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

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.

C$ 194+ Cheap Flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois

Q: 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$ 586 and C$ 379 in June. The cheapest round-trip price found within the last 3 days was C$ 374 on Air Canada (16 Jun-23 Jun).

Cheap flight deals from Pierre Elliott Trudeau Intl to Illinois

Enter your travel dates to find the best prices.

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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 3 May 2026.

Thu 4/66:30 a.m.

YUL

MDW

1 stop4h 05m

Porter Airlines

Sun 7/610:15 a.m.

MDW

YUL

1 stop6h 00m

Porter Airlines

Deal found 29/4C$ 281

Thu 28/56:30 a.m.

YUL

MDW

1 stop9h 05m

Porter Airlines

Sun 31/510:30 a.m.

MDW

YUL

1 stop8h 40m

Porter Airlines

Deal found 29/4C$ 311

Fri 12/66:30 a.m.

YUL

MDW

1 stop9h 05m

Porter Airlines

Sun 14/610:15 a.m.

MDW

YUL

1 stop7h 00m

Porter Airlines

Deal found 30/4C$ 315

Thu 21/56:30 a.m.

YUL

MDW

1 stop9h 05m

Porter Airlines

Sun 24/510:30 a.m.

MDW

YUL

1 stop8h 40m

Porter Airlines

Deal found 30/4C$ 318

Fri 22/56:30 a.m.

YUL

MDW

1 stop9h 05m

Porter Airlines

Sun 24/510:30 a.m.

MDW

YUL

1 stop8h 40m

Porter Airlines

Deal found 29/4C$ 321

Thu 4/66:30 a.m.

YUL

MDW

1 stop9h 05m

Porter Airlines

Tue 9/610:15 a.m.

MDW

YUL

1 stop8h 55m

Porter Airlines

Deal found 2/5C$ 322

Thu 4/610:35 a.m.

YUL

MDW

1 stop5h 00m

Porter Airlines

Mon 8/610:15 a.m.

MDW

YUL

1 stop6h 00m

Porter Airlines

Deal found 2/5C$ 328

Fri 29/56:30 a.m.

YUL

MDW

1 stop9h 05m

Porter Airlines

Mon 1/63:20 p.m.

MDW

YUL

1 stop5h 50m

Porter Airlines

Deal found 28/4C$ 342

Tue 14/710:35 a.m.

YUL

MDW

1 stop5h 00m

Porter Airlines

Thu 23/710:25 a.m.

MDW

YUL

1 stop6h 45m

Porter Airlines

Deal found 28/4C$ 347

Tue 16/64:30 p.m.

YUL

ORD

1 stop4h 46m

Air Canada

Tue 23/67:25 a.m.

ORD

YUL

1 stop5h 22m

Air Canada

Deal found 2/5C$ 374

Fri 29/56:30 p.m.

YUL

ORD

Nonstop2h 38m

Air Canada

Sun 31/58:45 a.m.

ORD

YUL

Nonstop2h 15m

Air Canada

Deal found 29/4C$ 376

Thu 4/62:30 p.m.

YUL

ORD

1 stop6h 46m

Air Canada

Sun 7/67:25 a.m.

ORD

YUL

1 stop5h 20m

Air Canada

Deal found 29/4C$ 378

Best flights from Pierre Elliott Trudeau Intl to Illinois
Discover carefully curated flight deals from Pierre Elliott Trudeau Intl to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 3 May 2026.

Thu 28/512:49 p.m.

YUL

ORD

1 stop8h 25m

Delta

Sat 30/51:44 p.m.

ORD

YUL

1 stop8h 29m

Delta

Deal found 29/4C$ 413

Tue 21/710:35 a.m.

YUL

MDW

1 stop5h 00m

Porter Airlines

Sat 25/710:25 a.m.

MDW

YUL

1 stop6h 45m

Porter Airlines

Deal found 30/4C$ 416

Wed 3/69:45 a.m.

YUL

STL

1 stop5h 38m

United Airlines

Wed 10/66:00 a.m.

STL

YUL

2 stops7h 40m

United Airlines

Deal found 29/4C$ 591

Fri 29/56:30 p.m.

YUL

STL

Nonstop2h 55m

Air Canada

Mon 1/62:15 p.m.

STL

YUL

1 stop5h 36m

Air Canada

Deal found 28/4C$ 595

Wed 27/57:00 a.m.

YUL

ORD

1 stop7h 47m

Delta

Thu 28/52:59 p.m.

ORD

YUL

1 stop7h 58m

Delta

Deal found 29/4C$ 416

Thu 18/66:00 a.m.

YUL

MDW

1 stop4h 14m

Delta

Sat 20/69:17 a.m.

MDW

YUL

1 stop6h 03m

Delta

Deal found 30/4C$ 417

Tue 1/910:35 a.m.

YUL

ORD

1 stop5h 00m

Porter Airlines

Wed 2/93:20 p.m.

ORD

YUL

1 stop3h 50m

Porter Airlines

Deal found 2/5C$ 470

Mon 1/67:10 a.m.

YUL

ORD

1 stop5h 37m

Delta

Fri 5/62:59 p.m.

ORD

YUL

1 stop7h 58m

Delta

Deal found 28/4C$ 419

Wed 27/59:30 a.m.

YUL

ORD

1 stop8h 04m

Delta

Sat 30/51:44 p.m.

ORD

YUL

1 stop8h 29m

Delta

Deal found 1/5C$ 423

Fri 29/56:10 a.m.

YUL

STL

1 stop7h 01m

United Airlines

Fri 5/67:05 p.m.

STL

YUL

1 stop14h 35m

United Airlines

Deal found 30/4C$ 591

Wed 27/512:40 p.m.

YUL

ORD

1 stop10h 13m

Delta

Fri 29/512:30 p.m.

ORD

YUL

1 stop10h 11m

Delta

Deal found 1/5C$ 423

Sat 13/66:10 a.m.

YUL

STL

1 stop5h 24m

United Airlines

Sat 20/61:13 p.m.

STL

YUL

2 stops10h 00m

United Airlines

Deal found 29/4C$ 591

Sat 16/57:00 a.m.

YUL

ORD

1 stop7h 01m

Delta

Thu 28/52:59 p.m.

ORD

YUL

1 stop7h 58m

Delta

Deal found 29/4C$ 428

Fri 29/512:40 p.m.

YUL

ORD

1 stop10h 13m

Delta

Sun 31/53:47 p.m.

ORD

YUL

1 stop6h 54m

Delta

Deal found 29/4C$ 428

Sat 13/612:53 p.m.

YUL

MDW

1 stop10h 24m

Delta

Sat 20/69:17 a.m.

MDW

YUL

1 stop6h 03m

Delta

Deal found 29/4C$ 428

Mon 18/56:00 a.m.

YUL

MDW

1 stop3h 43m

Delta

Fri 29/55:08 p.m.

MDW

YUL

1 stop5h 49m

Delta

Deal found 29/4C$ 428

Tue 9/66:00 a.m.

YUL

MDW

1 stop4h 14m

Delta

Wed 17/61:21 p.m.

MDW

YUL

1 stop9h 07m

Delta

Deal found 29/4C$ 428

Sat 30/57:00 a.m.

YUL

ORD

1 stop7h 01m

Delta

Sun 31/53:47 p.m.

ORD

YUL

1 stop6h 54m

Delta

Deal found 28/4C$ 429

Sat 30/56:00 a.m.

YUL

MDW

1 stop3h 43m

Delta

Mon 1/66:23 a.m.

MDW

YUL

1 stop10h 20m

Delta

Deal found 28/4C$ 429

Sat 11/77:00 a.m.

YUL

MDW

1 stop9h 37m

Delta

Mon 20/71:18 p.m.

MDW

YUL

1 stop9h 07m

Delta

Deal found 30/4C$ 444

Wed 24/612:48 p.m.

YUL

MDW

1 stop10h 29m

Delta

Sat 4/71:21 p.m.

MDW

YUL

1 stop9h 07m

Delta

Deal found 30/4C$ 444

Thu 4/66:51 p.m.

YUL

ORD

1 stop6h 08m

Delta

Tue 9/68:08 a.m.

ORD

YUL

1 stop8h 37m

Delta

Deal found 2/5C$ 461

Fri 22/56:00 a.m.

YUL

MDW

1 stop7h 42m

Delta

Sun 24/51:59 p.m.

MDW

YUL

1 stop8h 42m

Delta

Deal found 3/5C$ 461

Sun 24/59:30 a.m.

YUL

ORD

1 stop8h 04m

Delta

Tue 26/55:19 p.m.

ORD

YUL

1 stop4h 54m

Delta

Deal found 2/5C$ 462

Fri 15/56:51 p.m.

YUL

ORD

1 stop6h 08m

Delta

Tue 19/55:41 p.m.

ORD

YUL

1 stop5h 00m

Delta

Deal found 1/5C$ 463

Fri 29/57:00 a.m.

YUL

STL

1 stop6h 20m

Delta

Mon 1/65:20 p.m.

STL

YUL

1 stop5h 37m

Delta

Deal found 28/4C$ 582

Tue 2/66:00 a.m.

YUL

STL

1 stop4h 29m

Delta

Wed 3/61:27 p.m.

STL

YUL

1 stop9h 30m

Delta

Deal found 29/4C$ 590

Wed 3/66:00 a.m.

YUL

STL

1 stop8h 10m

Delta

Wed 10/612:35 p.m.

STL

YUL

1 stop5h 19m

Delta

Deal found 29/4C$ 590

Thu 15/107:00 a.m.

YUL

STL

1 stop8h 40m

Delta

Mon 19/103:42 p.m.

STL

YUL

1 stop7h 09m

Delta

Deal found 30/4C$ 610

Find flight deals from Pierre Elliott Trudeau Intl to Illinois

Round-trip from	C$ 281
One-way from	C$ 194
Popular in	December
Cheapest in	March
Average price	C$ 453
Good round-trip deal	C$ 570 or less
Good one-way deal	C$ 367 or less

Porter Airlines
4/6-7/6
2 total stops
10h 05m total
Montreal to Illinois

Search Deals

Porter Airlines
29/5
1 total stop
9h 05m total
Montreal to Illinois

Search Deals

Highest demand for flights based on searches. 4% potential increase in price (C$ 24 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in May 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

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

Thu 28/5

12:49 p.m.-8:14 p.m.

1 stop8h 25m

Chicago O'Hare Intl

Sat 30/5

1:44 p.m.-11:13 p.m.

1 stop8h 29m

C$ 413

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Tue 21/7

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

1 stop5h 00m

Chicago Midway

Sat 25/7

10:25 a.m.-6:10 p.m.

1 stop6h 45m

C$ 416

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

7:00 a.m.-1:47 p.m.

1 stop7h 47m

Chicago O'Hare Intl

Thu 28/5

2:59 p.m.-11:57 p.m.

1 stop7h 58m

C$ 416

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 18/6

6:00 a.m.-9:14 a.m.

1 stop4h 14m

Chicago Midway

Sat 20/6

9:17 a.m.-4:20 p.m.

1 stop6h 03m

C$ 417

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 1/6

7:10 a.m.-11:47 a.m.

1 stop5h 37m

Chicago O'Hare Intl

Fri 5/6

2:59 p.m.-11:57 p.m.

1 stop7h 58m

C$ 419

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

9:30 a.m.-4:34 p.m.

1 stop8h 04m

Chicago O'Hare Intl

Sat 30/5

1:44 p.m.-11:13 p.m.

1 stop8h 29m

C$ 423

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 27/5

12:40 p.m.-9:53 p.m.

1 stop10h 13m

Chicago O'Hare Intl

Fri 29/5

12:30 p.m.-11:41 p.m.

1 stop10h 11m

C$ 423

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 16/5

7:00 a.m.-1:01 p.m.

1 stop7h 01m

Chicago O'Hare Intl

Thu 28/5

2:59 p.m.-11:57 p.m.

1 stop7h 58m

C$ 428

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 29/5

12:40 p.m.-9:53 p.m.

1 stop10h 13m

Chicago O'Hare Intl

Sun 31/5

3:47 p.m.-11:41 p.m.

1 stop6h 54m

C$ 428

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Sat 13/6

12:53 p.m.-10:17 p.m.

1 stop10h 24m

Chicago Midway

Sat 20/6

9:17 a.m.-4:20 p.m.

1 stop6h 03m

C$ 428

Flights are sorted by cheapest round-trip flights first.

Deals found on 28/4

Showing 1-10 of 59 resultsSorted by cheapest first

...

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.

YUL-MDW

YUL-ORD

YUL-STL

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

YUL-USIL

YUL-MDW

YUL-ORD

YUL-STL

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.

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

Currently, October is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois (average of C$ 82). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in December is currently the most expensive (average of C$ 220). 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?

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.

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

The most flights from YUL to USIL are scheduled on a Friday (28 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (26 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

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

436 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

Porter Airlines

8.0

Very good

436 reviews

Porter Airlines

8.0

Very good

436 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

United Airlines

7.4

Good

9,682 reviews

Porter Airlines

8.0

Very good

436 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

American Airlines

7.1

Good

11,672 reviews

Porter Airlines

8.0

Very good

436 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

Air Canada

7.1

Good

10,993 reviews

Porter Airlines

8.0

Very good

436 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

Related info for your journey

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 5h. Delta provides one of the quickest options available for as low as C$ 416. The distance between Montreal Pierre Elliott Trudeau Intl Airport and Illinois is about 1196 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 Emirates (100%), Japan Airlines (95%) or ANA (88%) 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$ 252. While the most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl) can be booked for C$ 381 on average, our data indicates C$ 789 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, October is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois (average of C$ 82). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in December is currently the most expensive (average of C$ 220). 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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Top 4 airlines flying from Pierre Elliott Trudeau Intl to Illinois

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	CheapestC$ 175	AverageC$ 359	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Porter Airlines	CheapestC$ 178	AverageC$ 437	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
Air Canada	CheapestC$ 246	AverageC$ 509	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 254	AverageC$ 487	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

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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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from C$ 194

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 29/5. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Pierre Elliott Trudeau Intl to Illinois

Cheapest flights from Pierre Elliott Trudeau Intl to IllinoisExplore 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 3 May 2026.

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 3 May 2026.

Best flights from Pierre Elliott Trudeau Intl to IllinoisDiscover carefully curated flight deals from Pierre Elliott Trudeau Intl to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 3 May 2026.

Discover carefully curated flight deals from Pierre Elliott Trudeau Intl to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 3 May 2026.

Direct flights from Pierre Elliott Trudeau Intl to IllinoisExplore direct flight options from Pierre Elliott Trudeau Intl to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 3 May 2026.

Explore direct flight options from Pierre Elliott Trudeau Intl to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 3 May 2026.

Last-minute flights from Pierre Elliott Trudeau Intl to IllinoisDiscover last-minute flight deals from Pierre Elliott Trudeau Intl to Illinois. Data last updated 3 May 2026 and is based on user searches.

Discover last-minute flight deals from Pierre Elliott Trudeau Intl to Illinois. Data last updated 3 May 2026 and is based on user searches.

One-way flights from Pierre Elliott Trudeau Intl to IllinoisSearch for one-way flight options from Pierre Elliott Trudeau Intl to Illinois. Find affordable one-way fares based on user searches. Data last updated 3 May 2026.

Search for one-way flight options from Pierre Elliott Trudeau Intl to Illinois. Find affordable one-way fares based on user searches. Data last updated 3 May 2026.

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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 3 May 2026.

Best flights from Pierre Elliott Trudeau Intl to Illinois
Discover carefully curated flight deals from Pierre Elliott Trudeau Intl to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 3 May 2026.

Direct flights from Pierre Elliott Trudeau Intl to Illinois
Explore direct flight options from Pierre Elliott Trudeau Intl to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 3 May 2026.

Last-minute flights from Pierre Elliott Trudeau Intl to Illinois
Discover last-minute flight deals from Pierre Elliott Trudeau Intl to Illinois. Data last updated 3 May 2026 and is based on user searches.

One-way flights from Pierre Elliott Trudeau Intl to Illinois
Search for one-way flight options from Pierre Elliott Trudeau Intl to Illinois. Find affordable one-way fares based on user searches. Data last updated 3 May 2026.