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

To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at C$ 127. Porter Airlines flights start at C$ 130 while deals on Air Canada start at C$ 142 one-way.

In terms of precipitation, rainfall in Montreal Pierre Elliott Trudeau Intl Airport ranges from 64.0 - 111.0 mm per month. August is typically the wettest month, when rainfall can reach 111.0 mm. February is typically the driest time to visit Montreal Pierre Elliott Trudeau Intl Airport when rainfall is around 64.0 mm.

If weather is an important factor for your trip to Montreal Pierre Elliott Trudeau Intl Airport, 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 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -9.0 C).

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

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

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

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Montreal Pierre Elliott Trudeau Intl Airport on time: Republic Airways (90%), Emirates (87%), Alaska Airlines (87%).

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, September can be a great choice for travel to Montreal Pierre Elliott Trudeau Intl Airport. Flights to Montreal Pierre Elliott Trudeau Intl Airport from Illinois in September are about C$ 513 on average during September, but can be found for as low as C$ 186.

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

Yes. Cheapflights offers flight deals from Illinois to Pierre Elliott Trudeau Intl 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$ 127+ Flights from Illinois to Montreal Pierre Elliott Trudeau Intl Airport

Q: How far in advance should I book a flight from Illinois to Montreal Pierre Elliott Trudeau Intl Airport?

Travellers have found it’s best to book a flight 46 days in advance to save up to 100% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 46 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Illinois to Montreal Pierre Elliott Trudeau Intl Airport 1-2 weeks in advance for as low as C$ 548, or C$ 712 for flights within the next 24 hours.

Cheap flight deals from Illinois to Pierre Elliott Trudeau Intl

Round-trip from	C$ 270
One-way from	C$ 127
Popular in	December
Cheapest in	September
Average price	C$ 555
Good round-trip deal	C$ 115 or less
Good one-way deal	C$ 114 or less

Porter Airlines
23/10-26/10
2 total stops
8h 15m total
Illinois to Montreal

Search Deals

American Airlines
13/9
1 total stop
11h 41m total
Illinois to Montreal

Search Deals

Highest demand for flights based on searches. 5% potential increase in price (C$ 37 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease (C$ 11 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Price to beat on a round-trip flight from Illinois to Montreal Pierre Elliott Trudeau Intl.

Search Deals

Price to beat on a one-way flight from Illinois to Montreal Pierre Elliott Trudeau Intl.

Search Deals

Find flight deals from Illinois to Pierre Elliott Trudeau Intl

Cheapest flights from Illinois to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Illinois to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.

Thu 23/105:20 p.m.MDW - YUL

1 stop3h 55mPorter Airlines

Sun 26/106:45 a.m.YUL - MDW

1 stop4h 20mPorter Airlines

Deal found 28/7C$ 270

Sat 20/912:33 p.m.ORD - YUL

1 stop8h 59mMultiple Airlines

Mon 22/98:20 a.m.YUL - ORD

Nonstop2h 31mMultiple Airlines

Deal found 30/7C$ 274

Sun 14/93:35 p.m.ORD - YUL

Nonstop2h 15mAir Canada

Fri 26/98:20 a.m.YUL - ORD

Nonstop2h 31mAir Canada

Deal found 30/7C$ 280

Wed 29/109:12 p.m.ORD - YUL

1 stop14h 12mAmerican Airlines

Sun 2/113:52 p.m.YUL - ORD

Nonstop3h 00mAmerican Airlines

Deal found 29/7C$ 283

Sat 20/91:43 p.m.MDW - YUL

1 stop8h 35mDelta

Wed 24/96:00 a.m.YUL - MDW

1 stop3h 40mDelta

Deal found 30/7C$ 327

Sat 20/93:45 p.m.ORD - YUL

1 stop7h 11mDelta

Mon 22/96:55 p.m.YUL - ORD

1 stop5h 59mDelta

Deal found 30/7C$ 327

Sat 23/86:00 p.m.ORD - YUL

Nonstop2h 29mUnited Airlines

Mon 25/86:15 a.m.YUL - ORD

Nonstop2h 46mUnited Airlines

Deal found 29/7C$ 410

Tue 7/105:20 p.m.MDW - YUL

1 stop3h 55mMultiple Airlines

Sat 11/102:45 p.m.YUL - MDW

1 stop19h 55mMultiple Airlines

Deal found 29/7C$ 440

Wed 10/96:10 a.m.STL - YUL

1 stop9h 23mAmerican Airlines

Mon 15/95:15 p.m.YUL - STL

1 stop17h 11mAmerican Airlines

Deal found 30/7C$ 480

Thu 6/1112:20 p.m.STL - YUL

1 stop11h 25mMultiple Airlines

Sun 9/116:45 a.m.YUL - STL

3 stops30h 15mMultiple Airlines

Deal found 29/7C$ 657

Wed 10/91:30 p.m.STL - YUL

Nonstop2h 30mAir Canada

Wed 17/99:15 a.m.YUL - STL

1 stop7h 03mAir Canada

Deal found 29/7C$ 717

Wed 10/910:45 a.m.STL - YUL

2 stops10h 02mDelta

Wed 17/911:00 a.m.YUL - STL

1 stop10h 05mDelta

Deal found 29/7C$ 727

Best flights from Illinois to Pierre Elliott Trudeau Intl
Discover carefully curated flight deals from Illinois to Pierre Elliott Trudeau Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 31 July 2025.

Thu 23/105:20 p.m.MDW - YUL

1 stop3h 55mPorter Airlines

Sun 26/106:45 a.m.YUL - MDW

1 stop4h 20mPorter Airlines

Deal found 28/7C$ 270

Sat 20/912:33 p.m.ORD - YUL

1 stop8h 59mMultiple Airlines

Mon 22/98:20 a.m.YUL - ORD

Nonstop2h 31mMultiple Airlines

Deal found 30/7C$ 274

Sun 14/93:35 p.m.ORD - YUL

Nonstop2h 15mAir Canada

Fri 26/98:20 a.m.YUL - ORD

Nonstop2h 31mAir Canada

Deal found 30/7C$ 280

Wed 29/109:12 p.m.ORD - YUL

1 stop14h 12mAmerican Airlines

Sun 2/113:52 p.m.YUL - ORD

Nonstop3h 00mAmerican Airlines

Deal found 29/7C$ 283

Sat 20/91:43 p.m.MDW - YUL

1 stop8h 35mDelta

Wed 24/96:00 a.m.YUL - MDW

1 stop3h 40mDelta

Deal found 30/7C$ 327

Sat 23/86:00 p.m.ORD - YUL

Nonstop2h 29mUnited Airlines

Mon 25/86:15 a.m.YUL - ORD

Nonstop2h 46mUnited Airlines

Deal found 29/7C$ 410

Sat 20/93:45 p.m.ORD - YUL

1 stop7h 11mDelta

Mon 22/96:55 p.m.YUL - ORD

1 stop5h 59mDelta

Deal found 30/7C$ 327

Tue 7/105:20 p.m.MDW - YUL

1 stop3h 55mMultiple Airlines

Sat 11/102:45 p.m.YUL - MDW

1 stop19h 55mMultiple Airlines

Deal found 29/7C$ 440

Wed 10/96:10 a.m.STL - YUL

1 stop9h 23mAmerican Airlines

Mon 15/95:15 p.m.YUL - STL

1 stop17h 11mAmerican Airlines

Deal found 30/7C$ 480

Wed 10/91:30 p.m.STL - YUL

Nonstop2h 30mAir Canada

Wed 17/99:15 a.m.YUL - STL

1 stop7h 03mAir Canada

Deal found 29/7C$ 717

Thu 6/1112:20 p.m.STL - YUL

1 stop11h 25mMultiple Airlines

Sun 9/116:45 a.m.YUL - STL

3 stops30h 15mMultiple Airlines

Deal found 29/7C$ 657

Tue 14/103:23 p.m.STL - YUL

1 stop18h 17mUnited Airlines

Sun 19/108:20 a.m.YUL - STL

1 stop27h 29mUnited Airlines

Deal found 31/7C$ 753

Direct flights from Illinois to Pierre Elliott Trudeau Intl
Explore direct flight options from Illinois to Pierre Elliott Trudeau Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 31 July 2025.

Sun 14/910:40 a.m.ORD - YUL

Nonstop2h 14mAir Canada

Wed 24/96:40 p.m.YUL - ORD

Nonstop2h 31mAir Canada

Deal found 30/7C$ 280

Sun 31/88:10 a.m.ORD - YUL

Nonstop2h 26mAmerican Airlines

Tue 2/95:29 p.m.YUL - ORD

Nonstop2h 36mAmerican Airlines

Deal found 30/7C$ 359

Thu 4/96:00 p.m.ORD - YUL

Nonstop2h 29mMultiple Airlines

Mon 8/98:20 a.m.YUL - ORD

Nonstop2h 31mMultiple Airlines

Deal found 29/7C$ 392

Sat 23/86:00 p.m.ORD - YUL

Nonstop2h 29mUnited Airlines

Mon 25/86:15 a.m.YUL - ORD

Nonstop2h 46mUnited Airlines

Deal found 29/7C$ 408

Mon 1/91:30 p.m.STL - YUL

Nonstop2h 30mAir Canada

Fri 5/96:10 p.m.YUL - STL

Nonstop2h 47mAir Canada

Deal found 29/7C$ 759

Tue 2/91:30 p.m.STL - YUL

Nonstop2h 30mMultiple Airlines

Fri 5/96:10 p.m.YUL - STL

Nonstop2h 47mMultiple Airlines

Deal found 29/7C$ 1,196

Mon 11/81:30 p.m.STL - YUL

Nonstop2h 30mUnited Airlines

Mon 18/86:10 p.m.YUL - STL

Nonstop2h 50mUnited Airlines

Deal found 29/7C$ 1,639

Last-minute flights from Illinois to Pierre Elliott Trudeau Intl
Discover last-minute flight deals from Illinois to Pierre Elliott Trudeau Intl. Data last updated 31 July 2025 and is based on user searches.

Tue 5/85:40 p.m.STL - YUL

2 stops18h 41mMultiple Airlines

Tue 12/81:10 p.m.YUL - STL

2 stops21h 01mMultiple Airlines

Deal found 29/7C$ 699

Wed 6/86:00 a.m.STL - YUL

1 stop14h 28mDelta

Wed 13/86:00 a.m.YUL - STL

1 stop9h 43mDelta

Deal found 29/7C$ 901

Wed 6/88:43 a.m.STL - YUL

2 stops7h 11mAmerican Airlines

Tue 12/810:34 a.m.YUL - STL

2 stops11h 28mAmerican Airlines

Deal found 29/7C$ 1,072

Thu 7/88:38 p.m.MDW - YUL

2 stops26h 59mMultiple Airlines

Thu 14/81:10 p.m.YUL - MDW

1 stop4h 14mMultiple Airlines

Deal found 28/7C$ 694

Thu 7/82:00 p.m.ORD - YUL

1 stop8h 08mDelta

Sun 10/812:46 p.m.YUL - ORD

1 stop9h 44mDelta

Deal found 29/7C$ 730

Thu 7/812:43 p.m.MDW - YUL

1 stop10h 12mDelta

Sat 16/87:00 a.m.YUL - MDW

1 stop9h 28mDelta

Deal found 30/7C$ 760

Fri 8/85:20 p.m.MDW - YUL

1 stop3h 55mPorter Airlines

Wed 13/81:10 p.m.YUL - MDW

1 stop4h 14mPorter Airlines

Deal found 29/7C$ 530

Fri 8/88:25 p.m.ORD - YUL

1 stop12h 21mAmerican Airlines

Fri 15/85:29 p.m.YUL - ORD

Nonstop2h 36mAmerican Airlines

Deal found 29/7C$ 592

Fri 8/85:05 a.m.ORD - YUL

3 stops16h 10mMultiple Airlines

Fri 15/86:45 a.m.YUL - ORD

2 stops18h 14mMultiple Airlines

Deal found 29/7C$ 626

Fri 8/82:07 p.m.ORD - YUL

Nonstop2h 19mUnited Airlines

Tue 12/89:45 a.m.YUL - ORD

Nonstop2h 39mUnited Airlines

Deal found 29/7C$ 628

Sat 9/83:35 p.m.ORD - YUL

Nonstop2h 15mAir Canada

Tue 12/88:20 a.m.YUL - ORD

Nonstop2h 32mAir Canada

Deal found 29/7C$ 578

Sun 10/812:43 p.m.MDW - YUL

2 stops17h 25mWestJet

Fri 15/812:47 p.m.YUL - MDW

1 stop9h 57mWestJet

Deal found 29/7C$ 870

One-way flights from Illinois to Pierre Elliott Trudeau Intl
Search for one-way flight options from Illinois to Pierre Elliott Trudeau Intl. Find affordable one-way fares based on user searches. Data last updated 31 July 2025.

Sat 13/99:51 a.m.ORD - YUL

1 stop11h 41mAmerican Airlines

Deal found 30/7C$ 127

Sun 7/99:35 a.m.MDW - YUL

1 stop5h 25mPorter Airlines

Deal found 29/7C$ 130

Wed 10/123:45 p.m.ORD - YUL

Nonstop2h 05mAir Canada

Deal found 30/7C$ 142

Wed 10/127:00 a.m.ORD - YUL

1 stop8h 00mDelta

Deal found 30/7C$ 156

Wed 17/96:30 a.m.ORD - YUL

2 stops13h 47mMultiple Airlines

Deal found 30/7C$ 170

Wed 27/87:11 a.m.ORD - YUL

Nonstop2h 29mUnited Airlines

Deal found 29/7C$ 182

Sat 15/117:58 p.m.STL - YUL

1 stop18h 13mAmerican Airlines

Deal found 30/7C$ 197

Tue 14/1010:35 a.m.STL - YUL

1 stop27h 15mMultiple Airlines

Deal found 30/7C$ 211

Thu 18/912:43 p.m.MDW - YUL

1 stop10h 13mDelta

Deal found 31/7C$ 221

Thu 18/99:35 a.m.MDW - YUL

1 stop6h 45mAir Transat

Deal found 31/7C$ 223

Thu 28/811:00 a.m.ORD - YUL

2 stops19h 08mWestJet

Deal found 29/7C$ 239

Mon 27/101:48 p.m.MDW - YUL

1 stop8h 33mWestJet

Deal found 29/7C$ 243

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Thu 23/10

5:20 p.m.-10:15 p.m.

1 stop3h 55m

Montreal Pierre Elliott Trudeau Intl

Sun 26/10

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

1 stop4h 20m

C$ 270

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 20/9

12:33 p.m.-10:32 p.m.

1 stop8h 59m

Montreal Pierre Elliott Trudeau Intl

Mon 22/9

8:20 a.m.-9:51 a.m.

Nonstop2h 31m

C$ 274

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sun 14/9

3:35 p.m.-6:50 p.m.

Nonstop2h 15m

Montreal Pierre Elliott Trudeau Intl

Fri 26/9

8:20 a.m.-9:51 a.m.

Nonstop2h 31m

C$ 280

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 29/10

9:12 p.m.-12:24 p.m.

1 stop14h 12m

Montreal Pierre Elliott Trudeau Intl

Sun 2/11

3:52 p.m.-5:52 p.m.

Nonstop3h 00m

C$ 283

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Sat 20/9

1:43 p.m.-11:18 p.m.

1 stop8h 35m

Montreal Pierre Elliott Trudeau Intl

Wed 24/9

6:00 a.m.-8:40 a.m.

1 stop3h 40m

C$ 327

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 20/9

3:45 p.m.-11:56 p.m.

1 stop7h 11m

Montreal Pierre Elliott Trudeau Intl

Mon 22/9

6:55 p.m.-11:54 p.m.

1 stop5h 59m

C$ 327

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 23/8

6:00 p.m.-9:29 p.m.

Nonstop2h 29m

Montreal Pierre Elliott Trudeau Intl

Mon 25/8

6:15 a.m.-8:01 a.m.

Nonstop2h 46m

C$ 410

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Tue 7/10

5:20 p.m.-10:15 p.m.

1 stop3h 55m

Montreal Pierre Elliott Trudeau Intl

Sat 11/10

2:45 p.m.-9:40 a.m.

1 stop19h 55m

C$ 440

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Wed 10/9

6:10 a.m.-4:33 p.m.

1 stop9h 23m

Montreal Pierre Elliott Trudeau Intl

Mon 15/9

5:15 p.m.-9:26 a.m.

1 stop17h 11m

C$ 480

St. LouisMontreal

STL - YUL

STLYUL

Lambert-St Louis

Thu 6/11

12:20 p.m.-12:45 a.m.

1 stop11h 25m

Montreal Pierre Elliott Trudeau Intl

Sun 9/11

6:45 a.m.-12:00 p.m.

3 stops30h 15m

C$ 657

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/7

Showing 1-10 of 29 results

Best time to book a flight from Illinois to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from Illinois 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 Illinois to Montreal Pierre Elliott Trudeau Intl Airport

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

Currently, October is the cheapest month in which you can book a flight from Illinois to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 241). Flying from Illinois to Montreal Pierre Elliott Trudeau Intl Airport in April is currently the most expensive (average of C$ 316). 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 IL to YUL?

When flying from Illinois to Montreal Pierre Elliott Trudeau Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Read through reviews of airlines operating flights from Illinois to Montreal Pierre Elliott Trudeau Intl Airport, such as Porter Airlines,Delta, andAir Transat. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Everything was on time and easy. Crew were nice on flights and helpful. International flight, so long and typically uncomfortable but not more than most. Food and drink service were below average but you get what you pay for. Overall, good experience

Porter Airlines

8.0

Very good

318 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Delta

8.0

Very good

7,980 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Air Transat

7.7

Good

424 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

United Airlines

7.4

Good

8,902 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

American Airlines

7.2

Good

10,000 reviews

Porter Airlines

8.0

Very good

318 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

Anonymous,Jul 2025

LIS - YYZ

Related info for your journey

What are the cheapest airlines to fly from Illinois to Montreal Pierre Elliott Trudeau Intl Airport one-way?
To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at C$ 127. Porter Airlines flights start at C$ 130 while deals on Air Canada start at C$ 142 one-way.
What are the most popular routes from Illinois to Montreal Pierre Elliott Trudeau Intl Airport?
The most popular route from Illinois to Montreal Pierre Elliott Trudeau Intl Airport is Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl. You may also consider Chicago Midway - Montreal Pierre Elliott Trudeau Intl or Lambert-St Louis - Montreal Pierre Elliott Trudeau Intl.
What are the most reliable airlines from Illinois to Montreal Pierre Elliott Trudeau Intl Airport?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Illinois to Montreal Pierre Elliott Trudeau Intl Airport on time: Republic Airways (90%), Emirates (87%), Alaska Airlines (87%).
What are the cheapest flights from Illinois to Montreal Pierre Elliott Trudeau Intl Airport?
Looking at all options, your cheapest flight can be booked for C$ 114. While the most popular route (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl) can be booked for C$ 272 on average our data indicates C$ 231 when flying from Illinois to Montreal Pierre Elliott Trudeau Intl Airport.
Can I find deals for flights from Illinois to Pierre Elliott Trudeau Intl that include hotel bookings?
Yes. In addition to deals on Illinois to Pierre Elliott Trudeau Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Illinois to Pierre Elliott Trudeau Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to Pierre Elliott Trudeau Intl.
Can I find deals for business class flights from Illinois to Pierre Elliott Trudeau Intl?
Yes. Cheapflights offers flight deals from Illinois to Pierre Elliott Trudeau Intl 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 Illinois to Montreal Pierre Elliott Trudeau Intl Airport?
Currently, October is the cheapest month in which you can book a flight from Illinois to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 241). Flying from Illinois to Montreal Pierre Elliott Trudeau Intl Airport in April is currently the most expensive (average of C$ 316). 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

Laval

Longueuil

Sherbrooke

Cornwall

Brossard

Dorval

Montebello

Drummondville

Trois-Rivières

Saint-Jean-sur-Richelieu

Boucherville

Saint-Sauveur

Bromont

North Hatley

Louiseville

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Illinois to Pierre Elliott Trudeau Intl

Airline	Cheapest	Average	Flexibility	On-time
Air Canada	CheapestC$ 305	AverageC$ 682	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

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

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 Pierre Elliott Trudeau Intl from Illinois today with Cheapflights!

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

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

Yes! Cheapflights helps users easily find flights from Illinois to Pierre Elliott Trudeau Intl with no change fees.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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Cheap flights from Illinois to Montreal Pierre Elliott Trudeau Intl Airport from C$ 127

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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Illinois to Pierre Elliott Trudeau Intl

Keep the following information in mind while searching for Illinois to Pierre Elliott Trudeau Intl flight deals. Data was last updated 31 July 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to Pierre Elliott Trudeau Intl

Cheapest flights from Illinois to Pierre Elliott Trudeau IntlExplore the most affordable flight options available from Illinois to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.

Explore the most affordable flight options available from Illinois to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Best time to book a flight from Illinois to Pierre Elliott Trudeau Intl

Have a flexible travel schedule? Discover the best time to fly to Pierre Elliott Trudeau Intl from Illinois with our price prediction graph.

Cheapflights Insights

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

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

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

Find hourly flight availability from Illinois to Pierre Elliott Trudeau Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 31 July 2025.

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

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Read through reviews of airlines operating flights from Illinois to Montreal Pierre Elliott Trudeau Intl Airport, such as Porter Airlines,Delta, andAir Transat. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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Cheapest flights from Illinois to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Illinois to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 31 July 2025.