How long is the flight from Montreal to Illinois?

Airlines like United Airlines, Delta, and Air Canada fly from Montreal to Illinois in about 2h 36m. The time it takes to get you to your destination can typically vary by up to 2h 06m. There are 1199 km between Montreal and Illinois. Both multi-stop and direct flights can be found to your destination and back.

What are the cheapest airlines to fly from Montreal to Illinois one-way?

The cheapest airlines for a one-way flight from Montreal to Illinois are Air Canada (C$ 182), Porter Airlines (C$ 183), and American Airlines (C$ 233).

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 to Illinois?

The most popular flight routes from Montreal to Illinois are Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl, Montreal Pierre Elliott Trudeau Intl - Chicago Midway and Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis.

What are the cheapest flights from Montreal to Illinois?

While on average a flight from Montreal to Illinois is generally C$ 2,333, our data shows the cheapest flight currently is C$ 286. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), you can expect to pay C$ 388 for that flight.

What are the most reliable airlines from Montreal to Illinois?

No one likes to see their flight delayed. When booking a flight from Montreal to Illinois consider choosing ANA (85%), Avianca (85%) or Emirates (77%) as they are the most reliable in getting you off to your destination on time.

What are the most popular airlines that fly from Montreal to Illinois?

The most popular airlines flying from Montreal to Illinois are Air Canada, Porter Airlines and United Airlines. Something to consider prior to booking your flight.

Can I find deals for flights from Montreal to Illinois that include hotel bookings?

Yes. In addition to deals on Montreal to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Montreal to Illinois?

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

Can I find deals for business class flights from Montreal to Illinois?

Yes. Cheapflights offers flight deals from Montreal 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$ 230+ Cheap Flights from Montreal to Illinois

Cheap flight deals from Montreal to Illinois

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

Cheapest flights from Montreal to Illinois
Explore the most affordable flight options available from Montreal to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Thu 1/105:00 a.m. -

1 stop5h 00m

Mon 5/102:00 p.m. -

1 stop4h 45m

Deal found 13/9C$ 392

Fri 23/108:35 a.m. -

2 stops5h 48m

Mon 26/101:55 p.m. -

1 stop6h 50m

Deal found 13/9C$ 393

Fri 2/106:30 a.m. -

1 stop5h 30m

Sun 4/1011:45 a.m. -

1 stop5h 27m

Deal found 13/9C$ 393

Sat 10/106:30 p.m. -

Nonstop2h 42m

Wed 14/108:45 a.m. -

Nonstop2h 15m

Deal found 16/9C$ 395

Thu 1/109:00 a.m. -

1 stop6h 35m

Mon 5/103:20 p.m. -

1 stop4h 52m

Deal found 15/9C$ 395

Wed 14/108:35 a.m. -

Nonstop2h 37m

Tue 20/108:45 a.m. -

Nonstop2h 15m

Deal found 14/9C$ 396

Sun 11/1010:35 a.m. -

1 stop5h 00m

Sun 18/1011:45 a.m. -

1 stop5h 27m

Deal found 13/9C$ 396

Thu 1/1011:10 a.m. -

1 stop4h 45m

Sun 4/102:00 p.m. -

1 stop4h 45m

Deal found 15/9C$ 397

Thu 22/106:30 a.m. -

1 stop5h 30m

Sat 24/1011:45 a.m. -

1 stop5h 27m

Deal found 17/9C$ 397

Thu 12/113:10 p.m. -

1 stop5h 48m

Sun 15/111:55 p.m. -

1 stop4h 51m

Deal found 12/9C$ 399

Thu 1/106:30 a.m. -

1 stop5h 30m

Sun 4/103:20 p.m. -

1 stop4h 52m

Deal found 16/9C$ 399

Thu 29/101:10 p.m. -

Nonstop2h 42m

Thu 5/117:05 a.m. -

Nonstop2h 12m

Deal found 13/9C$ 400

Best flights from Montreal to Illinois
Discover carefully curated flight deals from Montreal to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Thu 15/109:45 a.m. -

Nonstop2h 36m

Wed 21/1010:54 a.m. -

1 stop7h 51m

Deal found 16/9C$ 424

Wed 14/1012:50 p.m. -

1 stop4h 42m

Sat 17/101:55 p.m. -

1 stop8h 30m

Deal found 14/9C$ 431

Thu 15/106:30 a.m. -

1 stop5h 30m

Sat 17/1011:45 a.m. -

1 stop5h 27m

Deal found 14/9C$ 437

Thu 4/34:45 p.m. -

Nonstop3h 00m

Sat 6/31:55 p.m. -

Nonstop2h 11m

Deal found 12/9C$ 478

Fri 16/104:55 p.m. -

Nonstop2h 46m

Wed 21/1012:10 p.m. -

Nonstop2h 31m

Deal found 15/9C$ 781

Thu 22/106:00 a.m. -

1 stop4h 32m

Tue 27/101:27 p.m. -

1 stop8h 58m

Deal found 15/9C$ 431

Thu 1/109:15 a.m. -

1 stop6h 11m

Sun 4/102:01 p.m. -

Nonstop2h 29m

Deal found 16/9C$ 432

Wed 14/106:00 a.m. -

1 stop4h 32m

Sat 17/106:44 p.m. -

1 stop3h 41m

Deal found 14/9C$ 431

Wed 14/109:45 a.m. -

Nonstop2h 36m

Wed 21/107:11 a.m. -

Nonstop2h 29m

Deal found 15/9C$ 467

Tue 8/126:00 a.m. -

1 stop4h 37m

Thu 10/121:41 p.m. -

1 stop8h 52m

Deal found 14/9C$ 432

Thu 8/106:10 a.m. -

Nonstop2h 41m

Wed 14/102:00 p.m. -

1 stop6h 45m

Deal found 13/9C$ 530

Tue 2/33:00 p.m. -

1 stop5h 52m

Wed 3/38:55 a.m. -

1 stop5h 07m

Deal found 16/9C$ 476

Tue 29/99:30 a.m. -

1 stop9h 34m

Fri 2/107:05 a.m. -

1 stop8h 14m

Deal found 15/9C$ 434

Thu 1/106:00 a.m. -

1 stop7h 59m

Thu 8/107:00 a.m. -

1 stop8h 15m

Deal found 15/9C$ 434

Wed 28/106:00 a.m. -

1 stop7h 47m

Wed 4/116:44 p.m. -

1 stop3h 41m

Deal found 13/9C$ 434

Fri 20/116:00 a.m. -

1 stop7h 51m

Sun 22/111:31 p.m. -

1 stop8h 56m

Deal found 12/9C$ 434

Thu 29/106:00 a.m. -

1 stop7h 47m

Thu 5/111:27 p.m. -

1 stop8h 58m

Deal found 14/9C$ 434

Tue 27/106:00 a.m. -

1 stop7h 47m

Tue 3/111:27 p.m. -

1 stop8h 58m

Deal found 12/9C$ 434

Thu 22/106:00 a.m. -

1 stop4h 32m

Thu 29/106:44 p.m. -

1 stop3h 41m

Deal found 15/9C$ 434

Sat 17/106:10 a.m. -

1 stop13h 50m

Wed 21/109:30 a.m. -

1 stop5h 40m

Deal found 14/9C$ 795

Thu 8/1011:23 a.m. -

1 stop5h 37m

Tue 13/108:00 a.m. -

2 stops10h 45m

Deal found 12/9C$ 795

Thu 15/104:55 p.m. -

1 stop7h 04m

Mon 19/1011:35 a.m. -

1 stop4h 55m

Deal found 12/9C$ 795

Wed 14/106:00 a.m. -

2 stops15h 43m

Sat 24/105:29 p.m. -

1 stop4h 56m

Deal found 16/9C$ 506

Fri 23/103:25 p.m. -

1 stop6h 44m

Tue 27/109:40 a.m. -

2 stops11h 02m

Deal found 14/9C$ 795

Thu 22/106:00 a.m. -

1 stop5h 29m

Wed 28/107:00 a.m. -

2 stops15h 25m

Deal found 15/9C$ 513

Tue 13/106:00 a.m. -

1 stop4h 49m

Tue 20/105:31 p.m. -

1 stop14h 01m

Deal found 15/9C$ 738

Tue 17/119:40 a.m. -

2 stops11h 49m

Sun 22/112:21 p.m. -

1 stop8h 06m

Deal found 15/9C$ 738

Thu 15/107:50 p.m. -

1 stop16h 57m

Mon 19/105:31 p.m. -

1 stop14h 01m

Deal found 15/9C$ 782

Sat 3/1012:49 p.m. -

1 stop8h 46m

Sun 4/106:40 a.m. -

1 stop4h 18m

Deal found 15/9C$ 794

Fri 23/107:00 a.m. -

1 stop8h 45m

Tue 3/114:00 p.m. -

1 stop6h 54m

Deal found 12/9C$ 795

Find flight deals from Montreal to Illinois

Round-trip from	C$ 392
One-way from	C$ 230
Popular in	July
Cheapest in	April
Average price	C$ 416
Good round-trip deal	C$ 545 or less
Good one-way deal	C$ 370 or less

Air Canada
1/10-5/10
2 total stops
9h 45m total
Montreal to Illinois

Search Deals

Air Canada
30/9-31/12
Nonstop
2h 37m total
Montreal to Illinois

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (C$ 76 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 September 2026

Search Deals

Price to beat on a round-trip flight from Montreal (YMQ) to Illinois.

Search Deals

Price to beat on a one-way flight from Montreal (YMQ) to Illinois.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 22/10

6:30 p.m.-8:12 p.m.

Nonstop2h 42m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 234

Quickest round-trip

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 3/10

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

Nonstop2h 36m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 234

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 15/10

6:10 a.m.-7:51 a.m.

Nonstop2h 41m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 234

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 16/10

6:10 a.m.-7:51 a.m.

Nonstop2h 41m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 234

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - MDW Chicago Midway

YULMDW

Montreal Pierre Elliott Trudeau Intl

Wed 14/10

9:00 a.m.-2:35 p.m.

1 stop6h 35m

Chicago Midway

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 250

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 12/3

12:45 p.m.-8:37 p.m.

1 stop8h 52m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 257

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - MDW Chicago Midway

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 7/1

6:00 a.m.-12:33 p.m.

1 stop7h 33m

Chicago Midway

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 257

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 28/10

6:00 a.m.-12:59 p.m.

1 stop7h 59m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 258

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 7/10

9:30 a.m.-6:20 p.m.

1 stop9h 50m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 258

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 26/9

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

Nonstop2h 36m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 258

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/9

Showing 1-10 of 60 resultsSorted by cheapest first

...

Best time to book a flight from Montreal to Illinois

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

YUL-ORD

YUL-MDW

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 to Illinois

YMQ-USIL

YUL-ORD

YUL-MDW

YUL-STL

What is the cheapest month to book a flight from Montreal to Illinois?

Currently, April is the cheapest month in which you can book a flight from Montreal to Illinois (average of C$ 388). Flying from Montreal to Illinois in October is currently the most expensive (average of C$ 544). 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 YMQ to IL?

Unlike at noon, when flights are generally more expensive, you can save up to 62% on flights from Montreal to Illinois by exploring options for tickets in the evening.

Weekly flight availability from Montreal to Illinois

The most flights from YMQ to USIL are scheduled on a Wednesday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 on average).

How much does it cost to fly round-trip from Montreal to Illinois?

Airfare is typical for this route at the moment.

Montreal to Illinois flights typically cost between C$ 390 and C$ 595 in October.
The cheapest round-trip price found within the last 5 days was C$ 392 on Air Canada (1 Oct-5 Oct).

How far ahead should I book a flight from Montreal to Illinois?

The best time to book flights from Montreal to Illinois is 87 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Illinois

Read reviews from past customers who have flown Porter Airlines,Delta, andUnited Airlines from Montreal to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Porter Airlines

8.0

Very good

462 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Porter Airlines

8.0

Very good

462 reviews

Porter Airlines

8.0

Very good

462 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Delta

7.8

Good

8,579 reviews

Porter Airlines

8.0

Very good

462 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

United Airlines

7.4

Good

10,214 reviews

Porter Airlines

8.0

Very good

462 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

American Airlines

7.1

Good

12,076 reviews

Porter Airlines

8.0

Very good

462 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Air Canada

7.1

Good

11,640 reviews

Porter Airlines

8.0

Very good

462 reviews

Check prices

Reviews

1 / 20

8.0

Excellent

D,Sep 2026

YHM - YVR

Related info for your journey

How long is the flight from Montreal to Illinois?
Airlines like United Airlines, Delta, and Air Canada fly from Montreal to Illinois in about 2h 36m. The time it takes to get you to your destination can typically vary by up to 2h 06m. There are 1199 km between Montreal and Illinois. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines to fly from Montreal to Illinois one-way?
The cheapest airlines for a one-way flight from Montreal to Illinois are Air Canada (C$ 182), Porter Airlines (C$ 183), and American Airlines (C$ 233).
What are the most popular routes from Montreal to Illinois?
The most popular flight routes from Montreal to Illinois are Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl, Montreal Pierre Elliott Trudeau Intl - Chicago Midway and Montreal Pierre Elliott Trudeau Intl - Lambert-St Louis.
What are the most reliable airlines from Montreal to Illinois?
No one likes to see their flight delayed. When booking a flight from Montreal to Illinois consider choosing ANA (85%), Avianca (85%) or Emirates (77%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Montreal to Illinois?
While on average a flight from Montreal to Illinois is generally C$ 2,333, our data shows the cheapest flight currently is C$ 286. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), you can expect to pay C$ 388 for that flight.
Can I find deals for flights from Montreal to Illinois that include hotel bookings?
Yes. In addition to deals on Montreal to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Montreal to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Montreal to Illinois.
Can I find deals for business class flights from Montreal to Illinois?
Yes. Cheapflights offers flight deals from Montreal 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 to Illinois?
Currently, April is the cheapest month in which you can book a flight from Montreal to Illinois (average of C$ 388). Flying from Montreal to Illinois in October is currently the most expensive (average of C$ 544). 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 Montreal to Illinois

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Top 4 airlines flying from Montreal to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Porter Airlines	CheapestC$ 244	AverageC$ 462	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights
United Airlines	CheapestC$ 260	AverageC$ 525	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
American Airlines	CheapestC$ 267	AverageC$ 469	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	CheapestC$ 325	AverageC$ 580	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights

Fly with Cheapflights

How does Cheapflights help users find flights from Montreal to Illinois?

When you search for this flight from Montreal to Illinois, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Montreal 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 Montreal.

Can Cheapflights find flights from Montreal to Illinois with no change fees?

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

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Cheap flights from Montreal to Illinois from C$ 230

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Montreal to Illinois

Cheapest flights from Montreal to IllinoisExplore the most affordable flight options available from Montreal to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Explore the most affordable flight options available from Montreal to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Best flights from Montreal to IllinoisDiscover carefully curated flight deals from Montreal to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Discover carefully curated flight deals from Montreal to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Direct flights from Montreal to IllinoisExplore direct flight options from Montreal to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Explore direct flight options from Montreal to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Last-minute flights from Montreal to IllinoisDiscover last-minute flight deals from Montreal to Illinois. Data last updated 17 September 2026 and is based on user searches.

Discover last-minute flight deals from Montreal to Illinois. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Montreal to IllinoisSearch for one-way flight options from Montreal to Illinois. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Search for one-way flight options from Montreal to Illinois. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Find flight deals from Montreal to Illinois

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One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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Use the filters below to find and compare flights from Montreal to Illinois that are best for you.

Best time to book a flight from Montreal to Illinois

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

Cheapflights Insights

What is the cheapest month to book a flight from Montreal to Illinois?

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

Find hourly flight availability from Montreal 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 17 September 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 62% on flights from Montreal to Illinois by exploring options for tickets in the evening.

Weekly flight availability from Montreal to Illinois

Explore weekly flight availability from Montreal 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 17 September 2026.

The most flights from YMQ to USIL are scheduled on a Wednesday (33 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (24 on average).

How much does it cost to fly round-trip from Montreal to Illinois?

Airfare is typical for this route at the moment.

Montreal to Illinois flights typically cost between C$ 390 and C$ 595 in October.The cheapest round-trip price found within the last 5 days was C$ 392 on Air Canada (1 Oct-5 Oct).

How far ahead should I book a flight from Montreal to Illinois?

The best time to book flights from Montreal to Illinois is 87 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Reviews of airlines servicing Illinois

Read reviews from past customers who have flown Porter Airlines,Delta, andUnited Airlines from Montreal to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

How long is the flight from Montreal to Illinois?

What are the cheapest airlines to fly from Montreal to Illinois one-way?

What are the most popular routes from Montreal to Illinois?

What are the most reliable airlines from Montreal to Illinois?

What are the cheapest flights from Montreal to Illinois?

Can I find deals for flights from Montreal to Illinois that include hotel bookings?

How can I find direct flights from Montreal to Illinois?

Can I find deals for business class flights from Montreal to Illinois?

What is the cheapest month to book a flight from Montreal to Illinois?

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Alternative routes for Montreal to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Complete your trip

Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.

Direct flights to United States

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Search flights from Montreal to Illinois by cabin class

Find flights from Montreal to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Montreal and Illinois flights

Browse other Montreal and Illinois flight options. Last updated on 17 September 2026.

Popular flight searches

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Montreal to Illinois flights

Consider these flights travelling from Montreal to Illinois.

Top 4 airlines flying from Montreal to Illinois

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Cheapest flights from Montreal to Illinois
Explore the most affordable flight options available from Montreal to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2026.

Best flights from Montreal to Illinois
Discover carefully curated flight deals from Montreal to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 17 September 2026.

Direct flights from Montreal to Illinois
Explore direct flight options from Montreal to Illinois based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 September 2026.

Last-minute flights from Montreal to Illinois
Discover last-minute flight deals from Montreal to Illinois. Data last updated 17 September 2026 and is based on user searches.

One-way flights from Montreal to Illinois
Search for one-way flight options from Montreal to Illinois. Find affordable one-way fares based on user searches. Data last updated 17 September 2026.

Montreal to Illinois flights typically cost between C$ 390 and C$ 595 in October.
The cheapest round-trip price found within the last 5 days was C$ 392 on Air Canada (1 Oct-5 Oct).