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Cheap flights from Montreal to Illinois from C$ 186

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 24/2. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — ORD
10 Feb — 17 Feb1
1 adult

Cheap flight deals from Montreal to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 5 February 2025.

Round-trip from

C$ 382

One-way from

C$ 186

Popular in

November

Cheapest in

February

Average price

C$ 415

Good round-trip deal

C$ 496 or less

Good one-way deal

C$ 272 or less
Air Canada
  • Air Canada
  • 20/2-24/2
  • 2 total stops
  • 9h 17m total
  • Montreal to Illinois
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Porter Airlines
  • Porter Airlines
  • 24/2
  • 1 total stop
  • 4h 15m total
  • Montreal to Illinois
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (C$ 39 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).
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Average for round-trip flights in February 2025
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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.
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Find flight deals from Montreal to Illinois

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 5 February 2025.

Thu 20/28:15 a.m.YUL - ORD
1 stop4h 54mAir Canada
Mon 24/28:30 p.m.ORD - YUL
1 stop4h 23mAir Canada
Deal found 4/2C$ 382
Thu 17/46:50 a.m.YUL - MDW
1 stop4h 30mPorter Airlines
Sun 20/411:15 a.m.MDW - YUL
1 stop4h 35mPorter Airlines
Deal found 4/2C$ 386
Sun 9/36:05 a.m.YUL - ORD
1 stop6h 25mDelta
Wed 12/36:45 a.m.ORD - YUL
1 stop8h 15mDelta
Deal found 3/2C$ 387
Thu 20/212:49 p.m.YUL - MDW
1 stop6h 22mDelta
Mon 24/26:28 p.m.MDW - YUL
1 stop3h 54mDelta
Deal found 5/2C$ 389
Thu 3/49:15 a.m.YUL - ORD
Nonstop2h 32mMultiple Airlines
Sun 6/47:00 a.m.ORD - YUL
Nonstop2h 28mMultiple Airlines
Deal found 4/2C$ 392
Thu 20/22:20 p.m.YUL - ORD
1 stop10h 33mBritish Airways
Mon 24/28:30 p.m.ORD - YUL
1 stop12h 35mBritish Airways
Deal found 4/2C$ 403
Thu 20/24:00 p.m.YUL - ORD
1 stop7h 44mAmerican Airlines
Mon 24/25:18 p.m.ORD - YUL
1 stop4h 27mAmerican Airlines
Deal found 5/2C$ 405
Tue 11/36:45 a.m.YUL - STL
2 stops10h 57mMultiple Airlines
Tue 18/35:38 p.m.STL - YUL
2 stops23h 22mMultiple Airlines
Deal found 5/2C$ 408
Fri 25/46:20 p.m.YUL - ORD
Nonstop2h 40mUnited Airlines
Fri 2/58:00 p.m.ORD - YUL
1 stop11h 35mUnited Airlines
Deal found 5/2C$ 410
Mon 3/36:50 a.m.YUL - MDW
2 stops11h 43mMultiple Airlines
Fri 7/35:35 p.m.MDW - YUL
1 stop4h 10mMultiple Airlines
Deal found 4/2C$ 467
Tue 25/26:00 a.m.YUL - MDW
1 stop12h 43mWestJet
Sun 2/310:19 a.m.MDW - YUL
1 stop12h 21mWestJet
Deal found 3/2C$ 491
Wed 26/25:15 p.m.YUL - ORD
1 stop23h 54mWestJet
Wed 5/310:00 a.m.ORD - YUL
2 stops13h 39mWestJet
Deal found 5/2C$ 501

Find flights from Montreal to Illinois within your budget

Customize your flight search to find flights from Montreal 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 5 February 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 20/2

8:15 a.m.-12:09 p.m.

1 stop4h 54m

Chicago O'Hare Intl

Mon 24/2

8:30 p.m.-1:53 a.m.

1 stop4h 23m

C$ 382

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 17/4

6:50 a.m.-10:20 a.m.

1 stop4h 30m

Chicago Midway

Sun 20/4

11:15 a.m.-4:50 p.m.

1 stop4h 35m

C$ 386

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sun 9/3

6:05 a.m.-11:30 a.m.

1 stop6h 25m

Chicago O'Hare Intl

Wed 12/3

6:45 a.m.-4:00 p.m.

1 stop8h 15m

C$ 387

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 20/2

12:49 p.m.-6:11 p.m.

1 stop6h 22m

Chicago Midway

Mon 24/2

6:28 p.m.-11:22 p.m.

1 stop3h 54m

C$ 389

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 3/4

9:15 a.m.-10:47 a.m.

Nonstop2h 32m

Chicago O'Hare Intl

Sun 6/4

7:00 a.m.-10:28 a.m.

Nonstop2h 28m

C$ 392

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 20/2

2:20 p.m.-11:53 p.m.

1 stop10h 33m

Chicago O'Hare Intl

Mon 24/2

8:30 p.m.-10:05 a.m.

1 stop12h 35m

C$ 403

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 20/2

4:00 p.m.-10:44 p.m.

1 stop7h 44m

Chicago O'Hare Intl

Mon 24/2

5:18 p.m.-10:45 p.m.

1 stop4h 27m

C$ 405

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 28/3

4:50 p.m.-8:44 p.m.

1 stop4h 54m

Chicago O'Hare Intl

Thu 3/4

6:45 a.m.-11:57 a.m.

1 stop4h 12m

C$ 408

MontrealSt. Louis

YUL - STL

YULSTL

Montreal Pierre Elliott Trudeau Intl

Tue 11/3

6:45 a.m.-4:42 p.m.

2 stops10h 57m

Lambert-St Louis

Tue 18/3

5:38 p.m.-6:00 p.m.

2 stops23h 22m

C$ 408

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 25/4

6:20 p.m.-8:00 p.m.

Nonstop2h 40m

Chicago O'Hare Intl

Fri 2/5

8:00 p.m.-8:35 a.m.

1 stop11h 35m

C$ 410

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/2

Showing 1-10 of 34 results
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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.
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.

Travel insights for flights from Montreal to Illinois

Get recent, data-driven insights about flights from Montreal to Illinois including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Montreal to Illinois (average of C$ 261). Flying from Montreal to Illinois in March is currently the most expensive (average of C$ 355). 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?

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 5 February 2025.

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

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 5 February 2025.

The most flights from YMQ to USIL are scheduled on a Monday (16 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (12 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

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.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

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).

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 5 February 2025.
Get a feel of what it's like to fly with Delta, Porter Airlines and United Airlines from Montreal to Illinois by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,406 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,406 reviews
Delta
8.0
Very good
8,406 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Porter Airlines
7.9
Good
277 reviews
Delta
8.0
Very good
8,406 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,885 reviews
Delta
8.0
Very good
8,406 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,406 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

WestJet
7.2
Good
2,814 reviews
Delta
8.0
Very good
8,406 reviews
Check prices

Crew

8.5

Entertainment

7.9

Comfort

8.0

Food

7.3

Boarding

8.2

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Montreal to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 Porter Airlines (C$ 186), Air Canada (C$ 189), and Delta (C$ 220).

  • 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 Avianca (85%), ANA (85%) or Copa Airlines (82%) 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$ 1,497, our data shows the cheapest flight currently is C$ 237. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), you can expect to pay C$ 373 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, January is the cheapest month in which you can book a flight from Montreal to Illinois (average of C$ 261). Flying from Montreal to Illinois in March is currently the most expensive (average of C$ 355). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Montreal to Illinois

Discover the top 6 airlines that operate flights from Montreal 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 5 February 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 331AverageC$ 473FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 371AverageC$ 420FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 373AverageC$ 520FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 379AverageC$ 608FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 396AverageC$ 522FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 460AverageC$ 621FlexibilityNo cancel feeOn-time60%
Search WestJet 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 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.

Can Cheapflights notify me if prices for flights from Montreal to Illinois become cheaper?

Of course! You can now track prices for flights from Montreal to Illinois and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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