Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from C$ 227

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 25/11. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — ORD
27 Nov — 4 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Pierre Elliott Trudeau Intl to Illinois

Keep the following information in mind while searching for Pierre Elliott Trudeau Intl to Illinois flight deals. Data was last updated 28 October 2025.

Round-trip from

C$ 315

One-way from

C$ 227

Popular in

November

Cheapest in

September

Average price

C$ 443

Good round-trip deal

C$ 618 or less

Good one-way deal

C$ 327 or less
United Airlines
  • United Airlines
  • 4/4-8/4
  • 1 total stop
  • 7h 32m total
  • Montreal to Illinois
Porter Airlines
  • Porter Airlines
  • 25/11
  • 1 total stop
  • 4h 20m total
  • Montreal to Illinois
Highest demand for flights based on searches. 7% potential increase in price (C$ 52 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).
Average for round-trip flights in October 2025
Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to Illinois.
Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to Illinois.

Find flight deals from Pierre Elliott Trudeau Intl to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Pierre Elliott Trudeau Intl to Illinois
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 28 October 2025.

Thu 11/1211:25 a.m.YUL - MDW
1 stop4h 55mPorter Airlines
Mon 15/1211:00 a.m.MDW - YUL
1 stop4h 30mPorter Airlines
Deal found 27/10C$ 368
Thu 20/116:15 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Mon 24/117:05 a.m.ORD - YUL
Nonstop2h 05mAir Canada
Deal found 28/10C$ 369
Fri 12/126:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Fri 19/1211:00 a.m.MDW - YUL
1 stop4h 30mPorter Airlines
Deal found 28/10C$ 369
Tue 9/126:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Fri 12/1211:00 a.m.MDW - YUL
1 stop4h 30mPorter Airlines
Deal found 26/10C$ 371
Mon 17/112:00 p.m.YUL - ORD
1 stop6h 30mAir Canada
Sun 23/118:00 a.m.ORD - YUL
1 stop4h 22mAir Canada
Deal found 27/10C$ 375
Thu 18/1210:15 a.m.YUL - MDW
1 stop6h 05mPorter Airlines
Mon 12/111:00 a.m.MDW - YUL
1 stop5h 45mPorter Airlines
Deal found 28/10C$ 375
Sat 22/118:55 a.m.YUL - MDW
1 stop3h 55mPorter Airlines
Sat 29/1112:45 p.m.MDW - YUL
1 stop5h 05mPorter Airlines
Deal found 28/10C$ 378
Thu 11/126:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Thu 18/1211:00 a.m.MDW - YUL
1 stop6h 45mPorter Airlines
Deal found 27/10C$ 380
Sat 22/116:15 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Mon 24/117:05 a.m.ORD - YUL
Nonstop2h 05mAir Canada
Deal found 27/10C$ 382
Tue 25/116:00 a.m.YUL - ORD
Nonstop3h 00mUnited Airlines
Tue 2/1210:38 a.m.ORD - YUL
Nonstop2h 22mUnited Airlines
Deal found 27/10C$ 383
Thu 4/1210:15 a.m.YUL - MDW
1 stop6h 05mPorter Airlines
Sun 7/1211:00 a.m.MDW - YUL
1 stop4h 30mPorter Airlines
Deal found 26/10C$ 385
Mon 24/116:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Sat 29/1112:45 p.m.MDW - YUL
1 stop5h 05mPorter Airlines
Deal found 25/10C$ 386

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 28 October 2025.
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

Pierre Elliott Trudeau Intl

Fly to

Illinois

Route

Depart

Return

Price

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 4/4

9:25 a.m.-10:57 a.m.

Nonstop2h 32m

Chicago O'Hare Intl

Wed 8/4

9:00 a.m.-4:21 p.m.

1 stop6h 21m

C$ 315

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 2/3

3:11 p.m.-7:48 p.m.

1 stop5h 37m

Chicago O'Hare Intl

Mon 9/3

7:00 a.m.-5:55 p.m.

1 stop9h 55m

C$ 322

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 27/2

8:00 p.m.-7:50 a.m.

1 stop12h 50m

Chicago O'Hare Intl

Sun 8/3

9:01 p.m.-7:45 a.m.

1 stop9h 44m

C$ 324

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 4/4

6:00 a.m.-9:35 a.m.

1 stop4h 35m

Chicago O'Hare Intl

Wed 8/4

7:10 a.m.-5:04 p.m.

1 stop8h 54m

C$ 358

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 20/3

7:00 a.m.-2:33 p.m.

1 stop8h 33m

Chicago O'Hare Intl

Mon 23/3

8:15 p.m.-1:53 a.m.

1 stop4h 38m

C$ 369

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Thu 8/1

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

1 stop4h 20m

Chicago Midway

Fri 16/1

11:00 a.m.-7:15 p.m.

1 stop7h 15m

C$ 375

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Tue 30/12

11:25 a.m.-3:20 p.m.

1 stop4h 55m

Chicago Midway

Sat 3/1

4:15 p.m.-10:45 p.m.

1 stop5h 30m

C$ 375

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Sat 22/11

8:55 a.m.-11:50 a.m.

1 stop3h 55m

Chicago Midway

Sat 29/11

12:45 p.m.-6:50 p.m.

1 stop5h 05m

C$ 378

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 25/11

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

Nonstop3h 00m

Chicago O'Hare Intl

Tue 2/12

10:38 a.m.-2:00 p.m.

Nonstop2h 22m

C$ 383

MontrealChicago

YUL - MDW

YULMDW

Montreal Pierre Elliott Trudeau Intl

Mon 2/3

12:45 p.m.-9:46 p.m.

1 stop10h 01m

Chicago Midway

Mon 9/3

2:00 p.m.-11:39 p.m.

1 stop8h 39m

C$ 385

Flights are sorted by cheapest round-trip flights first.

Deals found on 26/10

Showing 1-10 of 49 results
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Best time to book a flight from Pierre Elliott Trudeau Intl to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Pierre Elliott Trudeau Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Currently, September is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois (average of C$ 183). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in March is currently the most expensive (average of C$ 358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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

Find hourly flight availability from Pierre Elliott Trudeau Intl to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 28 October 2025.

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 57% on your trip compared to booking a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Pierre Elliott Trudeau Intl to Illinois. Price data was last updated on 16 December 2024.

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight should consider departing on Saturday afternoons when fares are most often at their lowest. Thursday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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

Explore weekly flight availability from Pierre Elliott Trudeau Intl to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 28 October 2025.

The most flights from YUL to USIL are scheduled on a Monday (26 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (17 on average).

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 28 October 2025.
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.

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.0

Food

7.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from Pierre Elliott Trudeau Intl to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How long is the flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

    A quick flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois can take about 2h 32m. United Airlines provides one of the quickest options available for as low as C$ 315. The distance between Montreal Pierre Elliott Trudeau Intl Airport and Illinois is about 1199 km. Both multi-stop and direct flights can be found to your destination and back.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as C$ 228. However, be on the lookout for offers from Air Canada and Porter Airlines, as they are both options that can get you from Montreal Pierre Elliott Trudeau Intl Airport to Illinois for a low price.

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

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

    Consider Qatar Airways (97%), Qantas Airways (95%) or Emirates (93%) 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$ 235. While the most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl) can be booked for C$ 255 on average, our data indicates C$ 1,406 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, September is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois (average of C$ 183). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois in March is currently the most expensive (average of C$ 358). 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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Alternative routes for Pierre Elliott Trudeau Intl to Illinois

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

Top 4 airlines flying from Pierre Elliott Trudeau Intl to Illinois

Discover the top 4 airlines that operate flights from Pierre Elliott Trudeau Intl to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 28 October 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 180AverageC$ 457FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Porter AirlinesCheapestC$ 199AverageC$ 502FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
Air CanadaCheapestC$ 262AverageC$ 521FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 375AverageC$ 509FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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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.

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