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Cheap flights from Illinois to Montreal Pierre Elliott Trudeau Intl Airport from C$ 149

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 23/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YUL
15 Oct — 22 Oct1
1 adult
1 adult, Economy

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 15 September 2025.

Round-trip from

C$ 361

One-way from

C$ 149

Popular in

December

Cheapest in

October

Average price

C$ 427

Good round-trip deal

C$ 223 or less

Good one-way deal

C$ 122 or less
Porter Airlines
  • Porter Airlines
  • 30/10-6/11
  • 2 total stops
  • 11h 35m total
  • Illinois to Montreal
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23/10
  • 23/10
  • 2 total stops
  • 10h 34m total
  • Illinois to Montreal
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 32 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 September 2025
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Price to beat on a round-trip flight from Illinois to Montreal Pierre Elliott Trudeau Intl.
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Price to beat on a one-way flight from Illinois to Montreal Pierre Elliott Trudeau Intl.
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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 15 September 2025.

Thu 30/104:15 p.m.MDW - YUL
1 stop5h 30mPorter Airlines
Thu 6/1110:15 a.m.YUL - MDW
1 stop6h 05mPorter Airlines
Deal found 15/9C$ 361
Thu 23/109:35 a.m.MDW - YUL
1 stop5h 25mPorter Airlines
Sun 26/1011:25 a.m.YUL - MDW
1 stop4h 55mPorter Airlines
Deal found 15/9C$ 362
Thu 30/1011:00 a.m.MDW - YUL
1 stop4h 30mPorter Airlines
Sun 2/1110:15 a.m.YUL - MDW
1 stop6h 05mPorter Airlines
Deal found 13/9C$ 363
Fri 10/105:20 p.m.MDW - YUL
1 stop3h 55mPorter Airlines
Wed 15/101:10 p.m.YUL - MDW
1 stop4h 14mPorter Airlines
Deal found 15/9C$ 365
Thu 30/1011:00 a.m.MDW - YUL
1 stop5h 45mPorter Airlines
Mon 3/1111:25 a.m.YUL - MDW
1 stop4h 55mPorter Airlines
Deal found 13/9C$ 366
Fri 7/1111:00 a.m.MDW - YUL
1 stop4h 30mPorter Airlines
Sun 16/116:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Deal found 13/9C$ 373
Fri 21/114:15 p.m.MDW - YUL
1 stop5h 30mPorter Airlines
Sun 30/116:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Deal found 15/9C$ 374
Fri 10/105:20 p.m.MDW - YUL
1 stop3h 55mPorter Airlines
Tue 14/101:10 p.m.YUL - MDW
1 stop4h 14mPorter Airlines
Deal found 13/9C$ 377
Wed 29/1012:50 p.m.ORD - YUL
Nonstop2h 07mAir Canada
Sat 1/116:15 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Deal found 13/9C$ 380
Thu 23/1010:40 a.m.ORD - YUL
Nonstop2h 14mAir Canada
Sun 26/106:15 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Deal found 14/9C$ 381
Tue 7/105:20 p.m.MDW - YUL
1 stop3h 55mPorter Airlines
Tue 14/1010:45 a.m.YUL - MDW
1 stop6h 39mPorter Airlines
Deal found 12/9C$ 385
Thu 30/1012:50 p.m.ORD - YUL
Nonstop2h 07mAir Canada
Thu 6/111:10 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Deal found 15/9C$ 385

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Pierre Elliott Trudeau Intl 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 15 September 2025.
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

Illinois

Fly to

Pierre Elliott Trudeau Intl

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

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

1 stop4h 55m

C$ 363

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Fri 24/10

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

1 stop3h 55m

Montreal Pierre Elliott Trudeau Intl

Sun 26/10

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

1 stop4h 55m

C$ 365

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Thu 30/10

11:00 a.m.-4:30 p.m.

1 stop4h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 3/11

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

1 stop4h 20m

C$ 366

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Mon 20/10

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

1 stop3h 55m

Montreal Pierre Elliott Trudeau Intl

Thu 23/10

1:10 p.m.-4:24 p.m.

1 stop4h 14m

C$ 377

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Thu 9/10

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

1 stop3h 55m

Montreal Pierre Elliott Trudeau Intl

Sun 12/10

8:55 a.m.-4:24 p.m.

1 stop8h 29m

C$ 412

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Thu 20/11

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

1 stop5h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 23/11

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

1 stop4h 20m

C$ 413

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Fri 12/12

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

1 stop5h 30m

Montreal Pierre Elliott Trudeau Intl

Tue 23/12

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

1 stop4h 55m

C$ 413

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Thu 4/12

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

1 stop5h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 7/12

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

1 stop4h 20m

C$ 413

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Fri 3/10

9:35 a.m.-6:45 p.m.

1 stop8h 10m

Montreal Pierre Elliott Trudeau Intl

Wed 8/10

1:10 p.m.-4:24 p.m.

1 stop4h 14m

C$ 421

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Fri 3/10

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

1 stop3h 55m

Montreal Pierre Elliott Trudeau Intl

Tue 7/10

1:10 p.m.-4:24 p.m.

1 stop4h 14m

C$ 421

Flights are sorted by cheapest round-trip flights first.

Deals found on 13/9

Showing 1-10 of 56 results
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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$ 317). 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?

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 15 September 2025.

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

Explore weekly flight availability from Illinois to Pierre Elliott Trudeau Intl. 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 15 September 2025.

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

Related info for your journey

Find useful and relevant information for your journey from Illinois to Pierre Elliott Trudeau Intl. 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 Illinois to Montreal Pierre Elliott Trudeau Intl Airport?

    There are many flights that can get you from Illinois to Montreal Pierre Elliott Trudeau Intl Airport in 2h 22m. Fly via Porter Airlines, United Airlines, or American Airlines to get the fastest option. There are 1199 km between Illinois and Montreal Pierre Elliott Trudeau Intl Airport. Both multi-stop and direct flights can be found to your destination and back.

  • 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 Porter Airlines, which is currently one of the cheapest options available, starting at C$ 164. United Airlines flights start at C$ 182 while deals on American Airlines start at C$ 242 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 (82%), Alaska Airlines (82%), Copa Airlines (77%).

  • 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$ 81. While the most popular route (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl) can be booked for C$ 398 on average, our data indicates C$ 308 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$ 317). 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

Travelling to a place near Montreal Pierre Elliott Trudeau Intl Airport?

Book flights to Montreal Pierre Elliott Trudeau Intl Airport if you plan to visit one of these locations
Laval
Dorval
Sherbrooke
Cornwall
Brossard
Longueuil
Montebello
Trois-Rivières
Drummondville
Saint-Jean-sur-Richelieu
Boucherville
Bromont
North Hatley
Louiseville

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Alternative routes for Illinois to Pierre Elliott Trudeau Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Illinois to Pierre Elliott Trudeau Intl

Discover the top airline that operate flights from Illinois to Pierre Elliott Trudeau Intl. 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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 340AverageC$ 666FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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