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Cheap flights from Chicago 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.
CHI — YUL
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Chicago to Montreal Pierre Elliott Trudeau Intl are usually found in October or September, booked 51 days in advance, depart on a Thursday or Monday and return on a Friday

Cheap flight deals from Chicago to Pierre Elliott Trudeau Intl

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Pierre Elliott Trudeau Intl (YUL). 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 17 September 2025.

Round-trip from

C$ 359

One-way from

C$ 149

Popular in

December

Cheapest in

October

Average price

C$ 389

Good round-trip deal

C$ 222 or less

Good one-way deal

C$ 121 or less
Porter Airlines
  • Porter Airlines
  • 30/10-6/11
  • 2 total stops
  • 11h 35m total
  • Chicago to Montreal
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23/10
  • 23/10
  • 2 total stops
  • 10h 34m total
  • Chicago to Montreal
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Highest demand for flights based on searches. 4% potential increase in price (C$ 36 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 19 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Chicago (CHI) to Montreal Pierre Elliott Trudeau Intl.
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Price to beat on a one-way flight from Chicago (CHI) to Montreal Pierre Elliott Trudeau Intl.
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Find flight deals from Chicago to Pierre Elliott Trudeau Intl

Cheapest flights from Chicago to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from Chicago to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 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$ 359
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$ 360
Wed 15/105:20 p.m.MDW - YUL
1 stop3h 55mPorter Airlines
Thu 23/1010:45 a.m.YUL - MDW
1 stop6h 39mPorter Airlines
Deal found 15/9C$ 362
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$ 363
Fri 31/1011:00 a.m.MDW - YUL
1 stop6h 45mPorter Airlines
Fri 7/116:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Deal found 15/9C$ 366
Fri 7/1111:00 a.m.MDW - YUL
1 stop4h 30mPorter Airlines
Mon 10/116:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Deal found 15/9C$ 371
Fri 17/105:20 p.m.MDW - YUL
1 stop3h 55mPorter Airlines
Wed 22/1010:45 a.m.YUL - MDW
1 stop6h 39mPorter Airlines
Deal found 16/9C$ 373
Thu 30/1011:00 a.m.MDW - YUL
1 stop4h 30mPorter Airlines
Sun 2/115:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Deal found 16/9C$ 374
Mon 10/1111:00 a.m.MDW - YUL
1 stop4h 30mPorter Airlines
Thu 13/116:45 a.m.YUL - MDW
1 stop4h 20mPorter Airlines
Deal found 14/9C$ 376
Sun 12/105:20 p.m.MDW - YUL
1 stop3h 55mPorter Airlines
Tue 14/101:10 p.m.YUL - MDW
1 stop4h 14mPorter Airlines
Deal found 16/9C$ 378
Tue 7/105:20 p.m.MDW - YUL
1 stop3h 55mPorter Airlines
Wed 8/101:10 p.m.YUL - MDW
1 stop4h 14mPorter Airlines
Deal found 16/9C$ 380
Thu 30/1012:50 p.m.ORD - YUL
Nonstop2h 07mAir Canada
Sun 2/119:25 a.m.YUL - ORD
Nonstop2h 53mAir Canada
Deal found 16/9C$ 384

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago 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 17 September 2025.
Use the filters below to find and compare flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Chicago

Fly to

Pierre Elliott Trudeau Intl

Route

Depart

Return

Price

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Fri 31/10

11:00 a.m.-6:45 p.m.

1 stop6h 45m

Montreal Pierre Elliott Trudeau Intl

Fri 7/11

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

1 stop4h 20m

C$ 366

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Mon 10/11

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

1 stop4h 30m

Montreal Pierre Elliott Trudeau Intl

Thu 13/11

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

1 stop4h 20m

C$ 376

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Thu 30/10

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

1 stop5h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 3/11

10:15 a.m.-3:20 p.m.

1 stop6h 05m

C$ 378

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

Mon 27/10

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

1 stop4h 55m

C$ 378

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Fri 7/11

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

1 stop4h 30m

Montreal Pierre Elliott Trudeau Intl

Mon 10/11

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

1 stop4h 55m

C$ 378

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Thu 20/11

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

1 stop4h 30m

Montreal Pierre Elliott Trudeau Intl

Sun 23/11

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

1 stop4h 20m

C$ 389

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Wed 15/10

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

1 stop3h 55m

Montreal Pierre Elliott Trudeau Intl

Mon 20/10

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

1 stop8h 29m

C$ 410

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 15/10

7:11 a.m.-10:40 a.m.

Nonstop2h 29m

Montreal Pierre Elliott Trudeau Intl

Wed 15/10

2:20 p.m.-7:58 p.m.

1 stop6h 38m

C$ 411

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

Fri 19/12

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

1 stop4h 20m

C$ 411

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Fri 10/10

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

1 stop3h 55m

Montreal Pierre Elliott Trudeau Intl

Tue 14/10

10:45 a.m.-4:24 p.m.

1 stop6h 39m

C$ 411

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 43 results
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Best time to book a flight from Chicago to Pierre Elliott Trudeau Intl

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

How far ahead should I book a flight from Chicago to Montreal Pierre Elliott Trudeau Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Chicago to Pierre Elliott Trudeau Intl. Price data was last updated on 12 September 2025.

Booking 51 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from Chicago to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 241). Flying from Chicago 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 CHI to YUL?

Find hourly flight availability from Chicago 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 17 September 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 49% on flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport by exploring options for tickets at noon.

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

Explore weekly flight availability from Chicago 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 17 September 2025.

The most flights from CHI to YUL are scheduled on a Monday (30 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (27 on average).

Related info for your journey

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

    There are many flights that can get you from Chicago to Montreal Pierre Elliott Trudeau Intl Airport in 2h 29m. Fly via Porter Airlines or United Airlines to get the fastest option. Airlines will cover a distance of 1199 km. Both multi-stop and direct flights can be found to your destination and back.

  • What is the cheapest airline to fly from Chicago to Montreal Pierre Elliott Trudeau Intl Airport round-trip?

    Cheapflights users have booked flights from Chicago to Montreal Pierre Elliott Trudeau Intl Airport round-trip from C$ 338. This flight start at 34% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Chicago 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 Chicago to Montreal Pierre Elliott Trudeau Intl Airport on time: American Airlines (83%), Envoy Air (83%), Republic Airways (83%).

  • What are the cheapest flights from Chicago 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$ 396 on average, our data indicates C$ 306 when flying from Chicago to Montreal Pierre Elliott Trudeau Intl Airport.

  • Can I find deals for flights from Chicago to Pierre Elliott Trudeau Intl that include hotel bookings?

    Yes. In addition to deals on Chicago to Pierre Elliott Trudeau Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago 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 Chicago to Pierre Elliott Trudeau Intl.

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

    Yes. Cheapflights offers flight deals from Chicago 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 Chicago to Montreal Pierre Elliott Trudeau Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Chicago to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 241). Flying from Chicago 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

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 Chicago to Pierre Elliott Trudeau Intl

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Midway to Pierre Elliott Trudeau Intl flights
St. Louis to Pierre Elliott Trudeau Intl flights

Top airline flying from Chicago to Pierre Elliott Trudeau Intl

Discover the top airline that operate flights from Chicago 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 17 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 338AverageC$ 663FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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

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

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

Can Cheapflights notify me if prices for flights from Chicago to Pierre Elliott Trudeau Intl become cheaper?

Not ready to book yet? You can track prices for flights from Chicago to Pierre Elliott Trudeau Intl on Cheapflights with our Price Alert feature and get notified when better prices are available.

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