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Cheap flights from Illinois to Montreal Pierre Elliott Trudeau Intl Airport from C$ 203

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 19/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YUL
1 Sep — 8 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Illinois to Pierre Elliott Trudeau Intl

Enter your travel dates to find the best prices.

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 2 August 2026.

Sun 1/117:05 a.m.
ORD
-
YUL
Nonstop2h 12m
Air Canada
Sun 1/114:30 p.m.
YUL
-
ORD
1 stop4h 51m
Air Canada
Deal found 31/7C$ 345
Sat 24/103:40 p.m.
ORD
-
YUL
Nonstop2h 21m
Air Canada
Sun 25/106:30 a.m.
YUL
-
ORD
1 stop7h 41m
Air Canada
Deal found 31/7C$ 378
Sat 12/98:45 a.m.
ORD
-
YUL
Nonstop2h 15m
Air Canada
Mon 14/94:30 p.m.
YUL
-
ORD
1 stop5h 11m
Air Canada
Deal found 31/7C$ 392
Sat 12/911:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Mon 14/96:30 a.m.
YUL
-
MDW
1 stop5h 30m
Porter Airlines
Deal found 1/8C$ 394
Wed 16/911:05 a.m.
ORD
-
YUL
Nonstop2h 15m
Air Canada
Wed 23/91:15 p.m.
YUL
-
ORD
Nonstop2h 37m
Air Canada
Deal found 2/8C$ 398
Sat 22/83:40 p.m.
ORD
-
YUL
Nonstop2h 23m
Air Canada
Wed 26/87:30 a.m.
YUL
-
ORD
1 stop6h 51m
Air Canada
Deal found 1/8C$ 402
Wed 9/93:20 p.m.
MDW
-
YUL
1 stop4h 52m
Porter Airlines
Tue 29/96:30 a.m.
YUL
-
MDW
1 stop5h 30m
Porter Airlines
Deal found 1/8C$ 404
Fri 9/1011:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Tue 13/106:30 a.m.
YUL
-
MDW
1 stop5h 30m
Porter Airlines
Deal found 31/7C$ 408
Mon 14/911:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Mon 21/96:30 a.m.
YUL
-
MDW
1 stop5h 30m
Porter Airlines
Deal found 31/7C$ 409
Thu 1/103:20 p.m.
MDW
-
YUL
1 stop4h 52m
Porter Airlines
Mon 5/106:30 a.m.
YUL
-
MDW
1 stop5h 30m
Porter Airlines
Deal found 1/8C$ 410
Wed 23/93:20 p.m.
MDW
-
YUL
1 stop4h 52m
Porter Airlines
Fri 25/96:30 a.m.
YUL
-
MDW
1 stop5h 30m
Porter Airlines
Deal found 1/8C$ 412
Tue 15/911:45 a.m.
MDW
-
YUL
1 stop5h 27m
Porter Airlines
Tue 22/99:00 a.m.
YUL
-
MDW
1 stop6h 35m
Porter Airlines
Deal found 1/8C$ 413

Find 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 2 August 2026.

Round-trip from

C$ 345

One-way from

C$ 203

Popular in

July

Cheapest in

April

Average price

C$ 586

Good round-trip deal

C$ 324 or less

Good one-way deal

C$ 209 or less
Air Canada
  • Air Canada
  • 1/11-1/11
  • 1 total stop
  • 7h 03m total
  • Illinois to Montreal
Search Deals
Air Canada
  • Air Canada
  • 19/10
  • Nonstop
  • 2h 15m total
  • Illinois to Montreal
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (C$ 105 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 August 2026
Search Deals
Price to beat on a round-trip flight from Illinois to Montreal Pierre Elliott Trudeau Intl.
Search Deals
Price to beat on a one-way flight from Illinois to Montreal Pierre Elliott Trudeau Intl.
Search Deals

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 2 August 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Wed 23/9

3:20 p.m.-9:12 p.m.

1 stop4h 52m

Montreal Pierre Elliott Trudeau Intl

Fri 25/9

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

1 stop6h 35m

C$ 441

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 22/8

11:22 a.m.-4:20 p.m.

1 stop3h 58m

Montreal Pierre Elliott Trudeau Intl

Sat 29/8

6:00 a.m.-1:50 p.m.

1 stop8h 50m

C$ 475

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Fri 2/10

3:20 p.m.-9:12 p.m.

1 stop4h 52m

Montreal Pierre Elliott Trudeau Intl

Mon 5/10

6:30 a.m.-11:00 a.m.

1 stop5h 30m

C$ 488

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Wed 16/9

3:20 p.m.-9:12 p.m.

1 stop4h 52m

Montreal Pierre Elliott Trudeau Intl

Wed 23/9

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

1 stop6h 35m

C$ 489
Quickest round-trip

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 26/8

2:01 p.m.-5:30 p.m.

Nonstop2h 29m

Montreal Pierre Elliott Trudeau Intl

Tue 1/9

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

Nonstop2h 36m

C$ 500

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Fri 16/10

2:01 p.m.-5:30 p.m.

Nonstop2h 29m

Montreal Pierre Elliott Trudeau Intl

Mon 19/10

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

Nonstop2h 42m

C$ 502

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 25/11

5:54 p.m.-9:17 p.m.

Nonstop2h 23m

Montreal Pierre Elliott Trudeau Intl

Sun 29/11

4:30 p.m.-8:21 p.m.

1 stop4h 51m

C$ 504

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Wed 21/10

1:27 p.m.-11:25 p.m.

1 stop8h 58m

Montreal Pierre Elliott Trudeau Intl

Sat 24/10

6:00 a.m.-12:47 p.m.

1 stop7h 47m

C$ 509

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Thu 29/10

12:27 p.m.-11:22 p.m.

1 stop9h 55m

Montreal Pierre Elliott Trudeau Intl

Tue 3/11

7:00 a.m.-11:47 a.m.

1 stop5h 47m

C$ 511

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Wed 28/10

1:27 p.m.-11:25 p.m.

1 stop8h 58m

Montreal Pierre Elliott Trudeau Intl

Thu 5/11

6:00 a.m.-12:47 p.m.

1 stop7h 47m

C$ 511

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 54 resultsSorted by cheapest first
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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, February is the cheapest month in which you can book a flight from Illinois to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 373). Flying from Illinois to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of C$ 691). 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 2 August 2026.

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 2 August 2026.

The most flights from USIL to YUL are scheduled on a Monday (31 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (22 on average).

How much does it cost to fly round-trip from Illinois to Montreal Pierre Elliott Trudeau Intl Airport?

Airfare is below average for this route at the moment.
Illinois to Montreal Pierre Elliott Trudeau Intl Airport flights typically cost between C$ 441 and C$ 616 in November.
The cheapest round-trip price found within the last 5 days was C$ 345 on Air Canada (1 Nov-1 Nov).

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

To ensure you get the cheapest price possible for a flight from Illinois to Montreal Pierre Elliott Trudeau Intl Airport, you should look to book at least 44 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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 29m. Fly via Porter Airlines, Delta, or United 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 United Airlines, which is currently one of the cheapest options available, starting at C$ 104. Air Canada flights start at C$ 124 while deals on American Airlines start at C$ 257 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: Finnair (95%), American Airlines (90%), Envoy Air (90%).

  • 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$ 154. While the most popular route (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl) can be booked for C$ 427 on average, our data indicates C$ 354 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, February is the cheapest month in which you can book a flight from Illinois to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 373). Flying from Illinois to Montreal Pierre Elliott Trudeau Intl Airport in January is currently the most expensive (average of C$ 691). 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
Dorval
Trois-Rivières
Laval
Brossard
Cornwall
Longueuil
Sherbrooke
Montebello
Boucherville
Magog
Bromont
Saint-Jean-sur-Richelieu
Drummondville
North Hatley
Saint-Sauveur
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 2 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 237AverageC$ 491FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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

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Why should you use Cheapflights to find cheap flight tickets from Illinois to Pierre Elliott Trudeau Intl?

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

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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