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Cheap flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport from C$ 188

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 27/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YUL
26 Nov — 3 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Chicago O'Hare Intl to Montreal Pierre Elliott Trudeau Intl are usually found in September or January, booked 45 days in advance, depart on a Wednesday or Monday and return on a Thursday

Cheap flight deals from O'Hare Intl to Pierre Elliott Trudeau Intl

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) 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 27 October 2025.

Round-trip from

C$ 295

One-way from

C$ 188

Popular in

December

Cheapest in

September

Average price

C$ 508

Good round-trip deal

C$ 542 or less

Good one-way deal

C$ 246 or less
United Airlines
  • United Airlines
  • 12/1-12/1
  • 1 total stop
  • 10h 42m total
  • Chicago to Montreal
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27/11
  • 27/11
  • 2 total stops
  • 31h 10m total
  • Chicago to Montreal
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Highest demand for flights based on searches. 4% potential increase in price (C$ 35 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 28 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Chicago O'Hare Intl to Montreal Pierre Elliott Trudeau Intl.
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Price to beat on a one-way flight from Chicago O'Hare Intl to Montreal Pierre Elliott Trudeau Intl.
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Find flight deals from O'Hare Intl to Pierre Elliott Trudeau Intl

Enter your travel dates to find the best prices.

Cheapest flights from O'Hare Intl to Pierre Elliott Trudeau Intl
Explore the most affordable flight options available from O'Hare Intl to Pierre Elliott Trudeau Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 October 2025.

Mon 15/1212:09 p.m.ORD - YUL
2 stops30h 35mMultiple Airlines
Thu 15/18:00 a.m.YUL - ORD
1 stop12h 29mMultiple Airlines
Deal found 25/10C$ 383
Fri 12/1210:38 a.m.ORD - YUL
Nonstop2h 22mUnited Airlines
Sun 11/19:15 a.m.YUL - ORD
1 stop15h 24mUnited Airlines
Deal found 25/10C$ 385
Thu 4/126:15 a.m.ORD - YUL
1 stop9h 08mMultiple Airlines
Mon 8/128:00 a.m.YUL - ORD
1 stop28h 13mMultiple Airlines
Deal found 24/10C$ 399
Mon 15/1210:38 a.m.ORD - YUL
Nonstop2h 22mUnited Airlines
Tue 13/14:45 p.m.YUL - ORD
Nonstop3h 06mUnited Airlines
Deal found 25/10C$ 403
Sun 14/127:10 a.m.ORD - YUL
1 stop5h 18mUnited Airlines
Sat 17/16:00 a.m.YUL - ORD
Nonstop3h 05mUnited Airlines
Deal found 25/10C$ 417
Sun 14/127:20 a.m.ORD - YUL
2 stops11h 24mMultiple Airlines
Tue 20/18:00 a.m.YUL - ORD
1 stop26h 23mMultiple Airlines
Deal found 25/10C$ 418
Sat 20/128:15 p.m.ORD - YUL
1 stop4h 38mAir Canada
Sat 17/11:10 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Deal found 26/10C$ 420
Sat 6/127:20 a.m.ORD - YUL
2 stops11h 24mMultiple Airlines
Mon 8/128:00 a.m.YUL - ORD
1 stop28h 13mMultiple Airlines
Deal found 26/10C$ 421
Sat 29/116:48 a.m.ORD - YUL
2 stops11h 51mMultiple Airlines
Mon 8/128:00 a.m.YUL - ORD
1 stop28h 13mMultiple Airlines
Deal found 25/10C$ 423
Wed 31/1210:35 a.m.ORD - YUL
Nonstop2h 25mUnited Airlines
Tue 6/13:00 p.m.YUL - ORD
1 stop6h 13mUnited Airlines
Deal found 26/10C$ 425

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl 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 27 October 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

O'Hare Intl

Fly to

Pierre Elliott Trudeau Intl

Route

Depart

Return

Price

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 12/2

5:50 a.m.-5:04 p.m.

1 stop10h 14m

Montreal Pierre Elliott Trudeau Intl

Sun 15/2

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

1 stop4h 35m

C$ 330

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 14/2

1:35 p.m.-11:12 p.m.

1 stop8h 37m

Montreal Pierre Elliott Trudeau Intl

Sat 21/2

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

1 stop4h 35m

C$ 330

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 28/3

9:00 a.m.-5:55 p.m.

1 stop7h 55m

Montreal Pierre Elliott Trudeau Intl

Sat 4/4

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

Nonstop2h 32m

C$ 341

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Fri 20/2

8:50 a.m.-7:48 p.m.

1 stop9h 58m

Montreal Pierre Elliott Trudeau Intl

Mon 23/2

6:15 p.m.-8:00 p.m.

Nonstop2h 45m

C$ 341

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Mon 12/1

12:50 p.m.-4:01 p.m.

Nonstop2h 11m

Montreal Pierre Elliott Trudeau Intl

Mon 19/1

4:45 p.m.-6:51 p.m.

Nonstop3h 06m

C$ 343

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 26/2

7:15 a.m.-10:20 a.m.

Nonstop2h 05m

Montreal Pierre Elliott Trudeau Intl

Sun 1/3

8:30 a.m.-9:35 p.m.

1 stop14h 05m

C$ 350

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 21/2

12:50 p.m.-4:01 p.m.

Nonstop2h 11m

Montreal Pierre Elliott Trudeau Intl

Sat 28/2

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

1 stop12h 50m

C$ 350

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Fri 6/3

9:05 p.m.-11:38 a.m.

1 stop13h 33m

Montreal Pierre Elliott Trudeau Intl

Sun 8/3

8:30 a.m.-1:22 p.m.

1 stop5h 52m

C$ 364

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Mon 15/12

5:55 p.m.-9:17 p.m.

Nonstop2h 22m

Montreal Pierre Elliott Trudeau Intl

Thu 8/1

4:45 p.m.-6:51 p.m.

Nonstop3h 06m

C$ 403

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Mon 15/12

5:55 p.m.-9:17 p.m.

Nonstop2h 22m

Montreal Pierre Elliott Trudeau Intl

Wed 14/1

4:45 p.m.-6:51 p.m.

Nonstop3h 06m

C$ 403

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/10

Showing 1-10 of 19 results
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Best time to book a flight from O'Hare Intl to Pierre Elliott Trudeau Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to Pierre Elliott Trudeau Intl. Price data was last updated on 24 October 2025.

Booking 45 days in advance of your planned departure date is, on average, the best time to get cheap flights from Chicago O'Hare Intl Airport 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 O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 183). Flying from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport in December is currently the most expensive (average of C$ 411). 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 ORD to YUL?

Find hourly flight availability from O'Hare Intl 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 27 October 2025.

When flying from Chicago O'Hare Intl Airport 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.

Reviews of airlines servicing Pierre Elliott Trudeau Intl

Get insights into the airlines that provide service to Pierre Elliott Trudeau Intl. 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 Pierre Elliott Trudeau Intl. Reviews last updated 27 October 2025.
Read through reviews of airlines operating flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport, such as Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,365 reviews
Check prices

Crew

7.8

Overall

7.1

Boarding

7.3

Entertainment

6.8

Comfort

7.1

Food

6.3

Reviews

1 / 20
2.0
Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given
Air Canada
7.1
Good
10,365 reviews
Air Canada
7.1
Good
10,365 reviews
Check prices

Crew

7.8

Overall

7.1

Boarding

7.3

Entertainment

6.8

Comfort

7.1

Food

6.3

Reviews

1 / 20
2.0
Mediocre

Shawna,Sep 2025

DCA - YYZ

Business class cabin was *freezing*. Landing was so hard it injured my back - no apology or explanation given

Related info for your journey

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

    There are many flights that can get you from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport in 7h 55m. Fly via Delta or United Airlines to get the fastest option. Airlines will cover a distance of 1199 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    According to our current data, Air Canada (C$ 344), offers the cheapest pricing from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport. This flight start at 39% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

    Before booking your flight to Montreal Pierre Elliott Trudeau Intl Airport from Chicago O'Hare Intl Airport, check out the most reliable airlines to get you to your destination on time: Alaska Airlines (88%), Republic Airways (88%), American Airlines( 85%).

  • What are the cheapest flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

    Looking for the cheapest flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport? While on average our users pay C$ 554, our data indicates the cheapest price to be C$ 197. The most popular route (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl), is priced around C$ 236.

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

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

  • How can I find direct flights from O'Hare Intl 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 O'Hare Intl to Pierre Elliott Trudeau Intl.

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

    Yes. Cheapflights offers flight deals from O'Hare Intl 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 O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

    Currently, November is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport (average of C$ 183). Flying from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport in December is currently the most expensive (average of C$ 411). 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
Cornwall
Sherbrooke
Brossard
Longueuil
Montebello
Trois-Rivières
Drummondville
Saint-Jean-sur-Richelieu
Boucherville
Bromont
North Hatley
Louiseville

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Alternative routes for O'Hare Intl to Pierre Elliott Trudeau Intl

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

Top airline flying from O'Hare Intl to Pierre Elliott Trudeau Intl

Discover the top airline that operate flights from O'Hare Intl 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 27 October 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 344AverageC$ 667FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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How does Cheapflights help users find flights from O'Hare Intl to Pierre Elliott Trudeau Intl?

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

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Can Cheapflights find flights from O'Hare Intl to Pierre Elliott Trudeau Intl with no change fees?

Certainly. Search results for flights to Pierre Elliott Trudeau Intl from O'Hare Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights offers price alerts on O'Hare Intl to Pierre Elliott Trudeau Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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