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Cheap flights from Chicago O'Hare Intl Airport 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
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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

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 17 September 2025.

Round-trip from

C$ 384

One-way from

C$ 149

Popular in

December

Cheapest in

September

Average price

C$ 389

Good round-trip deal

C$ 222 or less

Good one-way deal

C$ 121 or less
Air Canada
  • Air Canada
  • 30/10-6/11
  • Nonstop
  • 4h 52m 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. 5% potential increase in price (C$ 45 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease (C$ 31 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 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

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 17 September 2025.

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
Sat 1/1112:50 p.m.ORD - YUL
Nonstop2h 07mAir Canada
Sat 8/116:15 p.m.YUL - ORD
Nonstop2h 45mAir Canada
Deal found 17/9C$ 387
Sat 1/117:15 a.m.ORD - YUL
Nonstop2h 05mAir Canada
Sun 2/119:25 a.m.YUL - ORD
Nonstop2h 53mAir Canada
Deal found 17/9C$ 396
Fri 17/107:11 a.m.ORD - YUL
Nonstop2h 29mUnited Airlines
Wed 22/106:15 a.m.YUL - ORD
Nonstop2h 46mUnited Airlines
Deal found 16/9C$ 402
Fri 17/108:25 p.m.ORD - YUL
1 stop4h 25mAir Canada
Wed 22/106:35 p.m.YUL - ORD
Nonstop2h 42mAir Canada
Deal found 16/9C$ 403
Thu 4/128:41 a.m.ORD - YUL
1 stop30h 47mMultiple Airlines
Mon 8/128:00 a.m.YUL - ORD
1 stop16h 42mMultiple Airlines
Deal found 16/9C$ 409

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 17 September 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

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

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Fri 10/10

2:08 p.m.-5:26 p.m.

Nonstop2h 18m

Montreal Pierre Elliott Trudeau Intl

Sun 12/10

6:15 a.m.-8:01 a.m.

Nonstop2h 46m

C$ 435

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

Fri 17/10

9:45 a.m.-11:23 a.m.

Nonstop2h 38m

C$ 435

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 23/10

1:26 p.m.-12:27 a.m.

2 stops10h 01m

Montreal Pierre Elliott Trudeau Intl

Tue 28/10

4:39 p.m.-8:23 p.m.

1 stop4h 44m

C$ 436

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 22/10

6:00 p.m.-9:29 p.m.

Nonstop2h 29m

Montreal Pierre Elliott Trudeau Intl

Sat 25/10

9:45 a.m.-11:23 a.m.

Nonstop2h 38m

C$ 436

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 23/10

2:08 p.m.-5:26 p.m.

Nonstop2h 18m

Montreal Pierre Elliott Trudeau Intl

Sat 25/10

6:15 a.m.-8:01 a.m.

Nonstop2h 46m

C$ 436

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 26/11

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

Nonstop2h 22m

Montreal Pierre Elliott Trudeau Intl

Wed 3/12

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

Nonstop3h 00m

C$ 436

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 8/10

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

Nonstop2h 29m

Montreal Pierre Elliott Trudeau Intl

Sun 12/10

6:15 a.m.-8:01 a.m.

Nonstop2h 46m

C$ 436

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 18/10

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

Nonstop2h 29m

Montreal Pierre Elliott Trudeau Intl

Thu 23/10

8:20 a.m.-9:51 a.m.

Nonstop2h 31m

C$ 443

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Fri 7/11

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

Nonstop2h 22m

Montreal Pierre Elliott Trudeau Intl

Mon 10/11

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

Nonstop2h 45m

C$ 443

Flights are sorted by cheapest round-trip flights first.

Deals found on 15/9

Showing 1-10 of 20 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 12 September 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, October 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$ 241). Flying from Chicago O'Hare Intl Airport 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 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 17 September 2025.

It’s typically best to fly out from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport at noon. Doing so could potentially save you 49% on the flight price compared to flying in the afternoon, which is usually more expensive.

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 17 September 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
10,000 reviews
Check prices

Boarding

7.3

Crew

7.8

Entertainment

6.8

Comfort

7.1

Overall

7.1

Food

6.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2024

TPA - YYZ

The pre boarding was a bit confusing but we got through it.
Air Canada
7.1
Good
10,000 reviews
Air Canada
7.1
Good
10,000 reviews
Check prices

Boarding

7.3

Crew

7.8

Entertainment

6.8

Comfort

7.1

Overall

7.1

Food

6.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2024

TPA - YYZ

The pre boarding was a bit confusing but we got through it.

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 2h 29m. Fly via United Airlines to get the fastest option. Airlines will cover a distance of 1199 km. Most flights are nonstop.

  • 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$ 338), 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: American Airlines (83%), Envoy Air (83%), Republic Airways( 83%).

  • 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$ 306, our data indicates the cheapest price to be C$ 81. The most popular route (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl), is priced around C$ 396.

  • 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, October 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$ 241). Flying from Chicago O'Hare Intl Airport 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 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 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 O'Hare Intl to Pierre Elliott Trudeau Intl?

When you search for this flight from O'Hare Intl to Pierre Elliott Trudeau Intl, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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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