O'Hare Intl

$100+ Cheap flights from Pierre Elliott Trudeau Intl (YUL) to O'Hare Intl (ORD)

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 4/23. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — ORD
Mar 6 — Mar 131
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Find cheap flights from Pierre Elliott Trudeau Intl to O'Hare Intl with Cheapflights

1. Tell us where you want to go

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Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl are usually found in April or September, booked 65 days in advance, depart on a Friday or Thursday and return on a Thursday

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

Cheapest flights from Pierre Elliott Trudeau Intl to O'Hare Intl
Explore the most affordable flight options available from Pierre Elliott Trudeau Intl to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 4, 2026.

This Air Canada deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:25 pm
YUL
-
ORD
Nonstop2h 45m
Air Canada
Wed 2/2512:50 pm
ORD
-
YUL
Nonstop2h 11m
Air Canada
Deal found 2/2$177
This Air Canada deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:25 pm
YUL
-
ORD
Nonstop2h 45m
Air Canada
Wed 3/43:35 pm
ORD
-
YUL
Nonstop2h 05m
Air Canada
Deal found 2/2$178
This United Airlines deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/266:00 am
YUL
-
ORD
Nonstop3h 00m
United Airlines
Mon 3/301:00 pm
ORD
-
YUL
1 stop10h 13m
United Airlines
Deal found 2/4$186
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/104:45 pm
YUL
-
ORD
Nonstop3h 00m
United Airlines
Tue 3/316:01 pm
ORD
-
YUL
1 stop5h 12m
United Airlines
Deal found 2/3$187
This American Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/227:45 am
YUL
-
ORD
1 stop16h 49m
American Airlines
Sat 4/258:18 am
ORD
-
YUL
Nonstop2h 26m
American Airlines
Deal found 2/3$192
This Air Canada deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/169:15 am
YUL
-
ORD
Nonstop2h 38m
Air Canada
Thu 4/238:40 am
ORD
-
YUL
Nonstop2h 11m
Air Canada
Deal found 2/2$206
This Air Canada deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/71:20 pm
YUL
-
ORD
Nonstop2h 35m
Air Canada
Sat 4/113:45 pm
ORD
-
YUL
Nonstop2h 10m
Air Canada
Deal found 2/3$207
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:00 pm
YUL
-
ORD
1 stop6h 56m
Delta
Wed 2/255:25 am
ORD
-
YUL
1 stop10h 28m
Delta
Deal found 2/2$209
This United Airlines deal was found by Cheapflights users on 2/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:35 pm
YUL
-
ORD
1 stop6h 08m
United Airlines
Tue 4/71:00 pm
ORD
-
YUL
1 stop5h 45m
United Airlines
Deal found 2/3$212
This Delta deal was found by Cheapflights users on 2/2. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:00 am
YUL
-
ORD
1 stop10h 42m
Delta
Fri 4/247:00 am
ORD
-
YUL
1 stop3h 59m
Delta
Deal found 2/2$217
This Delta deal was found by Cheapflights users on 2/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/86:45 pm
YUL
-
ORD
1 stop6h 14m
Delta
Sun 5/107:00 am
ORD
-
YUL
1 stop8h 20m
Delta
Deal found 2/4$218

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

Discover tips and strategies to find the most affordable flight options for your journey from Pierre Elliott Trudeau Intl (YUL) to O'Hare Intl (ORD). 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 February 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(Air Canada)

One-way from

$100
(SmartFares)

Popular in

July

Cheapest in

April

Average price

$352

Good round-trip deal

$312 or less

Good one-way deal

$220 or less
Provider with most accurate pricing for Montreal Pierre Elliott Trudeau Intl-Chicago O'Hare Intl flight deals.
Provider most trusted by Cheapflights users for Montreal Pierre Elliott Trudeau Intl-Chicago O'Hare Intl flights.
From Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl
One-way flight from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl
Highest demand for flights based on searches. 1% potential increase in price ($5 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Average for round-trip flights in February 2026
Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl.
Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl.

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pierre Elliott Trudeau Intl to O'Hare 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 2,558,603 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport that are best for you.

Fly from

Pierre Elliott Trudeau Intl

Fly to

O'Hare Intl

Route

Depart

Return

Price

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 3/10

4:45 pm-6:45 pm

Nonstop3h 00m

Chicago O'Hare Intl

Tue 3/31

6:01 pm-12:13 am

1 stop5h 12m

$187

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 3/26

6:00 am-8:00 am

Nonstop3h 00m

Chicago O'Hare Intl

Mon 3/30

3:36 pm-10:06 pm

1 stop5h 30m

$206

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 3/12

6:00 am-8:00 am

Nonstop3h 00m

Chicago O'Hare Intl

Sun 3/15

6:00 am-3:16 pm

1 stop8h 16m

$206

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 4/16

6:45 pm-11:59 pm

1 stop6h 14m

Chicago O'Hare Intl

Thu 4/23

8:15 am-5:35 pm

1 stop8h 20m

$217

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 3/19

12:42 pm-6:49 pm

1 stop7h 07m

Chicago O'Hare Intl

Mon 3/23

9:50 am-3:53 pm

1 stop5h 03m

$217

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 4/15

12:55 pm-4:18 pm

1 stop4h 23m

Chicago O'Hare Intl

Wed 4/22

9:35 am-6:51 pm

1 stop8h 16m

$217

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 4/17

12:44 pm-6:48 pm

1 stop7h 04m

Chicago O'Hare Intl

Thu 4/23

1:36 pm-11:08 pm

1 stop8h 32m

$217

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 4/13

6:45 pm-11:59 pm

1 stop6h 14m

Chicago O'Hare Intl

Tue 4/21

5:04 pm-11:08 pm

1 stop5h 04m

$217

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 4/14

7:00 am-1:14 pm

1 stop7h 14m

Chicago O'Hare Intl

Tue 4/21

8:15 am-5:35 pm

1 stop8h 20m

$217

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 4/7

6:30 pm-8:05 pm

Nonstop2h 35m

$115

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

Showing 1-10 of 20 results
1
2

Compare providers for flights from Pierre Elliott Trudeau Intl to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Pierre Elliott Trudeau Intl to O'Hare Intl in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Montreal Pierre Elliott Trudeau Intl Airport-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Montreal Pierre Elliott Trudeau Intl Airport-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Montreal Pierre Elliott Trudeau Intl Airport-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Montreal Pierre Elliott Trudeau Intl Airport-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Pierre Elliott Trudeau Intl to O'Hare Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from Pierre Elliott Trudeau Intl to O'Hare Intl. Price data was last updated on January 30, 2026.

The best time to book flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, October is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport (average of $162). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $282). 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 YUL to ORD?

Find hourly flight availability from Pierre Elliott Trudeau Intl to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 4, 2026.

It’s optimal to fly from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in the afternoon. By choosing this option you can save up to 48% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Pierre Elliott Trudeau Intl to O'Hare Intl. Price data was last updated on January 31, 2026.

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport?

The best insider tips for Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport trip
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

John Walton

John Walton

Expert on YUL

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare 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 O'Hare Intl. Reviews last updated February 4, 2026.
Read through reviews of airlines operating flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport, such as United Airlines, American Airlines, and Air Canada. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
6.0
Good

Gerry,Jan 2026

YVR - DEN

Seats were uncomfortable. Second leg of my flight on United had much more comfortable seats

Related info for your journey

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

    Airlines like United Airlines and Delta fly from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in about 5h 37m. The time it takes to get you to your destination can typically vary by up to 37m. Airlines will cover a distance of 745 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport round-trip?

    According to our current data, Air Canada ($156), American Airlines ($189), and United Airlines ($267) offers the cheapest pricing from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport. Air Canada is currently priced 55% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport one-way?

    The cheapest airlines for a one-way flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport are Air Canada ($104), United Airlines ($148), and American Airlines ($149).

  • What are the most reliable airlines from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare 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 Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport on time: Avianca (80%), ANA (79%), Copa Airlines (73%).

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

    While on average a flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport is generally $638, our data shows the cheapest flight currently is $151. When looking at the most popular route, (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), you can expect to pay $177 for that flight.

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

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

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

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pierre Elliott Trudeau Intl to O'Hare Intl.

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

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

    Currently, October is the cheapest month in which you can book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport (average of $162). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in July is currently the most expensive (average of $282). 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

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Naperville
Gurnee
Elgin
Hoffman Estates
Beloit
Delavan
Oak Brook
Des Plaines
Downers Grove
Elk Grove Village
Skokie
Libertyville
Lake Geneva
Waukegan
Bridgeview
Kenosha
Warrenville
Aurora

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

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Pierre Elliott Trudeau Intl to O'Hare Intl

Discover the top 3 airlines that operate flights from Pierre Elliott Trudeau Intl to O'Hare 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 2,558,603 searches. Data last updated February 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$156Average$328FlexibilityNo cancel feeOn-time67%
American AirlinesCheapest$189Average$399FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$267Average$380FlexibilityNo cancel feeOn-time69%

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