Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport from C$ 243

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 7/7. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — ORD
21 Jul — 28 Jul1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl are usually found in April or January, booked 83 days in advance, depart on a Thursday or Friday and return on a Friday

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

Enter your travel dates to find the best prices.

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 21 June 2026.

Tue 21/74:30 p.m.
YUL
-
ORD
1 stop4h 59m
Air Canada
Sat 25/77:25 a.m.
ORD
-
YUL
1 stop5h 22m
Air Canada
Deal found 18/6C$ 412
Sun 23/86:30 p.m.
YUL
-
ORD
Nonstop2h 35m
Air Canada
Wed 26/87:25 a.m.
ORD
-
YUL
1 stop5h 22m
Air Canada
Deal found 19/6C$ 413
Fri 10/76:30 p.m.
YUL
-
ORD
Nonstop2h 35m
Air Canada
Sun 12/78:45 a.m.
ORD
-
YUL
Nonstop2h 15m
Air Canada
Deal found 20/6C$ 415
Sat 10/109:45 a.m.
YUL
-
ORD
Nonstop2h 36m
United Airlines
Wed 14/102:01 p.m.
ORD
-
YUL
Nonstop2h 29m
United Airlines
Deal found 16/6C$ 416
Mon 17/88:40 a.m.
YUL
-
ORD
Nonstop2h 36m
Air Canada
Thu 20/87:25 a.m.
ORD
-
YUL
1 stop5h 22m
Air Canada
Deal found 20/6C$ 417
Sat 4/78:55 a.m.
YUL
-
ORD
1 stop5h 24m
Air Canada
Sun 5/78:45 a.m.
ORD
-
YUL
Nonstop2h 15m
Air Canada
Deal found 20/6C$ 419
Thu 3/96:00 a.m.
YUL
-
ORD
1 stop5h 42m
Delta
Mon 7/98:48 a.m.
ORD
-
YUL
1 stop6h 32m
Delta
Deal found 16/6C$ 420
Sat 11/78:55 a.m.
YUL
-
ORD
1 stop5h 24m
Air Canada
Mon 20/72:00 p.m.
ORD
-
YUL
1 stop4h 47m
Air Canada
Deal found 17/6C$ 422
Mon 14/96:30 a.m.
YUL
-
ORD
1 stop5h 30m
Porter Airlines
Mon 21/93:20 p.m.
ORD
-
YUL
1 stop3h 50m
Porter Airlines
Deal found 18/6C$ 423
Mon 10/89:10 a.m.
YUL
-
ORD
1 stop5h 12m
Air Canada
Sat 15/88:45 a.m.
ORD
-
YUL
Nonstop2h 15m
Air Canada
Deal found 17/6C$ 425
Tue 25/85:34 p.m.
YUL
-
ORD
Nonstop2h 45m
Porter Airlines
Wed 2/91:27 p.m.
ORD
-
YUL
Nonstop2h 26m
Porter Airlines
Deal found 18/6C$ 426
Wed 1/76:00 a.m.
YUL
-
ORD
1 stop8h 00m
Delta
Thu 9/75:18 p.m.
ORD
-
YUL
1 stop5h 07m
Delta
Deal found 16/6C$ 427

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 21 June 2026.

Round-trip from

C$ 412

One-way from

C$ 243

Popular in

June

Cheapest in

April

Average price

C$ 671

Good round-trip deal

C$ 573 or less

Good one-way deal

C$ 395 or less
Air Canada
  • Air Canada
  • 21/7-25/7
  • 2 total stops
  • 10h 21m total
  • Montreal to Chicago
Search Deals
Air Canada
  • Air Canada
  • 7/7
  • 1 total stop
  • 4h 59m total
  • Montreal to Chicago
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 93 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals
Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl.
Search Deals

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 629,999 searches. Data last updated 21 June 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 5/8

9:45 a.m.-11:20 a.m.

Nonstop2h 35m

Chicago O'Hare Intl

Mon 10/8

2:08 p.m.-5:30 p.m.

Nonstop2h 22m

C$ 446

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 15/7

2:20 p.m.-11:31 p.m.

1 stop10h 11m

Chicago O'Hare Intl

Sat 18/7

6:00 a.m.-10:06 p.m.

1 stop15h 06m

C$ 456

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 10/10

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

Nonstop2h 36m

Chicago O'Hare Intl

Wed 14/10

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

Nonstop2h 29m

C$ 460

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

6:00 a.m.-1:08 p.m.

1 stop8h 08m

Chicago O'Hare Intl

Mon 24/8

1:59 p.m.-11:30 p.m.

1 stop8h 31m

C$ 463

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 3/7

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

1 stop8h 00m

Chicago O'Hare Intl

Tue 7/7

2:07 p.m.-11:25 p.m.

1 stop8h 18m

C$ 464

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 4/7

12:47 p.m.-8:31 p.m.

1 stop8h 44m

Chicago O'Hare Intl

Sat 5/9

2:30 p.m.-11:30 p.m.

1 stop8h 00m

C$ 466

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 8/9

6:10 a.m.-7:51 a.m.

Nonstop2h 41m

Chicago O'Hare Intl

Sun 13/9

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

Nonstop2h 29m

C$ 485

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 16/9

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

Nonstop2h 36m

Chicago O'Hare Intl

Mon 21/9

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

Nonstop2h 29m

C$ 485

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 7/9

6:10 a.m.-7:51 a.m.

Nonstop2h 41m

Chicago O'Hare Intl

Tue 15/9

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

Nonstop2h 29m

C$ 485

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 7/9

6:10 a.m.-7:51 a.m.

Nonstop2h 41m

Chicago O'Hare Intl

Mon 14/9

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

Nonstop2h 29m

C$ 485

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/6

Showing 1-10 of 22 resultsSorted by cheapest first
1
2
3

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?

Booking 82 days in advance of your planned departure date is, on average, the best time to get cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare 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 Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport?

Currently, April 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 C$ 375). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in June is currently the most expensive (average of C$ 671). 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 21 June 2026.

It’s optimal to fly from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in the evening. By choosing this option you can save up to 66% on the cost of your flight, compared to a flight at noon.

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

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 21 June 2026.
Check out reviews from past customers who have flown with Porter Airlines,United Airlines, andAmerican Airlines from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
438 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.6

Overall

8.0

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Porter Airlines
8.0
Very good
438 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.6

Overall

8.0

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
United Airlines
7.4
Good
9,868 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.6

Overall

8.0

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
American Airlines
7.1
Good
11,723 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.6

Overall

8.0

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.
Air Canada
7.1
Good
11,231 reviews
Porter Airlines
8.0
Very good
438 reviews
Check prices

Comfort

8.0

Boarding

8.2

Food

7.6

Crew

8.6

Overall

8.0

Entertainment

6.9

Reviews

1 / 20
6.0
Good

Justin,May 2026

YYZ - MCO

Staff very nice. Seats were uncomfortable. Complimentary snacks leave much to be desired.

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?

    A quick flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport can take about 2h 35m. United Airlines provides one of the quickest options available for as low as C$ 446. There are 1199 km between Montreal Pierre Elliott Trudeau Intl Airport and Chicago O'Hare Intl Airport. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Currently priced at C$ 182, American Airlines will fly you from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Air Canada - these airlines can fly you to your destination from C$ 264 and C$ 266, respectively. American Airlines is priced at 64% lower than the current average price of a flight leaving 3 months from now.

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

    The top 3 most reliable airlines when flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport are ANA (93%), Qantas Airways (90%) and Emirates (90%).

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

    Looking for the cheapest flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport? While on average our users pay C$ 1,260, our data indicates the cheapest price to be C$ 266. The most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), is priced around C$ 334.

  • 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, April 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 C$ 375). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in June is currently the most expensive (average of C$ 671). 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 Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Northbrook
Evanston
Des Plaines
Skokie
Downers Grove
Elk Grove Village
Racine
Bolingbrook
Naperville
Romeoville
Schaumburg

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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.
Pierre Elliott Trudeau Intl to Midway flights

Top 4 airlines flying from Pierre Elliott Trudeau Intl to O'Hare Intl

Discover the top 4 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 629,999 searches. Data last updated 21 June 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 182AverageC$ 380FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapestC$ 264AverageC$ 469FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 267AverageC$ 568FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 302AverageC$ 475FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Pierre Elliott Trudeau Intl to O'Hare Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Pierre Elliott Trudeau Intl to O'Hare Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from Pierre Elliott Trudeau Intl to O'Hare Intl, users can toggle the no change fees filter when performing a flight search.

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

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

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.