Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport from C$ 255

YUL — ORD
4 Dec — 11 Dec1
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 February, booked 47 days in advance, depart on a Thursday or Friday and return on a Tuesday

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

Thu 26/116:10 p.m. -
Nonstop2h 42m
Sun 29/117:05 a.m. -
Nonstop2h 12m
Deal found 3/11C$ 417
Fri 20/111:10 p.m. -
Nonstop2h 50m
Mon 23/111:55 p.m. -
1 stop6h 50m
Deal found 31/10C$ 432
Sun 22/117:10 a.m. -
1 stop7h 03m
Fri 27/117:05 a.m. -
Nonstop2h 12m
Deal found 1/11C$ 434
Fri 20/111:10 p.m. -
Nonstop2h 50m
Fri 27/111:55 p.m. -
1 stop6h 50m
Deal found 1/11C$ 441
Fri 4/124:45 p.m. -
Nonstop3h 01m
Sun 6/1210:37 a.m. -
Nonstop2h 23m
Deal found 30/10C$ 443
Wed 25/116:00 a.m. -
Nonstop3h 00m
Sun 29/117:05 a.m. -
Nonstop2h 12m
Deal found 30/10C$ 449
Thu 3/123:10 p.m. -
1 stop5h 48m
Sun 6/127:05 a.m. -
Nonstop2h 12m
Deal found 2/11C$ 452

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

Round-trip from

C$ 400

One-way from

C$ 255

Popular in

June

Cheapest in

April

Average price

C$ 607

Good round-trip deal

C$ 681 or less

Good one-way deal

C$ 447 or less
Porter Airlines
  • Porter Airlines
  • 18/2-22/2
  • 2 total stops
  • 14h 32m total
  • Montreal to Chicago
American Airlines
  • American Airlines
  • 21/11-31/12
  • Nonstop
  • 3h 05m total
  • Montreal to Chicago
Highest demand for flights based on searches. 1% potential increase in price (C$ 11 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).
Average for round-trip flights in November 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

 
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

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 20/11

6:00 a.m.-1:59 p.m.

1 stop8h 59m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 277

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 17/11

12:50 p.m.-4:18 p.m.

1 stop4h 28m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 277

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 15/12

7:10 a.m.-4:43 p.m.

1 stop10h 33m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 277

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Sun 15/11

7:10 a.m.-4:41 p.m.

1 stop10h 31m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 277

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 15/12

7:00 a.m.-8:06 p.m.

1 stop14h 06m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 281

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 17/12

6:00 a.m.-1:56 p.m.

1 stop8h 56m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 282

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 4/12

6:00 a.m.-1:56 p.m.

1 stop8h 56m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 282
Quickest round-trip

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 30/1

9:25 a.m.-11:07 a.m.

Nonstop2h 42m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 296

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 9/1

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

Nonstop3h 00m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 306

MontrealChicago

YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl

YULORD

Montreal Pierre Elliott Trudeau Intl

Sun 10/1

6:00 a.m.-12:56 p.m.

1 stop7h 56m

Chicago O'Hare Intl

Wed 31/12

12:00 a.m.-1:00 a.m.

Nonstop0h 00m

C$ 317

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/11

Showing 1-10 of 23 resultsSorted by cheapest first
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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

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 46 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$ 359). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in June is currently the most expensive (average of C$ 652). 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?

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 58% 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?

Airfare is below average for this route at the moment.

Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport flights typically cost between C$ 470 and C$ 769 in February.
The cheapest round-trip price found within the last 5 days was C$ 400 on Porter Airlines (18 Feb-22 Feb).

Reviews of airlines servicing O'Hare Intl

Check out reviews from past customers who have flown with Porter Airlines,United Airlines, andAir Canada 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.

Food

7.6

Overall

8.0

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Food

7.6

Overall

8.0

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Food

7.6

Overall

8.0

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Food

7.6

Overall

8.0

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Food

7.6

Overall

8.0

Comfort

8.0

Entertainment

6.9

Boarding

8.2

Crew

8.6

Reviews

1 / 20
8.0
Excellent

D,Sep 2026

YHM - YVR

The flight including check-in, checked baggage, boarding, flight and timing were great. My checked bag was delayed two days which was concerning. They did deliver it to my door though which was great.

Related info for your journey

  • 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 3h 01m. Delta provides one of the quickest options available for as low as C$ 474. 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$ 229, Porter Airlines will fly you from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport and back. In addition to Porter Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from C$ 268 and C$ 295, respectively. Porter Airlines is priced at 56% lower than the current average price of a flight leaving 3 months from now.

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

    To fly one-way, consider booking your trip with Air Canada, which is currently one of the cheapest options available, starting at C$ 234. United Airlines flights start at C$ 260 while deals on American Airlines start at C$ 266 one-way.

  • 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 (83%), Qatar Airways (82%) and Qantas Airways (82%).

  • 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$ 1,306, our data indicates the cheapest price to be C$ 298. The most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), is priced around C$ 413.

  • 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$ 359). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in June is currently the most expensive (average of C$ 652). 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
Schaumburg
Northbrook
Des Plaines
Racine
Rockford
Naperville
Elk Grove Village
Skokie

Browse thousands of different options on Cheapflights for your next trip

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

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

AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 229AverageC$ 409FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 268AverageC$ 555FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
American AirlinesCheapestC$ 295AverageC$ 488FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 323AverageC$ 609FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

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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.

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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?

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