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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport from C$ 220

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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
YUL — ORD
31 Mar — 7 Apr1
1 adult

Cheapflights Tip: The best prices from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl are usually found in May or September, booked 36 days in advance, depart on a Thursday or Friday and return on a Sunday

Cheap 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 26 March 2025.

Round-trip from

C$ 340

One-way from

C$ 220

Popular in

January

Cheapest in

May

Average price

C$ 654

Good round-trip deal

C$ 540 or less

Good one-way deal

C$ 318 or less
Air Canada
  • Air Canada
  • 10/5-17/5
  • 1 total stop
  • 7h 29m total
  • Montreal to Chicago
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Air Canada
  • Air Canada
  • 14/5
  • 1 total stop
  • 4h 48m total
  • Montreal to Chicago
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Highest demand for flights based on searches. 7% potential increase in price (C$ 68 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease (C$ 25 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl.
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Find 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 26 March 2025.

Sat 10/51:10 p.m.YUL - ORD
1 stop5h 14mAir Canada
Sat 17/58:40 a.m.ORD - YUL
Nonstop2h 15mAir Canada
Deal found 25/3C$ 340
Sat 19/46:20 p.m.YUL - ORD
Nonstop2h 40mUnited Airlines
Sun 20/47:20 a.m.ORD - YUL
Nonstop2h 16mUnited Airlines
Deal found 25/3C$ 368
Thu 29/51:00 p.m.YUL - ORD
1 stop6h 53mMultiple Airlines
Sat 31/56:00 a.m.ORD - YUL
1 stop9h 58mMultiple Airlines
Deal found 25/3C$ 390
Sat 19/47:10 a.m.YUL - ORD
1 stop6h 29mDelta
Sun 20/46:45 a.m.ORD - YUL
1 stop4h 13mDelta
Deal found 25/3C$ 408
Fri 25/412:30 p.m.YUL - ORD
Nonstop2h 35mAmerican Airlines
Fri 2/58:30 p.m.ORD - YUL
1 stop12h 20mAmerican Airlines
Deal found 26/3C$ 410
Thu 3/76:45 p.m.YUL - ORD
1 stop20h 45mWestJet
Sat 23/85:20 p.m.ORD - YUL
1 stop4h 58mWestJet
Deal found 25/3C$ 432

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 26 March 2025.
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

Sat 10/5

1:10 p.m.-5:24 p.m.

1 stop5h 14m

Chicago O'Hare Intl

Sat 17/5

8:40 a.m.-11:55 a.m.

Nonstop2h 15m

C$ 340

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 19/4

6:20 p.m.-8:00 p.m.

Nonstop2h 40m

Chicago O'Hare Intl

Sun 20/4

7:20 a.m.-10:36 a.m.

Nonstop2h 16m

C$ 368

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 25/4

12:55 p.m.-10:47 p.m.

1 stop10h 52m

Chicago O'Hare Intl

Fri 2/5

8:30 p.m.-9:50 a.m.

1 stop12h 20m

C$ 386

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 29/5

1:00 p.m.-6:53 p.m.

1 stop6h 53m

Chicago O'Hare Intl

Sat 31/5

6:00 a.m.-4:58 p.m.

1 stop9h 58m

C$ 390

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 19/4

7:10 a.m.-12:39 p.m.

1 stop6h 29m

Chicago O'Hare Intl

Sun 20/4

6:45 a.m.-11:58 a.m.

1 stop4h 13m

C$ 408

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 3/7

6:45 p.m.-2:30 p.m.

1 stop20h 45m

Chicago O'Hare Intl

Sat 23/8

5:20 p.m.-11:18 p.m.

1 stop4h 58m

C$ 432

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 19/4

12:30 p.m.-2:05 p.m.

Nonstop2h 35m

Chicago O'Hare Intl

Sun 20/4

8:25 a.m.-11:44 a.m.

Nonstop2h 19m

C$ 471

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 14/5

8:15 a.m.-12:03 p.m.

1 stop4h 48m

C$ 220

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 29/5

9:45 a.m.-11:24 a.m.

Nonstop2h 39m

C$ 230

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sun 25/5

6:00 a.m.-12:41 p.m.

1 stop7h 41m

C$ 237

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/3

Showing 1-10 of 13 results
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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
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 21 March 2025.

Booking 36 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, January 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$ 261). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 355). 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 26 March 2025.

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 12% 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 23 March 2025.

Travelers seeking maximum savings on their Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport flight should consider departing on Sunday 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.

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 mm per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 26 March 2025.
See what other customers who have flown with Delta, United Airlines and American Airlines from Montreal to Chicago have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,891 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,891 reviews
Delta
8.0
Very good
7,891 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,608 reviews
Delta
8.0
Very good
7,891 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,891 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
WestJet
7.2
Good
2,785 reviews
Delta
8.0
Very good
7,891 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air Canada
7.0
Good
8,967 reviews
Delta
8.0
Very good
7,891 reviews
Check prices

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.3

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • 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$ 340, Air Canada will fly you from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport and back. In addition to Air Canada, 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$ 372 and C$ 386, respectively. Air Canada is priced at 41% 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$ 220. United Airlines flights start at C$ 230 while deals on Delta start at C$ 237 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 Emirates (100%), ANA (89%) and Avianca (87%).

  • 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$ 2,642, our data indicates the cheapest price to be C$ 228. The most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), is priced around C$ 332.

  • 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, January 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$ 261). Flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport in March is currently the most expensive (average of C$ 355). 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
Elk Grove Village
Evanston
Downers Grove
Skokie
Naperville
Bolingbrook
Romeoville

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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.
Pierre Elliott Trudeau Intl to Midway flights

Top 6 airlines flying from Pierre Elliott Trudeau Intl to O'Hare Intl

Discover the top 6 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 26 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 345AverageC$ 502FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 360AverageC$ 500FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 368AverageC$ 590FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
DeltaCheapestC$ 370AverageC$ 492FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
American AirlinesCheapestC$ 393AverageC$ 519FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 456AverageC$ 619FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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

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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.

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