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Cheap flights from Montreal to Chicago O'Hare Intl Airport from C$ 224

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 22/4. Fares are subject to change and may not be available on all flights or dates of travel.
YMQ — ORD
26 Mar — 2 Apr1
1 adult

Cheapflights Tip: The best prices from Montreal to Chicago O'Hare Intl are usually found in September or October, booked 83 days in advance, depart on a Thursday or Friday and return on a Sunday

Cheap flight deals from Montreal to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Montreal (YMQ) 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 March 2025.

Round-trip from

C$ 341

One-way from

C$ 224

Popular in

March

Cheapest in

September

Average price

C$ 766

Good round-trip deal

C$ 602 or less

Good one-way deal

C$ 302 or less
Air Canada
  • Air Canada
  • 19/4-20/4
  • 2 total stops
  • 13h 56m total
  • Montreal to Chicago
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Air Canada
  • Air Canada
  • 22/4
  • 1 total stop
  • 4h 40m total
  • Montreal to Chicago
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Highest demand for flights based on searches. 3% potential increase in price (C$ 28 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 24 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 (YMQ) to Chicago O'Hare Intl.
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Price to beat on a one-way flight from Montreal (YMQ) to Chicago O'Hare Intl.
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Find flight deals from Montreal to O'Hare Intl

Cheapest flights from Montreal to O'Hare Intl
Explore the most affordable flight options available from Montreal to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 March 2025.

Sat 19/41:15 p.m.YUL - ORD
1 stop7h 15mAir Canada
Sun 20/49:40 a.m.ORD - YUL
1 stop6h 41mAir Canada
Deal found 21/3C$ 341
Sat 12/46:15 a.m.YUL - ORD
Nonstop2h 47mMultiple Airlines
Wed 16/41:56 p.m.ORD - YUL
1 stop6h 45mMultiple Airlines
Deal found 20/3C$ 348
Wed 7/51:15 p.m.YUL - ORD
Nonstop2h 40mUnited Airlines
Wed 14/510:40 a.m.ORD - YUL
Nonstop2h 16mUnited Airlines
Deal found 21/3C$ 351
Fri 25/46:00 p.m.YUL - ORD
1 stop6h 59mDelta
Tue 29/42:45 p.m.ORD - YUL
1 stop5h 41mDelta
Deal found 21/3C$ 381
Wed 7/510:44 a.m.YUL - ORD
2 stops8h 15mAmerican Airlines
Wed 14/56:17 a.m.ORD - YUL
1 stop9h 38mAmerican Airlines
Deal found 20/3C$ 394
Thu 3/76:15 p.m.YUL - ORD
1 stop21h 05mWestJet
Sat 23/87:00 a.m.ORD - YUL
1 stop4h 15mWestJet
Deal found 20/3C$ 404

Cheapflights Fare Finder

Customize your flight search to find flights from Montreal 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 March 2025.
Use the filters below to find and compare flights from Montreal to Chicago O'Hare Intl Airport that are best for you.

Fly from

Montreal

Fly to

O'Hare Intl

Route

Depart

Return

Price

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 19/4

1:15 p.m.-7:30 p.m.

1 stop7h 15m

Chicago O'Hare Intl

Sun 20/4

9:40 a.m.-5:21 p.m.

1 stop6h 41m

C$ 341

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 12/4

6:15 a.m.-8:02 a.m.

Nonstop2h 47m

Chicago O'Hare Intl

Wed 16/4

1:56 p.m.-9:41 p.m.

1 stop6h 45m

C$ 348

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 7/5

1:15 p.m.-2:55 p.m.

Nonstop2h 40m

Chicago O'Hare Intl

Wed 14/5

10:40 a.m.-1:56 p.m.

Nonstop2h 16m

C$ 351

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 1/5

7:00 a.m.-4:22 p.m.

1 stop10h 22m

Chicago O'Hare Intl

Wed 7/5

7:10 a.m.-4:04 p.m.

1 stop7h 54m

C$ 369

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 7/5

10:44 a.m.-5:59 p.m.

2 stops8h 15m

Chicago O'Hare Intl

Wed 14/5

6:17 a.m.-4:55 p.m.

1 stop9h 38m

C$ 394

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 7/5

4:58 p.m.-8:21 p.m.

1 stop4h 23m

Chicago O'Hare Intl

Mon 12/5

9:00 a.m.-11:16 p.m.

1 stop13h 16m

C$ 442

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 22/4

11:15 a.m.-2:55 p.m.

1 stop4h 40m

C$ 224

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 22/4

6:00 p.m.-11:59 p.m.

1 stop6h 59m

C$ 225

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 12/4

6:15 a.m.-8:02 a.m.

Nonstop2h 47m

C$ 229

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 28/4

7:47 a.m.-10:47 p.m.

1 stop16h 00m

C$ 235

Flights are sorted by cheapest round-trip flights first.

Deals found on 20/3

Showing 1-10 of 12 results
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Best time to book a flight from Montreal to O'Hare Intl

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

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

Use this chart to determine the optimal time to book a round-trip flight from Montreal to O'Hare Intl. Price data was last updated on 14 March 2025.

The price you pay for your flight from Montreal to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 83 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, January is the cheapest month in which you can book a flight from Montreal to Chicago O'Hare Intl Airport (average of C$ 261). Flying from Montreal 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 YMQ to ORD?

Find hourly flight availability from Montreal 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 March 2025.

It’s typically best to fly out from Montreal to Chicago O'Hare Intl Airport in the afternoon. Doing so could potentially save you 12% on the flight price compared to flying in the evening, which is usually more expensive.

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

Use this chart to determine the cheapest time to fly round-trip from Montreal to O'Hare Intl. Price data was last updated on 16 March 2025.

Travelers seeking maximum savings on their Montreal 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.

Weekly flight availability from Montreal to Chicago O'Hare Intl Airport

Explore weekly flight availability from Montreal to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 21 March 2025.

The most flights from YMQ to ORD are scheduled on a Thursday (16 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (11 on average).

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 21 March 2025.
Read through reviews of airlines operating flights from Montreal to Chicago, such as Delta, United Airlines and American Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,895 reviews
Check prices

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

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
7,895 reviews
Delta
8.0
Very good
7,895 reviews
Check prices

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

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
8,605 reviews
Delta
8.0
Very good
7,895 reviews
Check prices

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

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
7,895 reviews
Check prices

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

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
2,783 reviews
Delta
8.0
Very good
7,895 reviews
Check prices

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

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
8,907 reviews
Delta
8.0
Very good
7,895 reviews
Check prices

Entertainment

7.9

Crew

8.5

Food

7.3

Comfort

8.0

Boarding

8.2

Overall

8.0

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 Montreal 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 to Chicago O'Hare Intl Airport round-trip?

    Currently priced at C$ 341, Air Canada will fly you from Montreal 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 Delta - these airlines can fly you to your destination from C$ 351 and C$ 369, respectively. These flights start at 42% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as C$ 224 on Air Canada. Other airlines that offer cheap prices include United Airlines from C$ 229 and WestJet from C$ 252 one-way.

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

    Consider Emirates (100%), ANA (89%) or Avianca (87%) when booking your flight. These represent the most reliable airlines when flying from Montreal to Chicago O'Hare Intl Airport.

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

    Looking for the cheapest flight from Montreal to Chicago O'Hare Intl Airport? While on average our users pay C$ 2,138, our data indicates the cheapest price to be C$ 224. The most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), is priced around C$ 324.

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

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

  • How can I find direct flights from Montreal 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 Montreal to O'Hare Intl.

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

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

    Currently, January is the cheapest month in which you can book a flight from Montreal to Chicago O'Hare Intl Airport (average of C$ 261). Flying from Montreal 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?

Book flights to Montreal if you plan to visit one of these locations
Elk Grove Village
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Downers Grove
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Bolingbrook
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Top 6 airlines flying from Montreal to O'Hare Intl

Discover the top 6 airlines that operate flights from Montreal 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 March 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapestC$ 346AverageC$ 503FlexibilityNo cancel feeOn-time52%
Search Porter Airlines flights
United AirlinesCheapestC$ 361AverageC$ 502FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
DeltaCheapestC$ 371AverageC$ 493FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Air CanadaCheapestC$ 378AverageC$ 597FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
American AirlinesCheapestC$ 394AverageC$ 542FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
WestJetCheapestC$ 458AverageC$ 621FlexibilityNo cancel feeOn-time60%
Search WestJet flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Montreal to O'Hare Intl?

Cheapflights helps you search for flights from Montreal to O'Hare Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights simply makes it quick and affordable to book flights from Montreal to O'Hare Intl by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Montreal 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 Montreal 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 Montreal to O'Hare Intl become cheaper?

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

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