How long is the flight from Montreal to Chicago O'Hare Intl Airport?

For as low as C$ 323, Delta can have you in Chicago O'Hare Intl Airport from Montreal in 7h 45m. There are 1199 km between Montreal and Chicago O'Hare Intl Airport.

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

Currently priced at C$ 176, American Airlines will fly you from Montreal 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 Air Canada and United Airlines - these airlines can fly you to your destination from C$ 248 and C$ 256, respectively. These flights start at 62% lower than the current average price 3 months from now.

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.

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).

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$ 901, our data indicates the cheapest price to be C$ 188. The most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), is priced around C$ 308.

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

Consider Qatar Airways (94%), Iberia (89%) or Japan Airlines (88%) when booking your flight. These represent the most reliable airlines when flying from Montreal to Chicago O'Hare Intl Airport.

What are the most popular airlines that fly from Montreal to Chicago O'Hare Intl Airport?

The most popular airlines flying from Montreal to Chicago O'Hare Intl Airport are Air Canada, United Airlines and American Airlines. Something to consider prior to booking your flight.

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.

C$ 170+ Cheap Flights from Montreal to Chicago O'Hare Intl Airport

Q: How much does it cost to fly round-trip from Montreal to Chicago O'Hare Intl Airport?

Airfare is below average for this route at the moment. Montreal to Chicago O'Hare Intl Airport flights typically cost between C$ 316 and C$ 487 in May. The cheapest round-trip price found within the last 3 days was C$ 263 on Air Canada (8 May-10 May).

Cheapflights Tip: The best prices from Montreal to Chicago O'Hare Intl are usually found in November or May, booked 79 days in advance, depart on a Thursday or Saturday and return on a Friday

Cheap flight deals from Montreal to O'Hare Intl

Enter your travel dates to find the best prices.

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Best

Direct

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One-way

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 17 March 2026.

Fri 1/56:30 p.m.

YUL

ORD

Nonstop2h 38m

Air Canada

Fri 8/58:45 a.m.

ORD

YUL

Nonstop2h 15m

Air Canada

Deal found 17/3C$ 260

Fri 5/64:30 p.m.

YUL

ORD

1 stop4h 46m

Air Canada

Mon 8/67:25 a.m.

ORD

YUL

1 stop5h 20m

Air Canada

Deal found 12/3C$ 264

Fri 8/56:30 p.m.

YUL

ORD

Nonstop2h 38m

Air Canada

Sun 10/58:45 a.m.

ORD

YUL

Nonstop2h 15m

Air Canada

Deal found 14/3C$ 266

Fri 10/49:15 a.m.

YUL

ORD

Nonstop2h 38m

Air Canada

Mon 13/48:40 a.m.

ORD

YUL

Nonstop2h 11m

Air Canada

Deal found 13/3C$ 267

Thu 9/41:20 p.m.

YUL

ORD

Nonstop2h 35m

Air Canada

Sun 12/412:50 p.m.

ORD

YUL

Nonstop2h 15m

Air Canada

Deal found 12/3C$ 268

Fri 1/56:30 p.m.

YUL

ORD

Nonstop2h 38m

Air Canada

Sat 23/58:45 a.m.

ORD

YUL

Nonstop2h 15m

Air Canada

Deal found 16/3C$ 275

Fri 24/49:15 a.m.

YUL

ORD

Nonstop2h 38m

Air Canada

Sun 26/47:55 a.m.

ORD

YUL

1 stop5h 26m

Air Canada

Deal found 13/3C$ 277

Sat 25/46:30 p.m.

YUL

ORD

Nonstop2h 35m

Air Canada

Sun 26/46:40 p.m.

ORD

YUL

1 stop4h 51m

Air Canada

Deal found 14/3C$ 278

Find flight deals from Montreal to O'Hare Intl

Round-trip from	C$ 263
One-way from	C$ 170
Popular in	December
Cheapest in	November
Average price	C$ 452
Good round-trip deal	C$ 514 or less
Good one-way deal	C$ 384 or less

Air Canada
8/5-10/5
2 total stops
11h 36m total
Montreal to Chicago

Search Deals

Air Canada
2/6
Nonstop
2h 38m total
Montreal to Chicago

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (C$ 65 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (C$ 21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2026

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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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Cheapflights Fare Finder

Use the filters below to find and compare flights from Montreal to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sun 19/4

6:00 a.m.-12:45 p.m.

1 stop7h 45m

Chicago O'Hare Intl

Wed 22/4

12:00 p.m.-6:51 p.m.

1 stop5h 51m

C$ 323

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 6/6

12:49 p.m.-8:14 p.m.

1 stop8h 25m

Chicago O'Hare Intl

Fri 12/6

1:15 p.m.-11:56 p.m.

1 stop9h 41m

C$ 341

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 18/4

12:42 p.m.-6:48 p.m.

1 stop7h 06m

Chicago O'Hare Intl

Tue 21/4

11:19 a.m.-5:40 p.m.

1 stop5h 21m

C$ 341

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 16/4

6:00 a.m.-10:19 a.m.

1 stop5h 19m

Chicago O'Hare Intl

Mon 20/4

8:15 a.m.-5:40 p.m.

1 stop8h 25m

C$ 344

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 16/4

6:45 p.m.-11:59 p.m.

1 stop6h 14m

Chicago O'Hare Intl

Sun 19/4

7:00 a.m.-4:15 p.m.

1 stop8h 15m

C$ 344

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 8/5

5:06 p.m.-8:14 p.m.

1 stop4h 08m

Chicago O'Hare Intl

Sun 10/5

6:00 a.m.-5:42 p.m.

1 stop10h 42m

C$ 344

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Sat 2/5

6:00 a.m.-10:19 a.m.

1 stop5h 19m

Chicago O'Hare Intl

Sat 23/5

12:30 p.m.-11:41 p.m.

1 stop10h 11m

C$ 357

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 1/5

12:42 p.m.-9:25 p.m.

1 stop9h 43m

Chicago O'Hare Intl

Sat 23/5

12:30 p.m.-11:41 p.m.

1 stop10h 11m

C$ 372

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 4/5

12:50 p.m.-9:25 p.m.

1 stop9h 35m

Chicago O'Hare Intl

Thu 7/5

7:07 a.m.-5:42 p.m.

1 stop9h 35m

C$ 381

Quickest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 9/4

12:50 p.m.-8:17 p.m.

1 stop8h 27m

Chicago O'Hare Intl

Sun 12/4

7:10 a.m.-11:59 a.m.

1 stop3h 49m

C$ 403

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/3

Showing 1-10 of 19 resultsSorted by cheapest first

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.

YMQ-ORD

YUL-ORD

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

YMQ-ORD

YUL-ORD

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

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 75 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, February is the cheapest month in which you can book a flight from Montreal to Chicago O'Hare Intl Airport (average of C$ 179). Flying from Montreal to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 385). 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?

It’s typically best to fly out from Montreal to Chicago O'Hare Intl Airport in the evening. Doing so could potentially save you 66% on the flight price compared to flying at noon, which is usually more expensive.

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

The most flights from YMQ to ORD are scheduled on a Monday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).

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

Reviews of airlines servicing O'Hare Intl

See what other customers who have flown with United Airlines,American Airlines, andAir Canada from Montreal to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

9,431 reviews

Check prices

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

United Airlines

7.4

Good

9,431 reviews

United Airlines

7.4

Good

9,431 reviews

Check prices

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

American Airlines

7.1

Good

11,466 reviews

United Airlines

7.4

Good

9,431 reviews

Check prices

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

Air Canada

7.1

Good

10,811 reviews

United Airlines

7.4

Good

9,431 reviews

Check prices

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

How long is the flight from Montreal to Chicago O'Hare Intl Airport?
For as low as C$ 323, Delta can have you in Chicago O'Hare Intl Airport from Montreal in 7h 45m. There are 1199 km between Montreal and Chicago O'Hare Intl Airport.
What are the cheapest airlines flying from Montreal to Chicago O'Hare Intl Airport round-trip?
Currently priced at C$ 176, American Airlines will fly you from Montreal 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 Air Canada and United Airlines - these airlines can fly you to your destination from C$ 248 and C$ 256, respectively. These flights start at 62% lower than the current average price 3 months from now.
What are the most reliable airlines from Montreal to Chicago O'Hare Intl Airport?
Consider Qatar Airways (94%), Iberia (89%) or Japan Airlines (88%) 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$ 901, our data indicates the cheapest price to be C$ 188. The most popular route (Montreal Pierre Elliott Trudeau Intl - Chicago O'Hare Intl), is priced around C$ 308.
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, February is the cheapest month in which you can book a flight from Montreal to Chicago O'Hare Intl Airport (average of C$ 179). Flying from Montreal to Chicago O'Hare Intl Airport in July is currently the most expensive (average of C$ 385). 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

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Naperville

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Pierre Elliott Trudeau Intl to O'Hare Intl flights

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Québec City to O'Hare Intl flights

Québec City to Midway flights

Top 4 airlines flying from Montreal to O'Hare Intl

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	CheapestC$ 176	AverageC$ 361	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
Air Canada	CheapestC$ 248	AverageC$ 500	FlexibilityNo cancel fee	On-time67%	Search Air Canada flights
United Airlines	CheapestC$ 256	AverageC$ 493	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Porter Airlines	CheapestC$ 292	AverageC$ 503	FlexibilityNo cancel fee	On-time52%	Search Porter Airlines flights

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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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Cheap flights from Montreal to Chicago O'Hare Intl Airport from C$ 170

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Montreal to O'Hare Intl

Cheapest flights from Montreal to O'Hare IntlExplore 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 17 March 2026.

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 17 March 2026.

Best flights from Montreal to O'Hare IntlDiscover carefully curated flight deals from Montreal to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 17 March 2026.

Discover carefully curated flight deals from Montreal to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 17 March 2026.

Direct flights from Montreal to O'Hare IntlExplore direct flight options from Montreal to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 March 2026.

Explore direct flight options from Montreal to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 March 2026.

Last-minute flights from Montreal to O'Hare IntlDiscover last-minute flight deals from Montreal to O'Hare Intl. Data last updated 17 March 2026 and is based on user searches.

Discover last-minute flight deals from Montreal to O'Hare Intl. Data last updated 17 March 2026 and is based on user searches.

One-way flights from Montreal to O'Hare IntlSearch for one-way flight options from Montreal to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 17 March 2026.

Search for one-way flight options from Montreal to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 17 March 2026.

Find flight deals from Montreal to O'Hare Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

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Use the filters below to find and compare flights from Montreal to Chicago O'Hare Intl Airport that are best for you.

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.

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 13 March 2026.

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

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 17 March 2026.

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 17 March 2026.

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

Reviews of airlines servicing O'Hare Intl

See what other customers who have flown with United Airlines,American Airlines, andAir Canada from Montreal to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

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.

How long is the flight from Montreal to Chicago O'Hare Intl Airport?

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

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

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

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

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

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

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

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

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Alternative routes for Montreal to O'Hare Intl

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Search flights from Montreal to O'Hare Intl by cabin class

Find flights from Montreal to O'Hare Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to O'Hare Intl

Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 17 March 2026.

Montreal and O'Hare Intl flights

Browse other Montreal and O'Hare Intl flight options. Last updated on 17 March 2026.

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Top 4 airlines flying from Montreal to O'Hare Intl

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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 17 March 2026.

Best flights from Montreal to O'Hare Intl
Discover carefully curated flight deals from Montreal to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 17 March 2026.

Direct flights from Montreal to O'Hare Intl
Explore direct flight options from Montreal to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 17 March 2026.

Last-minute flights from Montreal to O'Hare Intl
Discover last-minute flight deals from Montreal to O'Hare Intl. Data last updated 17 March 2026 and is based on user searches.

One-way flights from Montreal to O'Hare Intl
Search for one-way flight options from Montreal to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 17 March 2026.