What is the cheapest airline that flies from Montreal to Chicago O'Hare Intl?

Air Canada, American Airlines, and Delta are the most popular carriers operating from Montreal to Chicago O'Hare Intl

Which airlines fly to Chicago O'Hare Intl Airport?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from Montreal according to our data. Air Canada is the first choice among our users, with 85% of people opting to fly with this airline when travelling to Chicago O'Hare Intl Airport. Keep in mind that there are 4 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.

How many flights depart from Montreal to Chicago O'Hare Intl Airport on average per week?

As of July 2025, 209 flights take off from Montreal and land in Chicago O'Hare Intl Airport each week. The most common flight departure day for this route is Thu, with 15% of weekly flights taking off on this day.

How many flights depart from Montreal to Chicago O'Hare Intl Airport on average per day?

As of July 2025, there are 29 flights per day flying from Montreal to Chicago O'Hare Intl Airport. The most common time of day flights depart is 6:00a.m., with 48% of flights taking off in the afternoon.

How many operators does momondo search for flights from Montreal to Chicago O'Hare Intl Airport?

As of July 2025, there are 4 operators available to choose from for flights from Montreal to Chicago O'Hare Intl Airport.

How old do you have to be to fly from Montreal to Chicago O'Hare Intl Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Chicago O'Hare Intl Airport.

What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

The required travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago O'Hare Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

C$ 135 Cheap Flights from Montreal to Chicago O'Hare Intl Airport in 2025

Q: What is the typical price of a round-trip flight between Montreal and Chicago O'Hare Intl Airport?

Prices are currently low for flights on this route. Typical prices usually range from C$ 408 to C$ 618. The lowest price recently found on this route was C$ 187.

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Find the cheapest flights from Montreal to Chicago

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

8:20 a.m. - 9:51 a.m.YUL-ORD

2h 31mdirect

10:40 a.m. - 1:54 p.m.ORD-YUL

2h 14mdirect

C$ 187Air Canada

Find Deal

Thu, 4 Sep - Sun, 7 Sep

12:00 p.m. - 5:33 p.m.YUL-ORD

6h 33m1 stop

10:40 a.m. - 1:54 p.m.ORD-YUL

2h 14mdirect

C$ 190Air Canada

Find Deal

Wed, 3 Sep - Sat, 6 Sep

8:20 a.m. - 9:51 a.m.YUL-ORD

2h 31mdirect

10:40 a.m. - 1:54 p.m.ORD-YUL

2h 14mdirect

C$ 197Air Canada

Find Deal

Fri, 19 Sep - Mon, 29 Sep

8:20 a.m. - 9:51 a.m.YUL-ORD

2h 31mdirect

8:25 p.m. - 1:50 a.m.ORD-YUL

4h 25m1 stop

C$ 200Air Canada

Find Deal

Thu, 4 Sep - Sun, 7 Sep

7:50 a.m. - 10:49 p.m.YUL-ORD

15h 59m1 stop

8:10 a.m. - 11:36 a.m.ORD-YUL

2h 26mdirect

C$ 243American Airlines

Find Deal

Sat, 16 Aug - Sun, 17 Aug

12:59 p.m. - 5:29 p.m.YUL-ORD

5h 30m1 stop

8:25 a.m. - 11:46 a.m.ORD-YUL

2h 21mdirect

C$ 245American Airlines

Find Deal

Thu, 4 Sep - Sun, 7 Sep

7:50 a.m. - 3:45 p.m.YUL-ORD

8h 55m1 stop

8:10 a.m. - 11:36 a.m.ORD-YUL

2h 26mdirect

C$ 252American Airlines

Find Deal

Thu, 14 Aug - Sun, 17 Aug

6:00 a.m. - 1:09 p.m.YUL-ORD

8h 09m1 stop

9:10 a.m. - 5:43 p.m.ORD-YUL

7h 33m1 stop

C$ 283Delta

Find Deal

Thu, 4 Sep - Tue, 9 Sep

6:00 a.m. - 1:09 p.m.YUL-ORD

8h 09m1 stop

5:30 p.m. - 11:16 p.m.ORD-YUL

4h 46m1 stop

C$ 295Delta

Find Deal

Wed, 3 Sep - Sat, 6 Sep

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

7h 45m1 stop

12:59 p.m. - 9:48 p.m.ORD-YUL

7h 49m1 stop

C$ 306Delta

Find Deal

Tue, 26 Aug - Wed, 3 Sep

American Airlines flights from Montreal to Chicago O'Hare Intl Airport

Our best American Airlines deals on Montreal to Chicago O'Hare Intl Airport flight tickets

American Airlines

16 Aug

YUL7:50 a.m.Montreal Pierre Elliott Trudeau Intl

15h 59m

1 stop

ORD10:49 p.m.Chicago O'Hare Intl

17 Aug

ORD8:10 a.m.Chicago O'Hare Intl

2h 26m

YUL11:36 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 243

Find similar

American Airlines

4 Sep

YUL12:59 p.m.Montreal Pierre Elliott Trudeau Intl

5h 30m

1 stop

ORD5:29 p.m.Chicago O'Hare Intl

7 Sep

ORD8:25 a.m.Chicago O'Hare Intl

2h 21m

YUL11:46 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 245

Find similar

American Airlines

14 Aug

YUL7:50 a.m.Montreal Pierre Elliott Trudeau Intl

8h 55m

1 stop

ORD3:45 p.m.Chicago O'Hare Intl

17 Aug

ORD8:10 a.m.Chicago O'Hare Intl

2h 26m

YUL11:36 a.m.Montreal Pierre Elliott Trudeau Intl

C$ 252

Find similar

Air Canada flights from Montreal to Chicago O'Hare Intl Airport

Our best Air Canada deals on Montreal to Chicago O'Hare Intl Airport flight tickets

Air Canada

4 Sep

YUL8:20 a.m.Montreal Pierre Elliott Trudeau Intl

2h 31m

ORD9:51 a.m.Chicago O'Hare Intl

7 Sep

ORD10:40 a.m.Chicago O'Hare Intl

2h 14m

YUL1:54 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 187

Find similar

Air Canada

3 Sep

YUL12:00 p.m.Montreal Pierre Elliott Trudeau Intl

6h 33m

1 stop

ORD5:33 p.m.Chicago O'Hare Intl

6 Sep

ORD10:40 a.m.Chicago O'Hare Intl

2h 14m

YUL1:54 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 190

Find similar

Air Canada

19 Sep

YUL8:20 a.m.Montreal Pierre Elliott Trudeau Intl

2h 31m

ORD9:51 a.m.Chicago O'Hare Intl

29 Sep

ORD10:40 a.m.Chicago O'Hare Intl

2h 14m

YUL1:54 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 197

Find similar

How to get the cheapest flight ticket from Montreal to Chicago O'Hare Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the typical price of a round-trip flight between Montreal and Chicago O'Hare Intl Airport?

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

In general, May is the cheapest month to fly from Montreal to Chicago O'Hare Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 394. The month of June is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Montreal averaging around C$ 423.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Thursday when prices can be found for as low as C$ 743. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Montreal to Chicago O'Hare Intl Airport for around C$ 1,015.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

In the afternoon is the cheapest time of day to fly from Montreal to Chicago O'Hare Intl Airport when you can find flight prices for as low as C$ 791. Flying to Chicago O'Hare Intl Airport in the afternoon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 915 on average. Flights to Chicago O'Hare Intl Airport from Montreal at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Montreal to Chicago O'Hare Intl flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl for the best Montreal - Chicago O'Hare Intl flight prices

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around C$ 529 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Montreal for as low as C$ 287 on momondo.

What cabin class options are available on Montreal to Chicago O'Hare Intl flights?

There are 4 cabin classes available to choose from on Montreal to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Montreal to Chicago O'Hare Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Montreal to Chicago O'Hare Intl Airport.

How have Montreal to Chicago O'Hare Intl Airport flight prices changed over time?

As of July 2025, prices for Montreal to Chicago O'Hare Intl Airport flights are approximately 28% cheaper when compared to flights at the same time last year.

When to book flights from Montreal to Chicago O'Hare Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Montreal to Chicago O'Hare Intl Airport according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Montreal to Chicago O'Hare Intl Airport (YMQ to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to Chicago O'Hare Intl Airport

Best price found	C$ 135
Fastest flight time	2h 31m
Direct flights	Every day

The best one-way flight to Chicago O'Hare Intl Airport from Montreal in the past 72 hours is C$ 135. The best round-trip flight deal from Montreal to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 187.

The fastest flight from Montreal to Chicago O'Hare Intl Airport takes 2h 31m

Direct flights go from Montreal to Chicago O'Hare Intl Airport every day.

Search flight deals

How far is Montreal to Chicago O'Hare Intl by plane?
The straight-line distance from Montreal to Chicago O'Hare Intl is 1213.9 km. Typically, this will take 2h 31m by plane in normal conditions.
When did momondo last update prices for flights from Montreal to Chicago O'Hare Intl Airport?
Prices for flights from Montreal to Chicago O'Hare Intl Airport are updated daily.
How many operators does momondo search for flights from Montreal to Chicago O'Hare Intl Airport?
As of July 2025, there are 4 operators available to choose from for flights from Montreal to Chicago O'Hare Intl Airport.
How old do you have to be to fly from Montreal to Chicago O'Hare Intl Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The required travel and health documents for your Chicago O'Hare Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Chicago O'Hare Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Montreal to Chicago O'Hare Intl Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Montreal to Chicago O'Hare Intl Airport is Embraer 175 (Enhanced Winglets) (26.90% of total bookings). The next most popular plane models are Embraer 175 (17.24%), Boeing 737 MAX 8 (13.09%), and Airbus A321-100/200 (8.59%).
What is the most popular airline from Montreal to Chicago O'Hare Intl Airport?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Montreal to Chicago O'Hare Intl Airport is Air Canada (90% of total bookings). The next most popular airline is United Airlines (10%).

Best airlines flying from Montreal to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Montreal to Chicago O'Hare Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom C$ 265	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Air Canada	PriceFrom C$ 302	Free Cancellation	Rating 7.1 9,692 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 344	Free Cancellation	Rating 7.4 8,846 reviews	Search United Airlines flights
WestJet	PriceFrom C$ 448	Free Cancellation	Rating 7.2 2,924 reviews	Search WestJet flights

United Airlines Flights From Montreal to Chicago O'Hare Intl Airport
The lowest priced United Airlines flight from Montreal to Chicago O'Hare Intl Airport from the last 72 hours was C$ 252. Generally, United Airlines has 41 flights on this route every week with an average price of C$ 351. United Airlines is rated 7.4/10 by our users.
American Airlines Flights From Montreal to Chicago O'Hare Intl Airport
Across 10,000 American Airlines reviews on momondo, the average score is 7.2/10. American Airlines flies from Montreal to Chicago O'Hare Intl Airport about 11 times each week, with ticket deals ranging from C$ 193 to C$ 363. Price data is based on momondo searches in the last 72 hours.

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Why use momondo?

Why should I use momondo to find a flight deal from Montreal to Chicago?

Finding the right flight to Chicago from Montreal is quick and easy when you have a range of options in front of you, from reputable agents and recognizable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Chicago quick and easy, saving you time and money.

Can I find flights from Montreal to Chicago with flexible booking policies on momondo?

Yes. All flights to Chicago from Montreal on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Montreal to Chicago?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Chicago from Montreal.

I’m not ready to book a flight from Montreal to Chicago right now. Can momondo alert me if prices change?

Price alerts on flights to Chicago from Montreal are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Chicago O'Hare Intl Airport trip

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Cheap flights from Montreal to Chicago from C$ 135

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Montreal to Chicago departing on 6/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Montreal to Chicago

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

American Airlines flights from Montreal to Chicago O'Hare Intl Airport

Our best American Airlines deals on Montreal to Chicago O'Hare Intl Airport flight tickets

Air Canada flights from Montreal to Chicago O'Hare Intl Airport

Our best Air Canada deals on Montreal to Chicago O'Hare Intl Airport flight tickets

See travel insights to Chicago from

How to get the cheapest flight ticket from Montreal to Chicago O'Hare Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Montreal and Chicago O'Hare Intl Airport?

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

What is the cheapest Montreal to Chicago O'Hare Intl flight route?

Fly from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl for the best Montreal - Chicago O'Hare Intl flight prices

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

What cabin class options are available on Montreal to Chicago O'Hare Intl flights?

There are 4 cabin classes available to choose from on Montreal to Chicago O'Hare Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Montreal to Chicago O'Hare Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Montreal to Chicago O'Hare Intl Airport.

How have Montreal to Chicago O'Hare Intl Airport flight prices changed over time?

As of July 2025, prices for Montreal to Chicago O'Hare Intl Airport flights are approximately 28% cheaper when compared to flights at the same time last year.

What is the cheapest airline that flies from Montreal to Chicago O'Hare Intl?

Air Canada, American Airlines, and Delta are the most popular carriers operating from Montreal to Chicago O'Hare Intl

Which airlines fly to Chicago O'Hare Intl Airport?

How many flights depart from Montreal to Chicago O'Hare Intl Airport on average per day?

As of July 2025, there are 29 flights per day flying from Montreal to Chicago O'Hare Intl Airport. The most common time of day flights depart is 6:00a.m., with 48% of flights taking off in the afternoon.

How many flights depart from Montreal to Chicago O'Hare Intl Airport on average per week?

As of July 2025, 209 flights take off from Montreal and land in Chicago O'Hare Intl Airport each week. The most common flight departure day for this route is Thu, with 15% of weekly flights taking off on this day.

When to book flights from Montreal to Chicago O'Hare Intl Airport

Cheap Montreal to Chicago O'Hare Intl Airport (YMQ to ORD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Montreal to Chicago O'Hare Intl Airport

Best price found

Fastest flight time

Direct flights

How far is Montreal to Chicago O'Hare Intl by plane?

When did momondo last update prices for flights from Montreal to Chicago O'Hare Intl Airport?

How many operators does momondo search for flights from Montreal to Chicago O'Hare Intl Airport?

How old do you have to be to fly from Montreal to Chicago O'Hare Intl Airport?

What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

What is the most popular plane model from Montreal to Chicago O'Hare Intl Airport?

What is the most popular airline from Montreal to Chicago O'Hare Intl Airport?

Best airlines flying from Montreal to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Montreal to Chicago O'Hare Intl Airport with momondo

United Airlines Flights From Montreal to Chicago O'Hare Intl Airport

American Airlines Flights From Montreal to Chicago O'Hare Intl Airport

Travelling to a place near Chicago?

Why use momondo?

Why should I use momondo to find a flight deal from Montreal to Chicago?

Can I find flights from Montreal to Chicago with flexible booking policies on momondo?

How can momondo help me find flights from Montreal to Chicago?

I’m not ready to book a flight from Montreal to Chicago right now. Can momondo alert me if prices change?

An easier way to manage your Chicago O'Hare Intl Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Chicago

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Popular flights according to clicks in the last 7 days on momondo