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Cheap flights from Montreal to Chicago from C$ 137

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 23/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Montreal to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
6:25 p.m. - 8:10 p.m.
YUL
-
ORD
2h 45mdirect
Air Canada Logo
12:50 p.m. - 4:01 p.m.
ORD
-
YUL
2h 11mdirect
C$ 242Air Canada
Mon, 23 Feb - Wed, 25 Feb
Air Canada Logo
6:25 p.m. - 8:10 p.m.
YUL
-
ORD
2h 45mdirect
Air Canada Logo
3:35 p.m. - 6:40 p.m.
ORD
-
YUL
2h 05mdirect
C$ 243Air Canada
Tue, 24 Feb - Wed, 4 Mar
United Airlines Logo
6:00 a.m. - 8:00 a.m.
YUL
-
ORD
3h 00mdirect
United Airlines Logo
1:00 p.m. - 12:13 a.m.
ORD
-
YUL
10h 13m
1 stop
C$ 254United Airlines
Thu, 26 Mar - Mon, 30 Mar
United Airlines Logo
4:45 p.m. - 6:45 p.m.
YUL
-
ORD
3h 00mdirect
United Airlines Logo
6:01 p.m. - 12:13 a.m.
ORD
-
YUL
5h 12m
1 stop
C$ 255United Airlines
Tue, 10 Mar - Tue, 31 Mar
United Airlines Logo
9:30 a.m. - 11:21 p.m.
YUL
-
ORD
14h 51m
1 stop
United Airlines Logo
6:12 p.m. - 9:34 p.m.
ORD
-
YUL
2h 22mdirect
C$ 262United Airlines
Thu, 4 Jun - Sun, 7 Jun
United Airlines Logo
2:13 p.m. - 6:50 p.m.
YUL
-
ORD
5h 37m
1 stop
United Airlines Logo
8:45 a.m. - 2:40 p.m.
ORD
-
YUL
4h 55m
1 stop
C$ 276United Airlines
Tue, 10 Mar - Tue, 31 Mar
United Airlines Logo
6:00 a.m. - 8:00 a.m.
YUL
-
ORD
3h 00mdirect
United Airlines Logo
6:00 a.m. - 3:16 p.m.
ORD
-
YUL
8h 16m
1 stop
C$ 281United Airlines
Thu, 12 Mar - Sun, 15 Mar
Air Canada Logo
1:20 p.m. - 2:55 p.m.
YUL
-
ORD
2h 35mdirect
Air Canada Logo
3:45 p.m. - 6:55 p.m.
ORD
-
YUL
2h 10mdirect
C$ 283Air Canada
Tue, 7 Apr - Sat, 11 Apr
Delta Logo
6:00 p.m. - 11:56 p.m.
YUL
-
ORD
6h 56m
1 stop
Delta Logo
5:25 a.m. - 4:53 p.m.
ORD
-
YUL
10h 28m
1 stop
C$ 285Delta
Mon, 23 Feb - Wed, 25 Feb
United Airlines Logo
6:35 p.m. - 11:43 p.m.
YUL
-
ORD
6h 08m
1 stop
United Airlines Logo
7:13 a.m. - 10:40 a.m.
ORD
-
YUL
2h 27mdirect
C$ 289United Airlines
Thu, 2 Apr - Mon, 6 Apr

Delta flights from Montreal to Chicago O'Hare Intl Airport

Our best Delta deals on Montreal to Chicago O'Hare Intl Airport flight tickets
Delta
23 Feb
YUL6:00 p.m.Montreal Pierre Elliott Trudeau Intl
6h 56m
1 stop
ORD11:56 p.m.Chicago O'Hare Intl
25 Feb
ORD5:25 a.m.Chicago O'Hare Intl
10h 28m
1 stop
YUL4:53 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 285
Delta
16 Apr
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
10h 42m
1 stop
ORD4:42 p.m.Chicago O'Hare Intl
24 Apr
ORD7:00 a.m.Chicago O'Hare Intl
3h 59m
1 stop
YUL11:59 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 296
Delta
1 May
YUL7:00 a.m.Montreal Pierre Elliott Trudeau Intl
10h 42m
1 stop
ORD4:42 p.m.Chicago O'Hare Intl
4 May
ORD2:25 p.m.Chicago O'Hare Intl
8h 23m
1 stop
YUL11:48 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 298

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
23 Feb
YUL6:25 p.m.Montreal Pierre Elliott Trudeau Intl
2h 45m
ORD8:10 p.m.Chicago O'Hare Intl
24 Feb
ORD7:15 a.m.Chicago O'Hare Intl
2h 05m
YUL10:20 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 242
Air Canada
24 Feb
YUL6:25 p.m.Montreal Pierre Elliott Trudeau Intl
2h 45m
ORD8:10 p.m.Chicago O'Hare Intl
4 Mar
ORD3:35 p.m.Chicago O'Hare Intl
2h 05m
YUL6:40 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 243
Air Canada
7 Apr
YUL1:20 p.m.Montreal Pierre Elliott Trudeau Intl
2h 35m
ORD2:55 p.m.Chicago O'Hare Intl
11 Apr
ORD3:45 p.m.Chicago O'Hare Intl
2h 10m
YUL6:55 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 283

momondo Fare Finder

 
Customize your flight search to find flights from Montreal to Chicago O'Hare Intl Airport 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, momondo users made 96,600 searches. Data last updated 5 February 2026.
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

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 23/2

6:25 p.m.-8:10 p.m.

Nonstop2h 45m

Chicago O'Hare Intl

Wed 25/2

12:50 p.m.-4:01 p.m.

Nonstop2h 11m

C$ 242

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 24/2

6:25 p.m.-8:10 p.m.

Nonstop2h 45m

Chicago O'Hare Intl

Wed 4/3

3:35 p.m.-6:40 p.m.

Nonstop2h 05m

C$ 243

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 26/3

6:00 a.m.-8:00 a.m.

Nonstop3h 00m

Chicago O'Hare Intl

Mon 30/3

1:00 p.m.-12:13 a.m.

1 stop10h 13m

C$ 254

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 10/3

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

Nonstop3h 00m

Chicago O'Hare Intl

Tue 31/3

6:01 p.m.-12:13 a.m.

1 stop5h 12m

C$ 255

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 4/6

9:30 a.m.-11:21 p.m.

1 stop14h 51m

Chicago O'Hare Intl

Sun 7/6

6:12 p.m.-9:34 p.m.

Nonstop2h 22m

C$ 262

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 10/3

2:13 p.m.-6:50 p.m.

1 stop5h 37m

Chicago O'Hare Intl

Tue 31/3

8:45 a.m.-2:40 p.m.

1 stop4h 55m

C$ 276

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 12/3

6:00 a.m.-8:00 a.m.

Nonstop3h 00m

Chicago O'Hare Intl

Sun 15/3

6:00 a.m.-3:16 p.m.

1 stop8h 16m

C$ 281

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 7/4

1:20 p.m.-2:55 p.m.

Nonstop2h 35m

Chicago O'Hare Intl

Sat 11/4

3:45 p.m.-6:55 p.m.

Nonstop2h 10m

C$ 283

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 23/2

6:00 p.m.-11:56 p.m.

1 stop6h 56m

Chicago O'Hare Intl

Wed 25/2

5:25 a.m.-4:53 p.m.

1 stop10h 28m

C$ 285

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 2/4

6:35 p.m.-11:43 p.m.

1 stop6h 08m

Chicago O'Hare Intl

Mon 6/4

7:13 a.m.-10:40 a.m.

Nonstop2h 27m

C$ 289

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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?

In general, November 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$ 373. The month of August is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Montreal averaging around C$ 380.

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$ 692. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, 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$ 1,027.

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$ 756. 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$ 1,147 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$ 480 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$ 289 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 February 2026, prices for Montreal to Chicago O'Hare Intl Airport flights are approximately 21% 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$ 305

Fastest flight time

2h 35m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Montreal in the past 72 hours is C$ 305. The best round-trip flight deal from Montreal to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 529.
The fastest flight from Montreal to Chicago O'Hare Intl Airport takes 2h 35m
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 35m 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?

  • 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?

  • 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
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom C$ 175Free CancellationRating
7.2
11,240 reviews
Search American Airlines flights
Air CanadaPriceFrom C$ 251Free CancellationRating
7.1
10,695 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 262Free CancellationRating
7.4
9,241 reviews
Search United Airlines flights
Porter AirlinesPriceFrom C$ 291Free CancellationRating
7.9
412 reviews
Search Porter Airlines flights

  • Porter Airlines Flights From Montreal to Chicago O'Hare Intl Airport

    The lowest priced Porter Airlines flight from Montreal to Chicago O'Hare Intl Airport from the last 72 hours was C$ 291. Generally, Porter Airlines has 7 flights on this route every week with an average price of C$ 502. Porter Airlines is rated 7.9/10 by our users.

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

    Across 9,241 United Airlines reviews on momondo, the average score is 7.4/10. United Airlines flies from Montreal to Chicago O'Hare Intl Airport about 35 times each week, with ticket deals ranging from C$ 262 to C$ 499. Price data is based on momondo searches in the last 72 hours.

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Schaumburg
Rosemont
Hoffman Estates
Northbrook
Tinley Park
Munster
Skokie
Great Lakes
Hammond
Harvey
Wheeling
Naperville
Glenview
Des Plaines
Elmhurst
Harvard
Merrillville
Elk Grove Village
Oak Brook
Kenosha

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.

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