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Cheap flights from Montreal to Chicago from C$ 230

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 2/12. 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
9:25 a.m. - 11:18 a.m.YUL-ORD
2h 53mdirect
Air Canada Logo
2:00 p.m. - 9:51 p.m.ORD-YUL
6h 51m1 stop
C$ 356Air Canada
Find Deal
dom., 22 mar. - lun., 30 mar.
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$ 357Air Canada
Find Deal
lun., 19 ene. - mié., 21 ene.
Delta Logo
7:00 a.m. - 4:39 p.m.YUL-ORD
10h 39m1 stop
Delta Logo
5:50 a.m. - 5:04 p.m.ORD-YUL
10h 14m1 stop
C$ 358Delta
Find Deal
sáb., 4 abr. - mar., 7 abr.
Delta Logo
7:00 a.m. - 4:39 p.m.YUL-ORD
10h 39m1 stop
Delta Logo
7:10 a.m. - 5:04 p.m.ORD-YUL
8h 54m1 stop
C$ 360Delta
Find Deal
sáb., 4 abr. - mié., 8 abr.
Air Canada Logo
8:30 a.m. - 10:08 a.m.YUL-ORD
2h 38mdirect
Air Canada Logo
8:40 a.m. - 11:51 a.m.ORD-YUL
2h 11mdirect
C$ 361Air Canada
Find Deal
sáb., 4 abr. - sáb., 11 abr.
Air Canada Logo
9:25 a.m. - 11:18 a.m.YUL-ORD
2h 53mdirect
Air Canada Logo
4:15 p.m. - 9:51 p.m.ORD-YUL
4h 36m1 stop
C$ 363Air Canada
Find Deal
dom., 22 mar. - lun., 30 mar.
Multiple Airlines Logo
7:00 a.m. - 1:14 p.m.YUL-ORD
7h 14m1 stop
Multiple Airlines Logo
7:15 a.m. - 10:20 a.m.ORD-YUL
2h 05mdirect
C$ 375Multiple Airlines
Find Deal
mié., 18 mar. - mié., 25 mar.
American Airlines Logo
3:50 p.m. - 5:50 p.m.YUL-ORD
3h 00mdirect
American Airlines Logo
8:50 p.m. - 12:20 p.m.ORD-YUL
14h 30m1 stop
C$ 399American Airlines
Find Deal
jue., 4 dic. - sáb., 6 dic.
Multiple Airlines Logo
5:25 p.m. - 11:08 a.m.YUL-ORD
18h 43m2 stops
Multiple Airlines Logo
3:20 p.m. - 4:23 p.m.ORD-YUL
24h 03m1 stop
C$ 408Multiple Airlines
Find Deal
jue., 4 dic. - dom., 7 dic.
American Airlines Logo
3:49 p.m. - 5:49 p.m.YUL-ORD
3h 00mdirect
American Airlines Logo
6:48 a.m. - 12:15 p.m.ORD-YUL
4h 27m1 stop
C$ 418American Airlines
Find Deal
vie., 28 nov. - mar., 2 dic.

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
22 Mar
YUL9:25 a.m.Montreal Pierre Elliott Trudeau Intl
2h 53m
ORD11:18 a.m.Chicago O'Hare Intl
30 Mar
ORD2:00 p.m.Chicago O'Hare Intl
6h 51m
1 stop
YUL9:51 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 356
Find similar
Air Canada
19 Jan
YUL6:25 p.m.Montreal Pierre Elliott Trudeau Intl
2h 45m
ORD8:10 p.m.Chicago O'Hare Intl
21 Jan
ORD3:35 p.m.Chicago O'Hare Intl
2h 05m
YUL6:40 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 357
Find similar
Air Canada
4 Apr
YUL8:30 a.m.Montreal Pierre Elliott Trudeau Intl
2h 38m
ORD10:08 a.m.Chicago O'Hare Intl
11 Apr
ORD8:40 a.m.Chicago O'Hare Intl
2h 11m
YUL11:51 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 361
Find similar

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

Our best United Airlines deals on Montreal to Chicago O'Hare Intl Airport flight tickets
United Airlines
15 Nov
YUL4:45 p.m.Montreal Pierre Elliott Trudeau Intl
3h 00m
ORD6:45 p.m.Chicago O'Hare Intl
25 Dec
ORD5:52 p.m.Chicago O'Hare Intl
2h 25m
YUL9:17 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 676
Find similar
United Airlines
14 Nov
YUL2:13 p.m.Montreal Pierre Elliott Trudeau Intl
8h 25m
1 stop
ORD9:38 p.m.Chicago O'Hare Intl
25 Dec
ORD5:52 p.m.Chicago O'Hare Intl
2h 25m
YUL9:17 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 684
Find similar
United Airlines
15 Nov
YUL10:50 a.m.Montreal Pierre Elliott Trudeau Intl
13h 53m
2 stops
ORD11:43 p.m.Chicago O'Hare Intl
29 Dec
ORD9:15 p.m.Chicago O'Hare Intl
9h 30m
1 stop
YUL7:45 a.m.Montreal Pierre Elliott Trudeau Intl
C$ 728
Find similar

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 6 noviembre 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

Fly to

Route

Depart

Return

Price

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

dom. 22/3

9:25 a.m.-11:18 a.m.

Nonstop2h 53m

Chicago O'Hare Intl

lun. 30/3

2:00 p.m.-9:51 p.m.

1 stop6h 51m

C$ 356

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

lun. 19/1

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

Nonstop2h 45m

Chicago O'Hare Intl

mié. 21/1

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

Nonstop2h 05m

C$ 357

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

sáb. 4/4

7:00 a.m.-4:39 p.m.

1 stop10h 39m

Chicago O'Hare Intl

mar. 7/4

5:50 a.m.-5:04 p.m.

1 stop10h 14m

C$ 358

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

sáb. 4/4

7:00 a.m.-4:39 p.m.

1 stop10h 39m

Chicago O'Hare Intl

mié. 8/4

7:10 a.m.-5:04 p.m.

1 stop8h 54m

C$ 360

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

sáb. 4/4

8:30 a.m.-10:08 a.m.

Nonstop2h 38m

Chicago O'Hare Intl

sáb. 11/4

8:40 a.m.-11:51 a.m.

Nonstop2h 11m

C$ 361

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

dom. 22/3

9:25 a.m.-11:18 a.m.

Nonstop2h 53m

Chicago O'Hare Intl

lun. 30/3

4:15 p.m.-9:51 p.m.

1 stop4h 36m

C$ 363

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

mié. 18/3

7:00 a.m.-1:14 p.m.

1 stop7h 14m

Chicago O'Hare Intl

mié. 25/3

7:15 a.m.-10:20 a.m.

Nonstop2h 05m

C$ 375

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

jue. 4/12

3:50 p.m.-5:50 p.m.

Nonstop3h 00m

Chicago O'Hare Intl

sáb. 6/12

8:50 p.m.-12:20 p.m.

1 stop14h 30m

C$ 399

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

jue. 4/12

5:25 p.m.-11:08 a.m.

2 stops18h 43m

Chicago O'Hare Intl

dom. 7/12

3:20 p.m.-4:23 p.m.

1 stop24h 03m

C$ 408

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

vie. 28/11

3:49 p.m.-5:49 p.m.

Nonstop3h 00m

Chicago O'Hare Intl

mar. 2/12

6:48 a.m.-12:15 p.m.

1 stop4h 27m

C$ 418

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 cheapest month to fly to Chicago O'Hare Intl Airport?

In general, August 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$ 402. The month of May is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Montreal averaging around C$ 409.

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$ 730. 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$ 1,010.

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$ 758. 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$ 1,055 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$ 525 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$ 326 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?

You could potentially save up to 8% on your flight if you consider stops on a Montreal to Chicago O'Hare Intl Airport flight.

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

As of November 2025, prices for Montreal to Chicago O'Hare Intl Airport flights are approximately 16% more expensive 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$ 308

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$ 308. The best round-trip flight deal from Montreal to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 610.
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$ 207Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
Air CanadaPriceFrom C$ 264Free CancellationRating
7.1
10,415 reviews
Search Air Canada flights
United AirlinesPriceFrom C$ 276Free CancellationRating
7.4
9,004 reviews
Search United Airlines flights
Porter AirlinesPriceFrom C$ 301Free CancellationRating
8.0
387 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$ 301. Generally, Porter Airlines has 4 flights on this route every week with an average price of C$ 635. Porter Airlines is rated 8.0/10 by our users.

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

    Across 9,004 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$ 276 to C$ 510. 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
Hammond
Naperville
Glenview
Great Lakes
Wheeling
Des Plaines
Elk Grove Village
Harvard
Merrillville
Oak Brook
Elmhurst
Kenosha
Skokie
Rockford

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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