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Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago from C$ 234

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 Pierre Elliott Trudeau Intl Airport to Chicago departing on 12/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago

Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
8:40 a.m. - 10:15 a.m.
YUL
-
ORD
2h 35mdirect
Air Canada Logo
7:25 a.m. - 1:45 p.m.
ORD
-
YUL
5h 20m
1 stop
C$ 381Air Canada
Tue, 8 Sep - Tue, 15 Sep
Air Canada Logo
4:30 p.m. - 8:41 p.m.
YUL
-
ORD
5h 11m
1 stop
Air Canada Logo
7:25 a.m. - 1:45 p.m.
ORD
-
YUL
5h 20m
1 stop
C$ 388Air Canada
Tue, 8 Sep - Tue, 15 Sep
Porter Airlines Logo
12:10 p.m. - 2:15 p.m.
YUL
-
ORD
3h 05mdirect
Porter Airlines Logo
8:08 a.m. - 11:26 a.m.
ORD
-
YUL
2h 18mdirect
C$ 393Porter Airlines
Wed, 25 Nov - Sat, 28 Nov
Porter Airlines Logo
5:34 p.m. - 7:19 p.m.
YUL
-
ORD
2h 45mdirect
Porter Airlines Logo
8:18 a.m. - 11:43 a.m.
ORD
-
YUL
2h 25mdirect
C$ 393Porter Airlines
Wed, 19 Aug - Wed, 26 Aug
Delta Logo
6:00 a.m. - 12:59 p.m.
YUL
-
ORD
7h 59m
1 stop
Delta Logo
11:30 a.m. - 6:58 p.m.
ORD
-
YUL
6h 28m
1 stop
C$ 395Delta
Tue, 29 Sep - Wed, 7 Oct
Delta Logo
6:00 a.m. - 12:59 p.m.
YUL
-
ORD
7h 59m
1 stop
Delta Logo
5:29 p.m. - 11:25 p.m.
ORD
-
YUL
4h 56m
1 stop
C$ 395Delta
Tue, 29 Sep - Sat, 10 Oct
United Airlines Logo
9:45 a.m. - 11:21 a.m.
YUL
-
ORD
2h 36mdirect
United Airlines Logo
2:01 p.m. - 5:30 p.m.
ORD
-
YUL
2h 29mdirect
C$ 403United Airlines
Tue, 18 Aug - Wed, 26 Aug
United Airlines Logo
9:45 a.m. - 11:21 a.m.
YUL
-
ORD
2h 36mdirect
United Airlines Logo
2:01 p.m. - 5:30 p.m.
ORD
-
YUL
2h 29mdirect
C$ 403United Airlines
Tue, 18 Aug - Tue, 25 Aug
American Airlines Logo
5:34 p.m. - 7:19 p.m.
YUL
-
ORD
2h 45mdirect
American Airlines Logo
5:00 a.m. - 12:27 p.m.
ORD
-
YUL
6h 27m
1 stop
C$ 430American Airlines
Tue, 25 Aug - Wed, 26 Aug
American Airlines Logo
5:34 p.m. - 7:19 p.m.
YUL
-
ORD
2h 45mdirect
American Airlines Logo
8:19 a.m. - 3:29 p.m.
ORD
-
YUL
6h 10m
1 stop
C$ 437American Airlines
Fri, 4 Sep - Sun, 6 Sep

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

Our best Air Canada deals on Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport flight tickets
Air Canada
8 Sep
YUL8:40 a.m.Montreal Pierre Elliott Trudeau Intl
2h 35m
ORD10:15 a.m.Chicago O'Hare Intl
15 Sep
ORD7:25 a.m.Chicago O'Hare Intl
5h 20m
1 stop
YUL1:45 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 381
Air Canada
8 Sep
YUL4:30 p.m.Montreal Pierre Elliott Trudeau Intl
5h 11m
1 stop
ORD8:41 p.m.Chicago O'Hare Intl
15 Sep
ORD7:25 a.m.Chicago O'Hare Intl
5h 20m
1 stop
YUL1:45 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 388
Air Canada
22 Aug
YUL1:15 p.m.Montreal Pierre Elliott Trudeau Intl
2h 29m
ORD2:44 p.m.Chicago O'Hare Intl
23 Aug
ORD9:50 a.m.Chicago O'Hare Intl
6h 37m
1 stop
YUL5:27 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 391

Delta flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport

Our best Delta deals on Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport flight tickets
Delta
22 Aug
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
5h 42m
1 stop
ORD10:42 a.m.Chicago O'Hare Intl
25 Aug
ORD1:59 p.m.Chicago O'Hare Intl
8h 31m
1 stop
YUL11:30 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 395
Delta
11 Aug
YUL6:00 a.m.Montreal Pierre Elliott Trudeau Intl
8h 08m
1 stop
ORD1:08 p.m.Chicago O'Hare Intl
15 Aug
ORD2:30 p.m.Chicago O'Hare Intl
8h 00m
1 stop
YUL11:30 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 402
Delta
19 Aug
YUL12:47 p.m.Montreal Pierre Elliott Trudeau Intl
8h 43m
1 stop
ORD8:30 p.m.Chicago O'Hare Intl
25 Aug
ORD1:59 p.m.Chicago O'Hare Intl
8h 31m
1 stop
YUL11:30 p.m.Montreal Pierre Elliott Trudeau Intl
C$ 403

momondo Fare Finder

 
Customize your flight search to find flights from Montreal Pierre Elliott Trudeau Intl Airport 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 28 July 2026.
Use the filters below to find and compare flights from Montreal Pierre Elliott Trudeau Intl Airport 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

Tue 8/9

8:40 a.m.-10:15 a.m.

Nonstop2h 35m

Chicago O'Hare Intl

Tue 15/9

7:25 a.m.-1:45 p.m.

1 stop5h 20m

C$ 381

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 8/9

4:30 p.m.-8:41 p.m.

1 stop5h 11m

Chicago O'Hare Intl

Tue 15/9

7:25 a.m.-1:45 p.m.

1 stop5h 20m

C$ 388

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 25/11

12:10 p.m.-2:15 p.m.

Nonstop3h 05m

Chicago O'Hare Intl

Sat 28/11

8:08 a.m.-11:26 a.m.

Nonstop2h 18m

C$ 393

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Wed 19/8

5:34 p.m.-7:19 p.m.

Nonstop2h 45m

Chicago O'Hare Intl

Wed 26/8

8:18 a.m.-11:43 a.m.

Nonstop2h 25m

C$ 393

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 29/9

6:00 a.m.-12:59 p.m.

1 stop7h 59m

Chicago O'Hare Intl

Wed 7/10

11:30 a.m.-6:58 p.m.

1 stop6h 28m

C$ 395

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 29/9

6:00 a.m.-12:59 p.m.

1 stop7h 59m

Chicago O'Hare Intl

Sat 10/10

5:29 p.m.-11:25 p.m.

1 stop4h 56m

C$ 395
Quickest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 18/8

9:45 a.m.-11:21 a.m.

Nonstop2h 36m

Chicago O'Hare Intl

Wed 26/8

2:01 p.m.-5:30 p.m.

Nonstop2h 29m

C$ 403

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 18/8

9:45 a.m.-11:21 a.m.

Nonstop2h 36m

Chicago O'Hare Intl

Tue 25/8

2:01 p.m.-5:30 p.m.

Nonstop2h 29m

C$ 403

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Tue 25/8

5:34 p.m.-7:19 p.m.

Nonstop2h 45m

Chicago O'Hare Intl

Wed 26/8

5:00 a.m.-12:27 p.m.

1 stop6h 27m

C$ 430

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

5:34 p.m.-7:19 p.m.

Nonstop2h 45m

Chicago O'Hare Intl

Sun 6/9

8:19 a.m.-3:29 p.m.

1 stop6h 10m

C$ 437

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 Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport and Chicago O'Hare Intl Airport?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 393 to C$ 684.
The lowest price recently found on this route was C$ 381.

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

In general, April is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport 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$ 372. The month of January is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Montreal Pierre Elliott Trudeau Intl Airport averaging around C$ 422.

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$ 707. 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 Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport for around C$ 1,047.

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 Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport when you can find flight prices for as low as C$ 744. 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$ 1,143 on average. Flights to Chicago O'Hare Intl Airport from Montreal Pierre Elliott Trudeau Intl Airport at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

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

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

How far in advance should I book a flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Montreal Pierre Elliott Trudeau Intl Airport 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$ 501 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 Pierre Elliott Trudeau Intl Airport for as low as C$ 323 on momondo.

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

There are 4 cabin classes available to choose from on Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport flights?

You could potentially save up to 3% on your flight if you consider stops on a Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport flight.

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

As of July 2026, prices for Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport flights are approximately 14% more expensive when compared to flights at the same time last year.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport (YUL to ORD) flight deals and tips

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

Best price found

C$ 421

Fastest flight time

2h 35m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from Montreal Pierre Elliott Trudeau Intl Airport in the past 72 hours is C$ 421. The best round-trip flight deal from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 560.
The fastest flight from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport takes 2h 35m
Direct flights go from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport every day.
Search flight deals

Frequently asked questions about flying from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport

  • How far is Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl by plane?

    A flight from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl will travel around 1198.8 km. Flights usually cover this in 2h 35m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport are refreshed on a daily basis.

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

  • How old do you have to be to fly from Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport.

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

    The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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

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

Compare and see reviews for airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom C$ 240Free CancellationRating
7.1
11,839 reviews
Search American Airlines flights
Porter AirlinesPriceFrom C$ 253Free CancellationRating
8.0
449 reviews
Search Porter Airlines flights
United AirlinesPriceFrom C$ 263Free CancellationRating
7.4
10,048 reviews
Search United Airlines flights
Air CanadaPriceFrom C$ 274Free CancellationRating
7.1
11,401 reviews
Search Air Canada flights

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

    Porter Airlines operates around 13 flights from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport every week. The average price of these flights found in the last 72 hours has been C$ 448, but momondo users have found Porter Airlines deals from Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport from as low as C$ 253 round-trip. Porter Airlines has been scored 8.0/10 in 449 reviews.

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

    United Airlines is also a popular choice for this route. United Airlines flight deals for Montreal Pierre Elliott Trudeau Intl Airport to Chicago O'Hare Intl Airport start from as low as C$ 263 round-trip, depending on your selected dates, with average United Airlines deals seen on momondo around C$ 508. United Airlines operates 40 flights to Chicago O'Hare Intl Airport from Montreal Pierre Elliott Trudeau Intl Airport in an average week. Users have rated it 7.4/10 across 10,048 reviews.

Travelling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Schaumburg
Glenview
Waukegan
Rosemont
Des Plaines
Merrillville
Kenosha
Northbrook
Skokie
Tinley Park
Evanston
Downers Grove
Great Lakes
Hammond
Naperville
Harvey
Munster
Hoffman Estates
Elmhurst
Valparaiso

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Montreal to Chicago for you.

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

Flights from Montreal to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

momondo helps you find the best flight between Montreal and Chicago by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Chicago, momondo offers a useful price alert feature which will track prices for flights to Chicago from Montreal and alert you when they change.

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