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Cheap flights from Chicago O'Hare Intl Airport to Montreal from $108

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to Montreal departing on 10/23. 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 Chicago O'Hare Intl Airport to Montreal

Cheap round-trip flights

Air Canada Logo
12:50 pm - 3:57 pmORD-YUL
2h 07mnonstop
Air Canada Logo
6:15 pm - 8:00 pmYUL-ORD
2h 45mnonstop
$275Air Canada
Find Deal
Wed, Oct 29 - Sat, Nov 1
Air Canada Logo
10:40 am - 1:54 pmORD-YUL
2h 14mnonstop
Air Canada Logo
6:15 pm - 8:00 pmYUL-ORD
2h 45mnonstop
$276Air Canada
Find Deal
Thu, Oct 23 - Sun, Oct 26
Air Canada Logo
12:50 pm - 3:57 pmORD-YUL
2h 07mnonstop
Air Canada Logo
1:10 pm - 2:55 pmYUL-ORD
2h 45mnonstop
$279Air Canada
Find Deal
Thu, Oct 30 - Thu, Nov 6
Air Canada Logo
8:40 am - 11:54 amORD-YUL
2h 14mnonstop
Air Canada Logo
6:15 pm - 8:00 pmYUL-ORD
2h 45mnonstop
$280Air Canada
Find Deal
Thu, Oct 23 - Sun, Oct 26
Air Canada Logo
8:25 pm - 1:50 amORD-YUL
4h 25m1 stop
Air Canada Logo
6:15 pm - 8:00 pmYUL-ORD
2h 45mnonstop
$281Air Canada
Find Deal
Thu, Oct 23 - Sun, Oct 26
United Airlines Logo
7:15 am - 1:28 pmORD-YUL
5h 13m1 stop
United Airlines Logo
4:45 pm - 6:45 pmYUL-ORD
3h 00mnonstop
$293United Airlines
Find Deal
Sat, Nov 1 - Sat, Nov 1
United Airlines Logo
7:11 am - 10:40 amORD-YUL
2h 29mnonstop
United Airlines Logo
6:15 am - 8:01 amYUL-ORD
2h 46mnonstop
$294United Airlines
Find Deal
Mon, Oct 6 - Tue, Oct 7
Multiple Airlines Logo
1:26 pm - 12:27 amORD-YUL
10h 01m2 stops
Multiple Airlines Logo
6:15 pm - 8:00 pmYUL-ORD
2h 45mnonstop
$295Multiple Airlines
Find Deal
Thu, Oct 23 - Sun, Oct 26
Multiple Airlines Logo
12:53 pm - 12:27 amORD-YUL
10h 34m2 stops
Multiple Airlines Logo
4:35 pm - 9:33 pmYUL-ORD
29h 58m1 stop
$298Multiple Airlines
Find Deal
Thu, Oct 23 - Sun, Oct 26
American Airlines Logo
1:24 pm - 4:39 pmORD-YUL
2h 15mnonstop
American Airlines Logo
5:24 pm - 6:59 pmYUL-ORD
2h 35mnonstop
$317American Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27

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

Our best Air Canada deals on Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
Air Canada
Oct 29
ORD12:50 pmChicago O'Hare Intl
2h 07m
YUL3:57 pmMontreal Pierre Elliott Trudeau Intl
Nov 1
YUL6:15 pmMontreal Pierre Elliott Trudeau Intl
2h 45m
ORD8:00 pmChicago O'Hare Intl
$275
Find similar
Air Canada
Oct 23
ORD10:40 amChicago O'Hare Intl
2h 14m
YUL1:54 pmMontreal Pierre Elliott Trudeau Intl
Oct 26
YUL6:15 pmMontreal Pierre Elliott Trudeau Intl
2h 45m
ORD8:00 pmChicago O'Hare Intl
$276
Find similar
Air Canada
Oct 30
ORD12:50 pmChicago O'Hare Intl
2h 07m
YUL3:57 pmMontreal Pierre Elliott Trudeau Intl
Nov 6
YUL1:10 pmMontreal Pierre Elliott Trudeau Intl
2h 45m
ORD2:55 pmChicago O'Hare Intl
$279
Find similar

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

Our best United Airlines deals on Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport flight tickets
United Airlines
Nov 1
ORD7:15 amChicago O'Hare Intl
5h 13m
1 stop
YUL1:28 pmMontreal Pierre Elliott Trudeau Intl
Nov 1
YUL4:45 pmMontreal Pierre Elliott Trudeau Intl
3h 00m
ORD6:45 pmChicago O'Hare Intl
$293
Find similar
United Airlines
Oct 6
ORD7:11 amChicago O'Hare Intl
2h 29m
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
Oct 7
YUL6:15 amMontreal Pierre Elliott Trudeau Intl
2h 46m
ORD8:01 amChicago O'Hare Intl
$294
Find similar
United Airlines
Oct 15
ORD7:11 amChicago O'Hare Intl
2h 29m
YUL10:40 amMontreal Pierre Elliott Trudeau Intl
Oct 15
YUL2:20 pmMontreal Pierre Elliott Trudeau Intl
6h 38m
1 stop
ORD7:58 pmChicago O'Hare Intl
$299
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau 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 832,500 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 10/29

12:50 pm-3:57 pm

Nonstop2h 07m

Montreal Pierre Elliott Trudeau Intl

Sat 11/1

6:15 pm-8:00 pm

Nonstop2h 45m

$275

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 10/23

10:40 am-1:54 pm

Nonstop2h 14m

Montreal Pierre Elliott Trudeau Intl

Sun 10/26

6:15 pm-8:00 pm

Nonstop2h 45m

$276

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 10/30

12:50 pm-3:57 pm

Nonstop2h 07m

Montreal Pierre Elliott Trudeau Intl

Thu 11/6

1:10 pm-2:55 pm

Nonstop2h 45m

$279

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 10/23

8:40 am-11:54 am

Nonstop2h 14m

Montreal Pierre Elliott Trudeau Intl

Sun 10/26

6:15 pm-8:00 pm

Nonstop2h 45m

$280

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 10/23

8:25 pm-1:50 am

1 stop4h 25m

Montreal Pierre Elliott Trudeau Intl

Sun 10/26

6:15 pm-8:00 pm

Nonstop2h 45m

$281

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 11/1

7:15 am-1:28 pm

1 stop5h 13m

Montreal Pierre Elliott Trudeau Intl

Sat 11/1

4:45 pm-6:45 pm

Nonstop3h 00m

$293

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Mon 10/6

7:11 am-10:40 am

Nonstop2h 29m

Montreal Pierre Elliott Trudeau Intl

Tue 10/7

6:15 am-8:01 am

Nonstop2h 46m

$294

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 10/23

1:26 pm-12:27 am

2 stops10h 01m

Montreal Pierre Elliott Trudeau Intl

Sun 10/26

6:15 pm-8:00 pm

Nonstop2h 45m

$295

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 10/23

12:53 pm-12:27 am

2 stops10h 34m

Montreal Pierre Elliott Trudeau Intl

Sun 10/26

4:35 pm-9:33 pm

1 stop29h 58m

$298

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 10/23

1:24 pm-4:39 pm

Nonstop2h 15m

Montreal Pierre Elliott Trudeau Intl

Mon 10/27

5:24 pm-6:59 pm

Nonstop2h 35m

$317

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 Montreal from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau 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 Montreal Pierre Elliott Trudeau Intl Airport?

The month of October is another great option to travel to Montreal Pierre Elliott Trudeau Intl Airport, with average flight prices from Chicago O'Hare Intl Airport averaging around $305.

What is the cheapest day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport?

The cheapest day to depart from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport is on a Thursday. Travelers who choose to depart for Montreal Pierre Elliott Trudeau Intl Airport on a Thursday will often find tickets for as low as $652. Flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport on a Sunday will generally be more expensive and average around $831. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Montreal Pierre Elliott Trudeau Intl Airport?

At noon is the cheapest time of day to fly from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport when you can find flight prices for as low as $600. Flying to Montreal Pierre Elliott Trudeau Intl Airport at noon is an ideal time because this is during off-peak travel hours. Flights in the morning are often more expensive with an average ticket price of $821.

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

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

How far in advance should I book a flight to Montreal Pierre Elliott Trudeau Intl Airport?

You are more likely to see cheaper flights to Montreal Pierre Elliott Trudeau Intl Airport from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Montreal Pierre Elliott Trudeau Intl Airport for around $404 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Montreal Pierre Elliott Trudeau Intl Airport from Chicago O'Hare Intl Airport for as low as $253 on momondo.

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

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

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

As of September 2025, prices for Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport flights are approximately 64% cheaper when compared to flights at the same time last year.

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

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

Cheap Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport (ORD to YUL) flight deals and tips

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

Best Price Found

$174

Fastest flight time

2h 05m

Direct flights

Every day
The best one-way flight to Montreal Pierre Elliott Trudeau Intl Airport from Chicago O'Hare Intl Airport in the past 72 hours is $174. The best round-trip flight deal from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport found on momondo in the last 72 hours is $459.
The fastest flight from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport takes 2h 05m
Direct flights go from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport every day.
Search flight deals

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

    There are 744.9 mi between Chicago O'Hare Intl and Montreal Pierre Elliott Trudeau Intl. Typically, this will take 2h 05m by plane in normal conditions.

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

    Prices for flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport refresh daily.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport.

  • What documentation or ID do you need to fly to Montreal Pierre Elliott Trudeau Intl Airport?

    The required travel and health documents for your Montreal Pierre Elliott Trudeau 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 Montreal Pierre Elliott Trudeau 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 Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport?

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

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

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $163Free CancellationRating
7.1
10,000 reviews
Search Air Canada flights
American AirlinesPriceFrom $192Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights

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

    United Airlines operates around 40 flights from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport every week. The average price of these flights found in the last 72 hours has been $382, but momondo users have found United Airlines deals from Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport from as low as $215 round-trip. United Airlines has been scored 7.4/10 in 8,929 reviews.

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

    American Airlines is also a popular choice for this route. American Airlines flight deals for Chicago O'Hare Intl Airport to Montreal Pierre Elliott Trudeau Intl Airport start from as low as $192 round-trip, depending on your selected dates, with average American Airlines deals seen on momondo around $405. American Airlines operates 14 flights to Montreal Pierre Elliott Trudeau Intl Airport from Chicago O'Hare Intl Airport in an average week. Users have rated it 7.2/10 across 10,000 reviews.

Traveling to a place near Montreal?

Book flights to Montreal if you plan to visit one of these locations
Laval
Longueuil
Dorval
Brossard
Magog
Trois-Rivières
Saint-Sauveur
Sherbrooke
Cornwall
Boucherville
Bromont
Drummondville
Montebello
Saint-Jean-sur-Richelieu
Sutton
North Hatley

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Montreal from Chicago.

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

Flights from Chicago to Montreal 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 Chicago to Montreal?

Once you have performed a search for Chicago to Montreal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Chicago to Montreal flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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