Cheap flights from Montreal to Chicago from C$ 140
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 3/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
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
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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, 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$ 409. 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$ 449.
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$ 745. 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$ 1,008.
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$ 801. 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$ 855 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 17 weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around C$ 552 when searching 17 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$ 421 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 9% 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 May 2025, prices for Montreal to Chicago O'Hare Intl Airport flights are approximately 17% 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 United Airlines 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 88% 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 day?
As of May 2025, there are 23 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 50% of flights taking off at noon.
How many flights depart from Montreal to Chicago O'Hare Intl Airport on average per week?
As of May 2025, 162 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 Wed, with 17% 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
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 May 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) (27.99% of total bookings). The next most popular plane models are Embraer 175 (17.37%), Boeing 737 MAX 8 (9.47%), and Airbus A220-300 (8.66%).
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 (91% of total bookings). The next most popular airline is United Airlines (9%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom C$ 349 | Free Cancellation | Rating 7.4 8,745 reviews | |||
| PriceFrom C$ 354 | Free Cancellation | Rating 7.0 9,393 reviews | |||
| PriceFrom C$ 381 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom C$ 442 | Free Cancellation | Rating 7.2 2,848 reviews |
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 38 flights on this route every week with an average price of C$ 350. 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 3 times each week, with ticket deals ranging from C$ 275 to C$ 363. Price data is based on momondo searches in the last 72 hours.
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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.