Cheap flights from Montreal to Illinois from C$ 129
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 Illinois departing on 7/9. 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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American Airlines flights from Montreal to Illinois
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How to get the cheapest flight ticket from Montreal to Illinois
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 Illinois?
In general, March is the cheapest month to fly from Montreal to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 403. If you don’t want to visit Illinois in March, then you should wait until May to fly from Montreal, when ticket prices are also cheap, with an average price of C$ 427.
What is the cheapest day to depart on your flight to Illinois?
According to our data, Friday is the cheapest day to fly to Illinois from Montreal. The lowest ticket price found for a Friday departure recently was C$ 737. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Illinois is Monday, with ticket prices averaging around C$ 1,011.
What is the cheapest time of day to depart on your flight to Illinois?
Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Montreal to Illinois during this time can be as low as C$ 789. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 890 on average. Flights to Illinois 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 Illinois flight route?
Fly from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl for the best Montreal - Illinois flight prices
How far in advance should I book a flight to Illinois?
You are more likely to see cheaper flights to Illinois from Montreal when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around C$ 527 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Montreal for as low as C$ 286 on momondo.
What cabin class options are available on Montreal to Illinois flights?
There are 4 cabin classes available to choose from on Montreal to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
What is the cheapest airline that flies from Montreal to Illinois?
Air Canada, Porter Airlines, and American Airlines are the most popular carriers operating from Montreal to Illinois
Which airlines fly to Illinois?
Air Canada, Porter Airlines and United Airlines are the top three most popular airlines that fly to Illinois from Montreal according to our data. Air Canada is the first choice among our users, with 73% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.
How many flights depart from Montreal to Illinois on average per day?
The number of flights available between Montreal and Illinois is 27 per day as of July 2025. The most frequent departure time is 6:00a.m., with 47% of daily flights leaving at noon.
How many flights depart from Montreal to Illinois on average per week?
The number of flights available between Montreal and Illinois is 195 per week as of July 2025. The most frequent departure day is Wed, with 17% of weekly flights leaving on this day.
Cheap Montreal to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Montreal to Illinois
Best price found | C$ 129 |
|---|---|
Fastest flight time | 2h 31m |
Direct flights | Every day |
Airports in Illinois | 3 airports |
When did momondo last update prices for flights from Montreal to Illinois?
Prices for flights from Montreal to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Montreal to Illinois?
There are 5 operators available for flights from Montreal to Illinois as of July 2025.
How old do you have to be to fly from Montreal to Illinois?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Montreal to Illinois.
What documentation or ID do you need to fly to Illinois?
The travel and health documents required for your trip to Illinois can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Illinois. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Montreal to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Montreal to Illinois is Embraer 175 (Enhanced Winglets), representing 27.24% of all bookings. The subsequent popular models are Embraer 175 at 17.25%, Boeing 737 MAX 8 at 12.61%, and Airbus A321-100/200 at 8.08%.
Best airlines flying from Montreal to Illinois
Compare and see reviews for airlines that fly from Montreal to Illinois with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom C$ 264 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom C$ 294 | Free Cancellation | Rating 8.0 298 reviews | |||
| PriceFrom C$ 302 | Free Cancellation | Rating 7.1 9,681 reviews | |||
| PriceFrom C$ 351 | Free Cancellation | Rating 7.4 8,861 reviews | |||
| PriceFrom C$ 446 | Free Cancellation | Rating 7.2 2,917 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Montreal to Illinois?
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 Illinois from Montreal.
Can I find flights from Montreal to Illinois with flexible booking policies on momondo?
Yes. All flights to Illinois 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 Illinois?
momondo provides multiple filters to help you find the best flight to Illinois from Montreal. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Montreal to Illinois right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Montreal to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.