Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Illinois
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United Airlines flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois
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How to get the cheapest flight ticket from Montreal Pierre Elliott Trudeau Intl Airport 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, September is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 386. If you don’t want to visit Illinois in September, then you should wait until August to fly from Montreal Pierre Elliott Trudeau Intl Airport, when ticket prices are also cheap, with an average price of C$ 413.
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 Pierre Elliott Trudeau Intl Airport. 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 Pierre Elliott Trudeau Intl Airport 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 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 Illinois flight route?
Fly from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Intl for the best Montreal Pierre Elliott Trudeau Intl - 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 Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport for as low as C$ 286 on momondo.
What cabin class options are available on Montreal Pierre Elliott Trudeau Intl to Illinois flights?
There are 4 cabin classes available to choose from on Montreal Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl to Illinois?
Air Canada, Porter Airlines, and American Airlines are the most popular carriers operating from Montreal Pierre Elliott Trudeau Intl 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 Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Illinois on average per day?
27 flights are operational daily from Montreal Pierre Elliott Trudeau Intl Airport to Illinois as of July 2025. The most popular departure time for this route is 6:00a.m., with 47% of flights per day taking off at noon.
How many flights depart from Montreal Pierre Elliott Trudeau Intl Airport to Illinois on average per week?
The number of flights available between Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Illinois flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Illinois?
Prices for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois are refreshed on a daily basis.
How many operators does momondo search for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?
As of July 2025, there are 5 operators available to choose from for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.
How old do you have to be to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?
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 Montreal Pierre Elliott Trudeau Intl Airport 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 Pierre Elliott Trudeau Intl Airport to Illinois?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Montreal Pierre Elliott Trudeau Intl Airport to Illinois is Embraer 175 (Enhanced Winglets) (27.24% of total bookings). The next most popular plane models are Embraer 175 (17.25%), Boeing 737 MAX 8 (12.61%), and Airbus A321-100/200 (8.08%).
Best airlines flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois
Compare and see reviews for airlines that fly from Montreal Pierre Elliott Trudeau Intl Airport 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 9,678 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?
It is quick and easy to find Montreal to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.
Can I find flights from Montreal to Illinois with flexible booking policies on momondo?
Flights from Montreal to Illinois 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 Illinois?
Once you have performed a search for Montreal to Illinois 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 Montreal to Illinois right now. Can momondo alert me if prices change?
Price alerts on flights to Illinois 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.