Cheap flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois from C$ 254
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 30/10. 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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Not ready to book? to track prices.Air Canada 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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Fly from
Fly to
Route
Depart
Return
MontrealChicago
YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl
YULORD
Montreal Pierre Elliott Trudeau Intl
Fri 20/11
4:50 p.m.-8:17 p.m.
1 stop4h 27m
Chicago O'Hare Intl
Fri 27/11
7:05 a.m.-11:52 a.m.
1 stop3h 47m
MontrealChicago
YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl
YULORD
Montreal Pierre Elliott Trudeau Intl
Fri 6/11
11:10 a.m.-3:52 p.m.
1 stop5h 42m
Chicago O'Hare Intl
Sun 15/11
7:05 a.m.-10:17 a.m.
Nonstop2h 12m
MontrealChicago
YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl
YULORD
Montreal Pierre Elliott Trudeau Intl
Thu 5/11
11:10 a.m.-3:38 p.m.
1 stop5h 28m
Chicago O'Hare Intl
Mon 9/11
1:55 p.m.-7:46 p.m.
1 stop4h 51m
MontrealChicago
YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl
YULORD
Montreal Pierre Elliott Trudeau Intl
Sun 8/11
12:50 p.m.-8:30 p.m.
1 stop8h 40m
Chicago O'Hare Intl
Thu 12/11
2:44 p.m.-11:27 p.m.
1 stop7h 43m
MontrealChicago
YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl
YULORD
Montreal Pierre Elliott Trudeau Intl
Wed 25/11
6:00 a.m.-8:00 a.m.
Nonstop3h 00m
Chicago O'Hare Intl
Wed 25/11
5:54 p.m.-9:17 p.m.
Nonstop2h 23m
MontrealChicago
YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl
YULORD
Montreal Pierre Elliott Trudeau Intl
Wed 25/11
6:00 a.m.-8:00 a.m.
Nonstop3h 00m
Chicago O'Hare Intl
Thu 26/11
10:37 a.m.-2:00 p.m.
Nonstop2h 23m
MontrealChicago
YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl
YULORD
Montreal Pierre Elliott Trudeau Intl
Wed 28/10
5:34 p.m.-7:19 p.m.
Nonstop2h 45m
Chicago O'Hare Intl
Tue 10/11
8:08 a.m.-11:25 a.m.
Nonstop2h 17m
MontrealChicago
YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl
YULORD
Montreal Pierre Elliott Trudeau Intl
Thu 5/11
12:10 p.m.-2:15 p.m.
Nonstop3h 05m
Chicago O'Hare Intl
Mon 9/11
8:08 a.m.-11:25 a.m.
Nonstop2h 17m
MontrealChicago
YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl
YULORD
Montreal Pierre Elliott Trudeau Intl
Tue 22/12
9:45 a.m.-5:40 p.m.
1 stop8h 55m
Chicago O'Hare Intl
Thu 31/12
12:15 p.m.-7:06 p.m.
1 stop5h 51m
MontrealChicago
YUL Montreal Pierre Elliott Trudeau Intl - ORD Chicago O'Hare Intl
YULORD
Montreal Pierre Elliott Trudeau Intl
Mon 21/12
9:45 a.m.-5:40 p.m.
1 stop8h 55m
Chicago O'Hare Intl
Tue 29/12
12:15 p.m.-7:06 p.m.
1 stop5h 51m
See travel insights to Illinois from
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, April 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$ 392. If you don’t want to visit Illinois in April, then you should wait until February to fly from Montreal Pierre Elliott Trudeau Intl Airport, when ticket prices are also cheap, with an average price of C$ 407.
What is the cheapest day to depart on your flight to Illinois?
According to our data, Thursday is the cheapest day to fly to Illinois from Montreal Pierre Elliott Trudeau Intl Airport. The lowest ticket price found for a Thursday departure recently was C$ 704. 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$ 1,019.
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$ 754. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,028 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 from Montreal Pierre Elliott Trudeau Intl Airport 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$ 517 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$ 326 on momondo.
What cabin class options are available on Montreal Pierre Elliott Trudeau Intl Airport to Illinois flights?
There are 4 cabin classes available to choose from on Montreal Pierre Elliott Trudeau Intl Airport 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?
Delta, United Airlines, and Porter Airlines are the most popular carriers operating from Montreal Pierre Elliott Trudeau Intl to Illinois
Which airlines fly to Illinois?
Air Canada, United Airlines and Porter 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 75% of people opting to fly with this airline when travelling to Illinois. Keep in mind that there are 4 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?
31 flights are operational daily from Montreal Pierre Elliott Trudeau Intl Airport to Illinois as of October 2026. The most popular departure time for this route is 9:00a.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 217 per week as of October 2026. The most frequent departure day is Tue, with 15% 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
Frequently asked questions about flying from Montreal Pierre Elliott Trudeau Intl Airport to Illinois
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 October 2026, there are 4 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) (29.18% of total bookings). The next most popular plane models are Embraer 175 (17.58%), Airbus A220-300 (14.48%), and Boeing 737 MAX 8 (13.98%).
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$ 249 | Free Cancellation | Rating 8.0 467 reviews | |||
| PriceFrom C$ 266 | Free Cancellation | Rating 7.4 10,292 reviews | |||
| PriceFrom C$ 272 | Free Cancellation | Rating 7.0 12,126 reviews | |||
| PriceFrom C$ 330 | Free Cancellation | Rating 7.1 11,731 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.