C$ 139 Find Cheap Flights from Montreal to Illinois

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Montreal to Illinois departing on 14/9. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Illinois

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Illinois, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Illinois, as well as popular online travel agencies
Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 25% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Useful Info
Flights Deals

Best Illinois Flight Deals from Montreal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Chicago
ChicagodirectC$ 205
Chicago
ChicagodirectC$ 205

Cheap Flights from Montreal to Illinois

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Montreal to Illinois that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Montreal to Illinois

Fri, 5 Sep - Mon, 8 Sep
Air Canada Logo
6:40 p.m. - 8:11 p.m.YUL-ORD
2h 31mdirect
Air Canada Logo
10:40 a.m. - 1:54 p.m.ORD-YUL
2h 14mdirect
C$ 205Air Canada
Find Deal
Tue, 23 Sep - Fri, 26 Sep
Air Canada Logo
8:20 a.m. - 9:51 a.m.YUL-ORD
2h 31mdirect
Air Canada Logo
10:40 a.m. - 1:54 p.m.ORD-YUL
2h 14mdirect
C$ 206Air Canada
Find Deal
Tue, 30 Sep - Thu, 2 Oct
American Airlines Logo
5:15 p.m. - 6:50 p.m.YUL-ORD
2h 35mdirect
American Airlines Logo
9:48 a.m. - 3:21 p.m.ORD-YUL
4h 33m1 stop
C$ 257American Airlines
Find Deal
Fri, 3 Oct - Wed, 8 Oct
American Airlines Logo
5:15 p.m. - 6:50 p.m.YUL-ORD
2h 35mdirect
American Airlines Logo
7:05 a.m. - 1:25 p.m.ORD-YUL
5h 20m1 stop
C$ 278American Airlines
Find Deal
Thu, 7 Aug - Sun, 10 Aug
Porter Airlines Logo
1:10 p.m. - 4:24 p.m.YUL-MDW
4h 14m1 stop
Porter Airlines Logo
5:20 p.m. - 10:15 p.m.MDW-YUL
3h 55m1 stop
C$ 301Porter Airlines
Find Deal
Thu, 24 Jul - Mon, 28 Jul
Porter Airlines Logo
1:10 p.m. - 4:24 p.m.YUL-MDW
4h 14m1 stop
Porter Airlines Logo
5:20 p.m. - 10:15 p.m.MDW-YUL
3h 55m1 stop
C$ 304Porter Airlines
Find Deal
Fri, 11 Jul - Sun, 13 Jul
United Airlines Logo
3:41 p.m. - 9:36 p.m.YUL-ORD
6h 55m1 stop
United Airlines Logo
2:07 p.m. - 5:26 p.m.ORD-YUL
2h 19mdirect
C$ 418United Airlines
Find Deal
Thu, 17 Jul - Wed, 23 Jul
United Airlines Logo
6:15 a.m. - 7:59 a.m.YUL-ORD
2h 44mdirect
United Airlines Logo
7:15 a.m. - 10:40 a.m.ORD-YUL
2h 25mdirect
C$ 427United Airlines
Find Deal
Sat, 30 Aug - Tue, 2 Sep
WestJet Logo
6:45 a.m. - 7:19 p.m.YUL-ORD
13h 34m2 stops
WestJet Logo
8:25 a.m. - 11:16 p.m.ORD-YUL
13h 51m1 stop
C$ 485WestJet
Find Deal
Fri, 3 Oct - Wed, 8 Oct
WestJet Logo
6:45 a.m. - 9:44 p.m.YUL-MDW
15h 59m2 stops
WestJet Logo
1:05 p.m. - 12:37 a.m.MDW-YUL
10h 32m2 stops
C$ 485WestJet
Find Deal
Useful Info

KAYAK's insights & trends for Montreal to Illinois flights

Get data-powered insights and trends into flights from Montreal to Illinois to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Montreal Pierre Elliott Trudeau Intl Airport to Illinois flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois.

The cheapest ticket to Illinois from Montreal Pierre Elliott Trudeau Intl Airport found in the last 72 hours was to Chicago, at C$ 345 round-trip. The most popular route is from Montreal Pierre Elliott Trudeau Intl Airport (YUL) to Chicago O'Hare Intl Airport (ORD), and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 345.

Can I save money by flying with a layover from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of C$ 606, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Montreal Pierre Elliott Trudeau Intl Airport to Illinois?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois is September, when tickets cost C$ 396 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is C$ 480 and C$ 469 respectively.

What’s the cheapest day of the week to fly from Montreal to Illinois?

The average price of all round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Montreal to Illinois, look for departures on Thursdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Illinois, Thursday is the cheapest day to fly and Tuesday is the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Montreal Pierre Elliott Trudeau Intl Airport to Illinois, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 24 weeks before departure.


Good to know

Low seasonFebruary
High seasonAugust
Cheapest flightC$ 139
Best time to beat the crowds (2% less expensive on average)
Most popular time to fly and prices are also 5% lower on average.
Flight from Montreal Pierre Elliott Trudeau Intl to Chicago O'Hare Airport

Flights from Montreal to Illinois: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Montreal to Illinois 
Steven AnthonyFlew with United AirlinesYUL-ORDAug 2024
Don't take the 6am flight. Airport security and customs only open at 430am. So if you show up the recommended 3 hours before, you're waiting in line for nothing
Verified travelerFlew with United AirlinesYUL-ORDApr 2024
Come prepared with your own entertainment as the flight did not offer in flight entertainment

FAQs - booking Illinois flights

  • How does KAYAK find such low prices on flights from Montreal to Illinois?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Montreal to Illinois.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Montreal to Illinois?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Montreal to Illinois is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Montreal to Illinois?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Montreal to Illinois with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Montreal to Illinois?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Montreal to Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Illinois?

    The cheapest time of day to fly to Illinois is generally in the evening, when round-trip flights cost C$ 579 on average. Morning departures are around 3% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the afternoon, which is peak travel time and where the average cost of a ticket is C$ 636.

Top tips for finding cheap flights to Illinois

  • Looking for a cheap flight? 25% of our users found tickets from Montreal to the following destinations at these prices or less: Chicago C$ 313 one-way - C$ 498 round-trip

Top 5 airlines serving from Montreal to Illinois

 
See real verified KAYAK customer reviews for airlines flying from Montreal to Illinois. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Montreal to Illinois? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Porter AirlinesOverall score based on 288 reviews
7.0Entertainment
8.2Boarding
8.1Comfort
7.6Food
8.7Crew
Airline reviews

I love the 2 seats per row. More room. The crew were excellent.

10.0 ExcellentAnonymous, Apr 2025YHZ - YOW
Read more Porter Airlines reviews

I love the 2 seats per row. More room. The crew were excellent.

It was amazing although they did bump us up to the front which gave us more leg room and a meal. The service was great! The staff were friendly. :)

Overall very good... staff were friendly and helpful. boarding was good for the most part, but a little hard to get our carry-on bags on there.... I think people should be directed to keep their coats and small bags with them until all the carry-ons are loaded, and then, if there is space, they can put their small bags and coats up top.. makes it much easier to put baggage up. i loved the internet feature, but the entertainment was not there unless you have your own Netflix or similar platform. My chair did not recline, which was very annoying, and the arms won't go up near the isle, which makes it tough to get in and out of the seat.

Staff were excellant. Only snacks served. Some turbulence so we were offered Free beer or wine.

The staff is always great. Just the fact that our flight was the only one delayed from Halifax when all other carries were still flying. It happen a year ago out of Toronto as well. All others were flying but our flight got cancelled 1 hr before the time of departure.

The only issue had when i mentioned about comfort was the man beside me was on the larger side and took about 1/3 of my seat where i was pressed against the wall/window of the plane for the trip.

The check-in staff, boarding staff, and flight crew were all very friendly. Really miss the Porter lounge in Ottawa.

Thanks for giving a beer to everyone in the seat infront of me and then telling me that I can’t have one because they are going to land. I guess I need to pay for a seat and then pick one in the very front of the plane

The flight was delayed by more than one hour. The terminal was consequently overcrowded and hot. We lost our car reservation and hit rush hour traffic in Boston, which added two hours stuck in traffic to our trip.

Awesome, the whole way through. Thank you, this is the new Canadian Airline benchmark.

It was fine, definitely older planes with no charging or anything. There’s no entertainment set up on board, but it is nice that they allow you to access the in flight entertainment from your phone without having to pay for the Wi-Fi and they do offer free texting.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

The schedule to Moline changed 5 times. The gate changed 6 times. That is a pathetic way to run an airline. No wonder that no one in our company flies on United Express to or from Moline. Changes happen most of the time. I learned my lesson on this trip…never again!

All flight attendants could benefit by taking an international flight on Qantas Airline. Qantas attendants are much more hospitable in every way. Much superior than and attendants on any US airline.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

Very nice and clean plane. Transit time between flights was tight though

So far so good but food and entertainment are not available for this flight

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

Overall poor for me I paid extra for seats with leg room and my regional flights exit row seats have less leg room then the others that's money that could have been saved and on my final flight home the flights air was not operating it was unbearably hot in the cabin I will be contacting United and filing a DOT complaint

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Not sure the logic of the boarding in Groups. I was loaded first on the aisle. Then the guy in the middle. Then the guy by the window. Constantly holding up the other people boarding behind them with us blocking the aisle and this happened in most of the other rows

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

Crew professional. Easy bag drop off. On time. Good entertainment.

Everything was great. Boarding, early departure, early arrival, and deplaning were smooth. Smooth flight.

Per usual, flight status, staff courtesy and professionalism were excellent

Everything was on time, we arrived early, everything worked well.

The only thing is if Wi-Fi is available after you land and taxi to the gate. It takes forever to get to the gate, and having the Wi-Fi continue would be great to bide the time at least 5 minutes before you arrive at the entrance. That is my only comment; otherwise, everything was good.

Late departure, so I missed connection in Detroit. But Delta gave me a great hotel & breakfast. Just sorry I could not get anything from my checked baggage.

Crew was friendly. Lost our luggage and told us it’d be in later in the evening of the day we returned. It was not. Still after 5 days have not received it.

Internet on both flights was sketchy. Thus in flight entertainment was non- existent on MN - Balrimote leg.

It took 30 minutes to check in with the Westjet rep. They didn’t have enough seats and she needed to make a call… I am always “randomly” selected to be checked at security. Their “randomly “ selection system may need some updating. They treat people like criminals. It is not appropriate behavior.

Will never book through you again. Very disappointed in the notices and action taken or provided when planes are rescheduled, enough to cause missed connections

Lost my luggage. Filed a report and there is no response. Received a phone call from another airline that said they had the bag and they did not know what to do with it

Very good over all , would have been nice to have entertainment on the flight

Absolutely the worst airline I have ever taken. They lost my baggage and told me my bag tags had been cancelled. When my bags arrived days later I had to pick them up at 3:15 am. My return flight was delayed another 6 hours and they broke my bag. Westjet does nothing to try and make it a better customer experience and all the customers services representatives I spoke with were useless and incompetent. Never flying westjet again.

it's all good nothing you can do make better 😌

Very old planes. Seats were not comfortable. Air was not on during the flight leading to incredibly stuffy conditions.

Received email saying that there won’t be a seat back entertainment screen and inflight WiFi would be available. But no WiFi both ways. Say it in the email.

Good, only discomfort was consistent turbulence through the 3 hour flight. Not sure if in companies control though.

Terrible. Flight was delayed for hours and we ended up arriving at our home at 4am after 20+ hours flying.

Flight was cancelled around 45 -1hr minutes before scheduled take off time due to mechanical issues we hadn’t even boarded yet. Had to reroute to Orlando so someone had to drive 2 1/2 to come and get me… the alternative was go through Toronto and get a later flight which didn’t work for my schedule. The flight attendants barely gave anyone a smile…not the same as flying when a client/passenger was important. Very disappointed. By the way I have never ever made a complaint online about any company with feedback…even when I probably should have. The only good experience was the boarding desk associates who were very professional and got me on another flight with my checked bags…very nice team.

Actually as my experience with air Canada from Canada to Newark it was crazy for me because it was a lot of delays which for me it shouldn’t be like that, but I was able to coup with it so that was my experience I hope next time they will do good on that thanks.

Mixed experienced. Nice staff. Spacious 787 better than cramped Airbus, though my seat was broken. The bad: Way overpriced ticket and charged for food despite 6 hr flight.

Very smooth flight and the crew members were very welcoming.

Super. Planes were clean. Flights were on time. boarding was smooth. Flight attendants were professional.

ground crew at Casablanca as well as at Montreal was not helpful at all. specially at Montreal airport, very rude .

The TSA people or whatever you call them were a bit rude- I asked why I had to take my shoes off bc I'm 75 and in the USA, I don't have to. The man didn't need to snap at me. It wasn't even busy! The plane was ok, a bit small for such a long flight, but I'm very familiar with the 737 used ( I fly it often between SFO and SAN) service was ok-nothing special. If I drank alcohol I guess I would be happy with free choices. the plane was HOT and even the FA commented on it. They tried to get it cooler, but it never happened.

Everything you need to know for your flight from Montreal to Illinois

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.