$146 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 3/18. 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.
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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
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Best Illinois Flight Deals from Montreal

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

Chicago
Chicago1 stop$233
St. Louis
St. Louis1 stop$301

Good to know

Low season

February

High season

August

Cheapest flight

$146
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly and prices are also 6% lower on average.
Flight from Montreal to Chicago O'Hare Airport

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

Insights shared by verified travelers 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 travelers 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.

See more FAQs

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 $200 one-way - $340 round-trip
  • Book at least 2 weeks before departure in order to get a below-average price.
  • High season is considered to be January, February and March. The cheapest month to fly from Montreal is March.
  • Morning departure is around 4% more expensive than an evening flight, on average*.
See more tips
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

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.
7.9
Porter AirlinesOverall score based on 276 reviews
8.7Crew
7.6Food
8.0Comfort
8.2Boarding
6.9Entertainment
Airline reviews

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.

4.0 OkayJason, Feb 2025YHZ - YUL
Read more Porter Airlines reviews

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.

We were given a complimentary seat upgrade which was so unexpected but so lovely!

Porter was excellent. Boarding was a breeze. The seats were a little uncomfortably but the overall trip was excellent.

Only packaged snacks were served. It was a flight at lunchtime and a hot meal would have been a great.

Reserve check-in was very slow compared to regular check-in. Internet was slow

Very modern plane. Good seat spacing. Meals were good. Screens had tons of movies and worked

There's just no way to sit fully upright and comfortably in these seats. There needs to be 2 more inches of room, and that's not something that only one person on the flight needs - the whole flight needs 2 more inches of room. If that means you sell 6 less seats, so be it. It's too close for anyone. Forcing people to pay for "premium" economy just to get "barely enough space to breathe" isn't really an answer to that.

The crew were very nice. The Chocolate is good and v there’s no entertainment. Thanks

The crew were very nice. I would have appreciated a pillow for comfort. I had a special meal that was sloppy, but the salad was great. Thanks

The plane was in Moline all night. Consequently, we assumed an on time departure at 8:15am. Unfortunately, and as is the normal case with United in Moline, we departed 2.5 hours late. When the crew came, it was discovered that there was very little heat in the plane. Seems this should have been checked hours before the crew arrived. Then when we boarded and the plane was to be de-iced, the United de-icing truck was not working! We awaited the American Airlines truck. All of this caused us to miss our connection in Chicago. My suggestion is never take United Airlines flight from Moline. We have been disappointed 80% of the time and have vowed to not take United again from Moline.

Flight was delayed two hours. No snacks and no tv screens. My bag got stuck in Chicago

The aircrew was solid, the flight was chill, I had no issues. The gate agent was not the best. I was trying to use a military bag upgrade to move my bag from under the seat to the overhead bins and he told me there’s no overhead bins on the plane, argued with me why booking put a military member in basic economy (I don’t really understand this) and made it an issue to even try to help me stating I’d have to call reservations to get a bag upgrade. When every other agent with United can add it at the gate, this man couldn’t be bothered.

lots of delays the crew were unclear about where to pick up my carry-on, which they took from me to check in on the plane.

They needed people to check a bag, they did check my bag and I had to wait 10 minutes after the flight to get it it wasn’t too bad

HORRIBLE WITH THEIR WEBSITE!!! WORST WEBSITE IN THE WHOLE AIRLINE INDUSTRY

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.

Had to wait on pilot and crew to depart and had to wait to arrive at the gate because they only had 2 crews working. Delays, delays....Planes just keep getting smaller and tighter and they nickle and dime for everything. When will an airline actually wake up and make flying more enjoyable?

Seating was horrible. Small seats. Access to flight information and extras very iser unfriendly. Kept losing internet after paying for it. Staff in madison was as unprofessional and unhelpful.

Delayed due to no crew. On a major holiday travel day.

Other than being delayed 5.5 hours and having to get a hotel because I missed my connecting flight, it was an okay flight. No in-flight Wi-Fi or entertainment.

It was nice being on a flight that had working wifi. The boarding was quick - why don’t all airlines have small boarding groups window to aisle? Makes so much sense!!! I was disappointed to be the first person stopped to have to gate check my carryon. Especially when there was plenty of overhead space at the back! But I get it…keeps it moving. Crew was nice.

The flight from Buffalo to Chicago was on an older and smaller plane. Seating was tight. Looking closely at the interior of the aircraft there were definitely signs of aging and wear.

The flight encountered a delay exceeding 4 hours. The food voucher issued was valued at $12, insufficient to cover our meal expenses. Consequently, I was unable to take my medication, leading to a drop in blood sugar levels and exacerbating my anxiety.

Airplane was cold. Flight attendants were rude. Phone charger did not work. No food available.

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.

It was so bad experience they wanted just charged passengers for any reason.

Delta was great. West Jet was not. I booked my flight in Sept (well over two months ago), but was told there were 2 reservations and NO tickets for me, my husband and 16mo daughter. We were unable to go ahold of West Jet over the phone and the kiosk was unhelpful so we had to buy completely new tickets in order to get home that day. I’ve called West Jet twice since and sat on the phone for over an hour without speaking to any representatives.

The seats were some of the most uncomfortable I've ever been on. Other similar-sized jets with the same seating arangement have been far more comfortable. This interfered with sleeping, so it was a big issue. Moreover, the lack of a digital boarding pass forced an extra trip to print one, and the overall digital experience was poor. WestJet's website could not figure out one of my flights existed.

The seats were some of the most uncomfortable I've ever been on. Other similar-sized jets with the same seating arangement have been far more comfortable. This interfered with sleeping, so it was a big issue.

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.

I have flown on many airlines all over the world, and this plane flight was the most uncomfortable I have ever experienced.

Flight from Minneapolis to Montreal was easy, breezy. Small plane, so not much overhead space. The seats felt slightly smaller than normal, but not uncomfortable for my body type. No screens in the seats for watching movies or shows, but I don't mind, I'm more of a reader.

Excellent overall experience. Seats were comfortable and ample leg room.

Con: Travelers shouldn't have to pay a fee for first checked bag, in any fare class. Pro: Plane was new and comfortable, even for the seats that didn't cost extra.

Wheelchair help is not reliable & chaotic. No food and minimal liquids for a flight at 6;25.

I wasnt able to choose my seat during booking my flight _months_ in advance and then when I checked in for my flight, I _still_ couldnt choose my seat. I was finally able to get a seat when I got to the gate, and they stuck me in a middle seat next to a jerk. This was my return flight, and on my departing flight I was able to choose my seat, so I dont understand what the issue was but it was very annoying and a miserable ~6.5 hours on the return flight.

Gate changed twice, boarding late. However, there was more than usual leg room. Crew was fine. No entertainment due to computer problem.

Book cheap flights from Montreal to Illinois

Recent round-trip flight deals

 
These are the cheapest round-trip flights from Montreal to Illinois found on KAYAK in the last 72 hours.
4/15Tue
1 stopPorter Airlines
4h 30mYUL-MDW
4/19Sat
1 stopPorter Airlines
4h 07mMDW-YUL
$233
3/27Thu
1 stopPorter Airlines
5h 50mYUL-MDW
3/30Sun
1 stopPorter Airlines
4h 35mMDW-YUL
$235
4/25Fri
nonstopUnited Airlines
2h 40mYUL-ORD
5/2Fri
nonstopUnited Airlines
2h 15mORD-YUL
$246
5/8Thu
1 stopAir Canada
4h 48mYUL-ORD
5/11Sun
nonstopAir Canada
2h 15mORD-YUL
$253
3/21Fri
nonstopUnited Airlines
2h 57mYUL-ORD
4/23Wed
nonstopUnited Airlines
2h 16mORD-YUL
$255
3/21Fri
1 stopAir Canada
5h 06mYUL-ORD
3/24Mon
1 stopAir Canada
4h 23mORD-YUL
$260
4/5Sat
nonstopAmerican Airlines
2h 35mYUL-ORD
4/7Mon
1 stopAmerican Airlines
12h 20mORD-YUL
$292
4/5Sat
nonstopAmerican Airlines
2h 35mYUL-ORD
4/7Mon
nonstopAmerican Airlines
2h 19mORD-YUL
$306
6/15Sun
1 stopWestJet
11h 33mYUL-MDW
6/21Sat
1 stopWestJet
18h 13mMDW-YUL
$343
3/21Fri
2 stopsWestJet
9h 17mYUL-ORD
3/24Mon
1 stopWestJet
4h 11mORD-YUL
$345

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Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Montreal to Illinois found on KAYAK in the last 72 hours.
3/18Tue
2 stops
17h 34mYUL-ORD
$146
3/26Wed
1 stopPorter Airlines
4h 30mYUL-MDW
$148
4/22Tue
nonstopUnited Airlines
2h 47mYUL-ORD
$150
4/2Wed
nonstopAir Canada
2h 32mYUL-ORD
$153
4/17Thu
nonstopUnited Airlines
2h 32mYUL-ORD
$158
4/3Thu
nonstopAir Canada
2h 40mYUL-ORD
$170
3/21Fri
2 stopsAmerican Airlines
10h 12mYUL-ORD
$175
3/12Wed
1 stopAmerican Airlines
6h 16mYUL-ORD
$216
7/7Mon
1 stopWestJet
5h 43mYUL-ORD
$222
8/1Fri
1 stopWestJet
28h 03mYUL-MDW
$222

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Last minute flights from Montreal to Illinois

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Montreal to Illinois that are departing in the next 10 days.
2/22Sat
multi-stopWestJet
12h 43mYUL-MDW
2/24Mon
multi-stopWestJet
9h 14mMDW-YUL
$362
2/24Mon
multi-stopPorter Airlines
6h 20mYUL-MDW
3/3Mon
multi-stopPorter Airlines
4h 30mMDW-YUL
$456
2/24Mon
multi-stopAir Canada
6h 06mYUL-ORD
3/3Mon
nonstopAir Canada
2h 12mORD-YUL
$481
2/24Mon
multi-stopAir Canada
6h 06mYUL-ORD
3/3Mon
multi-stopAir Canada
5h 48mORD-YUL
$488
2/24Mon
multi-stop
20h 16mYUL-ORD
3/3Mon
multi-stop
8h 55mORD-YUL
$516
2/22Sat
multi-stop
24h 22mYUL-ORD
2/24Mon
multi-stop
17h 57mORD-YUL
$521
2/22Sat
multi-stop
11h 04mYUL-ORD
2/24Mon
multi-stop
17h 57mORD-YUL
$522
2/22Sat
nonstopUnited Airlines
2h 57mYUL-ORD
2/24Mon
multi-stopUnited Airlines
4h 59mORD-YUL
$554
2/24Mon
nonstopUnited Airlines
2h 35mYUL-ORD
3/3Mon
nonstopUnited Airlines
2h 19mORD-YUL
$917
2/23Sun
multi-stopDelta
5h 59mYUL-STL
2/24Mon
multi-stopDelta
9h 04mSTL-YUL
$961

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

Information on your arrival and departure airports

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