C$ 188 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 19/4. 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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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.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Montreal to Illinois.
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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 stopC$ 308

Cheap Flight Deals from Montreal to Illinois (YUL-USIL)

 
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.

Recent round-trip flight deals from Montreal to Illinois

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Montreal to Illinois.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
6:50 a.m. - 12:00 p.m.YUL-MDW
6h 10m1 stop
11:15 a.m. - 4:47 p.m.MDW-YUL
4h 32m1 stop
C$ 308Porter Airlines
Find Deal
Sat, 19 Apr - Wed, 23 Apr
11:50 a.m. - 4:40 p.m.YUL-MDW
5h 50m1 stop
9:40 a.m. - 4:00 p.m.MDW-YUL
5h 20m1 stop
C$ 310Porter Airlines
Find Deal
Wed, 16 Apr - Mon, 5 May
1:15 p.m. - 2:55 p.m.YUL-ORD
2h 40mdirect
8:40 a.m. - 11:55 a.m.ORD-YUL
2h 15mdirect
C$ 328Air Canada
Find Deal
Sat, 10 May - Sat, 17 May
1:10 p.m. - 5:24 p.m.YUL-ORD
5h 14m1 stop
8:40 a.m. - 11:55 a.m.ORD-YUL
2h 15mdirect
C$ 340Air Canada
Find Deal
Sat, 10 May - Sat, 17 May
1:15 p.m. - 2:55 p.m.YUL-ORD
2h 40mdirect
7:00 a.m. - 10:28 a.m.ORD-YUL
2h 28mdirect
C$ 350United Airlines
Find Deal
Wed, 30 Apr - Sun, 4 May
6:20 p.m. - 8:00 p.m.YUL-ORD
2h 40mdirect
6:00 a.m. - 11:45 a.m.ORD-YUL
4h 45m1 stop
C$ 362United Airlines
Find Deal
Tue, 29 Apr - Thu, 1 May
12:30 p.m. - 2:05 p.m.YUL-ORD
2h 35mdirect
8:30 p.m. - 9:50 a.m.ORD-YUL
12h 20m1 stop
C$ 410American Airlines
Find Deal
Fri, 25 Apr - Fri, 2 May
7:29 a.m. - 9:21 p.m.YUL-ORD
14h 52m1 stop
8:25 a.m. - 11:44 a.m.ORD-YUL
2h 19mdirect
C$ 428American Airlines
Find Deal
Sat, 19 Apr - Sun, 20 Apr
12:45 p.m. - 9:22 a.m.YUL-ORD
21h 37m1 stop
7:35 p.m. - 11:09 p.m.ORD-YUL
26h 34m1 stop
C$ 455WestJet
Find Deal
Fri, 5 Sep - Mon, 8 Sep
6:45 a.m. - 9:20 p.m.YUL-ORD
15h 35m2 stops
7:59 p.m. - 5:40 p.m.ORD-YUL
20h 41m1 stop
C$ 468WestJet
Find Deal
Fri, 9 May - Mon, 12 May

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$ 364 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$ 364.

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

The average price for all round-trip flights from Montreal Pierre Elliott Trudeau Intl Airport to Illinois depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
The cheapest time of day to fly to Illinois is generally in the evening, when round-trip flights cost C$ 583 on average. Morning departures are around 4% more expensive than evening flights, on average. The most expensive time of day to fly to Illinois is generally at night, which is peak travel time and where the average cost of a ticket is C$ 659.

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.
Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at C$ 1,866 on average.

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$ 437 (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$ 502 and C$ 501 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, Sunday 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 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low season

February

High season

August

Cheapest flight

C$ 188
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly and prices are also 4% lower on average.
Flight from Montreal to Chicago Midway 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.

See more FAQs

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
8.0Comfort
6.9Entertainment
7.6Food
8.7Crew
8.2Boarding
Airline reviews

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

8.0 ExcellentLouise, Mar 2025YYZ - YOW
Read more Porter Airlines reviews

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.

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.

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

It was my first time with United Airlines and I would say it was very good experience and best of all the flights were on time. Will definitely fly with United Airlines next time.

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.

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.

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.

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.

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.

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.

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.

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

Information on your arrival and departure airports

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