C$ 80 Find Cheap Flights from Illinois to Ontario

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Low seasonJanuary
High seasonJuly
Cheapest flightC$ 80
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly and prices are also 6% lower on average.
Flight from Chicago to Montreal

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

Insights shared by verified travellers who flew the route from Illinois to Ontario 
Verified travelerFlew with Air CanadaORD-YOWNov 2024
Ottawa, as a small airport is easiest to navigate! Overhead baggage compartments seem to be smaller, and on every flight they seem to need travellers to volunteer to put carryons in checked luggage instead.
Verified travelerFlew with Porter AirlinesMDW-YTZSep 2024
Please start bags check-in at least 2.5 hour before flight and finish at 30 min before flight.
Verified travelerFlew with United AirlinesORD-YOWJan 2024
I always expect issues with United but there doesn't seem to be another airline to use. Advice: Give yourself and extra day to get anywhere - don't be in a hurry to get home either.

FAQs for booking flights from Illinois to Ontario

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

    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 Illinois to Ontario.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Ontario 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 Illinois to Ontario?

    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 Illinois to Ontario 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 Illinois to Ontario?

    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 Illinois to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Ontario?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Ontario is Toronto Island Airport (YTZ), with an average flight price of C$ 143.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Saturday when round-trip tickets can be as cheap as C$ 387. On the other hand, the most expensive day to fly is Sunday, when round-trip prices are C$ 547 on average.

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

    The cheapest time of day to fly to Ontario is generally at night, when round-trip flights cost C$ 294 on average. Morning departures are around 5% more expensive than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is C$ 342.

  • What is the cheapest flight to Ontario?

    The cheapest ticket to Ontario from Illinois found in the last 72 hours was to Toronto Island Airport, at C$ 81 round-trip. The most popular route is Chicago Midway Airport (MDW) to Toronto Island Airport (YTZ) and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 81.

  • What is the cheapest month to fly from Illinois to Ontario?

    The cheapest month for flights from Illinois to Ontario is March, when tickets cost C$ 354 (return) on average. On the other hand, the most expensive months are October and November, when the average cost of round-trip tickets is C$ 940 and C$ 908 respectively.

  • How far in advance should I book a flight from Illinois to Ontario?

    To get a below-average price on the flight from Illinois to Ontario, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

  • How long is the flight to Ontario?

    An average direct flight from Illinois to Ontario takes 8h 11m, covering a distance of 1490 km. The shortest route is Chicago Midway Airport (MDW) to Toronto Island Airport (YTZ) with an average flight time of 1h 40m.

  • What are the most popular destinations in Ontario?

    Based on KAYAK flight searches, the most popular destination is London (68% of total searches to Ontario). The next most popular destination is Thunder Bay (32%).

Top 3 airlines serving from Illinois to Ontario

 
Need help choosing which airline to fly with from Illinois to Ontario? 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 289 reviews
7.6Food
8.2Boarding
8.1Comfort
8.7Crew
7.0Entertainment
Airline reviews

Great! Personable crew. I love that they pour complimentary beer and wine.

10.0 ExcellentSteve, Jun 2025LAS - YOW
Read more Porter Airlines reviews

Great! Personable crew. I love that they pour complimentary beer and wine.

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.

Evidently, my seat had the only broken TV. I couldn’t plug it in, get it to come on, or watch anything, and of course, no one could fix it while we were on the plane. The service was good and the boarding was quick

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.

The boarding of took of late.The presentation of the food was horrable as was the tast of the food was cold and tastless.

Delay and keep changing gates. I have to run around from B to C then to E.

I was charged for my daughters bag when I am supposed to receive two free checked bags with my United Explorer card.

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!

Flight was great. Efficient boarding. Short flight. Early arrival. Friendly flight crew. The entertainment system did not work well. Could not access it until the aircraft reached 10K feet or more. Lots of glitches.

A bit rush for transit. Food and entertainment are not available

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

Flight was delayed but the real issue is how long we sat after boarding. Space very limited for an overnight flight and seatbacks didn’t recline so it was almost impossible to sleep.

The staff made sure I was comfortable, moved me to a better seat with more leg room

Somehow, my booking was under my preferred name instead of my legal name so they almost didn’t let me board the plane at LAX. This problem should have been notified to me when I was still in Toronto.

When arriving over 2 hours early to check k in at Charlotte airport I was told I would have to check my carry on ? Apparently the flight was full and may not be room. I was not given a choice and the agent was quite unpleasant about it. I am a senior amd was not comfortable me having to worry about my bag being lost vut it didn’t seem to bother him. There were lots and lots of people of all ages in line when we boarded with carryons and most larger than mine .the rest of my journey was pleasant vut this was totally unacceptable.

The layover was 6 PLUS hours and we were only given a $15.00 voucher. We missed our first activity in Quebec due to the delay.

Miserable staff as it was a late/delayed flight and crew wasn’t in the best spirits. Completely understood as neither was most of the passengers. Still unacceptable l.

It was a short flight, and no entertainment. That was not a problem for us, but there is no option for "not applicable". There was a bit of turbulence, so there was no food service.

the fact air Canada changed my flight from 850 PM to 815 AM with zero regard to the plans i made that last day, the cost i lost out on as things were non refundable amd shortening my first vacation in 7 years sickened me. when we purchase a service thats whats we expect. when we want to change the service we have to pay for that option but you do whatever you want . i called accessibility dept as i have a cpap and an implanted loop recorder first person said no problem just let security know you cant go thru scanners. then i got an email saying i had to fill out a fit to fly form . which again there was NO need to have that none. But that cost me money and time to have a doctor fill it out. then when i went to check in online i was declined i had to see a person at the airport instead. i couldnt get my boarding pass like everyone elseso here I was contacting air canada so I would have a easy travel experience and it ended up being a nightmare with more work for me, more cost and time. the flight itself was great the nightmare around it i will never subject myself to again. i tried to stick with supporting Canada but Air Canada was not worth supporting. very disappointed especially with a dept that is supposed to help disabled people not make an already challenging event not worth going thru at all.

Most courteous, helpful employees and all flights were on time.

2.5 hour delay sitting in the plane on the tarmac, you tell me how the experience was

Book cheap flights from Illinois to Ontario

Recent round-trip flight deals

13/9Sat
directPorter Airlines
1h 42mMDW-YTZ
20/9Sat
directPorter Airlines
1h 49mYTZ-MDW
C$ 227
16/9Tue
directAmerican Airlines
1h 43mORD-YYZ
16/9Tue
1 stopAmerican Airlines
6h 27mYYZ-ORD
C$ 228
19/11Wed
directAir Canada
2h 12mORD-YUL
24/11Mon
directAir Canada
2h 39mYUL-ORD
C$ 232
16/9Tue
1 stopUnited Airlines
11h 33mORD-YYZ
17/9Wed
directUnited Airlines
2h 01mYYZ-ORD
C$ 238
24/11Mon
1 stopAir Canada
5h 10mORD-YYZ
28/11Fri
1 stopAir Canada
6h 45mYYZ-ORD
C$ 240
12/9Fri
directUnited Airlines
1h 46mORD-YYZ
20/9Sat
directUnited Airlines
2h 03mYYZ-ORD
C$ 257
11/7Fri
direct
1h 40mMDW-YTZ
14/7Mon
direct
1h 50mYTZ-MDW
C$ 266
9/7Wed
direct
1h 40mMDW-YTZ
11/7Fri
direct
1h 50mYTZ-MDW
C$ 269
6/8Wed
directAir Transat
1h 42mMDW-YTZ
7/8Thu
directAir Transat
1h 50mYTZ-MDW
C$ 292
22/7Tue
directAir Transat
1h 40mMDW-YTZ
24/7Thu
directAir Transat
1h 50mYTZ-MDW
C$ 295

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Recent one-way flight deals

23/11Sun
directAir Canada
2h 12mORD-YUL
C$ 80
15/11Sat
directAir Canada
1h 41mORD-YYZ
C$ 90
15/7Tue
directPorter Airlines
1h 42mMDW-YTZ
C$ 95
17/7Thu
directPorter Airlines
1h 42mMDW-YTZ
C$ 96
11/10Sat
1 stopUnited Airlines
7h 20mORD-YYZ
C$ 107
6/9Sat
1 stopAmerican Airlines
11h 41mORD-YUL
C$ 107
9/7Wed
directUnited Airlines
1h 44mORD-YYZ
C$ 114
15/11Sat
directAir Transat
1h 42mMDW-YTZ
C$ 115
9/7Wed
directAir Transat
1h 40mMDW-YTZ
C$ 118
26/6Thu
1 stopAmerican Airlines
5h 20mORD-YYZ
C$ 122

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Last minute flights from Illinois to Ontario

Last minute flight, train and bus deals

21/6Sat
directPorter Airlines
1h 42mMDW-YTZ
4/7Fri
directPorter Airlines
1h 49mYTZ-MDW
C$ 326
20/6Fri
directPorter Airlines
1h 42mMDW-YTZ
4/7Fri
directPorter Airlines
1h 49mYTZ-MDW
C$ 348
21/6Sat
directUnited Airlines
1h 49mORD-YYZ
25/6Wed
directUnited Airlines
1h 59mYYZ-ORD
C$ 418
21/6Sat
directAir Canada
1h 45mORD-YYZ
25/6Wed
multi-stopAir Canada
4h 37mYYZ-ORD
C$ 425
21/6Sat
directAir Transat
1h 42mMDW-YTZ
5/7Sat
directAir Transat
1h 50mYTZ-MDW
C$ 426
20/6Fri
directAmerican Airlines
2h 00mORD-YYZ
4/7Fri
multi-stopAmerican Airlines
6h 07mYYZ-ORD
C$ 436
20/6Fri
multi-stopAmerican Airlines
7h 59mORD-YYZ
4/7Fri
multi-stopAmerican Airlines
8h 51mYYZ-ORD
C$ 450
21/6Sat
multi-stopUnited Airlines
11h 33mORD-YYZ
25/6Wed
multi-stopUnited Airlines
4h 43mYYZ-ORD
C$ 452
21/6Sat
multi-stopAir Canada
5h 06mORD-YTZ
4/7Fri
multi-stopAir Canada
5h 30mYTZ-ORD
C$ 557
21/6Sat
directAir Transat
1h 42mMDW-YTZ
6/7Sun
directAir Transat
1h 50mYTZ-MDW
C$ 661

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Everything you need to know for your flight to Ontario

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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