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Find cheap flights from Illinois to Ontario from C$ 143

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Illinois to Ontario departing on 18/6. 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
0 bags
Sat 15/6
Sat 22/6

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Low season

January

High season

July

Cheapest flight

C$ 143
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (7% more expensive on average)
Flight from Chicago O'Hare Airport to Toronto Pearson Airport

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 to Ontario from 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 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 to Ontario with an airline and back to Illinois 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 to Ontario from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 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.
8.2
Singapore AirlinesOverall score based on 1448 reviews
7.8Food
8.7Crew
8.4Boarding
8.1Comfort
8.1Entertainment
Airline reviews

I commend the flight attendants on our SFO-SIN flight who went above and beyond to provide us with extra snacks and food. This type of service makes the flight experience personal and awesome.

10.0 ExcellentAnonymous, Apr. 2024SFO - SIN
Read more about Singapore Airlines reviews

I commend the flight attendants on our SFO-SIN flight who went above and beyond to provide us with extra snacks and food. This type of service makes the flight experience personal and awesome.

I requested an aisle seat and got a middle seat The flight gate was changed and the flight was delayed

It was a great flight Food was great Crew was spectacular

In general good, but the machine seems to be long in operation and some functions were restricted as e. g. Adjusting of seats.

Cabin Crew always friendly and helpful. Seating cramped - foul smelling from toilets, high risk of disease. Guard personal property such as expensive sunglasses Coffee always awful and cold Meal trays toddler sized Not worth the extra cost to fly SQ - use a budget airline, same if not better experience

It seems paying premium economy does not make difference with economy. No priority boarding, not worthy paying extra$$$ for premium economy.

People were so nice! Economy seats were small and cramped feeling for me. I’m slender and 6 feet tall

The singapore airline now compared before covid, I like the service before covid. SQ was the best of all airlines but now I am going to look for different airline if I am travelling in asia.

A pc of cake or biscuit at least. The airport was like a maze need to take another bus to the main terminal to immigration.

Due to the delay of my first flight, my connecting flight with JetBlue was canceled by Singapore Airlines, but the JetBlue crew was very accommodating and rebooked a seat for me. The crew was very nice and had good attitude.

The first economy rows have remote space in the seat which eats in the seating space. The seats are also smaller compared to other airlines.

The overall flight went well and the aircrew was pleasant.

Cathay Pacific seems to be an airline in trouble and on its way out. Lots of broken or poorly functioning things like entertainment screens, seats, and enough well trained staff to handle a full flight. Sad...

The flight crew was exceptionally good. Personal needs were well met. The food choices were very nice.

Excellent. Planes are a little older and could get some refurbishment, but besides that everything was excellent.

While I was in great pain, the seat was sufficiently comfortable to allow me to rest and not be in so much pain.

we were upgraded which was a blessing and tender mercy for us. I fell the day before and was in extreme pain from knee to shoulder. Sitting in a more comfortable seat during the flight was an unexpected blessing and experience.

My seat was sold off to someone else. Had to wait 9 hours to catch the next filght. Definitely will never use Cathay Pacific again. Bad, very bad airline. will comment on google reviews too.

Seats were very comfortable. Crew were excellent. Food very good.

Flight crew was especially thoughtful and attentive, made sure our seats were comfortable so we could rest on the long flight

WiFi didn’t work on both sectors so made killing time harder - planes clean modern and good flight crew - would do again if WiFi works

6hrs fly they dont give you a glass of water from seoul to singapore need to buy drink and food plus they charge for bag on international fly is always Free 1 bag from seoul to singapore is Not a local fly you are traveling true asia same story from singapore to Bali no water drink after payment for bag drink cost more the regular airline Well never use this company again we use regular company like Delta korea japan China and even scoot parent company Singapore Air

We had 2 attempts to land at Singapore Changing during a thunderstorm. Everything was delayed by 1 hour plus.

Boarding was not accordingly after front seat, bmf then back seat. This delayed for at least 40mins or more. The staff at Jakarta can do better. Is chaos at the entry to board the plane. This tarnished Scoot reputation when everyone was talking about it.

The crew was not customer oriented at all, even confrontational . The aircraft needs more attention to detail as far as comfort, and the 1 hour sitting at the gate with no air is inexcusable

We flew on the 787 Dreamliner direct to main gate at KLIA2, quick entry via eGate and on the train 41mins after touchdown. Go well SCOOT

Was on scoot plus. The only good thing about the flight was the spacious seats. Tables and armrests were extremely dirty Food: bad Entertainment: non existent Wifi: unable to connect, then was painfully slow that we couldn’t even send messages Good thing we had a night flight, so we just slept throughout.

Not clear why boarding passes could only be issued at the counter and not through the kiosk. I had already check-in on the web, so waiting to obtain a boarding pass 1.5 hours before the actual flight defeats the purpose of early web check-in.

no charging point. food offering is limited and very much on the budget line. Overall is not satisfying for such a price and duration of flight.

We were delayed, but there was never any update given. Everyone was standing at the gate as boarding was supposed to commence at 13:10 for a 13:55 flight. We didn't actually start getting on the shuttles to the plane, until after 14:00. No updates, no information given at all.

Delay flight more than 8hours waiting and poor customer service!

Plane was extremely small so mind the size of your carry on

Other than lack of snacks, everything else went very well.

They don’t keep you updated on the flight status very well. It was late but nothing said

Pros: "Nothing!!! Horrible airline with horrible staff members."
Cons: "Everything. The staff and crew of Intercaribbean airlines are very unprofessional and not helpful at all. On top of the flight delays all the luggage for that particular flight was left in Kingston. Everybody was rather nonchalant and unapologetic about the situation. I was told I would get the the following day. The next day only two of my three bags showed up. I was not compensated for the inconvenience and was told point blank that they will only deliver one of my bags to my address even though they were the reason I had NONE of my luggage in the first place. They are disgusting!!! I would never recommend this airline to anyone."
Pros: "Nice people"
Cons: "A long walk to the D3 gate, but there were no amenities there I.e. snacks (to be fair a new terminal is under construction)"
Cons: "There was no air. I understand when you are on the ground it can be limited but even after getting to altitude there was no air conditioning."
Cons: "The flight was delayed for over three hours, apparently it is a regular occurence."
Pros: "almost nothing"
Cons: "The plane had a problem that forced us to turn around right after take off and as of this writing we still don’t know what’s going on or how long we are stuck here. Planes are old and apparently maintenance could be better."
Cons: "Was a bit difficult understanding the flight attendant, she had a thick Spanish accent"

Book cheap flights from Illinois to Ontario

Recent round-trip flight deals

12/6Wed
1 stop
18h 20mORD-YYZ
19/6Wed
1 stop
12h 10mYYZ-ORD
C$ 298
4/6Tue
1 stop
6h 45mORD-YYZ
11/6Tue
1 stop
10h 58mYYZ-ORD
C$ 302
1/6Sat
directPorter Airlines
1h 42mMDW-YTZ
14/6Fri
directPorter Airlines
1h 47mYTZ-MDW
C$ 328
28/5Tue
directPorter Airlines
1h 42mMDW-YTZ
14/6Fri
directPorter Airlines
1h 47mYTZ-MDW
C$ 330
30/5Thu
directAir Canada
1h 45mORD-YYZ
15/6Sat
directAir Canada
1h 54mYYZ-ORD
C$ 366
28/5Tue
directAir Canada
1h 45mORD-YYZ
13/6Thu
directAir Canada
1h 54mYYZ-ORD
C$ 368
5/6Wed
directAmerican Airlines
1h 50mORD-YYZ
5/6Wed
1 stopAmerican Airlines
6h 52mYYZ-ORD
C$ 383
6/6Thu
1 stopDelta
8h 25mMDW-YYZ
10/6Mon
1 stopDelta
8h 19mYYZ-MDW
C$ 391
29/5Wed
1 stopAmerican Airlines
5h 29mORD-YYZ
29/5Wed
directAmerican Airlines
1h 55mYYZ-ORD
C$ 398
31/5Fri
1 stopDelta
7h 24mORD-YYZ
3/6Mon
1 stopDelta
4h 31mYYZ-ORD
C$ 432

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Recent one-way flight deals

18/6Tue
1 stop
18h 20mORD-YYZ
C$ 143
11/6Tue
1 stop
18h 20mORD-YYZ
C$ 151
31/5Fri
1 stopPorter Airlines
4h 45mMDW-YUL
C$ 159
28/5Tue
directAir Canada
1h 45mORD-YYZ
C$ 162
10/6Mon
directPorter Airlines
1h 42mMDW-YTZ
C$ 163
18/6Tue
directAir Canada
1h 43mORD-YYZ
C$ 166
5/6Wed
1 stopDelta
8h 14mORD-YYZ
C$ 180
11/6Tue
1 stopDelta
8h 04mMDW-YYZ
C$ 180
11/6Tue
directUnited Airlines
1h 45mORD-YYZ
C$ 181
17/7Wed
1 stopUnited Airlines
11h 01mORD-YYZ
C$ 223

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Last minute flights from Illinois to Ontario

Last minute flight, train and bus deals

21/5Tue
directPorter Airlines
1h 42mMDW-YTZ
29/5Wed
directPorter Airlines
1h 47mYTZ-MDW
C$ 537
21/5Tue
direct
1h 42mMDW-YTZ
29/5Wed
multi-stop
6h 50mYTZ-MDW
C$ 549
21/5Tue
multi-stopUnited Airlines
11h 44mORD-YYZ
29/5Wed
directUnited Airlines
2h 02mYYZ-ORD
C$ 567
18/5Sat
multi-stopWestJet
23h 08mORD-YYZ
20/5Mon
multi-stopWestJet
12h 10mYYZ-ORD
C$ 568
21/5Tue
multi-stopUnited Airlines
11h 44mORD-YYZ
29/5Wed
multi-stopUnited Airlines
9h 35mYYZ-ORD
C$ 587
21/5Tue
directAmerican Airlines
1h 35mORD-YYZ
29/5Wed
directAmerican Airlines
1h 55mYYZ-ORD
C$ 635
21/5Tue
directAmerican Airlines
1h 50mORD-YYZ
28/5Tue
directAmerican Airlines
1h 56mYYZ-ORD
C$ 723
19/5Sun
multi-stopWestJet
10h 09mORD-YYZ
22/5Wed
multi-stopWestJet
6h 47mYYZ-ORD
C$ 733
20/5Mon
directAir Canada
1h 45mORD-YYZ
25/5Sat
directAir Canada
1h 54mYYZ-ORD
C$ 760
20/5Mon
directAir Canada
1h 45mORD-YYZ
25/5Sat
multi-stopAir Canada
4h 31mYYZ-ORD
C$ 767

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Flights to Ontario

Return flight deals:

Ontario - Illinois

Cabin classes:

C$ 1,345
C$ 177