$42 Find Cheap Flights from Illinois to Ontario

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Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$42
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 5% lower on average.
Flight from Chicago O'Hare Airport to Toronto Pearson Airport

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

Insights shared by verified travelers who flew the route from Illinois to Ontario 
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 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.
JohannesFlew with Air CanadaORD-YYZSep 2024
Avoid the red eye flight if you get older/retire.
MarcFlew with United AirlinesORD-YOWMar 2024
United's fleet of smaller aircraft on this route is very comfortable.
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 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 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 $170.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Friday where round-trip tickets can be as cheap as $639. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $784 on average.

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

    The cheapest time of day to fly to Ontario is generally in the morning, when round-trip flights cost $573 on average. Morning departures are around 26% cheaper than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the evening, which is peak travel time and where the average cost of a ticket is $769.

  • What is the cheapest flight to Ontario?

    The cheapest ticket to Ontario from Illinois found in the last 72 hours was to Ottawa, at $127 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 $158.

  • 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 $261 (return) on average. On the other hand, the most expensive months are October and November, when the average cost of round-trip tickets is $699 and $669 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 23 weeks before departure.

  • How long is the flight to Ontario?

    An average nonstop flight from Illinois to Ontario takes 8h 43m, covering a distance of 625 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Toronto Pearson Intl Airport (YYZ) 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 Toronto (91% of total searches to Ontario). The next most popular destinations are Ottawa (7%) and Thunder Bay (1%). Searches for flights to London (0%) and to Kingston (0%) are also popular.

Top 5 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 286 reviews
7.6Food
7.0Entertainment
8.7Crew
8.1Comfort
8.2Boarding
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.

Over the wing seat at emergency exit only downside people using lavatory have no respect and wait in the space

Flight delayed any hour and couple of big gate changes

The pilot came out and chatted with the passengers. He explained why there was a slight delay. The crew was excellent. Very helpful. I had to buy meals for my whole family and they were in different seats, so the crew had to deal with that. They were very pleasant and accommodating and did a great job!

We were unable to land in Liberia. It was not the airline’s fault, but we had to be diverted to SJO.

We had things stolen from our luggage, we also were refused an upgrade on a flight that was not full.

When we left, it wasn't Great . People were drinking heavily, very disrespectful Extremely loud, the entire trip. I think the crew members, should have get their attention. Coming back was great.

I sat in the club. The seeds were fantastic. The meal was great and Entertainment was good. The crew was fantastic. I recommend it to everybody.

The food was small portions and not fresh. I was seated at the back of the plane so by the time the cart approached me most of the food options were sold out. The cabin crew was fantastic however.

Great flight and crew. Food isn't free and neither are headphones...

We were in economy class but paid for option Plus which offer you an extra snack after take off, free earplugs & blanket. The crew were very attentive. The comfort however wasn’t great, hard to be comfortable in such restraint place. Wasn’t able to sleep through out the 7hrs flight and was exhausted upon arrival.

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.

I do prefer to fly United and have always had excellent service, except for bad weather. Flights are on time and staff is alway curtious and helpful

They switched out gate from terminal 1 to terminal two ten minutes before boarding. So we had to make a 20 min crazy fast walk to a different terminal. Then we boarded the plane and waited for over 40 minutes until push back. Brutal

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

Was a normal flight but it was delayed, and there wasn't an explanation.

I have long legs, my foot was out in the aisle and when a flight attendant came walking by and I didn't notice, instead of saying "excuse me" or anything like that, she kicked my foot. Extremely rude

Excellent! The gate agents were kind enough to rebook me on an earlier flight saving me from a 6 hour layover. Even my luggage made it despite the fact that the connection was technically too narrow. The flight itself was very comfortable, roomy, and clean. Plenty of space for my carryon items with plugs to charge my phone. After a long international flight of 14 hours, this was an excellent way to end my travels!

Great experience. Flight boarded easily. Departed early. Smooth flight. Great arrival in DC--almost no taxing! Almost direct to gate from runway. Crew was terrific. Same cookies and beverages in main cabin. I did not use the entertainment system on this flight.

This particular flight wasn't very full at the back, so there were three seats available for spreading out and getting relatively comfortable

Most of the delay was due to weather which is not what was at issue here. One delay was due to a missing flashlight and in the end the flashlight was actually found on the plane. The entertainment system is very limited. Live TV options offer only a few channels that are not very appealing. Boarding and deplaning are always difficult. It just takes too much time to get on and off the plane. On the plus side, I missed my connecting flight, but was easily able to book a later flight from the app while enroute.

You were more on time than United. I'm so over united delays.

The meals were mediocre and the alcohol selection was poor. I enjoyed the selection of movies and other entertainment.

I chatted with the captain before the flight, and similarly during the welcome announcement, he warned of a turbulent flight that may impact the in-flight service. However, once at altitude, he announced that the weather changed and he immediately turned off the seatbelt sign. But it appeared the cabin crew had already decided to take off this flight. They remained seated and then just chatted in the galley. The flight was fully catered, but only first class received service.

My flight attendant was attentive! The elderly person next to me was flatulent and the flight attendant could see that I was in distress and brought me some face masks

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

I hope these comments will find their way to AC customer experience team. Me and my spouse 50 years of aged coming back from 7 days perfect vacation... While boarding in FLL flight AC1621, one of the boarding agents (tall aged african american) man literelly yeld at my wife during the picture talking process. MAM ! STEP !! BACK !!! We are not illegal immegrants beying deported, nor are we in the millitary. We are customers returning home. This was unacceptable. While boarding in YYZ flight AC1154, one of the boarding agents (tall aged caucasian) man criticied with several complesant remarks my passport condition saying that I could not travel intl with it due to stain, decoloration, and BLOOD. My passport does not have blood on it! Yes it might be in less than perfect condition, but their are ways to talk to customer that does not imply not allow a boarding agent to be angry fathery like, or a custom agent looking at a suspicious individual. Both experience were less than acceptable for might I remind you a paying CUSTOMER returning home.

This flight didn't happen for me because of overbooking.

Terrible experience, flight was delayed both ways. Limited compensation for the 5+ hour delay. Will not be flying Air Canada Rouge, and don’t recommend you do either.

The boarding was relatively quick, the crew welcoming and flight uneventful. The omission of meals on all airlines is unacceptable especially when the flight is during a mealtime such as this one, (lunchtime), is unacceptable.

Everything was simple and easy. The lady at the gate was super friendly, I wish I had her name to share. She's a little older, dark-haired. You can tell she likes her job and would be a great influence on any young people training with her.

No Charging ports for personal electronics, which were required to use wifi entertainment.

Book cheap flights from Illinois to Ontario

Recent round-trip flight deals

9/12Fri
nonstopAir Canada
1h 43mORD-YYZ
9/19Fri
nonstopAir Canada
1h 53mYYZ-ORD
$125
9/24Wed
1 stopUnited Airlines
13h 26mORD-YYZ
9/25Thu
nonstopUnited Airlines
1h 54mYYZ-ORD
$132
9/3Wed
nonstopUnited Airlines
1h 43mORD-YYZ
9/6Sat
nonstopUnited Airlines
1h 54mYYZ-ORD
$145
10/16Thu
nonstopAir Canada
2h 18mORD-YUL
10/18Sat
nonstopAir Canada
2h 46mYUL-ORD
$148
7/23Wed
nonstopPorter Airlines
1h 40mMDW-YTZ
7/30Wed
nonstopPorter Airlines
1h 49mYTZ-MDW
$182
6/13Fri
nonstopPorter Airlines
1h 40mMDW-YTZ
6/20Fri
nonstopPorter Airlines
1h 49mYTZ-MDW
$185
6/10Tue
1 stopAmerican Airlines
8h 26mORD-YYZ
6/10Tue
nonstopAmerican Airlines
2h 00mYYZ-ORD
$206
6/10Tue
1 stopAmerican Airlines
5h 20mORD-YYZ
6/10Tue
1 stopAmerican Airlines
5h 52mYYZ-ORD
$221
6/7Sat
nonstopAir Transat
1h 42mMDW-YTZ
6/9Mon
nonstopAir Transat
1h 50mYTZ-MDW
$234
7/21Mon
nonstopAir Transat
1h 40mMDW-YTZ
7/26Sat
nonstopAir Transat
1h 50mYTZ-MDW
$242

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Recent one-way flight deals

10/14Tue
nonstopAir Canada
1h 43mORD-YYZ
$42
10/14Tue
nonstopAir Canada
1h 43mORD-YYZ
$43
10/14Tue
1 stopUnited Airlines
4h 29mORD-YYZ
$58
9/8Mon
1 stopUnited Airlines
4h 29mORD-YYZ
$64
7/14Mon
nonstopPorter Airlines
1h 42mMDW-YTZ
$74
9/22Mon
1 stopAmerican Airlines
12h 34mORD-YUL
$77
6/15Sun
nonstopPorter Airlines
1h 42mMDW-YTZ
$79
10/7Tue
2 stopsAmerican Airlines
10h 30mORD-YYZ
$82
7/2Wed
nonstopAir Transat
1h 42mMDW-YTZ
$95
6/28Sat
nonstopAir Transat
1h 42mMDW-YTZ
$99

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Last minute flights from Illinois to Ontario

Last minute flight, train and bus deals

5/23Fri
nonstopPorter Airlines
1h 42mMDW-YTZ
5/28Wed
nonstopPorter Airlines
1h 49mYTZ-MDW
$455
5/22Thu
nonstopPorter Airlines
1h 42mMDW-YTZ
5/26Mon
nonstopPorter Airlines
1h 50mYTZ-MDW
$476
5/22Thu
nonstopAmerican Airlines
1h 40mORD-YYZ
6/6Fri
nonstopAmerican Airlines
1h 55mYYZ-ORD
$510
5/22Thu
multi-stopAmerican Airlines
4h 55mORD-YYZ
6/6Fri
nonstopAmerican Airlines
2h 00mYYZ-ORD
$520
5/24Sat
multi-stopAir Canada
5h 14mORD-YYZ
5/26Mon
nonstopAir Canada
1h 55mYYZ-ORD
$525
5/24Sat
multi-stopAir Canada
5h 04mORD-YYZ
5/26Mon
multi-stopAir Canada
4h 37mYYZ-ORD
$530
5/22Thu
nonstopAir Transat
1h 42mMDW-YTZ
5/26Mon
nonstopAir Transat
1h 50mYTZ-MDW
$539
5/23Fri
multi-stopUnited Airlines
9h 50mORD-YYZ
5/27Tue
nonstopUnited Airlines
1h 54mYYZ-ORD
$589
5/24Sat
nonstopUnited Airlines
1h 45mORD-YYZ
5/30Fri
nonstopUnited Airlines
2h 05mYYZ-ORD
$612
5/20Tue
nonstopAir Transat
1h 42mMDW-YTZ
5/25Sun
nonstopAir Transat
1h 50mYTZ-MDW
$647

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Everything you need to know for your flight to Ontario

Cabin class types available on flights to Illinois

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