C$ 135 Find Cheap Flights from Ontario to Illinois

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Good to know

Low seasonJanuary
High seasonAugust
Cheapest flightC$ 135
Best time to beat the crowds but there is an average 1% increase in price.
Most popular time to fly and prices are also 0% lower on average.
Flight from Toronto Pearson Airport to Chicago O'Hare Airport

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

Insights shared by verified travellers who flew the route from Ontario to Illinois 
BrianFlew with Air CanadaYYZ-ORDOct 2024
Be prepared for a labyrinthine experience traversing the various levels and passages of the Toronto airport. Bring quality walking shoes, as it is likely well over a km in total walking time.
Verified travelerFlew with United AirlinesYYZ-ORDMar 2024
Carry-on baggage sizing for United US bound flights appears to be much smaller than for Canadian flights, which forced me to check my bag at the last minute. So check online ahead of time

FAQs for booking flights from Ontario to Illinois

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

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

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

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Illinois is Chicago Midway Airport (MDW), with an average flight price of C$ 213.

  • What is the cheapest day to fly to Illinois?

    Based on KAYAK data, the cheapest day to fly to Illinois is Friday when round-trip tickets can be as cheap as C$ 788. On the other hand, the most expensive day to fly is Tuesday, when round-trip prices are C$ 1,314 on average.

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

    The cheapest time of day to fly to Illinois is generally at night, when round-trip flights cost C$ 425 on average. Morning departures are around 43% cheaper than evening flights, on average. The most expensive time of day to fly to Illinois is generally in the evening, which is peak travel time and where the average cost of a ticket is C$ 1,104.

  • What is the cheapest flight to Illinois?

    The cheapest ticket to Illinois from Ontario found in the last 72 hours was to Chicago O'Hare Intl Airport, at C$ 149 round-trip. The most popular route is Ottawa (YOW) 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$ 149.

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

    The cheapest month for flights from Ontario to Illinois is December, when tickets cost C$ 413 (return) on average. On the other hand, the most expensive months are March and July, when the average cost of round-trip tickets is C$ 984 and C$ 600 respectively.

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

    To get a below-average price on the flight from Ontario to Illinois, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 12 weeks before departure.

  • How long is the flight to Illinois?

    An average direct flight from Ontario to Illinois takes 7h 49m, covering a distance of 1483 km. The shortest route is Toronto Island Airport (YTZ) to Chicago Midway Airport (MDW) with an average flight time of 1h 49m.

  • What are the most popular destinations in Illinois?

    Based on KAYAK flight searches, the most popular destination is Chicago (94% of total searches to Illinois). The next most popular destinations are St. Louis (6%) and Bloomington (0%). Searches for flights to Champaign (0%), to Peoria (0%), and to Quincy (0%) are also popular.

Top 5 airlines serving from Ontario to Illinois

 
Need help choosing which airline to fly with from Ontario 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.
8.0
Porter AirlinesOverall score based on 288 reviews
7.0Entertainment
8.7Crew
8.1Comfort
8.2Boarding
7.6Food
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.

The flight and crew were good. Departure and arrival were timely. Check-in was professional and helpful in Malaga on return trip (same on outbound trip from Toronto). The ad before ach program was punishing - specifically for the internet/data service with the content creator that was showed twice in each ad pod. It was so annoying I made an effort to forget the name and would not use the service. Provide an opportunity to fast forward or skip the darn ads once they have been initially viewed.

Extra attention to kids, thank you, we appreciate! Perfect landing

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.

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.

I liked that the flight was nonstop from ORD to CIU for $200 round trip.

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!

All flight attendants could benefit by taking an international flight on Qantas Airline. Qantas attendants are much more hospitable in every way. Much superior than and attendants on any US airline.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

The first flight was better in terms of the aircraft.

So far so good but food and entertainment are not available for this flight

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

We tried to upgrade to economy premium but were told this was not possible as we had booked through United Airlines (and Air Canada was operating the flight). This seemed silly given there was ample space in economy premium. Additionally, we had to wait almost 1.5 hours upon arrival to taxi to the gate. Otherwise, the crew were very pleasant and passengers were friendly.

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

Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.

The flight was 2 hour delayed, otherwise everything was excellent. The delay was due to the hourly limit requirement so given that as a reason, I'm happy with the flight!

Not sure the logic of the boarding in Groups. I was loaded first on the aisle. Then the guy in the middle. Then the guy by the window. Constantly holding up the other people boarding behind them with us blocking the aisle and this happened in most of the other rows

To start, I’d like to say that every American Airline personnel I interacted with on the ground, especially flight crew, was very friendly and did their best to help me out. Despite this, however, my experience with the airline was an entire mess. The 7:19 PM flight was heavily delayed due to weather, and pushed to 10:30 AM the next morning. Because of this, I had to spend the night inside of the airport. At some point later in the night, I got an email saying that the flight had been canceled. I called the support number, and the representative on the other line told me that the flight was still on and that I didn’t need to rebook. The next morning, no one came to the gate to open the door for the crew until almost 11 AM. By this time the flight crew had been waiting for over an hour, and they had called management to get someone to open the door for them multiple times. Around 11:30, the gate screen had changed to a different flight. I ended up buying a last minute ticket with Southwest airline just to get to Chicago, because the next flight with American wasn’t until 7:19 pm that day. Now, earlier that morning my suitcase had been sent ahead of me to ORD. I went to baggage claim to ask them if I could have my suitcase forwarded to where I was staying. The representative at SDF baggage claim said they could and put the claim in for me. As I was going back through TSA, I got an email that the airline had found my suitcase, but the next step was to send it BACK to SDF. I called the airline support number again, and I made it clear that my suitcase needed to stay in Chicago and to not come back to SDF. The representative told me that they would hold my suitcase at ORD and that it wasn’t going to be forwarded anywhere. Once I got there, I found that they had loaded my suitcase onto a plane to send it back to SDF. Thankfully, I had gotten to the baggage claim counter in time for them to put in a request to bring my suitcase back up. My refund with the airline is processing already, but because of this entire experience and miscommunication at every turn of the way, I will not book with American Airlines in the future.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

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.

Somebody either kayak or Air Canada booked my flight under my preferred name Betty instead of my legal name and I almost was denied boarding my flight

The ground staff was so rude in Toronto airport ...very rude and did not answer simple questions, and made me look like a fool. Very rude ground staff.

My flight got delayed 5 times and then got cancelled eventually, I had to get a hotel and uber and pay for food for an extra night without any plans. It was a horrible experience, instead of Air Canada, I was flying with United .

I had a nice flight with free wifi. So I was able to message family members and stream music during my flight, which made the trip go by fast. I also enjoyed flying on there Airbus A220. The plane looked very new and it also got up to speed fast down the runway and didn't need much runway to get airborne.

Overall good experience. The flight from Toronto to Denver does not have entertainment - movies to watch.

Terrible. 3 missed flights and 24 hours delayed with lost bag and promised $100 compensation from United and absolutely nothing from them…

Ensure prepaid food arrangements are appropriately understood by flight crew of who purchased and who did not

All was fine. Weather was a bit stormy, but nothing kayak can do about that! 😊

I paid for a comfort class seat and was seated in economy.

My plane was cancelled and had to be rebook for the evening was not happy.

Book cheap flights from Ontario to Illinois

Recent round-trip flight deals

19/9Fri
directAir Canada
1h 54mYYZ-ORD
21/9Sun
directAir Canada
1h 43mORD-YYZ
C$ 201
5/9Fri
directAir Canada
2h 31mYUL-ORD
8/9Mon
directAir Canada
2h 14mORD-YUL
C$ 205
25/8Mon
directPorter Airlines
1h 49mYTZ-MDW
12/9Fri
directPorter Airlines
1h 42mMDW-YTZ
C$ 211
3/7Thu
directPorter Airlines
1h 49mYTZ-MDW
7/7Mon
directPorter Airlines
1h 40mMDW-YTZ
C$ 212
19/9Fri
directUnited Airlines
1h 59mYYZ-ORD
22/9Mon
1 stopUnited Airlines
11h 33mORD-YYZ
C$ 215
4/9Thu
1 stopUnited Airlines
6h 18mYYZ-ORD
10/9Wed
1 stopUnited Airlines
5h 32mORD-YYZ
C$ 235
30/8Sat
directAir Transat
1h 50mYTZ-MDW
12/9Fri
directAir Transat
1h 42mMDW-YTZ
C$ 254
30/9Tue
directAmerican Airlines
2h 35mYUL-ORD
2/10Thu
1 stopAmerican Airlines
4h 33mORD-YUL
C$ 257
30/9Tue
1 stopAmerican Airlines
5h 42mYYZ-ORD
2/10Thu
1 stopAmerican Airlines
6h 27mORD-YYZ
C$ 261
26/6Thu
directAir Transat
1h 50mYTZ-MDW
30/6Mon
directAir Transat
1h 40mMDW-YTZ
C$ 261

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Recent one-way flight deals

8/9Mon
directAir Canada
1h 54mYYZ-ORD
C$ 135
4/7Fri
directPorter Airlines
1h 49mYTZ-MDW
C$ 135
20/6Fri
directPorter Airlines
1h 50mYTZ-MDW
C$ 137
14/9Sun
directAir Canada
2h 31mYUL-ORD
C$ 139
1/10Wed
directAmerican Airlines
1h 55mYYZ-ORD
C$ 145
11/9Thu
directUnited Airlines
1h 55mYYZ-ORD
C$ 152
7/10Tue
directUnited Airlines
2h 03mYYZ-ORD
C$ 153
1/8Fri
directAir Transat
1h 50mYTZ-MDW
C$ 156
30/6Mon
directAir Transat
1h 50mYTZ-MDW
C$ 157
3/7Thu
1 stopAmerican Airlines
19h 20mYYZ-ORD
C$ 176

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Last minute flights from Ontario to Illinois

Last minute flight, train and bus deals

17/6Tue
directPorter Airlines
1h 49mYTZ-MDW
18/6Wed
directPorter Airlines
1h 42mMDW-YTZ
C$ 402
16/6Mon
multi-stopDelta
7h 27mYYZ-MDW
19/6Thu
multi-stopDelta
8h 36mMDW-YYZ
C$ 431
17/6Tue
directAmerican Airlines
1h 55mYYZ-ORD
18/6Wed
multi-stopAmerican Airlines
5h 04mORD-YYZ
C$ 470
17/6Tue
directAir Canada
2h 06mYYZ-STL
24/6Tue
directAir Canada
1h 55mSTL-YYZ
C$ 506
17/6Tue
multi-stopAir Canada
5h 58mYYZ-STL
24/6Tue
directAir Canada
1h 55mSTL-YYZ
C$ 513
14/6Sat
directAmerican Airlines
2h 35mYUL-ORD
28/6Sat
multi-stopAmerican Airlines
13h 09mORD-YUL
C$ 514
17/6Tue
directUnited Airlines
1h 59mYYZ-ORD
24/6Tue
multi-stopUnited Airlines
8h 24mORD-YYZ
C$ 532
16/6Mon
directUnited Airlines
2h 05mYYZ-ORD
19/6Thu
multi-stopUnited Airlines
11h 33mORD-YYZ
C$ 551
15/6Sun
directAir Transat
1h 50mYTZ-MDW
18/6Wed
directAir Transat
1h 42mMDW-YTZ
C$ 552
15/6Sun
directAir Transat
1h 50mYTZ-MDW
16/6Mon
directAir Transat
1h 42mMDW-YTZ
C$ 749

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Everything you need to know for your flight to Illinois

Cabin class types available on flights to Ontario

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

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