C$ 154 Find Cheap Flights from Ontario to Illinois

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Good to know

Low season

January

High season

August

Cheapest flight

C$ 154
Best time to beat the crowds but there is an average 4% increase in price.
Most popular time to fly (3% more expensive on average)
Flight from Toronto Island to Chicago Midway 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.
Jo AnnFlew with Air CanadaYYZ-ORDJun 2024
It seemed that anyone who checked a bag was able to retrieve it quickly.
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
Verified travelerFlew with Air CanadaYYZ-ORDFeb 2024
I would definitely choose Air Canada over dirty old United airplanes any day.
Verified travelerFlew with United AirlinesYYZ-ORDDec 2023
The departure time was very convenient with the United.

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 airlines fly most frequently to Illinois?

    Ontario and Illinois are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (102 flights per week), Air Canada (100 flights per week), and Air New Zealand (69 flights per week).

  • How many airports are there in Illinois?

    There are 12 airports in Illinois. The busiest airport is Chicago O'Hare Airport (ORD), with 92% of all flights arriving there.

  • 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$ 216.

  • 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$ 915. On the other hand, the most expensive day to fly is Tuesday, when round-trip prices are C$ 1,451 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$ 423 on average. Morning departures are around 44% 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$ 1,161.

  • 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$ 167 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$ 167.

  • 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$ 433 (return) on average. On the other hand, the most expensive months are March and September, when the average cost of round-trip tickets is C$ 1,033 and C$ 662 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 13 weeks before departure.

  • How many cities have direct flights to Illinois?

    From Ontario, there are direct flights to Illinois from 2 cities. The city with the most direct flights is Toronto, with 548 direct flights each week.

  • How many direct flights to Illinois are there each day?

    There are around 91 direct flights from within Ontario to Illinois every day. Most flights (44%) depart in the morning.

  • How many direct flights to Illinois are there each week?

    Each week there are around 637 direct flights from within Ontario to Illinois. The most common day for departures is Sunday, with 16% of flights taking off on this day.

  • How long is the flight to Illinois?

    An average direct flight from Ontario to Illinois takes 8h 40m, 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.

  • How many long-haul flights are there to Illinois each week?

    There aren’t any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to Illinois. Instead, there are 637 short-haul flights (up to 3 hour flight duration), with the most arriving from Toronto.

  • What are the most popular destinations in Illinois?

    Based on KAYAK flight searches, the most popular destination is Chicago (93% of total searches to Illinois). The next most popular destinations are St. Louis (6%) and Moline (1%). Searches for flights to Peoria (0%), to Quincy (0%), and to Champaign (0%) are also popular.

See more FAQs

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.
7.9
Porter AirlinesOverall score based on 278 reviews
8.2Boarding
8.0Comfort
8.7Crew
7.6Food
6.9Entertainment
Airline reviews

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.

8.0 ExcellentJendan, Mar 2025SFO - YYZ
Read more Porter Airlines reviews

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.

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.

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.

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

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.

headphone jack didnt work for the first flight and not much variety

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 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.

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?

Flight delayed, missed connection, had to stay overnight. Next flight instead of our business class we were booked on the very back row. Second time this had happened in 2 months.

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.

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.

The flight was cancelled and we had to rebook on Porter to make our cruise the next day. Air Canada has not compensated. We won’t be flying with them again. This is the second time this has happened. Also the return flight was delayed 2 hours who knows why.

Separated me and my wife and wife’s sister in far apart different seats even though I booked them all together. Just scams after scams to make us pay more. Worst airline

If you want your flight to get delayed constantly for 13+ hours and given a 10 dollar food voucher the. I would say take air canada. Worst experience ever.

My flight was cancelled and I was left to figure out where to find a hotel, something to eat and how to get a new flight at 11:30pm. Wasted a day. Thanks, Air Canada!

flight was delayed 6 hours for weather, then cancelled because of the crash in toronto, but none of the links to cancel or rebook my flights are working

They kept changing the gate (6 times in 30 minutes) and then left us on the plane for 4 hours before departure. Likely was the storm, which is understandable, but the lack of communication and the e constant running between gates at opposite ends of the airport really threw me and my friend for a loop.

Book cheap flights from Ontario to Illinois

Recent round-trip flight deals

28/4Mon
directPorter Airlines
1h 50mYTZ-MDW
5/5Mon
directPorter Airlines
1h 42mMDW-YTZ
C$ 248
24/4Thu
directPorter Airlines
1h 50mYTZ-MDW
27/4Sun
directPorter Airlines
1h 42mMDW-YTZ
C$ 250
24/4Thu
1 stopAir Canada
5h 22mYYZ-ORD
27/4Sun
1 stopAir Canada
5h 19mORD-YYZ
C$ 286
24/4Thu
1 stopAir Canada
5h 22mYYZ-ORD
27/4Sun
1 stopAir Canada
5h 19mORD-YYZ
C$ 293
24/4Thu
directAir Transat
1h 50mYTZ-MDW
27/4Sun
directAir Transat
1h 42mMDW-YTZ
C$ 300
11/6Wed
directAir Transat
1h 49mYTZ-MDW
14/6Sat
directAir Transat
1h 42mMDW-YTZ
C$ 323
15/5Thu
directUnited Airlines
2h 03mYYZ-ORD
21/5Wed
directUnited Airlines
1h 42mORD-YYZ
C$ 326
28/4Mon
directUnited Airlines
2h 06mYYZ-ORD
5/5Mon
directUnited Airlines
1h 38mORD-YYZ
C$ 329
24/4Thu
directAmerican Airlines
1h 55mYYZ-ORD
27/4Sun
1 stopAmerican Airlines
4h 55mORD-YYZ
C$ 382
17/5Sat
directAmerican Airlines
1h 55mYYZ-ORD
18/5Sun
directAmerican Airlines
1h 40mORD-YYZ
C$ 389

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Recent one-way flight deals

1/5Thu
directPorter Airlines
1h 49mYTZ-MDW
C$ 154
1/5Thu
directPorter Airlines
1h 49mYTZ-MDW
C$ 155
26/6Thu
1 stopAir Canada
5h 26mYTZ-ORD
C$ 181
27/6Fri
1 stopAir Canada
7h 26mYTZ-ORD
C$ 187
1/5Thu
directAir Transat
1h 49mYTZ-MDW
C$ 189
1/5Thu
directUnited Airlines
2h 03mYYZ-ORD
C$ 200
30/4Wed
directAir Transat
1h 50mYTZ-MDW
C$ 211
2/5Fri
directAmerican Airlines
1h 55mYYZ-ORD
C$ 227
22/4Tue
directUnited Airlines
2h 32mYUL-ORD
C$ 230
14/4Mon
directAmerican Airlines
1h 55mYYZ-ORD
C$ 267

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Last minute flights from Ontario to Illinois

Last minute flight, train and bus deals

4/4Fri
multi-stopPorter Airlines
5h 50mYUL-MDW
6/4Sun
multi-stopPorter Airlines
4h 37mMDW-YUL
C$ 426
3/4Thu
multi-stop
9h 10mYYZ-ORD
7/4Mon
multi-stop
21h 22mORD-YYZ
C$ 435
5/4Sat
directAmerican Airlines
1h 55mYYZ-ORD
17/5Sat
directAmerican Airlines
1h 40mORD-YYZ
C$ 537
5/4Sat
multi-stopAir Canada
4h 13mYTZ-ORD
17/5Sat
multi-stopAir Canada
5h 15mORD-YTZ
C$ 554
4/4Fri
directUnited Airlines
2h 06mYYZ-ORD
16/5Fri
directUnited Airlines
1h 42mORD-YYZ
C$ 563
5/4Sat
directAir Canada
2h 47mYUL-ORD
23/4Wed
multi-stopAir Canada
8h 05mORD-YUL
C$ 580
5/4Sat
directAmerican Airlines
1h 55mYYZ-ORD
19/4Sat
directAmerican Airlines
1h 40mORD-YYZ
C$ 600
4/4Fri
directAir Transat
1h 50mYTZ-MDW
8/4Tue
directAir Transat
1h 42mMDW-YTZ
C$ 662
4/4Fri
directUnited Airlines
2h 03mYYZ-ORD
6/4Sun
directUnited Airlines
1h 46mORD-YYZ
C$ 685
3/4Thu
directAir Transat
1h 50mYTZ-MDW
4/4Fri
directAir Transat
1h 42mMDW-YTZ
C$ 787

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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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