$45 Find Cheap Flights from Illinois to Ontario

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Low seasonJanuary
High seasonJuly
Cheapest flight$45
Best time to beat the crowds but there is an average 15% increase in price.
Most popular time to fly and prices are also 4% lower on average.
Flight from Chicago Midway Airport to Toronto Island

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 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 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 $163.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Thursday where round-trip tickets can be as cheap as $632. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $765 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 $560 on average. Morning departures are around 27% 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 $766.

  • 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 $154 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 $154.

  • 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 $692 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 16 weeks before departure.

  • How long is the flight to Ontario?

    An average nonstop flight from Illinois to Ontario takes 9h 40m, 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 39m.

  • What are the most popular destinations in Ontario?

    Based on KAYAK flight searches, the most popular destination is Toronto (95% of total searches to Ontario). The next most popular destinations are Ottawa (5%) and London (0%). Searches for flights to Thunder Bay (0%) and to Kingston (0%) are also popular.

Reviews of the 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 298 reviews
8.2Boarding
7.0Entertainment
8.7Crew
7.7Food
8.1Comfort
Airline reviews

was okay except.. 1)the porter check in webpage doesn't let you print your boarding pass from home 2)that there was a 90 min cut off for checking in on the kiosk in general, and to print a boarding pass, even tho i checked in online already....

8.0 ExcellentChaim, Jul 2025YYZ - LGA
Read more Porter Airlines reviews

was okay except.. 1)the porter check in webpage doesn't let you print your boarding pass from home 2)that there was a 90 min cut off for checking in on the kiosk in general, and to print a boarding pass, even tho i checked in online already....

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

Seats were very tight especially for first leg of trip.

Not necessarily a Transat issue but it took 2 hours to go through immigration. Tried to reach out to Transat for resolution but was unable to reach an agent.

The flight was excellent, once it started, however we were delayed two hours when the first plane’s engines wouldn’t start. They found another identical plane and transferred us and our luggage in under two hours and made up almost an hour in the air.

Really low cost trip for the huge amount I paid…o paid 550 dollars just for the trip, one way trip, plus 95 for 1 luggage’s and the second 135 dollars…no blanket, not headphones for entertainment, food was served after 3 hours and 2 hours after, breakfast was served Bad, low cost company for high prices

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.

Flight was actually on Air Canada. The flight itself was fine. Nothing special. Food was pretty pathetic except for cookies. They offered plenty of food and drinks but just wasn't very good. Even for airline food.

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.

I wish American Airlines would change the airline industry by loading the plane back to front instead of front to back. Planes would board so much more smoothly and quickly.

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.

We had a very long delay. First the inbound flight took a while, then maintenance, they “fixed it” to then do boarding and leave the gate, and waste a lot of time to have to go back to the gate and eventually deplane. Had to wait for a new aircraft, wait for a gate, and do the whole thing again. Instead of leaving at 9:50am we left until past 1. I could’ve not woken up at 5am, or spend some more time with my family if they gave more grace period of time between flights to give some time in case of any issues. But they have to make all and every dollar possible

Abandoned me in hallway in a wheelchair… which I asked for because I sprained my back. After waiting in the hallway, I decided to walk the rest of the way since someone respecting me up.. My experience with the united was totally the opposite. Wheelchair access, propped swift and save me a lot of grief. Air Canada totally disorganized.

Bad experience boarding and flight got delayed didn’t make it to my next flight

The food on the trip Toronto to Athens could be better: the chicken didn’t taste good.

Conflicting information provided about baggage allowance. One screen said I had a carry on and another said I didnt.

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.

Book cheap flights from Illinois to Ontario

Recent round-trip flight deals

9/29Mon
nonstopAir Canada
2h 14mORD-YUL
9/29Mon
1 stopAir Canada
4h 29mYUL-ORD
$133
9/10Wed
1 stopPorter Airlines
5h 45mMDW-YUL
9/15Mon
1 stopPorter Airlines
4h 14mYUL-MDW
$139
9/3Wed
nonstopPorter Airlines
1h 42mMDW-YTZ
9/9Tue
nonstopPorter Airlines
1h 49mYTZ-MDW
$140
9/29Mon
nonstopAir Canada
2h 14mORD-YUL
10/3Fri
nonstopAir Canada
2h 31mYUL-ORD
$150
11/2Sun
nonstopUnited Airlines
1h 39mORD-YYZ
11/4Tue
nonstopUnited Airlines
1h 59mYYZ-ORD
$168
10/31Fri
nonstopUnited Airlines
1h 39mORD-YYZ
11/3Mon
nonstopUnited Airlines
2h 05mYYZ-ORD
$172
10/12Sun
nonstopAmerican Airlines
1h 40mORD-YYZ
10/20Mon
nonstopAmerican Airlines
2h 00mYYZ-ORD
$185
9/22Mon
nonstopAmerican Airlines
2h 21mORD-YUL
9/25Thu
nonstopAmerican Airlines
2h 35mYUL-ORD
$188
9/9Tue
1 stopDelta
6h 53mMDW-YYZ
9/13Sat
1 stopDelta
7h 21mYYZ-MDW
$234
10/11Sat
1 stopDelta
8h 24mMDW-YUL
10/14Tue
1 stopDelta
9h 59mYUL-MDW
$237

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Recent one-way flight deals

10/15Wed
nonstopAir Transat
1h 42mMDW-YTZ
$45
9/8Mon
1 stopPorter Airlines
5h 45mMDW-YUL
$47
9/16Tue
nonstopAir Canada
1h 42mORD-YYZ
$51
10/15Wed
nonstopAir Canada
1h 43mORD-YYZ
$52
11/23Sun
nonstopUnited Airlines
1h 46mORD-YYZ
$59
9/3Wed
nonstopUnited Airlines
1h 46mORD-YYZ
$63
10/31Fri
1 stopAmerican Airlines
16h 10mORD-YUL
$77
7/13Sun
1 stopAmerican Airlines
16h 29mORD-YUL
$79
10/31Fri
1 stopDelta
5h 28mMDW-YUL
$89
9/8Mon
1 stopDelta
3h 22mORD-YYZ
$89

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Last minute flights from Illinois to Ontario

Last minute flight, train and bus deals

7/8Tue
nonstopPorter Airlines
1h 42mMDW-YTZ
8/6Wed
nonstopPorter Airlines
1h 49mYTZ-MDW
$150
7/8Tue
nonstopPorter Airlines
1h 42mMDW-YTZ
7/9Wed
nonstopPorter Airlines
1h 50mYTZ-MDW
$154
7/8Tue
nonstopPorter Airlines
1h 40mMDW-YTZ
7/12Sat
nonstopPorter Airlines
1h 50mYTZ-MDW
$157
7/8Tue
multi-stopUnited Airlines
11h 33mORD-YYZ
7/9Wed
nonstopUnited Airlines
2h 01mYYZ-ORD
$175
7/8Tue
nonstopUnited Airlines
1h 44mORD-YYZ
7/9Wed
nonstopUnited Airlines
1h 59mYYZ-ORD
$189
7/8Tue
nonstopAir Canada
1h 45mORD-YYZ
7/10Thu
multi-stopAir Canada
4h 31mYYZ-ORD
$195
7/8Tue
multi-stopAir Canada
5h 55mORD-YYZ
7/9Wed
multi-stopAir Canada
4h 37mYYZ-ORD
$200
7/7Mon
multi-stopAmerican Airlines
14h 38mORD-YUL
7/9Wed
nonstopAmerican Airlines
2h 35mYUL-ORD
$488
7/7Mon
multi-stopAmerican Airlines
15h 57mORD-YUL
7/9Wed
multi-stopAmerican Airlines
11h 55mYUL-ORD
$503
7/4Fri
nonstopAir Transat
1h 40mMDW-YTZ
7/6Sun
nonstopAir Transat
1h 49mYTZ-MDW
$902

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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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