C$ 81 Find Cheap Flights from Illinois to Ontario

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Good to know

Low seasonJanuary
Cheapest flightC$ 81
Best time to beat the crowds (6% less expensive on average)
Most popular time to fly (4% more expensive 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 travellers who flew the route from Illinois to Ontario 
NikhilFlew with Air CanadaORD-YYZJul 2025
small flight, not much storage space as per the passengers. Try to get a booking which is Group 1 or 2 latest.
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 travellers 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 airlines fly most frequently to Ontario?

    Illinois and Ontario are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (133 flights per week), Air Canada (125 flights per week), and Air New Zealand (72 flights per week).

  • How many airports are there in Ontario?

    There are 24 airports in Ontario. The busiest airport is Toronto Pearson Airport (YYZ), with 79% of all flights arriving there.

  • 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 C$ 119.

  • What is the cheapest day to fly to Ontario?

    Based on KAYAK data, the cheapest day to fly to Ontario is Saturday when round-trip tickets can be as cheap as C$ 362. On the other hand, the most expensive day to fly is Monday, when round-trip prices are C$ 580 on average.

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

    The cheapest time of day to fly to Ontario is generally at night, when round-trip flights cost C$ 249 on average. Morning departures are around 21% more expensive than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is C$ 337.

  • 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 C$ 67 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 C$ 67.

  • 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 C$ 360 (return) on average. On the other hand, the most expensive months are October and November, when the average cost of round-trip tickets is C$ 955 and C$ 923 respectively.

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

    To get a below-average price on a flight from Illinois to Ontario, you should book around 4 weeks before departure, which saves you about 48% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

  • How many cities have direct flights to Ontario?

    From Illinois, there are direct flights to Ontario from one city. This city is Chicago and there are 604 direct flights each week.

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

    There are around 87 direct flights from within Illinois to Ontario every day. Most flights (36%) depart in the afternoon.

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

    Each week there are around 604 direct flights from within Illinois to Ontario. The most common day for departures is Sunday, with 17% of flights taking off on this day.

  • How long is the flight to Ontario?

    An average direct flight from Illinois to Ontario takes 8h 57m, covering a distance of 1490 km. The shortest route is Chicago O'Hare Intl Airport (ORD) to Toronto Pearson Intl Airport (YYZ) with an average flight time of 1h 39m.

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

    There aren’t any long-haul (6-12 hour flight duration) or medium-haul (3-6 hour flight duration) flights to Ontario. Instead, there are 604 short-haul flights (up to 3 hour flight duration), with the most arriving from Chicago.

  • What are the most popular destinations in Ontario?

    Based on KAYAK flight searches, the most popular destination is Thunder Bay (70% of total searches to Ontario). The next most popular destination is London (30%).

Reviews of the top 3 airlines flying 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 318 reviews
8.0Comfort
8.7Crew
7.6Food
8.2Boarding
7.0Entertainment
Airline reviews

All good the seats a little tight and no I pad screen

10.0 ExcellentAnonymous, Jul 2025YYZ - RSW
Read more Porter Airlines reviews

All good the seats a little tight and no I pad screen

Everything was good except the fact you charge more for a carry on bag vs a check in bag and to top it off in US$ that was not impressive

Our flight was cancelled at the last minute for maintenance reasons and we were rebooked on a late flight when we purposefully booked our flight to be home early due to work.

Seemed like an old plane. Very noisy. The seat cushions were so old that the metal bracing of the seats were poking through. There was plenty of leg room though.

Flight was delayed over 2 hours, then landed at a different airport!

The whole experience from check in to deboarding was fantastic.

Just an evening before they canceled my ticket and offered me ticket costing 3 x times more than. I will not fall prey to these scams,Will never book through kayak now. Such a bad experience.

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.

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

Weather delay in Chicago?. No sense of urgency to make connection in Chicago for our connecting flight that wasn't delayed. Connection was missed.

It was delayed instead of departing at 9:20pm, we departed at 11pm… putting us in Columbus after 2am! It was awful. Had I known about the delay, I could have spent some time in the United Lounge… I was starving because I started my journey in Budapest… so I was exhausted and hungry. Plus I had to make new arrangements to be picked up at the airport in Columbus, instead of midnight it was 2:30 am after getting luggage and out of airport. Not feasible. I would have just stayed in Chicago for the night and gotten a morning flight.

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

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.

I booked my flight months ago, and checked-in online about 12 hours before the flight. I received an email confirmation of check-in. I had no subsequent communication from Air Canada after my original booking. After arriving at the airport three hours before the flight, as instructed, I waited 90 minutes for an agent to appear to check my bag. I was informed that my flight had been canceled many weeks before, and that flight was no longer being run!! I showed a copy of my check-in confirmation, but no explanation could be found. I was placed on standby for the next flight and the connection. Luckily, those flights were not full and I arrived at my destination. I double checked my email, but I received no update about the flight from Air Canada until the day of the flight.

I was forcefully re-routed to another destination and was delayed a total of 8hours. I have still not received my bags, no one is taking responsibility. The agents at the airport lied to me that I will get to my destination same time as my previous flight where I was forcefully re-routed from.

Flight was delayed by 1.5hrs. Once inside, people had their small handbags on the storage. The crew (male guy) was not helpful in making some space in the storage. Instead, he asked few bags to be checked-in and it was not a great experience. No attempt to help but just followed the things with a straight face. People had their literally small bags and he wouldnt not move from one storage to another even if there was space and would not let us do i as well. Once flight was on, they ran out of Orange juice, really running out of orange juice when the temp were 32.degrees outside. didnt made the sense. Onasking for a extra snack, he made a face as if he was giving me out of his pocket. if the flight was delayed, there could have an attempt to provide something extra incase people did asked.

Our flight was canceled at the last minute. Someone on the flight said the exact same thing happened to her the day before. I will say they helped us book a flight on another airline so that we could still make our vacation with little delay.

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.

Everything you need to know for your flight to Ontario

Cabin class types available on flights to Illinois

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

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