$93 Find Cheap Flights from Chicago to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to Ontario departing on 5/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to Ontario, as well as popular online travel agencies
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Cheap Flights from Chicago to Ontario

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Toronto
Torontononstop$221
Ottawa
Ottawa1 stop$316
Thunder Bay
Thunder Bay1 stop$541
Toronto
Torontononstop$221
Ottawa
Ottawa1 stop$316
Thunder Bay
Thunder Bay1 stop$541

Book Cheap Chicago to Ontario Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to Ontario

Thu, Apr 23 - Fri, May 1
Porter Airlines Logo
11:00 am - 5:45 pm
MDW
-
YUL
5h 45m
1 stop
Porter Airlines Logo
6:30 am - 9:45 am
YUL
-
MDW
4h 15m
1 stop
$216Porter Airlines
Thu, Apr 23 - Fri, May 1
Porter Airlines Logo
11:00 am - 5:45 pm
MDW
-
YUL
5h 45m
1 stop
Porter Airlines Logo
6:30 am - 9:45 am
YUL
-
MDW
4h 15m
1 stop
$217Porter Airlines
Fri, Jun 5 - Mon, Jun 8
Porter Airlines Logo
10:25 am - 5:15 pm
MDW
-
YUL
5h 50m
1 stop
Porter Airlines Logo
6:30 am - 9:40 am
YUL
-
MDW
4h 10m
1 stop
$221Porter Airlines
Sat, Jun 20 - Tue, Jun 23
Porter Airlines Logo
10:25 am - 1:05 pm
MDW
-
YTZ
1h 40mnonstop
Porter Airlines Logo
8:50 am - 9:40 am
YTZ
-
MDW
1h 50mnonstop
$221Porter Airlines
Wed, Apr 15 - Mon, Apr 27
Porter Airlines Logo
11:00 am - 1:42 pm
MDW
-
YTZ
1h 42mnonstop
Porter Airlines Logo
9:25 am - 10:15 am
YTZ
-
MDW
1h 50mnonstop
$222Porter Airlines
Wed, May 27 - Mon, Jun 8
Porter Airlines Logo
3:20 pm - 6:00 pm
MDW
-
YTZ
1h 40mnonstop
Porter Airlines Logo
1:45 pm - 2:35 pm
YTZ
-
MDW
1h 50mnonstop
$223Porter Airlines
Thu, Apr 16 - Sun, May 3
Multiple Airlines Logo
7:30 am - 1:20 pm
MDW
-
YTZ
4h 50m
1 stop
Multiple Airlines Logo
8:55 am - 9:45 am
YTZ
-
MDW
1h 50mnonstop
$225Multiple Airlines
Thu, Jul 9 - Tue, Jul 14
Delta Logo
1:49 pm - 11:14 pm
MDW
-
YYZ
8h 25m
1 stop
Delta Logo
12:09 pm - 6:25 pm
YYZ
-
MDW
7h 16m
1 stop
$243Delta
Fri, May 1 - Sun, May 3
Delta Logo
9:29 am - 6:31 pm
MDW
-
YYZ
8h 02m
1 stop
Delta Logo
6:10 am - 8:47 am
YYZ
-
MDW
3h 37m
1 stop
$247Delta
Sat, Jul 25 - Sat, Aug 1
Delta Logo
9:20 am - 5:24 pm
MDW
-
YYZ
7h 04m
1 stop
Delta Logo
12:09 pm - 6:02 pm
YYZ
-
MDW
6h 53m
1 stop
$250Delta
Booking Insights

KAYAK's insights & trends for Chicago to Ontario flights

Get data-powered insights and trends into flights from Chicago to Ontario to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Chicago Midway Airport to Ontario flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Ontario from Chicago Midway Airport found in the last 72 hours was to Toronto, at $184 round-trip. The most popular route is from 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 $184.

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

The average price for all round-trip flights from Chicago Midway Airport to Ontario depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Ontario is generally in the morning, when round-trip flights cost $257 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. 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 $258.

Can I save money by flying with a layover from Chicago Midway Airport to Ontario?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $260, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Chicago Midway Airport to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago Midway Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago Midway Airport to Ontario is July, when tickets cost $179 (return) on average. On the other hand, the most expensive months are June and November, when the average cost of round-trip tickets is $442 and $287 respectively.

Good to know

Low seasonJanuary
Cheapest flight$93
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 29% lower on average.
Flight from Chicago Midway Airport to Toronto Island

FAQs - booking Ontario flights

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Chicago 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 Chicago 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 Chicago 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 Chicago 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 Chicago to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Chicago to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Chicago to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago 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 430 reviews
7.6Food
7.0Entertainment
8.6Crew
8.0Comfort
8.2Boarding
Airline reviews

There was No Flight. Both Kayak and Porter refused to honor my booking. I was asked for an additional 1,300 $ CAD to keep the flight. After several emails to both Kayak and Porter I was ignored. I had to cancel my March spring break plans, dog kennel and hotel. I had to re-book another vacation to Nassau in January w Expedia. I had to re-book a new vacation for spring break. Porter and Kayak both blamed each other and would not work together to fix this. Not cool.

2.0 MediocreAnonymous, Mar 2026
NAS - YOW
Read more Porter Airlines reviews

There was No Flight. Both Kayak and Porter refused to honor my booking. I was asked for an additional 1,300 $ CAD to keep the flight. After several emails to both Kayak and Porter I was ignored. I had to cancel my March spring break plans, dog kennel and hotel. I had to re-book another vacation to Nassau in January w Expedia. I had to re-book a new vacation for spring break. Porter and Kayak both blamed each other and would not work together to fix this. Not cool.

Even tho the flight was a bit delayed the team was apologetic. Everyone was friendly and efficient.

The flight was a little delayed but check in was easy and boarding was quick. Luggage was quickly available and everything worked great.

The Flight took off 2hrs late because there was no pilot showing up when the flight was ready to board.. Though the cabin crew was present and had prepared the plane, the FO turned around after 15 min and went away. A crew to fly the plane finally arrived over an hour later and we were able to board 1h30 min later than planned time... until everything was loaded, we left 2h late from the gate. This was a small plane, so don't expect any Entertainment... Wi-Fi access on board would work, but took an awful amount of time to figure out and get it work (I'm an IT person). Flying as VIPorter customer, I was expecting at least some warm meal, but everything served was just cold.. except the coffee maybe. Even in so-called VIPorter seats, space is cramped and trays are so tiny, you can barely setup your food. Flight caught up during the coast-to-coast crossing and was able to recoup about 45 min from the delay.. still arrived very late in Vancouver and had to wait a long time to get our registered bags. Let's see how the return flight will be in a few days..

The flight booking code given by Kayak was not the correct one used by the airline. I had to call to get the correct one. It was never sent to me. Totally unacceptable!

Due to a known technical error that Porter has not fixed in over a year, I was unable to check in the children on my reservation online and had to do it at the airport. Upon check in, there were no seats together, which was an issue as we had young children. The gate agent did manage to seat us together by moving other passengers, which was appreciated, but the other passengers were never informed, leading to confusion and delay upon boarding. The flight was over an hour late; no explanation or apology was ever issued. The bags on Porter take a long time to arrive--over half an hour at Hamilton on my inbound flight, and not much better on my return to Edmonton.

Much roomer than air Canada! Great flight for the price. No complaints

On my e-boarding pass it shows free wifi, yet the plane I was on didn’t have wifi. Please remove false advertising from your website and boarding passes

As a first time flyer with Porter I was happy with the service and comfort of the airline.

3.5 hr delay for a 1 hr work flight. No information as to why the delay until 20 mins before boarding.

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I haven’t flown economy in over 20 years but it was not bad. Room by my feet for my bag and seat was roomy enough. Surprised in a good way.

The flight was delayed 90 minutes The Gate was wrong The Restroom on Aircraft was not clean There was a half used water bottle in my seat

Delta is always a wonderful experience. A clean plane and the crew is really friendly.

Too many people are taking up space in the overhead bins with their extra piece of luggage. Since they cannot fit their backpacks or extra luggage piece under the seat in front of them, they store it in the overheads and thus taking up room for other passengers. It wasn’t only one or two persons; more like 12 or 13 passengers.

Excellent service, I love the soft blush pink mood lighting on the 767-400ER during meal service. The overhead gasper vents on the 767-400ER were also very strong with a lot of airflow to keep me comfortable on my flight.

This was the worse experience. They delayed our flight twice and we still had to find another flight to get home sooner which was alos delayed. Also, the flight attendant named Ginny on DL9890 leaving at 4:13pm on 3/23/26 was extremely rude.

I love Delta the flight attendants were personable and the flight arrived 1/2 earlier thanks expected. All a plus. The gate agent was a bit flustered but even with that I still had a good experience. Her supervisor assisted me.

Got to fly my favorite plane, the Boeing 767-400ER, to Milan. The soft blush pink mood lighting during meal service was very beautiful and gorgeous. The service was top-notch, and our flights were on time. I highly recommend Delta.

I am still at the Airport! Delayed Delayed and Delyaed

Everything you need to know for your flight from Chicago to Ontario

Information on your arrival and departure airports