C$ 81 Find Cheap Flights from Chicago O'Hare Airport 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 O'Hare Intl to Ontario departing on 22/9. 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

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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Best Ontario Flight Deals from O'Hare Intl

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Toronto
Toronto1 stopC$ 211
Ottawa
Ottawa1 stopC$ 521
Toronto
Toronto1 stopC$ 211
Ottawa
Ottawa1 stopC$ 521

Cheap Flights from O'Hare Intl to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from O'Hare Intl 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 O'Hare Intl to Ontario

Thu, 4 Sep - Mon, 15 Sep
Air Canada Logo
10:40 a.m. - 1:54 p.m.ORD-YUL
2h 14mdirect
Air Canada Logo
8:20 a.m. - 9:51 a.m.YUL-ORD
2h 31mdirect
C$ 205Air Canada
Find Deal
Tue, 9 Sep - Wed, 10 Sep
United Airlines Logo
9:31 p.m. - 10:04 a.m.ORD-YYZ
11h 33m1 stop
United Airlines Logo
1:00 p.m. - 2:01 p.m.YYZ-ORD
2h 01mdirect
C$ 211United Airlines
Find Deal
Tue, 7 Oct - Thu, 9 Oct
Air Canada Logo
6:20 p.m. - 9:02 p.m.ORD-YYZ
1h 42mdirect
Air Canada Logo
1:00 p.m. - 2:01 p.m.YYZ-ORD
2h 01mdirect
C$ 224Air Canada
Find Deal
Thu, 18 Sep - Wed, 24 Sep
United Airlines Logo
9:31 p.m. - 10:04 a.m.ORD-YYZ
11h 33m1 stop
United Airlines Logo
5:15 p.m. - 6:12 p.m.YYZ-ORD
1h 57mdirect
C$ 242United Airlines
Find Deal
Sun, 7 Sep - Thu, 11 Sep
American Airlines Logo
8:25 a.m. - 11:46 a.m.ORD-YUL
2h 21mdirect
American Airlines Logo
5:15 p.m. - 6:50 p.m.YUL-ORD
2h 35mdirect
C$ 257American Airlines
Find Deal
Sun, 7 Sep - Thu, 11 Sep
American Airlines Logo
7:00 a.m. - 10:57 p.m.ORD-YUL
14h 57m1 stop
American Airlines Logo
5:15 p.m. - 6:50 p.m.YUL-ORD
2h 35mdirect
C$ 271American Airlines
Find Deal
Tue, 23 Sep - Wed, 1 Oct
Delta Logo
6:00 a.m. - 11:29 a.m.ORD-YYZ
4h 29m1 stop
Delta Logo
2:40 p.m. - 7:17 p.m.YYZ-ORD
5h 37m1 stop
C$ 320Delta
Find Deal
Tue, 9 Sep - Wed, 17 Sep
Delta Logo
7:15 a.m. - 11:58 a.m.ORD-YUL
3h 43m1 stop
Delta Logo
5:00 p.m. - 10:37 p.m.YUL-ORD
6h 37m1 stop
C$ 324Delta
Find Deal
Thu, 14 Aug - Sun, 17 Aug
WestJet Logo
5:30 p.m. - 6:45 a.m.ORD-YOW
12h 15m1 stop
WestJet Logo
6:00 a.m. - 4:44 p.m.YOW-ORD
11h 44m1 stop
C$ 656WestJet
Find Deal
Fri, 17 Oct - Mon, 20 Oct
WestJet Logo
5:30 p.m. - 2:56 p.m.ORD-YOW
20h 26m1 stop
WestJet Logo
7:50 a.m. - 4:43 p.m.YOW-ORD
9h 53m1 stop
C$ 688WestJet
Find Deal
Useful Info

KAYAK's insights & trends for O'Hare Intl to Ontario flights

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

What is the cheapest Chicago O'Hare Intl Airport to Ontario flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Chicago O'Hare Intl Airport to Ontario.

The cheapest ticket to Ontario from Chicago O'Hare Intl Airport found in the last 72 hours was to Toronto, at C$ 111 round-trip. The most popular route is from Chicago O'Hare Intl Airport (ORD) to Toronto Pearson Intl Airport (YYZ), and the cheapest round-trip airline ticket found on this route in the last 72 hours was C$ 111.

Can I save money by flying with a layover from Chicago O'Hare Intl 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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at C$ 463 on average.

What is the cheapest month to fly from Chicago O'Hare Intl 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 O'Hare Intl 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 O'Hare Intl Airport to Ontario is April, when tickets cost C$ 371 (return) on average. On the other hand, the most expensive months are January and February, when the average cost of round-trip tickets is C$ 536 and C$ 517 respectively.

What’s the cheapest day of the week to fly from Chicago O'Hare Airport to Ontario?

The average price of all round-trip flights from Chicago O'Hare Intl Airport to Ontario clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Chicago O'Hare Airport to Ontario, look for departures on Saturdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Ontario, Friday is the cheapest day to fly and Tuesday is the most expensive.

How far in advance should I book a flight from Chicago O'Hare Intl Airport to Ontario?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago O'Hare Intl Airport to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Chicago O'Hare Intl Airport 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.


Good to know

Low seasonJanuary
High seasonJuly
Cheapest flightC$ 81
Best time to beat the crowds but there is an average 25% increase in price.
Most popular time to fly and prices are also 32% lower on average.
Flight from Chicago to Montreal

Flights from O'Hare Intl to Ontario: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from O'Hare Intl 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 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 - booking Ontario flights

  • How does KAYAK find such low prices on flights from Chicago O'Hare Airport 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 O'Hare Airport to Ontario.

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

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

  • 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$ 294 on average. Morning departures are around 5% 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$ 342.

Top tips for finding cheap flights to Ontario

  • Looking for a cheap flight? 25% of our users found tickets from Chicago O'Hare Airport to the following destinations at these prices or less: Montreal C$ 257 one-way - C$ 157 round-trip; Toronto C$ 171 one-way - C$ 238 round-trip

Top airlines flying from O'Hare Intl 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 O'Hare Intl 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.
7.4
United AirlinesOverall score based on 8790 reviews
6.6Food
7.7Boarding
7.0Entertainment
7.3Comfort
8.1Crew
Airline reviews

The boarding of took of late.The presentation of the food was horrable as was the tast of the food was cold and tastless.

4.0 OkayJ, May 2025ORD - EDI
Read more United Airlines reviews

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.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

I do prefer to fly United and have always had excellent service, except for bad weather. Flights are on time and staff is alway curtious and helpful

They switched out gate from terminal 1 to terminal two ten minutes before boarding. So we had to make a 20 min crazy fast walk to a different terminal. Then we boarded the plane and waited for over 40 minutes until push back. Brutal

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.

Miserable staff as it was a late/delayed flight and crew wasn’t in the best spirits. Completely understood as neither was most of the passengers. Still unacceptable l.

It was a short flight, and no entertainment. That was not a problem for us, but there is no option for "not applicable". There was a bit of turbulence, so there was no food service.

the fact air Canada changed my flight from 850 PM to 815 AM with zero regard to the plans i made that last day, the cost i lost out on as things were non refundable amd shortening my first vacation in 7 years sickened me. when we purchase a service thats whats we expect. when we want to change the service we have to pay for that option but you do whatever you want . i called accessibility dept as i have a cpap and an implanted loop recorder first person said no problem just let security know you cant go thru scanners. then i got an email saying i had to fill out a fit to fly form . which again there was NO need to have that none. But that cost me money and time to have a doctor fill it out. then when i went to check in online i was declined i had to see a person at the airport instead. i couldnt get my boarding pass like everyone elseso here I was contacting air canada so I would have a easy travel experience and it ended up being a nightmare with more work for me, more cost and time. the flight itself was great the nightmare around it i will never subject myself to again. i tried to stick with supporting Canada but Air Canada was not worth supporting. very disappointed especially with a dept that is supposed to help disabled people not make an already challenging event not worth going thru at all.

Most courteous, helpful employees and all flights were on time.

All was good except for the seats, not very comfy.

Everything you need to know for your flight from O'Hare Intl to Ontario

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