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Find cheap flights from Chicago to Ontario from C$ 151

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 29/5. 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
0 bags
Sat 1/6
Sat 8/6

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Best Ontario Flight Deals

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Toronto
Toronto1 stopC$ 261
Ottawa
Ottawa1 stopC$ 450
Thunder Bay
Thunder Bay1 stopC$ 709
London
London1 stopC$ 961

Good to know

Low season

January

High season

July

Cheapest flight

C$ 151
Best time to beat the crowds (19% less expensive on average)
Most popular time to fly (9% more expensive on average)
Flight from Chicago O'Hare 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 to Ontario from Chicago 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 to Ontario with an airline and back to Chicago 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 to Ontario from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding cheap flights to Ontario

  • Morning departure is around 30% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

Top airline flying from Chicago to Ontario

 
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.
8.3
EVA AirOverall score based on 1546 reviews
8.0Entertainment
8.4Boarding
8.2Comfort
8.6Crew
7.9Food
Airline reviews

Fast and efficient boarding. Flight was on time. Service was very good for our long flight. First time flying with this airline and I would highly recommend.

10.0 ExcellentDamian, Mar. 2024LAX - TPE
Read more about EVA Air reviews

Fast and efficient boarding. Flight was on time. Service was very good for our long flight. First time flying with this airline and I would highly recommend.

Eva Air's Business Class is pretty decent. With the given price, I think that the food can be better.

Pleasant, comfortable, and entertaining. All told, ZERO issues with it. And sadly, so far the flight was WAY more comfortable than the hellhole that is "Lambug Beach Resort" at Badian Beach!

It was a pleasant fly with Eva Air from NYC to Taipei. The crew were friendly and the food was exceeded my expectation.

Eva air is a good airline. The seats on the way to Taipei could have certainly been more comfortable, but all in all it was a pretty good experience.

Overall the flight was what might be expected for a long haul flight to Asia in economy class. The cabin crew was attentive and the food was good. Boarding was fairly fast and easy. The one thing I found frustrating was the EVA app. It is terrible. Trying to do anything on it was almost impossible.

EVA would not help with ticket issue since they were purchased through a travel agency. Even though it was EVA ticket stock. Travel agency Budget Air didn't reissue ticket after airline change which I didn’t learn until trying to checkin on Christmas Day and there was no contact number for the agency to help. I will never use Budget Air to purchase flight again and disappointed in EVA’s refusal to help. Thankfully just under 12 hrs before departure someone from the agency was available to reissue tickets. I was starting to think we would not be flying and the stress trying to resolve was completely unacceptable.

seamless check in/ friendly staff, food is good, always love flying Eva Air

Very uncomfortable and crowded seats in economy. Flight attendant refused request to move to nearby unused seat with more legroom because “It was more money for that seat”. It was also near impossible to reach airline directly by phone. Waits upwards of an hour and not very helpful customer service representatives after long wait. Cannot recommend this airline.

My experience with Eva sir was good except the long walk in LA Lex, that was inconvenient for my age,

Book cheap flights from Chicago to Ontario

Recent round-trip flight deals

28/5Tue
1 stop
18h 20mORD-YYZ
5/6Wed
1 stop
12h 10mYYZ-ORD
C$ 261
28/5Tue
1 stop
18h 20mORD-YYZ
4/6Tue
1 stop
12h 10mYYZ-ORD
C$ 267
28/5Tue
directPorter Airlines
1h 42mMDW-YTZ
4/6Tue
directPorter Airlines
1h 47mYTZ-MDW
C$ 350
22/5Wed
directPorter Airlines
1h 42mMDW-YTZ
1/6Sat
directPorter Airlines
1h 47mYTZ-MDW
C$ 352
14/6Fri
directUnited Airlines
1h 43mORD-YYZ
19/6Wed
directUnited Airlines
1h 57mYYZ-ORD
C$ 428
22/5Wed
directAir Canada
1h 45mORD-YYZ
7/7Sun
directAir Canada
1h 56mYYZ-ORD
C$ 432
25/6Tue
1 stopAir Canada
5h 04mORD-YTZ
3/7Wed
1 stopAir Canada
5h 20mYTZ-ORD
C$ 439
6/6Thu
1 stopAmerican Airlines
8h 10mORD-YYZ
11/6Tue
directAmerican Airlines
1h 55mYYZ-ORD
C$ 446
15/5Wed
directUnited Airlines
1h 53mORD-YYZ
22/5Wed
directUnited Airlines
2h 04mYYZ-ORD
C$ 447
31/5Fri
directAmerican Airlines
1h 40mORD-YYZ
7/6Fri
1 stopAmerican Airlines
5h 35mYYZ-ORD
C$ 451

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Recent one-way flight deals

29/5Wed
1 stop
14h 16mORD-YTZ
C$ 151
29/5Wed
1 stop
9h 01mORD-YTZ
C$ 153
18/6Tue
directPorter Airlines
1h 42mMDW-YTZ
C$ 161
6/6Thu
directPorter Airlines
1h 42mMDW-YTZ
C$ 162
31/7Wed
directAmerican Airlines
1h 35mORD-YYZ
C$ 183
4/7Thu
1 stopAir Canada
5h 57mORD-YYZ
C$ 190
26/5Sun
directAir Canada
1h 45mORD-YYZ
C$ 191
7/6Fri
1 stopAmerican Airlines
7h 53mORD-YYZ
C$ 194
17/6Mon
1 stopDelta
6h 34mMDW-YYZ
C$ 194
19/6Wed
1 stopDelta
7h 38mORD-YYZ
C$ 195

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Last minute flights from Chicago to Ontario

Last minute flight, train and bus deals

7/5Tue
multi-stop
22h 32mORD-YYZ
11/5Sat
multi-stop
12h 53mYYZ-ORD
C$ 531
7/5Tue
multi-stop
22h 32mORD-YYZ
11/5Sat
multi-stop
19h 48mYYZ-ORD
C$ 533
7/5Tue
directPorter Airlines
1h 42mMDW-YTZ
11/5Sat
directPorter Airlines
1h 47mYTZ-MDW
C$ 538
7/5Tue
directPorter Airlines
1h 42mMDW-YTZ
10/5Fri
directPorter Airlines
1h 47mYTZ-MDW
C$ 584
7/5Tue
directAir Canada
1h 53mORD-YYZ
10/5Fri
directAir Canada
1h 54mYYZ-ORD
C$ 637
7/5Tue
multi-stopAir Canada
5h 51mORD-YYZ
10/5Fri
directAir Canada
1h 54mYYZ-ORD
C$ 644
7/5Tue
multi-stopWestJet
6h 17mORD-YYZ
10/5Fri
multi-stopWestJet
4h 29mYYZ-ORD
C$ 647
7/5Tue
multi-stopWestJet
7h 59mMDW-YYZ
11/5Sat
multi-stopWestJet
5h 25mYYZ-MDW
C$ 647
7/5Tue
multi-stopAmerican Airlines
7h 40mORD-YYZ
5/6Wed
directAmerican Airlines
1h 56mYYZ-ORD
C$ 659
7/5Tue
directAmerican Airlines
1h 40mORD-YYZ
21/5Tue
directAmerican Airlines
1h 55mYYZ-ORD
C$ 707

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Flights to Ontario

Return flight deals:

Ontario - Chicago

Cabin classes:

C$ 1,358
C$ 172