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Cheap flights from Chicago O'Hare Intl Airport to Ontario from C$ 133

ORD — YYZ
25 Nov — 2 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from O'Hare Intl to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from O'Hare Intl to Ontario

Wed 11/1112:15 p.m. -
Nonstop1h 45m
Thu 12/114:35 p.m. -
Nonstop2h 05m
Deal found 21/10C$ 296
Wed 9/126:20 p.m. -
Nonstop1h 45m
Wed 16/124:35 p.m. -
Nonstop2h 05m
Deal found 25/10C$ 303
Wed 18/111:55 p.m. -
Nonstop1h 47m
Fri 20/119:50 a.m. -
1 stop6h 10m
Deal found 21/10C$ 304
Thu 12/116:20 p.m. -
Nonstop1h 45m
Sun 15/114:35 p.m. -
Nonstop2h 05m
Deal found 21/10C$ 305
Thu 3/126:20 p.m. -
Nonstop1h 45m
Mon 7/124:35 p.m. -
Nonstop2h 05m
Deal found 21/10C$ 307
Thu 3/128:45 a.m. -
Nonstop1h 42m
Sun 6/126:55 p.m. -
Nonstop2h 03m
Deal found 21/10C$ 307
Thu 12/1112:15 p.m. -
Nonstop1h 45m
Mon 16/114:35 p.m. -
Nonstop2h 05m
Deal found 21/10C$ 308
Thu 19/116:20 p.m. -
Nonstop1h 45m
Thu 26/114:35 p.m. -
Nonstop2h 05m
Deal found 24/10C$ 310
Sat 14/116:20 p.m. -
Nonstop1h 45m
Sun 15/1110:30 a.m. -
Nonstop2h 05m
Deal found 24/10C$ 312
Sat 14/116:20 p.m. -
Nonstop1h 45m
Mon 16/114:35 p.m. -
Nonstop2h 05m
Deal found 22/10C$ 314
Wed 18/1112:15 p.m. -
Nonstop1h 45m
Fri 20/114:35 p.m. -
Nonstop2h 05m
Deal found 21/10C$ 315
Wed 18/116:20 p.m. -
Nonstop1h 45m
Sun 22/114:35 p.m. -
Nonstop2h 05m
Deal found 21/10C$ 317

Find flight deals from O'Hare Intl to Ontario

Round-trip from

C$ 296

One-way from

C$ 133

Popular in

October

Cheapest in

January

Average price

C$ 468

Good round-trip deal

C$ 290 or less

Good one-way deal

C$ 201 or less
Porter Airlines
  • Porter Airlines
  • 11/11-12/11
  • Nonstop
  • 3h 50m total
  • Chicago to Ontario
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Porter Airlines
  • Porter Airlines
  • 25/1-31/12
  • Nonstop
  • 1h 46m total
  • Chicago to Ontario
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 44 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
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Average for round-trip flights in October 2026
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Price to beat on a round-trip flight from Chicago O'Hare Intl to Ontario.
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Price to beat on a one-way flight from Chicago O'Hare Intl to Ontario.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoToronto

ORD Chicago O'Hare Intl - YTZ Toronto Island

ORDYTZ

Chicago O'Hare Intl

Fri 27/11

6:20 p.m.-9:05 p.m.

Nonstop1h 45m

Toronto Island

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 154

ChicagoToronto

ORD Chicago O'Hare Intl - YTZ Toronto Island

ORDYTZ

Chicago O'Hare Intl

Sun 6/12

7:05 a.m.-2:21 p.m.

1 stop6h 16m

Toronto Island

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 155

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Sat 2/1

6:54 a.m.-9:47 a.m.

Nonstop1h 53m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 158

ChicagoToronto

ORD Chicago O'Hare Intl - YTZ Toronto Island

ORDYTZ

Chicago O'Hare Intl

Wed 25/11

1:55 p.m.-9:36 p.m.

1 stop6h 41m

Toronto Island

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 169

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Mon 14/12

10:57 a.m.-5:49 p.m.

1 stop5h 52m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 171

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Thu 3/12

2:30 p.m.-11:26 p.m.

1 stop7h 56m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 171

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Tue 1/12

8:39 a.m.-1:35 p.m.

1 stop3h 56m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 174

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Wed 25/11

2:44 p.m.-10:57 p.m.

1 stop7h 13m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 186

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Sat 28/11

11:19 a.m.-5:20 p.m.

1 stop5h 01m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 186

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Sun 22/11

5:55 a.m.-2:25 p.m.

1 stop7h 30m

Toronto Pearson Intl

Wed 31/12

12:00 a.m.-11:00 p.m.

Nonstop0h 00m

C$ 186

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/10

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from O'Hare Intl to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from O'Hare Intl with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Chicago O'Hare Intl Airport to Ontario

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Region of Ontario?

Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Region of Ontario (average of C$ 395). Flying from Chicago O'Hare Intl Airport to Region of Ontario in March is currently the most expensive (average of C$ 564). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ORD to ON?

It’s typically best to fly out from Chicago O'Hare Intl Airport to Region of Ontario in the evening. Doing so could potentially save you 42% on the flight price compared to flying in the morning, which is usually more expensive.

Weekly flight availability from Chicago O'Hare Intl Airport to Region of Ontario

The most flights from ORD to CAON are scheduled on a Saturday (61 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (17 on average).

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to Region of Ontario?

Airfare is below average for this route at the moment.
Chicago O'Hare Intl Airport to Region of Ontario flights typically cost between C$ 340 and C$ 653 in December.
The cheapest round-trip price found within the last 5 days was C$ 307 on Air Canada (3 Dec-6 Dec).

How far ahead should I book a flight from Chicago O'Hare Intl Airport to Region of Ontario?

To ensure you get the cheapest price possible for a flight from Chicago O'Hare Intl Airport to Region of Ontario, you should look to book at least 71 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to Region of Ontario?

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Region of Ontario flight should consider departing on Thursday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Ontario

See what other customers who have flown with United Airlines,Air Canada, andAmerican Airlines from Chicago O'Hare Intl Airport to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.3
Good
10,439 reviews
Check prices

Boarding

7.7

Food

6.7

Overall

7.3

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
United Airlines
7.3
Good
10,439 reviews
United Airlines
7.3
Good
10,439 reviews
Check prices

Boarding

7.7

Food

6.7

Overall

7.3

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
Air Canada
7.1
Good
11,815 reviews
United Airlines
7.3
Good
10,439 reviews
Check prices

Boarding

7.7

Food

6.7

Overall

7.3

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible
American Airlines
7.0
Good
12,194 reviews
United Airlines
7.3
Good
10,439 reviews
Check prices

Boarding

7.7

Food

6.7

Overall

7.3

Comfort

7.3

Crew

8.1

Entertainment

7.1

Reviews

1 / 20
2.0
Mediocre

Dawn,Aug 2026

ORD - DEN

I missed my connecting flight because our plane took off ten minutes late and then when we got to the airport another plane was in our shoot waiting to get fueled up and that took 30 minutes so I missed my connecting flight. I asked if I could get off and they assured me the plane would most likely wait for me since they know what time the planes get in because of an app. I was not happy. I had to wait till 7:25 to board the next flight and then that was delayed. Gates changed till 9:20. Terrible

Related info for your journey

  • How long is the flight from Chicago O'Hare Intl Airport to Region of Ontario?

    Departing from Chicago O'Hare Intl Airport to Region of Ontario will take you 1h 41m. Airlines will cover a distance of 716 km. Most flights are nonstop.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Region of Ontario one-way?

    C$ 113 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on United Airlines and Air Canada, with prices starting from C$ 125 and C$ 140, respectively.

  • What are the most popular routes from Chicago O'Hare Intl Airport to Region of Ontario?

    When deciding which route to take from Chicago O'Hare Intl Airport to Region of Ontario consider Chicago O'Hare Intl - Toronto Pearson Intl, Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl or Chicago O'Hare Intl - Toronto Island as they are the most popular.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to Region of Ontario?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago O'Hare Intl Airport to Region of Ontario on time: Atlas Air (88%), Korean Air (87%), Republic Airways (84%).

  • What are the cheapest flights from Chicago O'Hare Intl Airport to Region of Ontario?

    While on average a flight from Chicago O'Hare Intl Airport to Region of Ontario is generally C$ 378, our data shows the cheapest flight currently is C$ 163. When looking at the most popular route, (Chicago O'Hare Intl - Toronto Pearson Intl), you can expect to pay C$ 291 for that flight.

  • Can I find deals for flights from O'Hare Intl to Ontario that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to Ontario.

  • Can I find deals for business class flights from O'Hare Intl to Ontario?

    Yes. Cheapflights offers flight deals from O'Hare Intl to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to Region of Ontario?

    Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Region of Ontario (average of C$ 395). Flying from Chicago O'Hare Intl Airport to Region of Ontario in March is currently the most expensive (average of C$ 564). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from O'Hare Intl to Ontario

AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapestC$ 136AverageC$ 665FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
Air CanadaCheapestC$ 289AverageC$ 448FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 351AverageC$ 446FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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Deals for O'Hare Intl to Ontario flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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