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Cheap flights from Chicago O'Hare Intl Airport to Ontario from C$ 104

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from O'Hare Intl to Ontario

Keep the following information in mind while searching for O'Hare Intl to Ontario flight deals. Data was last updated 11 September 2025.

Round-trip from

C$ 276

One-way from

C$ 104

Popular in

January

Cheapest in

July

Average price

C$ 382

Good round-trip deal

C$ 276 or less

Good one-way deal

C$ 243 or less
31/10-3/11
  • 31/10-3/11
  • 2 total stops
  • 21h 12m total
  • Chicago to Ontario
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Air Canada
  • Air Canada
  • 30/9
  • Nonstop
  • 1h 43m total
  • Chicago to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price (C$ 53 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 September 2025
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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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Find flight deals from O'Hare Intl to Ontario

Cheapest flights from O'Hare Intl to Ontario
Explore the most affordable flight options available from O'Hare Intl to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Tue 30/99:55 a.m.ORD - YYZ
Nonstop1h 42mAir Canada
Thu 2/108:15 a.m.YYZ - ORD
Nonstop1h 54mAir Canada
Deal found 9/9C$ 262
Sat 4/1010:40 a.m.ORD - YYZ
1 stop5h 44mAir Canada
Sun 5/106:15 a.m.YYZ - ORD
1 stop4h 36mAir Canada
Deal found 9/9C$ 269
Mon 20/107:43 p.m.ORD - YYZ
1 stop17h 22mMultiple Airlines
Thu 23/106:30 a.m.YYZ - ORD
1 stop10h 34mMultiple Airlines
Deal found 9/9C$ 272
Fri 26/96:44 p.m.ORD - YYZ
1 stop18h 21mMultiple Airlines
Tue 30/96:30 a.m.YYZ - ORD
1 stop12h 09mMultiple Airlines
Deal found 9/9C$ 276
Tue 21/107:43 p.m.ORD - YYZ
1 stop17h 22mMultiple Airlines
Thu 23/106:30 a.m.YYZ - ORD
1 stop10h 34mMultiple Airlines
Deal found 9/9C$ 277
Thu 2/1012:52 p.m.ORD - YYZ
Nonstop1h 54mUnited Airlines
Sun 5/107:00 a.m.YYZ - ORD
Nonstop1h 58mUnited Airlines
Deal found 9/9C$ 279
Wed 1/109:20 p.m.ORD - YYZ
1 stop11h 44mUnited Airlines
Thu 2/101:00 p.m.YYZ - ORD
Nonstop2h 01mUnited Airlines
Deal found 9/9C$ 284
Thu 23/105:05 a.m.ORD - YYZ
1 stop8h 00mMultiple Airlines
Mon 27/104:00 p.m.YYZ - ORD
1 stop8h 44mMultiple Airlines
Deal found 9/9C$ 287
Sun 28/95:05 a.m.ORD - YYZ
1 stop8h 00mMultiple Airlines
Tue 30/96:30 a.m.YYZ - ORD
1 stop12h 09mMultiple Airlines
Deal found 9/9C$ 291
Thu 2/1010:11 a.m.ORD - YYZ
1 stop9h 56mMultiple Airlines
Sun 5/104:00 p.m.YYZ - ORD
1 stop26h 16mMultiple Airlines
Deal found 9/9C$ 292
Wed 22/108:40 a.m.ORD - YTZ
1 stop5h 05mAir Canada
Sat 1/113:30 p.m.YTZ - ORD
1 stop5h 30mAir Canada
Deal found 9/9C$ 309
Tue 30/910:40 a.m.ORD - YTZ
1 stop5h 05mAir Canada
Thu 2/1012:25 p.m.YTZ - ORD
1 stop8h 52mAir Canada
Deal found 9/9C$ 328

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 11 September 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to Ontario that are best for you.

Fly from

O'Hare Intl

Fly to

Ontario

Route

Depart

Return

Price

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 7/10

10:40 a.m.-4:45 p.m.

1 stop5h 05m

Toronto Island

Sat 11/10

3:25 p.m.-8:17 p.m.

1 stop5h 52m

C$ 309

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 24/2

3:35 p.m.-9:35 p.m.

1 stop5h 00m

Toronto Island

Sat 28/2

3:30 p.m.-8:00 p.m.

1 stop5h 30m

C$ 309

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Wed 22/10

8:40 a.m.-2:45 p.m.

1 stop5h 05m

Toronto Island

Sat 1/11

3:30 p.m.-8:00 p.m.

1 stop5h 30m

C$ 309

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 10/3

7:15 a.m.-6:13 p.m.

2 stops9h 58m

Toronto Island

Wed 11/3

8:30 a.m.-2:55 p.m.

1 stop7h 25m

C$ 316

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 14/10

9:20 p.m.-10:04 a.m.

1 stop11h 44m

Toronto Pearson Intl

Fri 17/10

7:00 a.m.-7:58 a.m.

Nonstop1h 58m

C$ 317

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 11/10

12:52 p.m.-3:46 p.m.

Nonstop1h 54m

Toronto Pearson Intl

Tue 14/10

6:00 p.m.-11:30 p.m.

1 stop6h 30m

C$ 324

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Wed 22/10

5:05 a.m.-2:05 p.m.

1 stop8h 00m

Toronto Pearson Intl

Sun 26/10

4:00 p.m.-3:49 p.m.

1 stop24h 49m

C$ 333

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sun 12/10

6:08 a.m.-11:47 a.m.

1 stop4h 39m

Toronto Pearson Intl

Wed 22/10

12:15 p.m.-4:11 p.m.

1 stop4h 56m

C$ 338

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 25/12

2:30 p.m.-11:46 p.m.

1 stop8h 16m

Toronto Pearson Intl

Thu 1/1

6:40 p.m.-11:35 p.m.

1 stop5h 55m

C$ 338

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Thu 23/10

10:40 a.m.-4:45 p.m.

1 stop5h 05m

Toronto Island

Sun 26/10

8:30 p.m.-11:18 a.m.

1 stop15h 48m

C$ 355

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 results
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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
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

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, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Region of Ontario (average of C$ 168). Flying from Chicago O'Hare Intl Airport to Region of Ontario in July is currently the most expensive (average of C$ 258). 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?

Find hourly flight availability from O'Hare Intl to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 11 September 2025.

When flying from Chicago O'Hare Intl Airport to Region of Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

Explore weekly flight availability from O'Hare Intl to Ontario. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 11 September 2025.

The most flights from ORD to CAON are scheduled on a Thursday (61 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (40 on average).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated 11 September 2025.
See what other customers who have flown with United Airlines and Air Canada 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
7.4
Good
8,937 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews
Check prices

Entertainment

7.1

Crew

8.1

Boarding

7.7

Comfort

7.3

Overall

7.4

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • 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 4h 39m. Airlines will cover a distance of 702 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    C$ 108 is the cheapest one-way deal found within the past few days, from Air Canada. You may also be able to find cheap deals on United Airlines and Delta, with prices starting from C$ 118 and C$ 130, 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 - Montreal Pierre Elliott Trudeau Intl, Chicago O'Hare Intl - Toronto Pearson 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: Qatar Airways (85%), Envoy Air (80%), SkyWest Airlines (80%).

  • 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$ 472, our data shows the cheapest flight currently is C$ 124. When looking at the most popular route, (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl), you can expect to pay C$ 380 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, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Region of Ontario (average of C$ 168). Flying from Chicago O'Hare Intl Airport to Region of Ontario in July is currently the most expensive (average of C$ 258). 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

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Alternative routes for O'Hare Intl to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Midway to Kelowna flights
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Top 2 airlines flying from O'Hare Intl to Ontario

Discover the top 2 airlines that operate flights from O'Hare Intl to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 11 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 204AverageC$ 412FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 261AverageC$ 357FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from O'Hare Intl to Ontario?

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.

Why should you use Cheapflights to find cheap flight tickets from O'Hare Intl to Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from O'Hare Intl to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from O'Hare Intl to Ontario with no change fees?

Yes! Cheapflights helps users easily find flights from O'Hare Intl to Ontario with no change fees.

Can Cheapflights notify me if prices for flights from O'Hare Intl to Ontario become cheaper?

Yes! Start tracking prices for O'Hare Intl to Ontario flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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