Ontario

$97+ Cheap flights from O'Hare Intl (ORD) to Ontario

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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
May 4 — May 111
We work with more than 300 partners to bring you better travel deals

Find cheap flights from O'Hare Intl to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$170
(Air Canada)

One-way from

$97
(Yatra.com)

Popular in

November

Cheapest in

July

Average price

$335

Good round-trip deal

$344 or less

Good one-way deal

$118 or less
Provider with most accurate pricing for Chicago (CHI)-Toronto (YTO) flight deals.
Provider most trusted by Cheapflights users for Chicago (CHI)-Toronto (YTO) flights.
From Chicago O'Hare Intl to Ontario
One-way flight from Chicago O'Hare Intl to Ontario
Highest demand for flights based on searches. 4% potential increase in price ($14 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Chicago O'Hare Intl to Ontario.
Price to beat on a one-way flight from Chicago O'Hare Intl to Ontario.

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 April 29, 2025.

This Air Canada deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/18:50 amORD - YYZ
Nonstop1h 59mAir Canada
Tue 7/12:00 pmYYZ - ORD
1 stop5h 53mAir Canada
Deal found 4/27$170
This Booking.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:40 amORD - YTZ
1 stop5h 05mAir Canada
Sun 9/73:25 pmYTZ - ORD
1 stop5h 46mAir Canada
Deal found 4/29$200
This United deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/249:45 pmORD - YYZ
1 stop9h 31mMultiple Airlines
Wed 5/282:10 pmYYZ - ORD
Nonstop1h 55mMultiple Airlines
Deal found 4/28$246
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/78:10 amORD - YUL
Nonstop2h 20mAmerican Airlines
Sat 6/72:35 pmYUL - ORD
1 stop10h 22mAmerican Airlines
Deal found 4/29$276
This Flightnetwork deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/47:19 amORD - YUL
Nonstop2h 21mAir Canada
Tue 6/246:15 amYUL - ORD
Nonstop2h 44mAir Canada
Deal found 4/28$295
This United Airlines deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/264:43 pmORD - YYZ
Nonstop1h 54mUnited Airlines
Mon 6/306:00 pmYYZ - ORD
1 stop6h 37mUnited Airlines
Deal found 4/27$299
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/47:19 amORD - YUL
Nonstop2h 21mUnited Airlines
Wed 6/118:20 amYUL - ORD
Nonstop2h 32mUnited Airlines
Deal found 4/29$306
This Delta deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/268:29 amORD - YYZ
1 stop9h 05mDelta
Mon 6/306:30 amYYZ - ORD
1 stop4h 33mDelta
Deal found 4/27$308
This Trip.com deal was found by Cheapflights users on 4/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/266:24 amORD - YYZ
1 stop4h 16mWestJet
Fri 8/812:16 pmYYZ - ORD
1 stop5h 02mWestJet
Deal found 4/27$312
This Mytrip deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/17:35 pmORD - YTZ
2 stops17h 05mMultiple Airlines
Wed 6/48:50 amYTZ - ORD
1 stop4h 06mMultiple Airlines
Deal found 4/29$317
This Delta deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/41:30 pmORD - YUL
1 stop9h 24mDelta
Wed 6/116:00 amYUL - ORD
1 stop5h 03mDelta
Deal found 4/29$320
This American Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/294:00 pmORD - YYZ
1 stop4h 30mAmerican Airlines
Sun 6/16:20 pmYYZ - ORD
Nonstop1h 55mAmerican Airlines
Deal found 4/28$320

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 2,558,603 searches. Data last updated April 29, 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 - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 7/1

8:50 am-11:49 am

Nonstop1h 59m

Toronto Pearson Intl

Tue 7/1

2:00 pm-6:53 pm

1 stop5h 53m

$170

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Thu 9/4

10:40 am-4:45 pm

1 stop5h 05m

Toronto Island

Sun 9/7

3:25 pm-8:11 pm

1 stop5h 46m

$200

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 5/24

9:45 pm-8:16 am

1 stop9h 31m

Toronto Pearson Intl

Wed 5/28

2:10 pm-3:05 pm

Nonstop1h 55m

$246

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sat 6/7

8:10 am-11:30 am

Nonstop2h 20m

Montreal Pierre Elliott Trudeau Intl

Sat 6/7

2:35 pm-11:57 pm

1 stop10h 22m

$276

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 6/4

7:19 am-10:40 am

Nonstop2h 21m

Montreal Pierre Elliott Trudeau Intl

Tue 6/24

6:15 am-7:59 am

Nonstop2h 44m

$295

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 6/26

4:43 pm-7:37 pm

Nonstop1h 54m

Toronto Pearson Intl

Mon 6/30

6:00 pm-11:37 pm

1 stop6h 37m

$299

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 6/4

7:19 am-10:40 am

Nonstop2h 21m

Montreal Pierre Elliott Trudeau Intl

Wed 6/11

8:20 am-9:52 am

Nonstop2h 32m

$306

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 6/26

8:29 am-6:34 pm

1 stop9h 05m

Toronto Pearson Intl

Mon 6/30

6:30 am-10:03 am

1 stop4h 33m

$308

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Mon 5/26

6:24 am-11:40 am

1 stop4h 16m

Toronto Pearson Intl

Fri 8/8

12:16 pm-4:18 pm

1 stop5h 02m

$312

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Sun 6/1

7:35 pm-1:40 pm

2 stops17h 05m

Toronto Island

Wed 6/4

8:50 am-11:56 am

1 stop4h 06m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 52 results
1
2
3
...
6

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 $243). Flying from Chicago O'Hare Intl Airport to Region of Ontario in July is currently the most expensive (average of $359). 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 April 29, 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 April 29, 2025.

The most flights from ORD to CAON are scheduled on a Tuesday (57 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (34 on average).

Rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Region of Ontario ranges from 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

Temperature in Ontario by month

Plan your trip to Ontario by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Region of Ontario, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 April 29, 2025.
Read through reviews of airlines operating flights from Chicago to Ontario, such as Delta, United Airlines and American Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.0
Very good

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good
8.0
Very good

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
8.0
Very good

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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

    The cheapest airlines for a one-way flight from Chicago O'Hare Intl Airport to Region of Ontario are Air Canada ($97), Delta ($123), and United Airlines ($127).

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

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

    Consider Sun Country Air (100%), Finnair (100%) or Korean Air (86%) when booking your flight. These represent the most reliable airlines when flying from Chicago O'Hare Intl Airport to Region of Ontario.

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

    The cheapest flight price from Chicago O'Hare Intl Airport to Region of Ontario is $111. On average you can expect to pay $791. The most popular route, (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl), can usually be booked for $243.

  • 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 $243). Flying from Chicago O'Hare Intl Airport to Region of Ontario in July is currently the most expensive (average of $359). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for O'Hare Intl to Ontario

See prices for flight routes from nearby airports that may be better suited for you.

Top 4 airlines flying from O'Hare Intl to Ontario

Discover the top 4 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 2,558,603 searches. Data last updated April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$119Average$512FlexibilityNo cancel feeOn-time67%
Porter AirlinesCheapest$122Average$287FlexibilityNo cancel feeOn-time52%
American AirlinesCheapest$129Average$366FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$174Average$513FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.