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$80+ 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 6/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$177
(United Airlines)

One-way from

$80
(Booking.com)

Popular in

November

Cheapest in

July

Average price

$280

Good round-trip deal

$236 or less

Good one-way deal

$113 or less
From Chicago O'Hare Intl to Ontario
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One-way flight from Chicago O'Hare Intl to Ontario
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Highest demand for flights based on searches. 6% potential increase in price ($21 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Booking.com deal was found by Cheapflights users on 6/12. 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.
Mon 9/292:00 pmORD - YYZ
Nonstop1h 43mAir Canada
Wed 10/14:40 pmYYZ - ORD
Nonstop1h 53mAir Canada
Deal found 6/12$173
This United Airlines deal was found by Cheapflights users on 6/10. 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 9/189:31 pmORD - YYZ
1 stop11h 33mUnited Airlines
Wed 9/245:15 pmYYZ - ORD
Nonstop1h 57mUnited Airlines
Deal found 6/10$177
This lastminute.com deal was found by Cheapflights users on 6/12. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2910:40 amORD - YTZ
1 stop5h 05mAir Canada
Wed 10/110:25 amYTZ - ORD
1 stop5h 30mAir Canada
Deal found 6/12$202
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Tue 7/156:00 amORD - YYZ
1 stop5h 05mAmerican Airlines
Tue 7/153:45 pmYYZ - ORD
1 stop6h 46mAmerican Airlines
Deal found 6/12$206
This Kissandfly.com deal was found by Cheapflights users on 6/11. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/269:25 pmORD - YYZ
1 stop10h 54mMultiple Airlines
Sat 8/29:45 amYYZ - ORD
1 stop7h 48mMultiple Airlines
Deal found 6/11$232
This Delta deal was found by Cheapflights users on 6/11. 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.
Tue 9/236:00 amORD - YYZ
1 stop4h 29mDelta
Wed 10/12:40 pmYYZ - ORD
1 stop5h 37mDelta
Deal found 6/11$234
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 7/228:25 pmORD - YUL
1 stop12h 20mAmerican Airlines
Wed 7/2312:30 pmYUL - ORD
Nonstop2h 35mAmerican Airlines
Deal found 6/11$272
This Mytrip deal was found by Cheapflights users on 6/12. 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 7/278:40 amORD - YUL
Nonstop2h 18mAir Canada
Sun 8/35:00 amYUL - ORD
1 stop5h 09mAir Canada
Deal found 6/12$273
This Delta deal was found by Cheapflights users on 6/11. 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 10/166:00 amORD - YUL
1 stop10h 04mDelta
Sun 10/196:00 amYUL - ORD
1 stop7h 39mDelta
Deal found 6/11$280
This Mytrip deal was found by Cheapflights users on 6/11. 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.
Thu 7/104:37 pmORD - YTZ
1 stop19h 31mMultiple Airlines
Sun 7/138:45 amYTZ - ORD
1 stop14h 04mMultiple Airlines
Deal found 6/11$318
This Kiwi.com deal was found by Cheapflights users on 6/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/78:12 pmORD - YUL
2 stops15h 18mMultiple Airlines
Thu 9/116:35 pmYUL - ORD
1 stop5h 35mMultiple Airlines
Deal found 6/11$329
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Mon 7/145:58 pmORD - YUL
Nonstop2h 31mUnited Airlines
Mon 7/219:45 amYUL - ORD
Nonstop2h 39mUnited Airlines
Deal found 6/11$354

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 June 12, 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

Mon 9/29

2:00 pm-4:43 pm

Nonstop1h 43m

Toronto Pearson Intl

Wed 10/1

4:40 pm-5:33 pm

Nonstop1h 53m

$173

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 9/18

9:31 pm-10:04 am

1 stop11h 33m

Toronto Pearson Intl

Wed 9/24

5:15 pm-6:12 pm

Nonstop1h 57m

$177

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Mon 9/29

10:40 am-4:45 pm

1 stop5h 05m

Toronto Island

Wed 10/1

10:25 am-2:55 pm

1 stop5h 30m

$202

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 7/15

6:00 am-12:05 pm

1 stop5h 05m

Toronto Pearson Intl

Tue 7/15

3:45 pm-9:31 pm

1 stop6h 46m

$206

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 7/26

9:25 pm-9:19 am

1 stop10h 54m

Toronto Pearson Intl

Sat 8/2

9:45 am-4:33 pm

1 stop7h 48m

$232

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 9/23

7:00 am-11:29 am

1 stop3h 29m

Toronto Pearson Intl

Fri 9/26

3:59 pm-6:38 pm

1 stop3h 39m

$234

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Tue 7/22

8:25 pm-9:45 am

1 stop12h 20m

Montreal Pierre Elliott Trudeau Intl

Wed 7/23

12:30 pm-2:05 pm

Nonstop2h 35m

$272

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Sun 7/27

8:40 am-11:58 am

Nonstop2h 18m

Montreal Pierre Elliott Trudeau Intl

Sun 8/3

5:00 am-9:09 am

1 stop5h 09m

$273

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 10/16

6:00 am-5:04 pm

1 stop10h 04m

Montreal Pierre Elliott Trudeau Intl

Sun 10/19

6:00 am-12:39 pm

1 stop7h 39m

$280

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Thu 7/10

4:37 pm-1:08 pm

1 stop19h 31m

Toronto Island

Sun 7/13

8:45 am-9:49 pm

1 stop14h 04m

$318

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 52 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 $243). Flying from Chicago O'Hare Intl Airport to Region of Ontario in July is currently the most expensive (average of $353). 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 June 12, 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 June 12, 2025.

The most flights from ORD to CAON are scheduled on a Thursday (62 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (27 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 June 12, 2025.
Read through reviews of airlines operating flights from Chicago to Ontario, such as Japan Airlines, Delta and United Airlines. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,489 reviews

Entertainment

7.8

Boarding

8.4

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
Japan Airlines
8.3
Very good
1,489 reviews
Japan Airlines
8.3
Very good
1,489 reviews

Entertainment

7.8

Boarding

8.4

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
Delta
8.0
Very good
7,950 reviews
Japan Airlines
8.3
Very good
1,489 reviews

Entertainment

7.8

Boarding

8.4

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
United Airlines
7.4
Good
8,790 reviews
Japan Airlines
8.3
Very good
1,489 reviews

Entertainment

7.8

Boarding

8.4

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
American Airlines
7.2
Good
10,000 reviews
Japan Airlines
8.3
Very good
1,489 reviews

Entertainment

7.8

Boarding

8.4

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.
WestJet
7.2
Good
2,868 reviews
Japan Airlines
8.3
Very good
1,489 reviews

Entertainment

7.8

Boarding

8.4

Comfort

8.2

Food

7.7

Overall

8.3

Crew

8.7

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

DFW - NRT

This flight was operated by American Airlines. The food was barely tolerable. Mid flight sandwich was ice cold, could not be bothered to warm it up. Staff did not seem to like their jobs very much. Too many seats packed in to maximize profit. A true “cattle car” experience. Subsequent flight from Tokyo to HCMC was on Japan Airlines which was excellent. No comparison between JAL and AA. Unfortunately that’s just the way service is in America nowadays.

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 ($80), United Airlines ($83), and Delta ($93).

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

    While some choose either Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl or Chicago O'Hare Intl - Toronto Island, Chicago O'Hare Intl - Toronto Pearson Intl is the most popular route 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 Royal Jordanian (97%), SkyWest Airlines (94%) or Korean Air (93%) 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 $83. On average you can expect to pay $1,304. The most popular route, (Chicago O'Hare Intl - Toronto Pearson Intl), can usually be booked for $157.

  • 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 $353). 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.

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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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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$109Average$287FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$117Average$327FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$136Average$486FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$162Average$371FlexibilityNo cancel feeOn-time71%

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