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$75+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
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 septiembre 11, 2025.

Round-trip from

$189
(Flightnetwork)

One-way from

$75
(Mytrip)

Popular in

January

Cheapest in

July

Average price

$276

Good round-trip deal

$270 or less

Good one-way deal

$212 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. 8% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 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 septiembre 11, 2025.

This Flightnetwork deal was found by Cheapflights users on 9/9. 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.
mar. 9/309:55 amORD - YYZ
Nonstop1h 42mAir Canada
jue. 10/28:15 amYYZ - ORD
Nonstop1h 54mAir Canada
Deal found 9/9$189
This Mytrip deal was found by Cheapflights users on 9/9. 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.
sáb. 10/410:40 amORD - YYZ
1 stop5h 44mAir Canada
dom. 10/56:15 amYYZ - ORD
1 stop4h 36mAir Canada
Deal found 9/9$194
This Mytrip deal was found by Cheapflights users on 9/9. 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.
lun. 10/207:43 pmORD - YYZ
1 stop17h 22mMultiple Airlines
jue. 10/236:30 amYYZ - ORD
1 stop10h 34mMultiple Airlines
Deal found 9/9$196
This Mytrip deal was found by Cheapflights users on 9/9. 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.
vie. 9/266:44 pmORD - YYZ
1 stop18h 21mMultiple Airlines
mar. 9/306:30 amYYZ - ORD
1 stop12h 09mMultiple Airlines
Deal found 9/9$199
This Mytrip deal was found by Cheapflights users on 9/9. 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.
mar. 10/217:43 pmORD - YYZ
1 stop17h 22mMultiple Airlines
jue. 10/236:30 amYYZ - ORD
1 stop10h 34mMultiple Airlines
Deal found 9/9$200
This Trip.com deal was found by Cheapflights users on 9/9. 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.
jue. 10/212:52 pmORD - YYZ
Nonstop1h 54mUnited Airlines
dom. 10/57:00 amYYZ - ORD
Nonstop1h 58mUnited Airlines
Deal found 9/9$201
This United Airlines deal was found by Cheapflights users on 9/9. 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.
mié. 10/19:20 pmORD - YYZ
1 stop11h 44mUnited Airlines
jue. 10/21:00 pmYYZ - ORD
Nonstop2h 01mUnited Airlines
Deal found 9/9$205
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
jue. 10/235:05 amORD - YYZ
1 stop8h 00mMultiple Airlines
lun. 10/274:00 pmYYZ - ORD
1 stop8h 44mMultiple Airlines
Deal found 9/9$207
This Mytrip deal was found by Cheapflights users on 9/9. 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.
dom. 9/285:05 amORD - YYZ
1 stop8h 00mMultiple Airlines
mar. 9/306:30 amYYZ - ORD
1 stop12h 09mMultiple Airlines
Deal found 9/9$210
This Kiwi.com deal was found by Cheapflights users on 9/9. 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.
jue. 10/210:11 amORD - YYZ
1 stop9h 56mMultiple Airlines
dom. 10/54:00 pmYYZ - ORD
1 stop26h 16mMultiple Airlines
Deal found 9/9$211
This Air Canada deal was found by Cheapflights users on 9/9. 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.
mié. 10/228:40 amORD - YTZ
1 stop5h 05mAir Canada
sáb. 11/13:30 pmYTZ - ORD
1 stop5h 30mAir Canada
Deal found 9/9$223
This Bravofly deal was found by Cheapflights users on 9/9. 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 Bravofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/3010:40 amORD - YTZ
1 stop5h 05mAir Canada
jue. 10/212:25 pmYTZ - ORD
1 stop8h 52mAir Canada
Deal found 9/9$237

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 septiembre 11, 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

mié. 10/8

7:10 am-9:58 am

Nonstop1h 48m

Toronto Pearson Intl

dom. 10/12

9:00 am-9:55 am

Nonstop1h 55m

$219

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

mar. 10/7

12:52 pm-3:46 pm

Nonstop1h 54m

Toronto Pearson Intl

mié. 10/8

9:00 am-9:55 am

Nonstop1h 55m

$219

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

vie. 11/7

1:19 pm-4:02 pm

Nonstop1h 43m

Toronto Pearson Intl

lun. 11/10

9:00 am-10:05 am

Nonstop2h 05m

$219

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

jue. 11/6

4:50 pm-7:45 pm

Nonstop1h 55m

Toronto Pearson Intl

sáb. 11/8

9:00 am-10:05 am

Nonstop2h 05m

$219

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

mar. 10/21

12:52 pm-3:46 pm

Nonstop1h 54m

Toronto Pearson Intl

jue. 10/23

7:00 am-7:58 am

Nonstop1h 58m

$219

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

mar. 10/7

10:40 am-4:45 pm

1 stop5h 05m

Toronto Island

sáb. 10/11

3:25 pm-8:17 pm

1 stop5h 52m

$223

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

mar. 10/14

9:20 pm-10:04 am

1 stop11h 44m

Toronto Pearson Intl

jue. 10/16

9:00 am-9:55 am

Nonstop1h 55m

$229

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

mar. 10/7

8:50 am-2:19 pm

1 stop4h 29m

Toronto Pearson Intl

mar. 10/14

9:00 pm-10:07 pm

Nonstop2h 07m

$229

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

dom. 11/9

8:50 am-11:46 pm

1 stop13h 56m

Toronto Pearson Intl

lun. 11/10

9:00 pm-10:05 pm

Nonstop2h 05m

$229

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

dom. 10/5

10:45 am-5:14 pm

1 stop5h 29m

Toronto Pearson Intl

mar. 10/7

9:00 am-9:55 am

Nonstop1h 55m

$229

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 $243). Flying from Chicago O'Hare Intl Airport to Region of Ontario in August is currently the most expensive (average of $348). 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 septiembre 11, 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 septiembre 11, 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 septiembre 11, 2025.
Get a feel of what it's like to fly with Porter Airlines, United Airlines, and American Airlines from Chicago O'Hare Intl Airport to Ontario by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
7.9
Good
363 reviews

Comfort

7.9

Entertainment

7.0

Overall

7.9

Food

7.6

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
7.9
Good
363 reviews
Porter Airlines
7.9
Good
363 reviews

Comfort

7.9

Entertainment

7.0

Overall

7.9

Food

7.6

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,937 reviews
Porter Airlines
7.9
Good
363 reviews

Comfort

7.9

Entertainment

7.0

Overall

7.9

Food

7.6

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
American Airlines
7.2
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews

Comfort

7.9

Entertainment

7.0

Overall

7.9

Food

7.6

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,000 reviews
Porter Airlines
7.9
Good
363 reviews

Comfort

7.9

Entertainment

7.0

Overall

7.9

Food

7.6

Crew

8.6

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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?

    For as low as $219, United Airlines can have you in Region of Ontario from Chicago O'Hare Intl Airport in 1h 48m. Chicago O'Hare Intl Airport and Region of Ontario are separated by a distance of 436 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 ($78), United Airlines ($85), and American Airlines ($115).

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

    While some choose either Chicago O'Hare Intl - Toronto Pearson Intl or Chicago O'Hare Intl - Toronto Island, Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau 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 Qatar Airways (85%), Envoy Air (80%) or SkyWest Airlines (80%) 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 $74. On average you can expect to pay $1,016. The most popular route, (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl), can usually be booked for $274.

  • 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 August is currently the most expensive (average of $348). 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 3 airlines flying from O'Hare Intl to Ontario

Discover the top 3 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 septiembre 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$118Average$318FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$146Average$433FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$221Average$390FlexibilityNo cancel feeOn-time71%

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