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$104+ 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 4/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
mar. 31 — abr. 71
lun. 3/31
lun. 4/7
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 marzo 26, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$187
(Mytrip)

One-way from

$104
(Air Canada)

Popular in

March

Cheapest in

April

Average price

$400

Good round-trip deal

$252 or less

Good one-way deal

$162 or less
Provider with most accurate pricing for Chicago (CHI)-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Toronto (YTO) flights.
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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. 5% potential increase in price ($19 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in March 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 marzo 26, 2025.

This Mytrip deal was found by Cheapflights users on 3/26. 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.
mié. 5/148:40 amORD - YTZ
2 stops8h 57mAir Canada
vie. 5/2310:20 amYTZ - ORD
2 stops10h 52mAir Canada
Deal found 3/26$204
This Mytrip deal was found by Cheapflights users on 3/25. 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.
mié. 5/79:08 pmORD - YYZ
1 stop14h 22mMultiple Airlines
sáb. 5/107:55 amYYZ - ORD
1 stop13h 12mMultiple Airlines
Deal found 3/25$216
This Mytrip deal was found by Cheapflights users on 3/25. 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. 5/39:35 amORD - YYZ
Nonstop1h 40mAir Canada
sáb. 5/103:00 pmYYZ - ORD
1 stop6h 12mAir Canada
Deal found 3/25$224
This Flightnetwork deal was found by Cheapflights users on 3/25. 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.
vie. 4/183:35 pmORD - YUL
Nonstop2h 16mAir Canada
dom. 4/207:30 amYUL - ORD
1 stop6h 45mAir Canada
Deal found 3/25$249
This Delta deal was found by Cheapflights users on 3/25. 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.
mié. 5/76:00 amORD - YYZ
1 stop6h 40mDelta
mié. 5/146:05 pmYYZ - ORD
1 stop3h 16mDelta
Deal found 3/25$255
This United Airlines deal was found by Cheapflights users on 3/24. 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.
mar. 4/2911:15 amORD - YYZ
1 stop4h 54mUnited Airlines
mar. 4/299:00 pmYYZ - ORD
Nonstop2h 06mUnited Airlines
Deal found 3/24$257
This American Airlines deal was found by Cheapflights users on 3/24. 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.
mié. 4/238:30 pmORD - YUL
1 stop12h 20mAmerican Airlines
jue. 4/2412:30 pmYUL - ORD
Nonstop2h 35mAmerican Airlines
Deal found 3/24$270
This Mytrip deal was found by Cheapflights users on 3/25. 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. 5/125:20 pmORD - YTZ
2 stops20h 30mMultiple Airlines
dom. 5/2512:25 pmYTZ - ORD
1 stop6h 56mMultiple Airlines
Deal found 3/25$270
This United Airlines deal was found by Cheapflights users on 3/24. 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. 4/309:50 pmORD - YUL
1 stop16h 04mUnited Airlines
jue. 5/16:40 pmYUL - ORD
Nonstop2h 32mUnited Airlines
Deal found 3/24$282
This United deal was found by Cheapflights users on 3/24. 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.
mié. 4/309:45 pmORD - YUL
1 stop10h 38mMultiple Airlines
jue. 5/11:00 pmYUL - ORD
1 stop6h 54mMultiple Airlines
Deal found 3/24$286
This American Airlines deal was found by Cheapflights users on 3/25. 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.
jue. 4/245:10 amORD - YYZ
1 stop8h 45mAmerican Airlines
jue. 4/245:55 pmYYZ - ORD
1 stop5h 52mAmerican Airlines
Deal found 3/25$305
This Delta deal was found by Cheapflights users on 3/25. 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.
vie. 4/181:25 pmORD - YUL
1 stop9h 03mDelta
lun. 4/216:00 pmYUL - ORD
1 stop6h 59mDelta
Deal found 3/25$310

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 marzo 26, 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

mié. 5/14

8:40 am-6:37 pm

2 stops8h 57m

Toronto Island

vie. 5/23

10:20 am-8:12 pm

2 stops10h 52m

$204

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

mié. 5/7

9:08 pm-12:30 pm

1 stop14h 22m

Toronto Pearson Intl

sáb. 5/10

7:55 am-8:07 pm

1 stop13h 12m

$216

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

sáb. 5/3

9:35 am-12:15 pm

Nonstop1h 40m

Toronto Pearson Intl

sáb. 5/10

3:00 pm-8:12 pm

1 stop6h 12m

$224

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

vie. 4/18

3:35 pm-6:51 pm

Nonstop2h 16m

Montreal Pierre Elliott Trudeau Intl

dom. 4/20

7:30 am-1:15 pm

1 stop6h 45m

$249

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

mié. 5/7

6:00 am-1:40 pm

1 stop6h 40m

Toronto Pearson Intl

mié. 5/14

6:05 pm-8:21 pm

1 stop3h 16m

$255

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

mar. 4/29

11:15 am-5:09 pm

1 stop4h 54m

Toronto Pearson Intl

mar. 4/29

9:00 pm-10:06 pm

Nonstop2h 06m

$257

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

mié. 4/23

8:30 pm-9:50 am

1 stop12h 20m

Montreal Pierre Elliott Trudeau Intl

jue. 4/24

12:30 pm-2:05 pm

Nonstop2h 35m

$270

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

lun. 5/12

5:20 pm-2:50 pm

2 stops20h 30m

Toronto Island

dom. 5/25

12:25 pm-6:21 pm

1 stop6h 56m

$270

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

mié. 4/30

9:50 pm-2:54 pm

1 stop16h 04m

Montreal Pierre Elliott Trudeau Intl

jue. 5/1

6:40 pm-8:12 pm

Nonstop2h 32m

$282

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

mié. 4/30

9:45 pm-9:23 am

1 stop10h 38m

Montreal Pierre Elliott Trudeau Intl

jue. 5/1

1:00 pm-6:54 pm

1 stop6h 54m

$286

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 56 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 $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 marzo 26, 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 marzo 26, 2025.

The most flights from ORD to CAON are scheduled on a Monday (55 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (10 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 marzo 26, 2025.
Read through reviews of airlines operating flights from Chicago to Ontario, such as Delta, Porter Airlines and Aeromexico. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

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.
Delta
8.0
Very good
7,891 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

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.
Porter Airlines
7.9
Good
276 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

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.
Aeromexico
7.5
Good
1,701 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

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.
United Airlines
7.4
Good
8,608 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

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.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,891 reviews

Entertainment

7.9

Boarding

8.2

Comfort

8.0

Crew

8.5

Food

7.3

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 ($104), American Airlines ($113), and United Airlines ($117).

  • 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 Sun Country Air (100%), Korean Air (83%) or Air New Zealand (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 $111. On average you can expect to pay $1,514. The most popular route, (Chicago O'Hare Intl - Toronto Pearson Intl), can usually be booked for $224.

  • 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.

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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 Thunder Bay flights
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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 marzo 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$122Average$264FlexibilityNo cancel feeOn-time52%
American AirlinesCheapest$122Average$354FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$122Average$540FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$157Average$532FlexibilityNo cancel feeOn-time69%
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