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Cheap flights from Chicago O'Hare Intl Airport to Ontario from C$ 129

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 8/9. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
6 May — 13 May1
1 adult

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 1 May 2025.

Round-trip from

C$ 272

One-way from

C$ 129

Popular in

November

Cheapest in

July

Average price

C$ 395

Good round-trip deal

C$ 233 or less

Good one-way deal

C$ 161 or less
Air Canada
  • Air Canada
  • 12/6-19/6
  • 2 total stops
  • 9h 27m total
  • Chicago to Ontario
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Air Canada
  • Air Canada
  • 8/9
  • 1 total stop
  • 5h 05m total
  • Chicago to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 26 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 9 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Price to beat on a round-trip flight from Chicago O'Hare Intl to Ontario.
Search Deals
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 1 May 2025.

Thu 12/62:16 p.m.ORD - YTZ
1 stop5h 21mAir Canada
Thu 19/68:50 a.m.YTZ - ORD
1 stop4h 06mAir Canada
Deal found 30/4C$ 272
Thu 29/58:50 a.m.ORD - YYZ
Nonstop1h 59mAir Canada
Fri 30/51:00 p.m.YYZ - ORD
Nonstop2h 01mAir Canada
Deal found 30/4C$ 275
Fri 30/59:08 p.m.ORD - YYZ
1 stop14h 22mMultiple Airlines
Wed 4/67:15 a.m.YYZ - ORD
1 stop13h 52mMultiple Airlines
Deal found 30/4C$ 329
Thu 29/52:16 p.m.ORD - YUL
1 stop6h 25mAir Canada
Mon 2/66:15 a.m.YUL - ORD
Nonstop2h 44mAir Canada
Deal found 30/4C$ 372
Sun 1/69:50 a.m.ORD - YYZ
Nonstop1h 40mAmerican Airlines
Wed 4/66:20 p.m.YYZ - ORD
Nonstop1h 55mAmerican Airlines
Deal found 30/4C$ 372
Tue 10/66:07 p.m.ORD - YUL
1 stop14h 38mAmerican Airlines
Wed 11/612:30 p.m.YUL - ORD
Nonstop2h 35mAmerican Airlines
Deal found 30/4C$ 373
Sun 1/65:51 a.m.ORD - YTZ
1 stop25h 39mMultiple Airlines
Wed 4/69:45 a.m.YTZ - ORD
1 stop11h 22mMultiple Airlines
Deal found 30/4C$ 386
Tue 10/69:45 p.m.ORD - YUL
1 stop10h 38mMultiple Airlines
Wed 11/61:00 p.m.YUL - ORD
1 stop6h 53mMultiple Airlines
Deal found 30/4C$ 397
Wed 4/66:24 a.m.ORD - YYZ
1 stop4h 16mDelta
Wed 11/61:04 p.m.YYZ - ORD
1 stop4h 42mDelta
Deal found 1/5C$ 417
Sun 15/67:19 a.m.ORD - YUL
Nonstop2h 21mUnited Airlines
Mon 23/66:15 a.m.YUL - ORD
Nonstop2h 44mUnited Airlines
Deal found 30/4C$ 423
Thu 29/57:05 a.m.ORD - YUL
1 stop9h 35mDelta
Tue 3/65:00 p.m.YUL - ORD
1 stop6h 41mDelta
Deal found 30/4C$ 442
Fri 13/64:43 p.m.ORD - YOW
1 stop6h 39mMultiple Airlines
Fri 20/65:55 a.m.YOW - ORD
1 stop10h 55mMultiple Airlines
Deal found 29/4C$ 478

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 1 May 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

Thu 12/6

2:16 p.m.-8:37 p.m.

1 stop5h 21m

Toronto Island

Thu 19/6

8:50 a.m.-11:56 a.m.

1 stop4h 06m

C$ 272

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 29/5

8:50 a.m.-11:49 a.m.

Nonstop1h 59m

Toronto Pearson Intl

Fri 30/5

1:00 p.m.-2:01 p.m.

Nonstop2h 01m

C$ 275

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 30/5

9:08 p.m.-12:30 p.m.

1 stop14h 22m

Toronto Pearson Intl

Wed 4/6

7:15 a.m.-8:07 p.m.

1 stop13h 52m

C$ 329

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sun 1/6

9:50 a.m.-12:30 p.m.

Nonstop1h 40m

Toronto Pearson Intl

Wed 4/6

6:20 p.m.-7:15 p.m.

Nonstop1h 55m

C$ 372

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Tue 10/6

6:07 p.m.-9:45 a.m.

1 stop14h 38m

Montreal Pierre Elliott Trudeau Intl

Wed 11/6

12:30 p.m.-2:05 p.m.

Nonstop2h 35m

C$ 373

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Sun 1/6

5:51 a.m.-8:30 a.m.

1 stop25h 39m

Toronto Island

Wed 4/6

9:45 a.m.-8:07 p.m.

1 stop11h 22m

C$ 386

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Tue 10/6

9:45 p.m.-9:23 a.m.

1 stop10h 38m

Montreal Pierre Elliott Trudeau Intl

Wed 11/6

1:00 p.m.-6:53 p.m.

1 stop6h 53m

C$ 397

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 4/6

7:19 a.m.-10:40 a.m.

Nonstop2h 21m

Montreal Pierre Elliott Trudeau Intl

Tue 24/6

6:15 a.m.-7:59 a.m.

Nonstop2h 44m

C$ 408

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 4/6

6:00 a.m.-5:00 p.m.

1 stop10h 00m

Montreal Pierre Elliott Trudeau Intl

Wed 4/6

8:00 p.m.-9:55 a.m.

1 stop14h 55m

C$ 412

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Wed 4/6

6:24 a.m.-11:40 a.m.

1 stop4h 16m

Toronto Pearson Intl

Wed 11/6

1:04 p.m.-4:46 p.m.

1 stop4h 42m

C$ 417

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/4

Showing 1-10 of 48 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 1 May 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 1 May 2025.

The most flights from ORD to CAON are scheduled on a Thursday (61 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (37 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 51.0 - 83.0 mm per month. June is typically the wettest month, when rainfall can reach 83.0 mm. February is typically the driest time to visit Region of Ontario when rainfall is around 51.0 mm.

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 21.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -6.0 C).

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 1 May 2025.
See what other customers who have flown with Japan Airlines, Delta and United Airlines from Chicago to Ontario have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Japan Airlines
8.3
Very good
1,464 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.4

Overall

8.3

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

mark,Nov 2024

YVR - NRT

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority
Japan Airlines
8.3
Very good
1,464 reviews
Japan Airlines
8.3
Very good
1,464 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.4

Overall

8.3

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

mark,Nov 2024

YVR - NRT

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority
Delta
8.0
Very good
7,934 reviews
Japan Airlines
8.3
Very good
1,464 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.4

Overall

8.3

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

mark,Nov 2024

YVR - NRT

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority
United Airlines
7.4
Good
8,696 reviews
Japan Airlines
8.3
Very good
1,464 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.4

Overall

8.3

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

mark,Nov 2024

YVR - NRT

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority
American Airlines
7.2
Good
10,000 reviews
Japan Airlines
8.3
Very good
1,464 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.4

Overall

8.3

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

mark,Nov 2024

YVR - NRT

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority
WestJet
7.2
Good
2,826 reviews
Japan Airlines
8.3
Very good
1,464 reviews
Check prices

Entertainment

7.8

Crew

8.7

Boarding

8.4

Overall

8.3

Comfort

8.2

Food

7.7

Reviews

1 / 20
10.0
Excellent

mark,Nov 2024

YVR - NRT

I like that flight because super nice and friendly. I’m a senior and quick not comfortable to ask what I need help. But would be nicer if they check us if we need any more help because we are not able to leave our seat. However Japan Aniline is my on top priority

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?

    C$ 129 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 Delta and United Airlines, with prices starting from C$ 170 and C$ 176, 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 - Ottawa 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: Sun Country Air (100%), Finnair (100%), Korean Air (86%).

  • 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$ 268, our data shows the cheapest flight currently is C$ 140. When looking at the most popular route, (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl), you can expect to pay C$ 387 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.
O'Hare Intl to Vancouver Intl flights
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O'Hare Intl to Pierre Elliott Trudeau Intl flights
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Midway to Toronto Island flights
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Midway to Pearson Intl flights
O'Hare Intl to Ottawa flights
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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 1 May 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 182AverageC$ 476FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 201AverageC$ 456FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

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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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