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Cheap flights from Chicago O'Hare Intl Airport to Ontario from C$ 124

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 28/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
19 May — 26 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 14 May 2025.

Round-trip from

C$ 250

One-way from

C$ 124

Popular in

November

Cheapest in

April

Average price

C$ 380

Good round-trip deal

C$ 263 or less

Good one-way deal

C$ 163 or less
Air Canada
  • Air Canada
  • 23/6-30/6
  • 2 total stops
  • 9h 02m total
  • Chicago to Ontario
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Air Canada
  • Air Canada
  • 28/6
  • 1 total stop
  • 7h 15m total
  • Chicago to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 39 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 10 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 14 May 2025.

Mon 23/63:35 p.m.ORD - YTZ
1 stop4h 56mAir Canada
Mon 30/68:50 a.m.YTZ - ORD
1 stop4h 06mAir Canada
Deal found 13/5C$ 250
Fri 27/68:25 p.m.ORD - YYZ
Nonstop1h 45mAir Canada
Fri 4/79:00 p.m.YYZ - ORD
Nonstop2h 05mAir Canada
Deal found 13/5C$ 254
Mon 7/73:50 p.m.ORD - YYZ
Nonstop1h 45mUnited Airlines
Tue 7/109:00 a.m.YYZ - ORD
Nonstop1h 55mUnited Airlines
Deal found 13/5C$ 256
Fri 29/89:31 p.m.ORD - YYZ
1 stop11h 33mMultiple Airlines
Mon 1/98:15 a.m.YYZ - ORD
Nonstop1h 54mMultiple Airlines
Deal found 14/5C$ 277
Fri 20/67:05 a.m.ORD - YYZ
1 stop6h 50mAmerican Airlines
Fri 20/66:29 p.m.YYZ - ORD
Nonstop2h 00mAmerican Airlines
Deal found 14/5C$ 288
Mon 7/77:10 a.m.ORD - YYZ
1 stop6h 35mDelta
Tue 7/1012:15 p.m.YYZ - ORD
1 stop7h 23mDelta
Deal found 13/5C$ 334
Sat 14/69:28 p.m.ORD - YTZ
1 stop13h 12mMultiple Airlines
Tue 17/612:00 p.m.YTZ - ORD
2 stops19h 37mMultiple Airlines
Deal found 14/5C$ 346
Thu 25/97:35 p.m.ORD - YUL
1 stop11h 14mMultiple Airlines
Sun 28/98:20 a.m.YUL - ORD
Nonstop2h 31mMultiple Airlines
Deal found 13/5C$ 363
Thu 5/62:07 p.m.ORD - YUL
Nonstop2h 19mAir Canada
Sun 8/66:15 a.m.YUL - ORD
Nonstop2h 44mAir Canada
Deal found 14/5C$ 365
Mon 1/96:00 a.m.ORD - YUL
1 stop10h 10mDelta
Wed 10/96:20 a.m.YUL - ORD
1 stop9h 36mDelta
Deal found 14/5C$ 369
Sun 15/68:50 p.m.ORD - YUL
1 stop15h 44mAmerican Airlines
Thu 19/612:30 p.m.YUL - ORD
Nonstop2h 35mAmerican Airlines
Deal found 14/5C$ 374
Wed 11/65:51 a.m.ORD - YOW
1 stop8h 05mMultiple Airlines
Thu 12/64:10 p.m.YOW - ORD
1 stop15h 27mMultiple Airlines
Deal found 14/5C$ 380

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 14 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

Mon 23/6

3:35 p.m.-9:31 p.m.

1 stop4h 56m

Toronto Island

Mon 30/6

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

1 stop4h 06m

C$ 250

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 27/6

8:25 p.m.-11:10 p.m.

Nonstop1h 45m

Toronto Pearson Intl

Fri 4/7

9:00 p.m.-10:05 p.m.

Nonstop2h 05m

C$ 254

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Mon 7/7

9:14 p.m.-11:58 p.m.

Nonstop1h 44m

Toronto Pearson Intl

Fri 3/10

12:00 p.m.-12:54 p.m.

Nonstop1h 54m

C$ 256

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 29/8

9:31 p.m.-10:04 a.m.

1 stop11h 33m

Toronto Pearson Intl

Mon 1/9

8:15 a.m.-9:09 a.m.

Nonstop1h 54m

C$ 277

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 20/6

7:05 a.m.-2:55 p.m.

1 stop6h 50m

Toronto Pearson Intl

Fri 20/6

6:29 p.m.-7:29 p.m.

Nonstop2h 00m

C$ 288

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Mon 7/7

7:10 a.m.-2:45 p.m.

1 stop6h 35m

Toronto Pearson Intl

Sat 4/10

12:15 p.m.-6:38 p.m.

1 stop7h 23m

C$ 334

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Sat 14/6

9:28 p.m.-11:40 a.m.

1 stop13h 12m

Toronto Island

Tue 17/6

12:00 p.m.-6:37 a.m.

2 stops19h 37m

C$ 346

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 25/9

7:35 p.m.-7:49 a.m.

1 stop11h 14m

Montreal Pierre Elliott Trudeau Intl

Sun 28/9

8:20 a.m.-9:51 a.m.

Nonstop2h 31m

C$ 363

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Thu 5/6

2:07 p.m.-5:26 p.m.

Nonstop2h 19m

Montreal Pierre Elliott Trudeau Intl

Sun 8/6

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

Nonstop2h 44m

C$ 365

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Fri 24/10

6:00 a.m.-5:04 p.m.

1 stop10h 04m

Montreal Pierre Elliott Trudeau Intl

Mon 27/10

12:45 p.m.-9:12 p.m.

1 stop9h 27m

C$ 369

Flights are sorted by cheapest round-trip flights first.

Deals found on 14/5

Showing 1-10 of 49 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$ 167). 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 14 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 14 May 2025.

The most flights from ORD to CAON are scheduled on a Friday (63 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (57 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 14 May 2025.
See what other customers who have flown with Japan Airlines, Porter Airlines and Delta 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
1,471 reviews
Check prices

Overall

8.3

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Crew

8.7

Food

7.7

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
1,471 reviews
Japan Airlines
8.3
Very good
1,471 reviews
Check prices

Overall

8.3

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Crew

8.7

Food

7.7

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.
Porter Airlines
8.0
Very good
286 reviews
Japan Airlines
8.3
Very good
1,471 reviews
Check prices

Overall

8.3

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Crew

8.7

Food

7.7

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
7,946 reviews
Japan Airlines
8.3
Very good
1,471 reviews
Check prices

Overall

8.3

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Crew

8.7

Food

7.7

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
8,730 reviews
Japan Airlines
8.3
Very good
1,471 reviews
Check prices

Overall

8.3

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Crew

8.7

Food

7.7

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
1,471 reviews
Check prices

Overall

8.3

Comfort

8.2

Entertainment

7.8

Boarding

8.4

Crew

8.7

Food

7.7

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?

    C$ 124 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 United Airlines and Delta, with prices starting from C$ 127 and C$ 131, 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 - Toronto Pearson Intl, Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl or Chicago O'Hare Intl - Toronto Island 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%), Japan Airlines (85%).

  • 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$ 276, our data shows the cheapest flight currently is C$ 124. When looking at the most popular route, (Chicago O'Hare Intl - Toronto Pearson Intl), you can expect to pay C$ 193 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$ 167). 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
O'Hare Intl to Pearson Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
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Midway 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 14 May 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 195AverageC$ 479FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 204AverageC$ 434FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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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?

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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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