Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Chicago O'Hare Intl Airport to Ontario from C$ 90

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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
26 Feb — 5 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from O'Hare Intl to Ontario

Enter your travel dates to find the best prices.

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 27 January 2026.

Thu 18/68:45 a.m.
ORD
-
YTZ
1 stop6h 06m
Air Canada
Sun 21/67:20 p.m.
YTZ
-
ORD
Nonstop1h 56m
Air Canada
Deal found 27/1C$ 257
Thu 19/210:00 a.m.
ORD
-
YYZ
Nonstop1h 40m
Air Canada
Mon 23/22:15 p.m.
YYZ
-
ORD
Nonstop1h 55m
Air Canada
Deal found 26/1C$ 259
Wed 18/28:00 a.m.
ORD
-
YYZ
Nonstop1h 40m
Air Canada
Fri 20/26:40 p.m.
YYZ
-
ORD
Nonstop2h 05m
Air Canada
Deal found 26/1C$ 270
Fri 13/38:00 a.m.
ORD
-
YYZ
Nonstop1h 40m
Air Canada
Mon 16/38:15 a.m.
YYZ
-
ORD
Nonstop1h 58m
Air Canada
Deal found 26/1C$ 271
Mon 1/610:00 a.m.
ORD
-
YYZ
Nonstop1h 40m
Air Canada
Thu 4/66:25 p.m.
YYZ
-
ORD
Nonstop2h 00m
Air Canada
Deal found 26/1C$ 272
Wed 18/210:35 a.m.
ORD
-
YUL
Nonstop2h 25m
United Airlines
Wed 18/24:45 p.m.
YUL
-
ORD
Nonstop3h 00m
United Airlines
Deal found 26/1C$ 278
Mon 23/38:00 a.m.
ORD
-
YYZ
Nonstop1h 40m
Air Canada
Mon 30/38:15 a.m.
YYZ
-
ORD
Nonstop1h 55m
Air Canada
Deal found 25/1C$ 279
Thu 5/36:40 a.m.
ORD
-
YUL
1 stop7h 42m
American Airlines
Mon 9/33:45 p.m.
YUL
-
ORD
Nonstop3h 00m
American Airlines
Deal found 25/1C$ 292
Wed 8/412:50 p.m.
ORD
-
YUL
Nonstop2h 15m
Air Canada
Mon 13/49:15 a.m.
YUL
-
ORD
Nonstop2h 38m
Air Canada
Deal found 26/1C$ 293
Mon 8/62:00 p.m.
ORD
-
YTZ
Nonstop1h 41m
Air Canada
Wed 10/67:20 p.m.
YTZ
-
ORD
Nonstop1h 56m
Air Canada
Deal found 24/1C$ 294
Tue 17/26:00 p.m.
ORD
-
YUL
Nonstop2h 17m
United Airlines
Sat 21/22:13 p.m.
YUL
-
ORD
1 stop10h 30m
United Airlines
Deal found 26/1C$ 300
Sun 15/28:50 a.m.
ORD
-
YUL
1 stop5h 26m
United Airlines
Sat 21/29:15 a.m.
YUL
-
ORD
1 stop10h 26m
United Airlines
Deal found 25/1C$ 312

Find 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 27 January 2026.

Round-trip from

C$ 257

One-way from

C$ 90

Popular in

January

Cheapest in

September

Average price

C$ 423

Good round-trip deal

C$ 180 or less

Good one-way deal

C$ 198 or less
Air Canada
  • Air Canada
  • 18/6-21/6
  • 1 total stop
  • 8h 02m total
  • Chicago to Ontario
Search Deals
Air Canada
  • Air Canada
  • 2/6
  • Nonstop
  • 2h 15m total
  • Chicago to Ontario
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (C$ 63 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
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.
Search Deals

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 27 January 2026.
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

Tue 31/3

6:00 a.m.-11:43 a.m.

1 stop4h 43m

Toronto Pearson Intl

Tue 31/3

2:45 p.m.-3:48 p.m.

Nonstop2h 03m

C$ 283

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Fri 19/6

2:00 p.m.-4:41 p.m.

Nonstop1h 41m

Toronto Island

Sun 21/6

7:20 p.m.-8:16 p.m.

Nonstop1h 56m

C$ 292

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Fri 12/6

2:00 p.m.-4:41 p.m.

Nonstop1h 41m

Toronto Island

Sun 14/6

12:15 p.m.-1:10 p.m.

Nonstop1h 55m

C$ 292

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Mon 1/6

2:00 p.m.-4:41 p.m.

Nonstop1h 41m

Toronto Island

Fri 5/6

7:20 p.m.-8:16 p.m.

Nonstop1h 56m

C$ 294

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Sat 6/6

7:25 a.m.-10:06 a.m.

Nonstop1h 41m

Toronto Island

Fri 12/6

12:15 p.m.-1:10 p.m.

Nonstop1h 55m

C$ 294

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 28/3

9:15 p.m.-11:58 p.m.

Nonstop1h 43m

Toronto Pearson Intl

Thu 2/4

8:50 a.m.-9:50 a.m.

Nonstop2h 00m

C$ 304

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 17/2

4:47 p.m.-7:45 p.m.

Nonstop1h 58m

Toronto Pearson Intl

Thu 19/2

3:30 p.m.-4:39 p.m.

Nonstop2h 09m

C$ 304

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Mon 30/3

9:05 a.m.-11:49 a.m.

Nonstop1h 44m

Toronto Pearson Intl

Wed 1/4

8:50 a.m.-9:50 a.m.

Nonstop2h 00m

C$ 304

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Thu 18/6

8:45 a.m.-3:51 p.m.

1 stop6h 06m

Toronto Island

Sun 21/6

7:20 p.m.-8:16 p.m.

Nonstop1h 56m

C$ 304

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 31/3

7:04 a.m.-9:54 a.m.

Nonstop1h 50m

Toronto Pearson Intl

Sun 5/4

8:50 a.m.-9:50 a.m.

Nonstop2h 00m

C$ 304

Flights are sorted by cheapest round-trip flights first.

Deals found on 25/1

Showing 1-10 of 60 results
1
2
3
...
6

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, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Region of Ontario (average of C$ 116). Flying from Chicago O'Hare Intl Airport to Region of Ontario in December is currently the most expensive (average of C$ 289). 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 27 January 2026.

It’s typically best to fly out from Chicago O'Hare Intl Airport to Region of Ontario in the evening. Doing so could potentially save you 52% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Chicago O'Hare Intl Airport to Region of Ontario?

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to Ontario. Price data was last updated on 24 January 2026.

Travelers seeking maximum savings on their Chicago O'Hare Intl Airport to Region of Ontario flight should consider departing on Thursday at noon when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 27 January 2026.

The most flights from ORD to CAON are scheduled on a Monday (66 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (49 on average).

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to Region of Ontario?

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 27 January 2026.
See what other customers who have flown with United Airlines and Air Canada from Chicago O'Hare Intl Airport to Ontario have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,205 reviews
Check prices

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,205 reviews
United Airlines
7.4
Good
9,205 reviews
Check prices

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Air Canada
7.1
Good
10,660 reviews
United Airlines
7.4
Good
9,205 reviews
Check prices

Overall

7.4

Food

6.6

Crew

8.1

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

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?

    Departing from Chicago O'Hare Intl Airport to Region of Ontario will take you 1h 41m. Airlines will cover a distance of 716 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to Region of Ontario one-way?

    C$ 95 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on American Airlines and Air Canada, with prices starting from C$ 111 and C$ 138, 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 - 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: Korean Air (88%), Alaska Airlines (73%), Japan Airlines (72%).

  • 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$ 441, our data shows the cheapest flight currently is C$ 130. When looking at the most popular route, (Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl), you can expect to pay C$ 251 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, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to Region of Ontario (average of C$ 116). Flying from Chicago O'Hare Intl Airport to Region of Ontario in December is currently the most expensive (average of C$ 289). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 Calgary flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Pearson Intl flights
Midway to Toronto Island flights
Midway to Pearson Intl flights
O'Hare Intl to Toronto Island flights
Midway to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Québec City flights
O'Hare Intl to Halifax flights
O'Hare Intl to Ottawa flights
O'Hare Intl to Abbotsford flights
O'Hare Intl to Winnipeg flights
O'Hare Intl to Edmonton flights
Midway to Québec City flights
Midway to Ottawa flights
O'Hare Intl to Saskatoon flights
O'Hare Intl to Kelowna flights
O'Hare Intl to Hamilton flights
Midway to Kelowna flights
O'Hare Intl to St. John's flights
O'Hare Intl to Victoria flights
O'Hare Intl to Yellowknife flights
O'Hare Intl to Charlottetown flights
O'Hare Intl to Prince George flights
O'Hare Intl to Regina flights
O'Hare Intl to Nanaimo flights

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 27 January 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 166AverageC$ 352FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
United AirlinesCheapestC$ 208AverageC$ 338FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.