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Cheap flights from Chicago to Ontario from C$ 158

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YYZ
9 Nov — 16 Nov1
1 adult

Find flight deals from Chicago to Ontario

Cheapest flights from Chicago to Ontario
Explore the most affordable flight options available from Chicago to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 November 2024.

Sat 7/1212:55 p.m.MDW - YTZ
Nonstop1h 42mPorter Airlines
Sat 14/1211:10 a.m.YTZ - MDW
Nonstop1h 50mPorter Airlines
Deal found 2/11C$ 329
Tue 3/125:00 a.m.ORD - YUL
1 stop11h 35mMultiple Airlines
Wed 4/129:20 a.m.YUL - ORD
2 stops14h 47mMultiple Airlines
Deal found 3/11C$ 329
Tue 3/127:39 p.m.ORD - YYZ
1 stop27h 16mMultiple Airlines
Sun 8/127:15 a.m.YYZ - ORD
1 stop16h 56mMultiple Airlines
Deal found 3/11C$ 332
Mon 2/1212:05 p.m.MDW - YUL
1 stop4h 55mPorter Airlines
Wed 4/126:50 a.m.YUL - MDW
1 stop5h 20mPorter Airlines
Deal found 2/11C$ 347
Wed 4/126:37 p.m.ORD - YTZ
1 stop12h 53mMultiple Airlines
Wed 11/1211:55 a.m.YTZ - ORD
1 stop12h 12mMultiple Airlines
Deal found 4/11C$ 364
Wed 18/126:50 a.m.MDW - YYZ
1 stop16h 00mMultiple Airlines
Mon 23/127:55 p.m.YYZ - MDW
1 stop27h 38mMultiple Airlines
Deal found 3/11C$ 374
Thu 19/1211:25 a.m.MDW - YTZ
Nonstop1h 42mMultiple Airlines
Thu 26/129:40 a.m.YTZ - MDW
Nonstop1h 50mMultiple Airlines
Deal found 4/11C$ 377
Thu 12/127:19 a.m.ORD - YYZ
Nonstop1h 39mUnited Airlines
Thu 12/1212:20 p.m.YYZ - ORD
1 stop7h 16mUnited Airlines
Deal found 4/11C$ 382
Tue 3/122:55 p.m.ORD - YUL
1 stop18h 15mAmerican Airlines
Wed 4/1212:30 p.m.YUL - ORD
Nonstop2h 55mAmerican Airlines
Deal found 3/11C$ 395
Tue 3/126:38 p.m.ORD - YYZ
Nonstop1h 47mAir Canada
Sun 8/128:00 a.m.YYZ - ORD
Nonstop1h 57mAir Canada
Deal found 3/11C$ 396
Thu 5/127:19 a.m.ORD - YYZ
Nonstop1h 39mLufthansa
Sun 8/129:00 a.m.YYZ - ORD
Nonstop2h 06mLufthansa
Deal found 3/11C$ 403
Wed 25/122:01 p.m.ORD - YTZ
1 stop4h 49mAir Canada
Tue 7/13:25 p.m.YTZ - ORD
1 stop5h 30mAir Canada
Deal found 4/11C$ 407

Find flights from Chicago to Ontario within your budget

Customize your flight search to find flights from Chicago 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 503,521 searches. Data last updated 4 November 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Tue 3/12

11:15 a.m.-6:00 p.m.

1 stop5h 45m

C$ 158

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Wed 11/12

5:00 a.m.-2:55 p.m.

1 stop8h 55m

C$ 162

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 24/12

2:01 p.m.-7:50 p.m.

1 stop4h 49m

C$ 169

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Wed 4/12

10:51 a.m.-1:42 p.m.

Nonstop1h 51m

C$ 170

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Tue 3/12

8:35 a.m.-11:50 a.m.

Nonstop2h 15m

C$ 184

ChicagoToronto

MDW - YYZ

MDWYYZ

Chicago Midway

Mon 2/12

2:17 p.m.-11:34 p.m.

1 stop8h 17m

C$ 184

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Sat 16/11

12:55 p.m.-3:37 p.m.

Nonstop1h 42m

C$ 234

ChicagoToronto

MDW - YYZ

MDWYYZ

Chicago Midway

Wed 4/12

9:30 a.m.-11:41 p.m.

1 stop13h 11m

C$ 236

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Sun 24/11

11:15 a.m.-1:57 p.m.

Nonstop1h 42m

C$ 162

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 3/12

5:00 a.m.-10:15 p.m.

2 stops16h 15m

C$ 162

Flights are sorted by cheapest first

Deals found on 3/11

Showing 1-10 of 60 results
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Best time to book a flight from Chicago to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Chicago 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.

Travel insights for flights from Chicago to Ontario

Get recent, data-driven insights about flights from Chicago to Ontario including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from Chicago to Region of Ontario?

Currently, October is the cheapest month in which you can book a flight from Chicago to Region of Ontario (average of C$ 178). Flying from Chicago 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 CHI to ON?

Find hourly flight availability from Chicago 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 4 November 2024.

When flying from Chicago 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 to Region of Ontario

Explore weekly flight availability from Chicago 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 4 November 2024.

The most flights from CHI to CAON are scheduled on a Monday (50 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (32 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 4 November 2024.
Read through reviews of airlines operating flights from Chicago to Ontario, such as United Airlines, Lufthansa and Delta. 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.
Delta
8.0
Very good
8,829 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta
8.0
Very good
8,829 reviews
Delta
8.0
Very good
8,829 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Air Transat
7.8
Good
387 reviews
Delta
8.0
Very good
8,829 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Porter Airlines
7.7
Good
293 reviews
Delta
8.0
Very good
8,829 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines
7.4
Good
9,226 reviews
Delta
8.0
Very good
8,829 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 10

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

WestJet
7.3
Good
2,803 reviews
Delta
8.0
Very good
8,829 reviews
Check prices

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Crew

8.5

Reviews

1 / 10

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 Chicago 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 to Region of Ontario one-way?

    To fly one-way, consider booking your trip with Porter Airlines, which is currently one of the cheapest options available, starting at C$ 158. United Airlines flights start at C$ 170 while deals on Air Canada start at C$ 179 one-way.

  • What are the most popular routes from Chicago to Region of Ontario?

    While some choose either Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl or Chicago Midway - Toronto Island, Chicago O'Hare Intl - Toronto Pearson Intl is the most popular route from Chicago to Region of Ontario.

  • What are the most reliable airlines from Chicago to Region of Ontario?

    Before booking your flight to Region of Ontario from Chicago, check out the most reliable airlines to get you to your destination on time: Jazz (100%), British Airways (100%), Republic Airways( 99%).

  • What are the cheapest flights from Chicago to Region of Ontario?

    The cheapest flight price from Chicago to Region of Ontario is C$ 155. On average you can expect to pay C$ 373. The most popular route, (Chicago O'Hare Intl - Toronto Pearson Intl), can usually be booked for C$ 370.

  • Can I find deals for flights from Chicago to Ontario that include hotel bookings?

    Yes. In addition to deals on Chicago to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to Ontario.

  • Can I find deals for business class flights from Chicago to Ontario?

    Yes. Cheapflights offers flight deals from Chicago 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 to Region of Ontario?

    Currently, October is the cheapest month in which you can book a flight from Chicago to Region of Ontario (average of C$ 178). Flying from Chicago 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 Chicago 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 Chicago to Ontario

Discover the top 3 airlines that operate flights from Chicago 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 503,521 searches. Data last updated 4 November 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 183AverageC$ 465FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 200AverageC$ 474FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 304AverageC$ 465FlexibilityNo cancel feeOn-time52%
Search Porter 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 Chicago to Ontario?

Deals for Chicago 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 Chicago to Ontario?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Chicago to Ontario.

Can Cheapflights find flights from Chicago to Ontario with no change fees?

Yes, we can. To see specific flights from Chicago to Ontario with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Can Cheapflights notify me if prices for flights from Chicago to Ontario become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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