Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Chicago to Ontario from C$ 151

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YYZ
26 Jan — 2 Feb1
1 adult

Cheap flight deals from Chicago to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Ontario (CAON). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 January 2025.

Round-trip from

C$ 284

One-way from

C$ 151
Porter Airlines
  • Porter Airlines
  • 13/2-16/2
  • Nonstop
  • 3h 32m total
  • Chicago to Ontario
Search Deals
4/2
  • 4/2
  • 2 total stops
  • 29h 55m total
  • Chicago to Ontario
Search Deals

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 21 January 2025.

Thu 13/21:05 p.m.MDW - YTZ
Nonstop1h 42mPorter Airlines
Sun 16/211:20 a.m.YTZ - MDW
Nonstop1h 50mPorter Airlines
Deal found 20/1C$ 284
Sat 22/312:55 p.m.MDW - YTZ
Nonstop1h 42mAir Transat
Wed 26/39:30 a.m.YTZ - MDW
Nonstop1h 50mAir Transat
Deal found 20/1C$ 346
Fri 28/21:05 p.m.MDW - YUL
1 stop5h 20mPorter Airlines
Sun 2/36:50 a.m.YUL - MDW
1 stop4h 30mPorter Airlines
Deal found 20/1C$ 356
Wed 5/310:25 a.m.ORD - YYZ
1 stop12h 30mMultiple Airlines
Wed 12/312:25 p.m.YYZ - ORD
1 stop12h 42mMultiple Airlines
Deal found 20/1C$ 371
Fri 25/411:15 a.m.MDW - YTZ
Nonstop1h 42mMultiple Airlines
Mon 28/43:50 p.m.YTZ - MDW
Nonstop1h 50mMultiple Airlines
Deal found 20/1C$ 384
Tue 4/35:00 a.m.ORD - YTZ
2 stops16h 23mMultiple Airlines
Tue 11/32:00 p.m.YTZ - ORD
2 stops20h 29mMultiple Airlines
Deal found 20/1C$ 389
Mon 3/33:35 p.m.ORD - YTZ
1 stop5h 15mAir Canada
Mon 10/310:25 a.m.YTZ - ORD
1 stop5h 20mAir Canada
Deal found 19/1C$ 397
Mon 3/37:12 a.m.ORD - YYZ
Nonstop1h 46mAir Canada
Mon 10/39:00 p.m.YYZ - ORD
Nonstop2h 06mAir Canada
Deal found 19/1C$ 407
Mon 10/25:35 a.m.ORD - YUL
1 stop8h 25mMultiple Airlines
Wed 12/23:55 p.m.YUL - ORD
1 stop9h 03mMultiple Airlines
Deal found 19/1C$ 412
Thu 6/311:15 a.m.MDW - YOW
1 stop4h 54mPorter Airlines
Thu 13/37:00 a.m.YOW - MDW
1 stop4h 20mPorter Airlines
Deal found 20/1C$ 423
Wed 12/25:15 a.m.ORD - YOW
1 stop9h 40mMultiple Airlines
Thu 13/29:50 a.m.YOW - ORD
1 stop12h 43mMultiple Airlines
Deal found 20/1C$ 428
Fri 14/21:25 p.m.ORD - YYZ
Nonstop1h 35mAmerican Airlines
Mon 17/24:44 p.m.YYZ - ORD
Nonstop2h 00mAmerican Airlines
Deal found 20/1C$ 428

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 629,999 searches. Data last updated 21 January 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Thu 13/2

1:05 p.m.-3:47 p.m.

Nonstop1h 42m

Toronto Island

Sun 16/2

11:20 a.m.-12:10 p.m.

Nonstop1h 50m

C$ 284

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Sat 22/3

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

Nonstop1h 42m

Toronto Island

Wed 26/3

9:30 a.m.-10:20 a.m.

Nonstop1h 50m

C$ 346

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Fri 28/2

1:05 p.m.-7:25 p.m.

1 stop5h 20m

Montreal Pierre Elliott Trudeau Intl

Sun 2/3

6:50 a.m.-10:20 a.m.

1 stop4h 30m

C$ 356

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Wed 5/3

10:25 a.m.-11:55 p.m.

1 stop12h 30m

Toronto Pearson Intl

Wed 12/3

12:25 p.m.-12:07 a.m.

1 stop12h 42m

C$ 371

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Fri 25/4

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

Nonstop1h 42m

Toronto Island

Mon 28/4

3:50 p.m.-4:40 p.m.

Nonstop1h 50m

C$ 384

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 4/3

5:00 a.m.-10:23 p.m.

2 stops16h 23m

Toronto Island

Tue 11/3

2:00 p.m.-9:29 a.m.

2 stops20h 29m

C$ 389

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Mon 3/3

3:35 p.m.-9:50 p.m.

1 stop5h 15m

Toronto Island

Mon 10/3

10:25 a.m.-2:45 p.m.

1 stop5h 20m

C$ 397

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Mon 3/3

7:12 a.m.-9:58 a.m.

Nonstop1h 46m

Toronto Pearson Intl

Mon 10/3

9:00 p.m.-10:06 p.m.

Nonstop2h 06m

C$ 407

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

Mon 10/2

5:35 a.m.-3:00 p.m.

1 stop8h 25m

Montreal Pierre Elliott Trudeau Intl

Wed 12/2

3:55 p.m.-11:58 p.m.

1 stop9h 03m

C$ 412

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

Thu 6/3

11:15 a.m.-5:09 p.m.

1 stop4h 54m

Ottawa

Thu 13/3

7:00 a.m.-10:20 a.m.

1 stop4h 20m

C$ 423

Flights are sorted by cheapest round-trip flights first.

Deals found on 19/1

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

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, January is the cheapest month in which you can book a flight from Chicago to Region of Ontario (average of C$ 168). 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 21 January 2025.

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 21 January 2025.

The most flights from CHI to CAON are scheduled on a Monday (52 on average). You will have fewer flight options on Saturday, 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 21 January 2025.
Read through reviews of airlines operating flights from Chicago to Ontario, such as American Airlines, Delta and United Airlines. 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
8,521 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

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
8,521 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 10

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

Porter Airlines
7.9
Good
277 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 10

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

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

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
381 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 10

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

Aeromexico
7.5
Good
1,849 reviews
Delta
8.0
Very good
8,521 reviews
Check prices

Comfort

8.0

Crew

8.6

Entertainment

7.9

Overall

8.0

Food

7.3

Boarding

8.2

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$ 160. American Airlines flights start at C$ 179 while deals on Air Canada start at C$ 183 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: Royal Jordanian (94%), Egyptair (91%), Qatar Airways( 90%).

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

    The cheapest flight price from Chicago to Region of Ontario is C$ 206. On average you can expect to pay C$ 564. The most popular route, (Chicago O'Hare Intl - Toronto Pearson Intl), can usually be booked for C$ 373.

  • 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, January is the cheapest month in which you can book a flight from Chicago to Region of Ontario (average of C$ 168). 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

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

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 629,999 searches. Data last updated 21 January 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 189AverageC$ 500FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 196AverageC$ 506FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 314AverageC$ 438FlexibilityNo 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!

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.