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$105+ Cheap flights from Chicago (CHI) to Ontario

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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — YYZ
ene. 26 — feb. 21
dom. 1/26
dom. 2/2
1 adult, Economy
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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 enero 21, 2025.

Round-trip from

$197
(flugladen.de)

One-way from

$105
(Kiwi.com)
From Chicago (CHI) to Ontario
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One-way flight from Chicago (CHI) to Ontario
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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 enero 21, 2025.

This flugladen.de deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure flugladen.de is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 2/131:05 pmMDW - YTZ
Nonstop1h 42mPorter Airlines
dom. 2/1611:20 amYTZ - MDW
Nonstop1h 50mPorter Airlines
Deal found 1/20$197
This Mytrip deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/611:15 amMDW - YTZ
Nonstop1h 42mMultiple Airlines
jue. 3/133:50 pmYTZ - MDW
Nonstop1h 50mMultiple Airlines
Deal found 1/20$212
This Trip.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/2212:55 pmMDW - YTZ
Nonstop1h 42mAir Transat
mié. 3/269:30 amYTZ - MDW
Nonstop1h 50mAir Transat
Deal found 1/20$240
This Trip.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/281:05 pmMDW - YUL
1 stop5h 20mPorter Airlines
dom. 3/26:50 amYUL - MDW
1 stop4h 30mPorter Airlines
Deal found 1/20$247
This Kiwi.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 2/257:10 amORD - YUL
1 stop9h 25mMultiple Airlines
mar. 3/116:35 pmYUL - ORD
1 stop15h 54mMultiple Airlines
Deal found 1/20$258
This Mytrip deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/510:25 amORD - YYZ
1 stop12h 30mMultiple Airlines
mié. 3/1212:25 pmYYZ - ORD
1 stop12h 42mMultiple Airlines
Deal found 1/20$258
This Mytrip deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/45:00 amORD - YTZ
2 stops16h 23mMultiple Airlines
mar. 3/112:00 pmYTZ - ORD
2 stops20h 29mMultiple Airlines
Deal found 1/20$270
This Gotogate deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/33:35 pmORD - YTZ
1 stop5h 15mAir Canada
lun. 3/1010:25 amYTZ - ORD
1 stop5h 20mAir Canada
Deal found 1/19$276
This Gotogate deal was found by Cheapflights users on 1/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/37:12 amORD - YYZ
Nonstop1h 46mAir Canada
lun. 3/109:00 pmYYZ - ORD
Nonstop2h 06mAir Canada
Deal found 1/19$283
This Flightnetwork deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/611:15 amMDW - YOW
1 stop4h 54mPorter Airlines
jue. 3/137:00 amYOW - MDW
1 stop4h 20mPorter Airlines
Deal found 1/20$294
This Kiwi.com deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/125:15 amORD - YOW
1 stop9h 40mMultiple Airlines
jue. 2/139:50 amYOW - ORD
1 stop12h 43mMultiple Airlines
Deal found 1/20$297
This American Airlines deal was found by Cheapflights users on 1/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/143:00 pmORD - YYZ
Nonstop1h 30mAmerican Airlines
mar. 2/186:15 amYYZ - ORD
Nonstop2h 15mAmerican Airlines
Deal found 1/20$297

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 2,558,603 searches. Data last updated enero 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

jue. 2/13

1:05 pm-3:47 pm

Nonstop1h 42m

Toronto Island

dom. 2/16

11:20 am-12:10 pm

Nonstop1h 50m

$197

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

jue. 3/6

11:15 am-1:57 pm

Nonstop1h 42m

Toronto Island

jue. 3/13

3:50 pm-4:40 pm

Nonstop1h 50m

$212

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

sáb. 3/22

12:55 pm-3:37 pm

Nonstop1h 42m

Toronto Island

mié. 3/26

9:30 am-10:20 am

Nonstop1h 50m

$240

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

vie. 2/28

1:05 pm-7:25 pm

1 stop5h 20m

Montreal Pierre Elliott Trudeau Intl

dom. 3/2

6:50 am-10:20 am

1 stop4h 30m

$247

ChicagoMontreal

ORD - YUL

ORDYUL

Chicago O'Hare Intl

mar. 2/25

7:10 am-5:35 pm

1 stop9h 25m

Montreal Pierre Elliott Trudeau Intl

mar. 3/11

6:35 pm-9:29 am

1 stop15h 54m

$258

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

mié. 3/5

10:25 am-11:55 pm

1 stop12h 30m

Toronto Pearson Intl

mié. 3/12

12:25 pm-12:07 am

1 stop12h 42m

$258

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

mar. 3/18

11:35 am-5:50 pm

1 stop5h 15m

Toronto Island

mié. 3/19

8:50 am-12:56 pm

1 stop5h 06m

$261

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

mar. 3/4

5:00 am-10:23 pm

2 stops16h 23m

Toronto Island

mar. 3/11

2:00 pm-9:29 am

2 stops20h 29m

$270

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

mar. 3/18

2:05 pm-4:46 pm

Nonstop1h 41m

Toronto Pearson Intl

mié. 3/19

2:00 pm-2:51 pm

Nonstop1h 51m

$281

ChicagoOttawa

MDW - YOW

MDWYOW

Chicago Midway

jue. 3/6

11:15 am-5:09 pm

1 stop4h 54m

Ottawa

jue. 3/13

7:00 am-10:20 am

1 stop4h 20m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/19

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, January is the cheapest month in which you can book a flight from Chicago to Region of Ontario (average of $243). Flying from Chicago to Region of Ontario in July is currently the most expensive (average of $359). 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 enero 21, 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 enero 21, 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 2.0 - 3.3 inches per month. June is typically the wettest month, when rainfall can reach 3.3 in. February is typically the driest time to visit Region of Ontario when rainfall is around 2.0 in.

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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 21.2 F).

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 enero 21, 2025.
Read through reviews of airlines operating flights from Chicago to Ontario, such as American Airlines, Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,521 reviews

Boarding

8.2

Food

7.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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

Boarding

8.2

Food

7.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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

Boarding

8.2

Food

7.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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

Boarding

8.2

Food

7.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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

Boarding

8.2

Food

7.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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
8,985 reviews
Delta
8.0
Very good
8,521 reviews

Boarding

8.2

Food

7.3

Crew

8.6

Comfort

8.0

Overall

8.0

Entertainment

7.9

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 $111. American Airlines flights start at $124 while deals on Air Canada start at $127 one-way.

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

    Most travelers choose Chicago O'Hare Intl - Toronto Pearson Intl, Chicago O'Hare Intl - Montreal Pierre Elliott Trudeau Intl or Chicago Midway - Toronto Island when deciding on the best route from Chicago to Region of Ontario.

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

    Consider Royal Jordanian (94%), Egyptair (91%) or Qatar Airways (90%) when booking your flight. These represent the most reliable airlines when flying from Chicago to Region of Ontario.

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

    Looking at all options, your cheapest flight can be booked for $121. While the most popular route (Chicago O'Hare Intl - Toronto Pearson Intl) can be booked for $276 on average our data indicates $967 when flying from Chicago to Region of Ontario.

  • 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 $243). Flying from Chicago to Region of Ontario in July is currently the most expensive (average of $359). 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.

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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 4 airlines flying from Chicago to Ontario

Discover the top 4 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 2,558,603 searches. Data last updated enero 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$122Average$342FlexibilityNo cancel feeOn-time52%
American AirlinesCheapest$122Average$333FlexibilityNo cancel feeOn-time71%
Air CanadaCheapest$122Average$446FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$148Average$552FlexibilityNo cancel feeOn-time69%
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