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Cheap flights from Illinois to Ontario from C$ 117

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 22/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YYZ
23 Dec — 30 Dec1
1 adult

Cheap flight deals from Illinois to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) 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 18 December 2024.

Round-trip from

C$ 291

One-way from

C$ 117
12/1-24/1
  • 12/1-24/1
  • 2 total stops
  • 28h 13m total
  • Illinois to Ontario
Search Deals
22/1
  • 22/1
  • 1 total stop
  • 19h 50m total
  • Illinois to Ontario
Search Deals

Find flight deals from Illinois to Ontario

Cheapest flights from Illinois to Ontario
Explore the most affordable flight options available from Illinois to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 December 2024.

Tue 24/125:45 a.m.ORD - YYZ
1 stop29h 00mMultiple Airlines
Fri 10/17:00 a.m.YYZ - ORD
1 stop15h 16mMultiple Airlines
Deal found 17/12C$ 443
Thu 26/125:35 p.m.MDW - YTZ
Nonstop1h 42mPorter Airlines
Mon 6/13:50 p.m.YTZ - MDW
Nonstop1h 50mPorter Airlines
Deal found 16/12C$ 498
Tue 31/124:00 p.m.ORD - YYZ
Nonstop1h 41mUnited Airlines
Tue 31/129:00 p.m.YYZ - ORD
Nonstop2h 13mUnited Airlines
Deal found 17/12C$ 508
Fri 27/128:25 p.m.ORD - YYZ
Nonstop1h 41mAir Canada
Mon 13/16:40 p.m.YYZ - ORD
Nonstop1h 57mAir Canada
Deal found 17/12C$ 564
Thu 26/127:00 a.m.ORD - YYZ
1 stop8h 14mDelta
Tue 7/12:30 p.m.YYZ - ORD
1 stop6h 29mDelta
Deal found 16/12C$ 600
Thu 26/129:30 a.m.MDW - YYZ
1 stop5h 44mDelta
Mon 6/16:00 a.m.YYZ - MDW
1 stop8h 08mDelta
Deal found 16/12C$ 600
Sun 29/1211:15 a.m.MDW - YUL
1 stop4h 35mPorter Airlines
Thu 2/16:55 a.m.YUL - MDW
1 stop5h 15mPorter Airlines
Deal found 18/12C$ 607
Tue 24/124:55 p.m.ORD - YYZ
1 stop21h 35mAmerican Airlines
Thu 9/11:14 p.m.YYZ - ORD
Nonstop2h 00mAmerican Airlines
Deal found 17/12C$ 607
Fri 27/126:00 a.m.MDW - YTZ
2 stops11h 53mMultiple Airlines
Thu 2/13:50 p.m.YTZ - MDW
Nonstop1h 50mMultiple Airlines
Deal found 16/12C$ 621
Fri 20/126:00 a.m.MDW - YYZ
1 stop16h 50mMultiple Airlines
Thu 30/110:45 p.m.YYZ - MDW
2 stops20h 08mMultiple Airlines
Deal found 16/12C$ 623
Thu 19/128:30 a.m.ORD - YUL
1 stop29h 30mMultiple Airlines
Wed 8/111:50 a.m.YUL - ORD
2 stops8h 29mMultiple Airlines
Deal found 17/12C$ 650
Tue 24/123:53 p.m.STL - YYZ
1 stop18h 52mMultiple Airlines
Tue 31/127:05 a.m.YYZ - STL
1 stop9h 16mMultiple Airlines
Deal found 17/12C$ 651

Find flights from Illinois to Ontario within your budget

Customize your flight search to find flights from Illinois 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 18 December 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sun 12/1

7:00 a.m.-11:53 p.m.

1 stop15h 53m

Toronto Pearson Intl

Fri 24/1

9:25 a.m.-8:45 p.m.

1 stop12h 20m

C$ 291

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Sat 11/1

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

Nonstop1h 42m

Toronto Island

Fri 24/1

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

Nonstop1h 50m

C$ 308

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Thu 9/1

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

Nonstop1h 42m

Toronto Island

Sun 12/1

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

Nonstop1h 50m

C$ 356

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Wed 8/1

4:45 p.m.-8:30 a.m.

1 stop14h 45m

Toronto Island

Wed 15/1

9:00 a.m.-10:55 p.m.

1 stop14h 55m

C$ 374

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Sat 11/1

1:55 p.m.-8:43 p.m.

1 stop5h 48m

Toronto Island

Fri 24/1

8:25 a.m.-2:45 p.m.

1 stop7h 20m

C$ 376

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Mon 13/1

9:49 a.m.-12:30 p.m.

Nonstop1h 41m

Toronto Pearson Intl

Wed 15/1

11:31 a.m.-12:31 p.m.

Nonstop2h 00m

C$ 377

ChicagoToronto

MDW - YYZ

MDWYYZ

Chicago Midway

Fri 10/1

5:40 a.m.-1:50 p.m.

1 stop7h 10m

Toronto Pearson Intl

Sun 12/1

7:40 a.m.-3:16 p.m.

1 stop8h 36m

C$ 380

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sat 1/2

8:40 p.m.-11:20 p.m.

Nonstop1h 40m

Toronto Pearson Intl

Sat 8/2

2:00 p.m.-2:51 p.m.

Nonstop1h 51m

C$ 381

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 16/1

9:50 a.m.-12:30 p.m.

Nonstop1h 40m

Toronto Pearson Intl

Thu 23/1

9:00 p.m.-10:13 p.m.

Nonstop2h 13m

C$ 388

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 9/1

6:08 p.m.-9:58 a.m.

1 stop14h 50m

Toronto Pearson Intl

Sun 12/1

8:00 a.m.-8:57 a.m.

Nonstop1h 57m

C$ 393

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/12

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

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

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

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

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

Find hourly flight availability from Illinois 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 18 December 2024.

When flying from Illinois 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 Illinois to Region of Ontario

Explore weekly flight availability from Illinois 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 18 December 2024.

The most flights from USIL to CAON are scheduled on a Monday (53 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (4 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 18 December 2024.
Read through reviews of airlines operating flights from Illinois to Ontario, such as Delta, Air Canada and American 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.
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Crew

8.5

Entertainment

7.1

Food

7.2

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Alaska Airlines
8.0
Very good
9,554 reviews
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Crew

8.5

Entertainment

7.1

Food

7.2

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Delta
8.0
Very good
8,604 reviews
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Crew

8.5

Entertainment

7.1

Food

7.2

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Porter Airlines
7.9
Good
283 reviews
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Crew

8.5

Entertainment

7.1

Food

7.2

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Air Transat
7.8
Good
389 reviews
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Crew

8.5

Entertainment

7.1

Food

7.2

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

United Airlines
7.4
Good
9,055 reviews
Alaska Airlines
8.0
Very good
9,554 reviews
Check prices

Crew

8.5

Entertainment

7.1

Food

7.2

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 10

Things were good, crew was good. It was just the flight itself was very rough. Lots of turbulence, probably one of the shakiest flights I've been on. Kids throwing up, kids crying everywhere because of it.

Related info for your journey

Find useful and relevant information for your journey from Illinois 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 Illinois to Region of Ontario one-way?

    One-way options have recently been found by users for as low as C$ 167 on Air Canada. Other airlines that offer cheap prices include Porter Airlines from C$ 171 and Delta from C$ 174 one-way.

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

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

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

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

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

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

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

Discover the top 3 airlines that operate flights from Illinois 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 18 December 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapestC$ 188AverageC$ 492FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air CanadaCheapestC$ 199AverageC$ 494FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
Porter AirlinesCheapestC$ 311AverageC$ 434FlexibilityNo 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 Illinois to Ontario?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Ontario from Illinois today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Illinois to Ontario?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ontario from Illinois.

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

Yes! Cheapflights helps users easily find flights from Illinois to Ontario with no change fees.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Ontario from Illinois today and book when prices fit your budget.

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