How many flights depart from Illinois to Region of Ontario on average per week?

As of October 2025, there are 722 flights per week flying from Illinois to Region of Ontario. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

How many flights depart from Illinois to Region of Ontario on average per day?

As of October 2025, there are 103 flights per day flying from Illinois to Region of Ontario. The most common time of day flights depart is 6:00p.m., with 39% of flights taking off at noon.

What is the cheapest airline that flies from Illinois to Ontario?

American Airlines, Delta, and Porter Airlines are the most popular carriers operating from Illinois to Ontario

When did momondo last update prices for flights from Illinois to Ontario?

Prices for flights from Illinois to Ontario are updated daily.

How many operators does momondo search for flights from Illinois to Ontario?

There are 2 operators available for flights from Illinois to Ontario as of October 2025.

How old do you have to be to fly from Illinois to Ontario?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Ontario.

What documentation or ID do you need to fly to Ontario?

The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

C$ 107 Cheap Flights from Illinois to Ontario in 2025/26

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Find the cheapest flights from Illinois to Ontario

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:15 p.m. - 10:54 p.m.ORD-YYZ

1h 39mdirect

2:15 p.m. - 3:10 p.m.YYZ-ORD

1h 55mdirect

C$ 261Air Canada

Find Deal

Sun, 4 Jan - Wed, 7 Jan

8:12 a.m. - 5:40 p.m.ORD-YYZ

8h 28m1 stop

1:14 p.m. - 2:14 p.m.YYZ-ORD

2h 00mdirect

C$ 271American Airlines

Find Deal

Fri, 6 Feb - Mon, 9 Feb

2:00 p.m. - 4:39 p.m.ORD-YYZ

1h 39mdirect

4:05 p.m. - 8:15 p.m.YYZ-ORD

5h 10m1 stop

C$ 278Multiple Airlines

Find Deal

Thu, 8 Jan - Sun, 11 Jan

1:13 p.m. - 4:02 p.m.ORD-YYZ

1h 49mdirect

3:30 p.m. - 4:40 p.m.YYZ-ORD

2h 10mdirect

C$ 314United Airlines

Find Deal

Tue, 30 Dec - Sun, 18 Jan

11:00 a.m. - 1:42 p.m.MDW-YTZ

1h 42mdirect

9:15 a.m. - 10:05 a.m.YTZ-MDW

1h 50mdirect

C$ 317Porter Airlines

Find Deal

Sun, 22 Mar - Fri, 3 Apr

7:06 p.m. - 9:07 p.m.ORD-YYZ

25h 01m1 stop

4:00 p.m. - 10:39 p.m.YYZ-ORD

7h 39m1 stop

C$ 321Multiple Airlines

Find Deal

Thu, 30 Oct - Mon, 3 Nov

4:15 p.m. - 6:57 p.m.MDW-YTZ

1h 42mdirect

2:30 p.m. - 3:20 p.m.YTZ-MDW

1h 50mdirect

C$ 324Porter Airlines

Find Deal

Thu, 6 Nov - Sun, 9 Nov

1:00 p.m. - 7:09 p.m.MDW-YYZ

5h 09m1 stop

7:45 a.m. - 12:35 p.m.YYZ-MDW

5h 50m1 stop

C$ 325Delta

Find Deal

Fri, 20 Feb - Wed, 25 Feb

9:30 a.m. - 4:01 p.m.MDW-YUL

5h 31m1 stop

12:45 p.m. - 6:31 p.m.YUL-MDW

6h 46m1 stop

C$ 329Delta

Find Deal

Wed, 1 Apr - Tue, 14 Apr

9:20 p.m. - 11:59 p.m.ORD-YYZ

1h 39mdirect

9:30 a.m. - 2:28 p.m.YYZ-ORD

5h 58m1 stop

C$ 336United Airlines

Find Deal

Sun, 4 Jan - Wed, 7 Jan

Air Canada flights from Illinois to Region of Ontario

Our best Air Canada deals on Illinois to Region of Ontario flight tickets

Air Canada

4 Jan

ORD8:15 p.m.Chicago O'Hare Intl

1h 39m

YYZ10:54 p.m.Toronto Pearson Intl

7 Jan

YYZ2:15 p.m.Toronto Pearson Intl

1h 55m

ORD3:10 p.m.Chicago O'Hare Intl

C$ 261

Find similar

Air Canada

2 Feb

ORD7:15 a.m.Chicago O'Hare Intl

5h 25m

1 stop

YYZ1:40 p.m.Toronto Pearson Intl

9 Feb

YYZ12:05 p.m.Toronto Pearson Intl

1h 56m

ORD1:01 p.m.Chicago O'Hare Intl

C$ 289

Find similar

Air Canada

2 Jan

ORD2:00 p.m.Chicago O'Hare Intl

1h 39m

YYZ4:39 p.m.Toronto Pearson Intl

16 Jan

YYZ1:00 p.m.Toronto Pearson Intl

8h 00m

1 stop

ORD8:00 p.m.Chicago O'Hare Intl

C$ 322

Find similar

United Airlines flights from Illinois to Region of Ontario

Our best United Airlines deals on Illinois to Region of Ontario flight tickets

United Airlines

30 Dec

ORD1:13 p.m.Chicago O'Hare Intl

1h 49m

YYZ4:02 p.m.Toronto Pearson Intl

18 Jan

YYZ3:30 p.m.Toronto Pearson Intl

2h 10m

ORD4:40 p.m.Chicago O'Hare Intl

C$ 314

Find similar

United Airlines

4 Jan

ORD9:20 p.m.Chicago O'Hare Intl

1h 39m

YYZ11:59 p.m.Toronto Pearson Intl

7 Jan

YYZ9:30 a.m.Toronto Pearson Intl

5h 58m

1 stop

ORD2:28 p.m.Chicago O'Hare Intl

C$ 336

Find similar

United Airlines

19 Oct

ORD9:12 p.m.Chicago O'Hare Intl

1h 46m

YYZ11:58 p.m.Toronto Pearson Intl

2 Nov

YYZ9:00 a.m.Toronto Pearson Intl

2h 05m

ORD10:05 a.m.Chicago O'Hare Intl

C$ 538

Find similar

Fly from

Fly to

Route

Depart

Return

Price

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sun 4/1

8:15 p.m.-10:54 p.m.

Nonstop1h 39m

Toronto Pearson Intl

Wed 7/1

2:15 p.m.-3:10 p.m.

Nonstop1h 55m

C$ 261

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Fri 6/2

8:12 a.m.-5:40 p.m.

1 stop8h 28m

Toronto Pearson Intl

Mon 9/2

1:14 p.m.-2:14 p.m.

Nonstop2h 00m

C$ 271

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 8/1

2:00 p.m.-4:39 p.m.

Nonstop1h 39m

Toronto Pearson Intl

Sun 11/1

4:05 p.m.-8:15 p.m.

1 stop5h 10m

C$ 278

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Tue 30/12

1:13 p.m.-4:02 p.m.

Nonstop1h 49m

Toronto Pearson Intl

Sun 18/1

3:30 p.m.-4:40 p.m.

Nonstop2h 10m

C$ 314

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Sun 22/3

11:00 a.m.-1:42 p.m.

Nonstop1h 42m

Toronto Island

Fri 3/4

9:15 a.m.-10:05 a.m.

Nonstop1h 50m

C$ 317

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Thu 30/10

7:06 p.m.-9:07 p.m.

1 stop25h 01m

Toronto Pearson Intl

Mon 3/11

4:00 p.m.-10:39 p.m.

1 stop7h 39m

C$ 321

ChicagoToronto

MDW - YTZ

MDWYTZ

Chicago Midway

Thu 6/11

4:15 p.m.-6:57 p.m.

Nonstop1h 42m

Toronto Island

Sun 9/11

2:30 p.m.-3:20 p.m.

Nonstop1h 50m

C$ 324

ChicagoToronto

MDW - YYZ

MDWYYZ

Chicago Midway

Fri 20/2

1:00 p.m.-7:09 p.m.

1 stop5h 09m

Toronto Pearson Intl

Wed 25/2

7:45 a.m.-12:35 p.m.

1 stop5h 50m

C$ 325

ChicagoMontreal

MDW - YUL

MDWYUL

Chicago Midway

Wed 1/4

9:30 a.m.-4:01 p.m.

1 stop5h 31m

Montreal Pierre Elliott Trudeau Intl

Tue 14/4

12:45 p.m.-6:31 p.m.

1 stop6h 46m

C$ 329

ChicagoToronto

ORD - YYZ

ORDYYZ

Chicago O'Hare Intl

Sun 4/1

9:20 p.m.-11:59 p.m.

Nonstop1h 39m

Toronto Pearson Intl

Wed 7/1

9:30 a.m.-2:28 p.m.

1 stop5h 58m

C$ 336

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois to Region of Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Region of Ontario?

In general, September is the cheapest month to fly from Illinois to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 292. If you are unable to visit Region of Ontario during the month of September, then departing from Illinois during the month July is also very affordable. Most momondo users find prices during this month for around C$ 326.

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from Illinois to Region of Ontario is on a Thursday. Travellers who choose to depart for Region of Ontario on a Thursday will often find tickets for as low as C$ 323. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 586.

What is the cheapest time of day to depart on your flight to Region of Ontario?

Our most recent data shows that the best time of day to fly to Region of Ontario is in the evening. Flights from Illinois to Region of Ontario during this time can be as low as C$ 321. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 474 on average. Flights to Region of Ontario from Illinois in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Illinois to Ontario flight route?

Fly from Chicago O'Hare Intl to Toronto Pearson Intl for the best Illinois - Ontario flight prices

How far in advance should I book a flight to Region of Ontario?

You are more likely to see cheaper flights to Region of Ontario from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 429 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Region of Ontario from Illinois for as low as C$ 232 on momondo.

What cabin class options are available on Illinois to Ontario flights?

There are 3 cabin classes available to choose from on Illinois to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Region of Ontario flights?

No. A direct flight is the cheapest option for a flight between Illinois to Region of Ontario.

Cheap Illinois to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Region of Ontario

Best price found	C$ 117
Fastest flight time	1h 39m
Direct flights	Every day
Airports in Region of Ontario	2 airports

The best one-way flight to Region of Ontario from Illinois in the past 72 hours is C$ 117. The best round-trip flight deal from Illinois to Region of Ontario found on momondo in the last 72 hours is C$ 436.

The fastest flight from Illinois to Region of Ontario takes 1h 39m

Direct flights go from Illinois to Region of Ontario every day.

There are 2 airports near Region of Ontario: Toronto Pearson Intl (YYZ), Toronto Island (YTZ)

Search flight deals

When did momondo last update prices for flights from Illinois to Ontario?
Prices for flights from Illinois to Ontario are updated daily.
How many operators does momondo search for flights from Illinois to Ontario?
There are 2 operators available for flights from Illinois to Ontario as of October 2025.
How old do you have to be to fly from Illinois to Ontario?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Ontario.
What documentation or ID do you need to fly to Ontario?
The travel and health documents required for your trip to Ontario can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Illinois to Region of Ontario?
Based on momondo bookings for flights between Illinois and Region of Ontario, the leading plane model is Embraer 175 (Enhanced Winglets), making up 19.32% of the total bookings. Other popular models include De Havilland (Bombardier) DHC-8-400 Dash 8Q with 17.82%, Embraer 175 with 13.33%, and Boeing 737-800 with 7.14%.

Best airlines flying from Illinois to Region of Ontario

Compare and see reviews for airlines that fly from Illinois to Region of Ontario with momondo

Airline	Rating	Free Cancellation	Price
Air Canada	PriceFrom C$ 205	Free Cancellation	Rating 7.1 10,245 reviews		Search Air Canada flights
United Airlines	PriceFrom C$ 263	Free Cancellation	Rating 7.4 8,957 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Ontario?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Illinois to Ontario . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Illinois to Ontario with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Ontario from Illinois with this policy.

How can momondo help me find flights from Illinois to Ontario?

momondo provides multiple filters to help you find the best flight to Ontario from Illinois. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Illinois to Ontario right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Illinois to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Ontario

Popular Cities in Ontario

Flights to Torontofrom C$ 102

Flights to Vancouverfrom C$ 68

Flights to Montrealfrom C$ 179

Flights to Calgaryfrom C$ 59

Flights to Ottawafrom C$ 155

Flights to Winnipegfrom C$ 120

Flights to Halifaxfrom C$ 123

Flights to Kelownafrom C$ 61

Flights to Saskatoonfrom C$ 138

Flights to Reginafrom C$ 149

Flights to St. John'sfrom C$ 268

Flights to Québec Cityfrom C$ 293

Cheap flights from Illinois to Ontario from C$ 107

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Ontario departing on 10/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

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Find the cheapest flights from Illinois to Ontario

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Air Canada flights from Illinois to Region of Ontario

Our best Air Canada deals on Illinois to Region of Ontario flight tickets

United Airlines flights from Illinois to Region of Ontario

Our best United Airlines deals on Illinois to Region of Ontario flight tickets

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Use the filters below to find and compare flights from Illinois to Ontario that are best for you.

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How to get the cheapest flight ticket from Illinois to Region of Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Region of Ontario?

What is the cheapest day to depart on your flight to Region of Ontario?

The cheapest day to depart from Illinois to Region of Ontario is on a Thursday. Travellers who choose to depart for Region of Ontario on a Thursday will often find tickets for as low as C$ 323. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 586.

What is the cheapest time of day to depart on your flight to Region of Ontario?

What is the cheapest Illinois to Ontario flight route?

Fly from Chicago O'Hare Intl to Toronto Pearson Intl for the best Illinois - Ontario flight prices

How far in advance should I book a flight to Region of Ontario?

What cabin class options are available on Illinois to Ontario flights?

There are 3 cabin classes available to choose from on Illinois to Ontario flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to Region of Ontario flights?

No. A direct flight is the cheapest option for a flight between Illinois to Region of Ontario.

What is the cheapest airline that flies from Illinois to Ontario?

American Airlines, Delta, and Porter Airlines are the most popular carriers operating from Illinois to Ontario

How many flights depart from Illinois to Region of Ontario on average per day?

As of October 2025, there are 103 flights per day flying from Illinois to Region of Ontario. The most common time of day flights depart is 6:00p.m., with 39% of flights taking off at noon.

How many flights depart from Illinois to Region of Ontario on average per week?

As of October 2025, there are 722 flights per week flying from Illinois to Region of Ontario. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.

Cheap Illinois to Region of Ontario flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to Region of Ontario

Best price found

Fastest flight time

Direct flights

Airports in Region of Ontario

When did momondo last update prices for flights from Illinois to Ontario?

How many operators does momondo search for flights from Illinois to Ontario?

How old do you have to be to fly from Illinois to Ontario?

What documentation or ID do you need to fly to Ontario?

What is the most popular plane model from Illinois to Region of Ontario?

Best airlines flying from Illinois to Region of Ontario

Compare and see reviews for airlines that fly from Illinois to Region of Ontario with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to Ontario?

Can I find flights from Illinois to Ontario with flexible booking policies on momondo?

How can momondo help me find flights from Illinois to Ontario?

I’m not ready to book a flight from Illinois to Ontario right now. Can momondo alert me if prices change?

An easier way to manage your Region of Ontario trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Ontario

Popular Cities in Ontario

Popular flights according to clicks in the last 7 days on momondo