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

As of May 2026, there are 108 flights per day flying from Illinois to Region of Ontario. The most common time of day flights depart is 10:00a.m., with 42% of flights taking off at noon.

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

As of May 2026, there are 758 flights per week flying from Illinois to Region of Ontario. The most common day of the week flights depart is Fri, with 15% of flights taking off on this day.

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

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

Which airlines fly to Region of Ontario?

United Airlines, Air Canada and American Airlines are the top three most popular airlines that fly to Region of Ontario from Illinois according to our data. United Airlines is the first choice among our users, with 53% of people opting to fly with this airline when travelling to Region of Ontario. Keep in mind that there are 3 different airlines that fly to Region of Ontario on a routine basis, so you have a few additional options to choose from.

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 3 operators available for flights from Illinois to Ontario as of May 2026.

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$ 133 Cheap Flights from Illinois to Ontario in 2026

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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.

11:45 a.m. - 2:25 p.m.

ORD

YTZ

1h 40mdirect

8:40 p.m. - 9:35 p.m.

YTZ

ORD

1h 55mdirect

C$ 298Porter Airlines

Tue, 22 Sep - Thu, 24 Sep

11:45 a.m. - 2:25 p.m.

ORD

YTZ

1h 40mdirect

8:40 p.m. - 9:35 p.m.

YTZ

ORD

1h 55mdirect

C$ 301Porter Airlines

Tue, 1 Sep - Tue, 8 Sep

7:25 a.m. - 10:06 a.m.

ORD

YTZ

1h 41mdirect

12:15 p.m. - 1:10 p.m.

YTZ

ORD

1h 55mdirect

C$ 309Air Canada

Tue, 2 Jun - Tue, 9 Jun

7:25 a.m. - 10:06 a.m.

ORD

YTZ

1h 41mdirect

12:15 p.m. - 1:10 p.m.

YTZ

ORD

1h 55mdirect

C$ 310Air Canada

Wed, 3 Jun - Wed, 10 Jun

9:22 a.m. - 1:30 p.m.

MDW

YYZ

3h 08m

1 stop

6:30 a.m. - 1:19 p.m.

YYZ

MDW

7h 49m

1 stop

C$ 416Delta

Thu, 28 May - Sun, 31 May

9:17 a.m. - 1:34 p.m.

MDW

YYZ

3h 17m

1 stop

6:05 a.m. - 12:46 p.m.

YYZ

MDW

7h 41m

1 stop

C$ 443Delta

Wed, 24 Jun - Mon, 29 Jun

6:35 a.m. - 5:44 p.m.

STL

YYZ

10h 09m

1 stop

3:13 p.m. - 12:16 a.m.

YYZ

STL

10h 03m

1 stop

C$ 533American Airlines

Tue, 2 Jun - Tue, 9 Jun

4:17 p.m. - 4:45 p.m.

STL

YYZ

23h 28m

1 stop

6:30 a.m. - 8:52 a.m.

YYZ

STL

27h 22m

2 stops

C$ 539Multiple Airlines

Tue, 9 Jun - Tue, 16 Jun

9:09 a.m. - 5:44 p.m.

STL

YYZ

7h 35m

1 stop

7:25 a.m. - 2:02 p.m.

YYZ

STL

7h 37m

1 stop

C$ 560American Airlines

Wed, 17 Jun - Wed, 24 Jun

5:27 p.m. - 2:05 p.m.

STL

YYZ

19h 38m

2 stops

7:45 a.m. - 11:49 p.m.

YYZ

STL

17h 04m

1 stop

C$ 566Multiple Airlines

Wed, 3 Jun - Wed, 10 Jun

American Airlines flights from Illinois to Region of Ontario

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

American Airlines

6 Jun

ORD8:29 p.m.Chicago O'Hare Intl

1h 54m

YYZ11:23 p.m.Toronto Pearson Intl

13 Jun

YYZ3:13 p.m.Toronto Pearson Intl

2h 05m

ORD4:18 p.m.Chicago O'Hare Intl

C$ 380

American Airlines

6 Jun

ORD1:19 p.m.Chicago O'Hare Intl

8h 11m

1 stop

YYZ10:30 p.m.Toronto Pearson Intl

7 Jun

YYZ7:25 a.m.Toronto Pearson Intl

2h 10m

ORD8:35 a.m.Chicago O'Hare Intl

C$ 394

American Airlines

23 May

ORD8:30 p.m.Chicago O'Hare Intl

1h 54m

YYZ11:24 p.m.Toronto Pearson Intl

24 May

YYZ7:24 p.m.Toronto Pearson Intl

5h 35m

1 stop

ORD11:59 p.m.Chicago O'Hare Intl

C$ 402

Air Canada flights from Illinois to Region of Ontario

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

Air Canada

2 Jun

ORD7:25 a.m.Chicago O'Hare Intl

1h 41m

YTZ10:06 a.m.Toronto Island

9 Jun

YTZ12:15 p.m.Toronto Island

1h 55m

ORD1:10 p.m.Chicago O'Hare Intl

C$ 309

Air Canada

3 Jun

ORD7:25 a.m.Chicago O'Hare Intl

1h 41m

YTZ10:06 a.m.Toronto Island

10 Jun

YTZ12:15 p.m.Toronto Island

1h 55m

ORD1:10 p.m.Chicago O'Hare Intl

C$ 310

Air Canada

28 May

ORD9:55 a.m.Chicago O'Hare Intl

1h 40m

YYZ12:35 p.m.Toronto Pearson Intl

31 May

YYZ6:40 p.m.Toronto Pearson Intl

2h 00m

ORD7:40 p.m.Chicago O'Hare Intl

C$ 313

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 22/9

11:45 a.m.-2:25 p.m.

Nonstop1h 40m

Toronto Island

Thu 24/9

8:40 p.m.-9:35 p.m.

Nonstop1h 55m

C$ 298

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 1/9

11:45 a.m.-2:25 p.m.

Nonstop1h 40m

Toronto Island

Tue 8/9

8:40 p.m.-9:35 p.m.

Nonstop1h 55m

C$ 301

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Tue 2/6

7:25 a.m.-10:06 a.m.

Nonstop1h 41m

Toronto Island

Tue 9/6

12:15 p.m.-1:10 p.m.

Nonstop1h 55m

C$ 309

ChicagoToronto

ORD - YTZ

ORDYTZ

Chicago O'Hare Intl

Wed 3/6

7:25 a.m.-10:06 a.m.

Nonstop1h 41m

Toronto Island

Wed 10/6

12:15 p.m.-1:10 p.m.

Nonstop1h 55m

C$ 310

ChicagoToronto

MDW - YYZ

MDWYYZ

Chicago Midway

Thu 28/5

9:22 a.m.-1:30 p.m.

1 stop3h 08m

Toronto Pearson Intl

Sun 31/5

6:30 a.m.-1:19 p.m.

1 stop7h 49m

C$ 416

ChicagoToronto

MDW - YYZ

MDWYYZ

Chicago Midway

Wed 24/6

9:17 a.m.-1:34 p.m.

1 stop3h 17m

Toronto Pearson Intl

Mon 29/6

6:05 a.m.-12:46 p.m.

1 stop7h 41m

C$ 443

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 2/6

6:35 a.m.-5:44 p.m.

1 stop10h 09m

Toronto Pearson Intl

Tue 9/6

3:13 p.m.-12:16 a.m.

1 stop10h 03m

C$ 533

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Tue 9/6

4:17 p.m.-4:45 p.m.

1 stop23h 28m

Toronto Pearson Intl

Tue 16/6

6:30 a.m.-8:52 a.m.

2 stops27h 22m

C$ 539

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 17/6

9:09 a.m.-5:44 p.m.

1 stop7h 35m

Toronto Pearson Intl

Wed 24/6

7:25 a.m.-2:02 p.m.

1 stop7h 37m

C$ 560

St. LouisToronto

STL - YYZ

STLYYZ

Lambert-St Louis

Wed 3/6

5:27 p.m.-2:05 p.m.

2 stops19h 38m

Toronto Pearson Intl

Wed 10/6

7:45 a.m.-11:49 p.m.

1 stop17h 04m

C$ 566

Flights are sorted by cheapest round-trip flights first.

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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

Prices

Airlines

Other information

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

In general, November 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$ 79. If you are unable to visit Region of Ontario during the month of November, then departing from Illinois during the month March is also very affordable. Most momondo users find prices during this month for around C$ 79.

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$ 268. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 504.

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$ 259. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are C$ 449 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 Midway to Toronto Island for the best Illinois - Ontario flight prices

How far in advance should I book a flight from Illinois to 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$ 417 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$ 277 on momondo.

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$ 128
Fastest flight time	1h 39m
Direct flights	Every day
Airports in Region of Ontario	125 airports

The best one-way flight to Region of Ontario from Illinois in the past 72 hours is C$ 128. The best round-trip flight deal from Illinois to Region of Ontario found on momondo in the last 72 hours is C$ 147.

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 125 airports in Region of Ontario. From Illinois there are direct flights to Toronto Pearson Intl (YYZ), Toronto Island (YTZ).

Search flight deals

Frequently asked questions about flying 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 3 operators available for flights from Illinois to Ontario as of May 2026.
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 De Havilland (Bombardier) DHC-8-400 Dash 8Q, making up 16.66% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 11.99%, Embraer 175 with 8.64%, and Embraer 170 with 8.22%.

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
American Airlines	PriceFrom C$ 133	Free Cancellation	Rating 7.1 11,670 reviews	Search American Airlines flights
United Airlines	PriceFrom C$ 258	Free Cancellation	Rating 7.4 9,693 reviews	Search United Airlines flights
Air Canada	PriceFrom C$ 282	Free Cancellation	Rating 7.1 11,008 reviews	Search Air Canada 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.

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Popular Cities in Ontario

Flights to Torontofrom C$ 186

Flights to Vancouverfrom C$ 105

Flights to Montrealfrom C$ 232

Flights to Calgaryfrom C$ 160

Flights to Ottawafrom C$ 224

Flights to Winnipegfrom C$ 194

Flights to Halifaxfrom C$ 197

Flights to Kelownafrom C$ 163

Flights to Saskatoonfrom C$ 194

Flights to Reginafrom C$ 171

Flights to St. John'sfrom C$ 271

Flights to Québec Cityfrom C$ 212

Cheap flights from Illinois to Ontario from C$ 133

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 22/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names, great deals

Filter for what you want

Filter for what you want

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American Airlines flights from Illinois to Region of Ontario

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

Air Canada flights from Illinois to Region of Ontario

Our best Air Canada 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.

See travel insights to Ontario from

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

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?

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?

How far in advance should I book a flight from Illinois to Ontario?

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

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

Which airlines fly to Region of Ontario?

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

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

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

Frequently asked questions about flying from Illinois to 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?

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

Illinois flight routes

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year

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