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 45% 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.

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

As of November 2026, there are 479 flights per week flying from Illinois to Region of Ontario. The most common day of the week flights depart is Fri, with 16% of flights taking off on this day.

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

As of November 2026, there are 68 flights per day flying from Illinois to Region of Ontario. The most common time of day flights depart is 11:00a.m., with 40% of flights taking off at noon.

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

Porter Airlines, Air Canada, and United 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 3 operators available for flights from Illinois to Ontario as of November 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$ 167 Cheap Flights from Illinois to Ontario in 2026/27

Discover deals from 900+ travel sites with momondo.

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.

8:40 p.m. - 11:23 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 43mdirect

8:05 a.m. - 9:08 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mdirect

C$ 374Air Canada

Mon, 7 Dec - Mon, 14 Dec

12:15 p.m. - 3:00 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mdirect

10:29 a.m. - 11:34 a.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 376Porter Airlines

Mon, 7 Dec - Mon, 14 Dec

4:30 p.m. - 7:10 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 40mdirect

6:55 p.m. - 7:58 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mdirect

C$ 384Air Canada

Fri, 4 Dec - Sun, 6 Dec

6:20 p.m. - 9:05 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mdirect

10:29 a.m. - 11:34 a.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 388Porter Airlines

Thu, 3 Dec - Sun, 6 Dec

12:15 p.m. - 3:00 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mdirect

4:35 p.m. - 5:40 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 388Porter Airlines

Fri, 4 Dec - Sun, 6 Dec

7:05 a.m. - 1:46 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

5h 41m1 stop Montreal Pierre Elliott Trudeau Intl

8:05 a.m. - 9:08 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mdirect

C$ 389Air Canada

Mon, 7 Dec - Mon, 14 Dec

2:48 p.m. - 5:44 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 56mdirect

1:11 p.m. - 2:31 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mdirect

C$ 451American Airlines

Wed, 10 Feb - Tue, 16 Feb

5:29 p.m. - 11:47 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

5h 18m1 stop Philadelphia

11:45 a.m. - 1:10 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 25mdirect

C$ 465American Airlines

Wed, 25 Nov - Thu, 26 Nov

6:00 a.m. - 2:25 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

7h 25m1 stop Washington, D.C. Reagan-National

5:55 p.m. - 7:01 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 06mdirect

C$ 485United Airlines

Sun, 10 Jan - Sun, 10 Jan

5:00 a.m. - 11:48 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

5h 48m1 stop Newark

3:35 p.m. - 4:44 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 09mdirect

C$ 485United Airlines

Wed, 25 Nov - Wed, 25 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

1:55 p.m. - 4:42 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 47mdirect

12:05 p.m. - 1:20 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 15mdirect

C$ 314Air Canada

Wed, 18 Nov - Sat, 21 Nov

7:03 a.m. - 9:47 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 44mdirect

6:21 p.m. - 7:41 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mdirect

C$ 423Multiple Airlines

Mon, 16 Nov - Mon, 16 Nov

8:45 p.m. - 11:46 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

2h 01mdirect

1:17 p.m. - 2:37 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mdirect

C$ 555British Airways

Sun, 15 Nov - Wed, 18 Nov

8:45 p.m. - 11:46 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

2h 01mdirect

6:21 p.m. - 7:41 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mdirect

C$ 555Qantas Airways

Mon, 16 Nov - Fri, 20 Nov

7:05 a.m. - 2:45 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

6h 40m1 stop Montreal Pierre Elliott Trudeau Intl

6:20 a.m. - 11:07 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

5h 47m1 stop Montreal Pierre Elliott Trudeau Intl

C$ 684Air Canada

Tue, 17 Nov - Mon, 23 Nov

7:03 a.m. - 9:47 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 44mdirect

10:53 a.m. - 11:57 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 04mdirect

C$ 753United Airlines

Wed, 18 Nov - Wed, 25 Nov

1:57 p.m. - 4:47 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mdirect

6:45 a.m. - 7:54 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 09mdirect

C$ 753United Airlines

Wed, 18 Nov - Wed, 25 Nov

8:45 a.m. - 11:27 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 42mdirect

4:30 p.m. - 5:43 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 13mdirect

C$ 753Air Canada

Tue, 17 Nov - Tue, 24 Nov

6:59 a.m. - 1:01 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

5h 02m1 stop New York LaGuardia

6:07 p.m. - 11:59 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

6h 52m1 stop Charlotte Douglas

C$ 793American Airlines

Wed, 18 Nov - Wed, 25 Nov

9:42 a.m. - 12:32 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mdirect

1:17 p.m. - 2:37 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mdirect

C$ 821American Airlines

Mon, 16 Nov - Wed, 18 Nov

Cheap direct flights

Enter your travel dates to find the best prices.

8:40 p.m. - 11:23 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 43mdirect

8:05 a.m. - 9:08 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mdirect

C$ 374Air Canada

Mon, 7 Dec - Mon, 14 Dec

12:15 p.m. - 3:00 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mdirect

10:29 a.m. - 11:34 a.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 376Porter Airlines

Mon, 7 Dec - Mon, 14 Dec

4:30 p.m. - 7:10 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 40mdirect

6:55 p.m. - 7:58 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mdirect

C$ 384Air Canada

Fri, 4 Dec - Sun, 6 Dec

12:15 p.m. - 3:00 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mdirect

4:35 p.m. - 5:40 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 388Porter Airlines

Fri, 4 Dec - Sun, 6 Dec

6:20 p.m. - 9:05 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 45mdirect

10:29 a.m. - 11:34 a.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 388Porter Airlines

Thu, 3 Dec - Sun, 6 Dec

1:55 p.m. - 4:42 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 47mdirect

7:40 p.m. - 8:55 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 15mdirect

C$ 391Air Canada

Mon, 7 Dec - Mon, 14 Dec

2:48 p.m. - 5:44 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 56mdirect

1:11 p.m. - 2:31 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mdirect

C$ 451American Airlines

Wed, 10 Feb - Tue, 16 Feb

6:54 a.m. - 9:47 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 53mdirect

7:26 p.m. - 8:40 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 14mdirect

C$ 505United Airlines

Fri, 25 Dec - Thu, 31 Dec

3:47 p.m. - 6:45 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 58mdirect

6:45 a.m. - 7:54 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 09mdirect

C$ 505United Airlines

Fri, 4 Dec - Tue, 15 Dec

9:42 a.m. - 12:35 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 53mdirect

6:23 p.m. - 7:43 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mdirect

C$ 505American Airlines

Fri, 11 Dec - Mon, 14 Dec

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Lufthansa flights from Illinois to Region of Ontario

Our best Lufthansa deals on Illinois to Region of Ontario flight tickets

Lufthansa

3 Dec

ORD9:21 p.m.Chicago O'Hare Intl

1h 38m

YYZ11:59 p.m.Toronto Pearson Intl

6 Dec

YYZ8:35 a.m.Toronto Pearson Intl

2h 09m

ORD9:44 a.m.Chicago O'Hare Intl

C$ 422

Lufthansa

3 Dec

ORD9:21 p.m.Chicago O'Hare Intl

1h 38m

YYZ11:59 p.m.Toronto Pearson Intl

6 Dec

YYZ8:35 a.m.Toronto Pearson Intl

2h 09m

ORD9:44 a.m.Chicago O'Hare Intl

C$ 428

Lufthansa

3 Dec

ORD9:21 p.m.Chicago O'Hare Intl

1h 38m

YYZ11:59 p.m.Toronto Pearson Intl

6 Dec

YYZ8:35 a.m.Toronto Pearson Intl

2h 09m

ORD9:44 a.m.Chicago O'Hare Intl

C$ 431

Air Canada flights from Illinois to Region of Ontario

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

Air Canada

18 Nov

ORD1:55 p.m.Chicago O'Hare Intl

1h 47m

YTZ4:42 p.m.Toronto Island

21 Nov

YTZ12:05 p.m.Toronto Island

2h 15m

ORD1:20 p.m.Chicago O'Hare Intl

C$ 314

Air Canada

7 Dec

ORD8:40 p.m.Chicago O'Hare Intl

1h 43m

YYZ11:23 p.m.Toronto Pearson Intl

14 Dec

YYZ8:05 a.m.Toronto Pearson Intl

2h 03m

ORD9:08 a.m.Chicago O'Hare Intl

C$ 374

Air Canada

4 Dec

ORD4:30 p.m.Chicago O'Hare Intl

1h 40m

YYZ7:10 p.m.Toronto Pearson Intl

6 Dec

YYZ6:55 p.m.Toronto Pearson Intl

2h 03m

ORD7:58 p.m.Chicago O'Hare Intl

C$ 384

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Mon 7/12

8:40 p.m.-11:23 p.m.

Nonstop1h 43m

Toronto Pearson Intl

Mon 14/12

8:05 a.m.-9:08 a.m.

Nonstop2h 03m

C$ 374

ChicagoToronto

ORD Chicago O'Hare Intl - YTZ Toronto Island

ORDYTZ

Chicago O'Hare Intl

Mon 7/12

12:15 p.m.-3:00 p.m.

Nonstop1h 45m

Toronto Island

Mon 14/12

10:29 a.m.-11:34 a.m.

Nonstop2h 05m

C$ 376

Quickest round-trip

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Fri 4/12

4:30 p.m.-7:10 p.m.

Nonstop1h 40m

Toronto Pearson Intl

Sun 6/12

6:55 p.m.-7:58 p.m.

Nonstop2h 03m

C$ 384

ChicagoToronto

ORD Chicago O'Hare Intl - YTZ Toronto Island

ORDYTZ

Chicago O'Hare Intl

Thu 3/12

6:20 p.m.-9:05 p.m.

Nonstop1h 45m

Toronto Island

Sun 6/12

10:29 a.m.-11:34 a.m.

Nonstop2h 05m

C$ 388

ChicagoToronto

ORD Chicago O'Hare Intl - YTZ Toronto Island

ORDYTZ

Chicago O'Hare Intl

Fri 4/12

12:15 p.m.-3:00 p.m.

Nonstop1h 45m

Toronto Island

Sun 6/12

4:35 p.m.-5:40 p.m.

Nonstop2h 05m

C$ 388

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Mon 7/12

7:05 a.m.-1:46 p.m.

1 stop5h 41m

Toronto Pearson Intl

Mon 14/12

8:05 a.m.-9:08 a.m.

Nonstop2h 03m

C$ 389

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Wed 10/2

2:48 p.m.-5:44 p.m.

Nonstop1h 56m

Toronto Pearson Intl

Tue 16/2

1:11 p.m.-2:31 p.m.

Nonstop2h 20m

C$ 451

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Wed 25/11

5:29 p.m.-11:47 p.m.

1 stop5h 18m

Toronto Pearson Intl

Thu 26/11

11:45 a.m.-1:10 p.m.

Nonstop2h 25m

C$ 465

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Sun 10/1

6:00 a.m.-2:25 p.m.

1 stop7h 25m

Toronto Pearson Intl

Sun 10/1

5:55 p.m.-7:01 p.m.

Nonstop2h 06m

C$ 485

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Wed 25/11

5:00 a.m.-11:48 a.m.

1 stop5h 48m

Toronto Pearson Intl

Wed 25/11

3:35 p.m.-4:44 p.m.

Nonstop2h 09m

C$ 485

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, February 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$ 421. If you are unable to visit Region of Ontario during the month of February, then departing from Illinois during the month June is also very affordable. Most momondo users find prices during this month for around C$ 435.

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 Tuesday. Travellers who choose to depart for Region of Ontario on a Tuesday will often find tickets for as low as C$ 377. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 481.

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$ 372. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 482 on average. Flights to Region of Ontario from Illinois at noon 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 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$ 483 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$ 388 on momondo.

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

There are 4 cabin classes available to choose from on Illinois to Region of 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$ 167
Fastest flight time	1h 37m
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$ 167. The best round-trip flight deal from Illinois to Region of Ontario found on momondo in the last 72 hours is C$ 374.

The fastest flight from Illinois to Region of Ontario takes 1h 37m

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 November 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 24.12% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 12.82%, Embraer 175 with 12.13%, and Boeing 737-800 with 9.16%.

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$ 139	Free Cancellation	Rating 7.0 12,234 reviews	Search American Airlines flights
Air Canada	PriceFrom C$ 217	Free Cancellation	Rating 7.1 11,897 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 357	Free Cancellation	Rating 7.3 10,493 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

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Complete your trip

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Popular Cities in Ontario

Flights to Torontofrom C$ 151

Flights to Vancouverfrom C$ 108

Flights to Calgaryfrom C$ 64

Flights to Montrealfrom C$ 261

Flights to Winnipegfrom C$ 153

Flights to Halifaxfrom C$ 167

Flights to Ottawafrom C$ 207

Flights to Kelownafrom C$ 131

Flights to Saskatoonfrom C$ 220

Flights to St. John'sfrom C$ 292

Flights to Reginafrom C$ 314

Flights to Québec Cityfrom C$ 317

Cheap flights from Illinois to Ontario from C$ 167

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 23/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Illinois to Ontario

Cheap round-trip flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

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Price Alerts

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Lufthansa flights from Illinois to Region of Ontario

Our best Lufthansa 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

momondo Fare Finder

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?

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

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

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

Region of Ontario flight routes

According to popular flight searches on momondo this year

Fly your favourite airline to Ontario

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to Ontario

Explore popular destinations other users love

According to popular flight searches on momondo this year