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 Chicago according to our data. United Airlines is the first choice among our users, with 44% 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 Chicago to Region of Ontario on average per week?

The number of flights available between Chicago and Region of Ontario is 699 per week as of September 2026. The most frequent departure day is Sun, with 16% of weekly flights leaving on this day.

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

Air Canada, United Airlines, and Delta are the most popular carriers operating from Chicago to Ontario

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

99 flights are operational daily from Chicago to Region of Ontario as of September 2026. The most popular departure time for this route is 8:00p.m., with 40% of flights per day taking off at noon.

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

Prices for flights from Chicago to Ontario refresh daily.

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

The number of operators available for flights from Chicago to Ontario is 3 as of September 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Ontario.

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

The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

C$ 133 Cheap Flights from Chicago to Ontario in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Chicago 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.MDW Chicago Midway-YTZ Toronto Island

1h 40mdirect

1:45 p.m. - 2:35 p.m.YTZ Toronto Island-MDW Chicago Midway

1h 50mdirect

C$ 298Porter Airlines

Sat, 17 Oct - Wed, 21 Oct

11:45 a.m. - 2:25 p.m.MDW Chicago Midway-YTZ Toronto Island

1h 40mdirect

10:10 a.m. - 11:00 a.m.YTZ Toronto Island-MDW Chicago Midway

1h 50mdirect

C$ 298Porter Airlines

Tue, 20 Oct - Sat, 24 Oct

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

1h 40mdirect

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

2h 03mdirect

C$ 298Air Canada

Tue, 1 Dec - Wed, 9 Dec

3:40 p.m. - 9:53 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

5h 13m1 stop Montreal Pierre Elliott Trudeau Intl

8:05 a.m. - 9:00 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 55mdirect

C$ 298Air Canada

Sat, 10 Oct - Mon, 12 Oct

11:45 a.m. - 2:25 p.m.MDW Chicago Midway-YTZ Toronto Island

1h 40mdirect

1:45 p.m. - 2:35 p.m.YTZ Toronto Island-MDW Chicago Midway

1h 50mdirect

C$ 298Porter Airlines

Thu, 22 Oct - Sat, 24 Oct

11:05 a.m. - 6:12 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

6h 07m1 stop Montreal Pierre Elliott Trudeau Intl

8:20 a.m. - 9:23 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 03mdirect

C$ 298Air Canada

Thu, 22 Oct - Sun, 25 Oct

8:50 a.m. - 2:25 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

4h 35m1 stop Washington, D.C. Dulles Intl

5:55 p.m. - 7:05 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 10mdirect

C$ 320United Airlines

Wed, 25 Nov - Wed, 25 Nov

9:35 p.m. - 9:19 a.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

10h 44m1 stop Newark

1:00 p.m. - 2:05 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 320United Airlines

Tue, 20 Oct - Wed, 21 Oct

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$ 340American Airlines

Sun, 8 Nov - Thu, 12 Nov

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

2h 01mdirect

3:15 p.m. - 4:35 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 20mdirect

C$ 340American Airlines

Wed, 18 Nov - Mon, 23 Nov

Cheap last-minute flights

Enter your travel dates to find the best prices.

7:25 a.m. - 10:07 a.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 42mdirect

7:35 p.m. - 8:41 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 06mdirect

C$ 371Air Canada

Tue, 22 Sep - Tue, 22 Sep

3:20 p.m. - 6:00 p.m.MDW Chicago Midway-YTZ Toronto Island

1h 40mdirect

1:45 p.m. - 2:35 p.m.YTZ Toronto Island-MDW Chicago Midway

1h 50mdirect

C$ 382Porter Airlines

Wed, 23 Sep - Tue, 29 Sep

7:25 a.m. - 10:07 a.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 42mdirect

7:35 p.m. - 8:41 p.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 06mdirect

C$ 385Air Canada

Wed, 23 Sep - Tue, 29 Sep

9:55 a.m. - 12:40 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 45mdirect

8:05 a.m. - 9:00 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 55mdirect

C$ 404Air Canada

Wed, 23 Sep - Wed, 30 Sep

11:42 a.m. - 2:32 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mdirect

1:15 p.m. - 2:20 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 527Porter Airlines

Tue, 22 Sep - Fri, 25 Sep

11:42 a.m. - 2:32 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mdirect

6:30 a.m. - 7:36 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 06mdirect

C$ 527Porter Airlines

Wed, 23 Sep - Sat, 26 Sep

10:43 a.m. - 1:42 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 59mdirect

10:15 a.m. - 11:21 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 06mdirect

C$ 612United Airlines

Sat, 26 Sep - Thu, 1 Oct

10:43 a.m. - 1:42 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 59mdirect

10:15 a.m. - 11:21 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 06mdirect

C$ 612United Airlines

Sat, 26 Sep - Sun, 4 Oct

11:42 a.m. - 2:32 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mdirect

3:13 p.m. - 4:18 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 763American Airlines

Tue, 22 Sep - Wed, 23 Sep

6:55 a.m. - 1:38 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

5h 43m1 stop Washington, D.C. Reagan-National

11:40 a.m. - 12:45 p.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 777American Airlines

Tue, 22 Sep - Wed, 23 Sep

Cheap direct flights

Enter your travel dates to find the best prices.

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

1h 40mdirect

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

2h 03mdirect

C$ 298Air Canada

Tue, 1 Dec - Wed, 9 Dec

6:20 p.m. - 9:06 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 46mdirect

10:35 a.m. - 11:40 a.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 298Porter Airlines

Sat, 7 Nov - Sat, 14 Nov

6:20 p.m. - 9:06 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 46mdirect

10:35 a.m. - 11:40 a.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 298Porter Airlines

Thu, 5 Nov - Fri, 13 Nov

12:20 p.m. - 3:06 p.m.ORD Chicago O'Hare Intl-YTZ Toronto Island

1h 46mdirect

10:35 a.m. - 11:40 a.m.YTZ Toronto Island-ORD Chicago O'Hare Intl

2h 05mdirect

C$ 298Porter Airlines

Mon, 2 Nov - Wed, 11 Nov

8:40 p.m. - 11:26 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 46mdirect

8:05 a.m. - 9:00 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 55mdirect

C$ 299Air Canada

Fri, 2 Oct - Sun, 4 Oct

2:15 p.m. - 5:01 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 46mdirect

8:05 a.m. - 9:00 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

1h 55mdirect

C$ 301Air Canada

Mon, 19 Oct - Tue, 20 Oct

9:20 p.m. - 11:59 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 39mdirect

7:00 a.m. - 8:00 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 00mdirect

C$ 340United Airlines

Fri, 16 Oct - Sat, 17 Oct

2:52 p.m. - 5:56 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

2h 04mdirect

10:15 a.m. - 11:21 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 06mdirect

C$ 340United Airlines

Wed, 14 Oct - Wed, 21 Oct

11:45 a.m. - 2:34 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 49mdirect

7:09 a.m. - 8:39 a.m.YYZ Toronto Pearson Intl-ORD Chicago O'Hare Intl

2h 30mdirect

C$ 340American Airlines

Thu, 3 Dec - Sun, 6 Dec

2:50 p.m. - 5:40 p.m.ORD Chicago O'Hare Intl-YYZ Toronto Pearson Intl

1h 50mdirect

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

2h 20mdirect

C$ 340American Airlines

Thu, 19 Nov - Tue, 24 Nov

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Air Canada flights from Chicago to Region of Ontario

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

Air Canada

10 Oct

ORD3:40 p.m.Chicago O'Hare Intl

5h 13m

1 stop

YYZ9:53 p.m.Toronto Pearson Intl

12 Oct

YYZ8:05 a.m.Toronto Pearson Intl

1h 55m

ORD9:00 a.m.Chicago O'Hare Intl

C$ 298

Air Canada

2 Oct

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

1h 46m

YYZ11:26 p.m.Toronto Pearson Intl

4 Oct

YYZ8:05 a.m.Toronto Pearson Intl

1h 55m

ORD9:00 a.m.Chicago O'Hare Intl

C$ 299

Air Canada

19 Oct

ORD2:15 p.m.Chicago O'Hare Intl

1h 46m

YYZ5:01 p.m.Toronto Pearson Intl

20 Oct

YYZ8:05 a.m.Toronto Pearson Intl

1h 55m

ORD9:00 a.m.Chicago O'Hare Intl

C$ 301

Lufthansa flights from Chicago to Region of Ontario

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

Lufthansa

1 Oct

ORD8:50 a.m.Chicago O'Hare Intl

1h 59m

YYZ11:49 a.m.Toronto Pearson Intl

4 Oct

YYZ7:00 a.m.Toronto Pearson Intl

2h 00m

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

C$ 327

Lufthansa

1 Oct

ORD5:00 a.m.Chicago O'Hare Intl

7h 47m

1 stop

YYZ1:47 p.m.Toronto Pearson Intl

4 Oct

YYZ11:00 a.m.Toronto Pearson Intl

2h 00m

ORD12:00 p.m.Chicago O'Hare Intl

C$ 366

Lufthansa

2 Oct

ORD3:00 p.m.Chicago O'Hare Intl

6h 23m

1 stop

YYZ10:23 p.m.Toronto Pearson Intl

4 Oct

YYZ11:00 a.m.Toronto Pearson Intl

2h 00m

ORD12:00 p.m.Chicago O'Hare Intl

C$ 368

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

ChicagoToronto

MDW Chicago Midway - YTZ Toronto Island

MDWYTZ

Chicago Midway

Sat 17/10

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

Nonstop1h 40m

Toronto Island

Wed 21/10

1:45 p.m.-2:35 p.m.

Nonstop1h 50m

C$ 298

ChicagoToronto

MDW Chicago Midway - YTZ Toronto Island

MDWYTZ

Chicago Midway

Tue 20/10

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

Nonstop1h 40m

Toronto Island

Sat 24/10

10:10 a.m.-11:00 a.m.

Nonstop1h 50m

C$ 298

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Tue 1/12

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

Nonstop1h 40m

Toronto Pearson Intl

Wed 9/12

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

Nonstop2h 03m

C$ 298

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Sat 10/10

3:40 p.m.-9:53 p.m.

1 stop5h 13m

Toronto Pearson Intl

Mon 12/10

8:05 a.m.-9:00 a.m.

Nonstop1h 55m

C$ 298

ChicagoToronto

MDW Chicago Midway - YTZ Toronto Island

MDWYTZ

Chicago Midway

Thu 22/10

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

Nonstop1h 40m

Toronto Island

Sat 24/10

1:45 p.m.-2:35 p.m.

Nonstop1h 50m

C$ 298

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Thu 22/10

11:05 a.m.-6:12 p.m.

1 stop6h 07m

Toronto Pearson Intl

Sun 25/10

8:20 a.m.-9:23 a.m.

Nonstop2h 03m

C$ 298

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Wed 25/11

8:50 a.m.-2:25 p.m.

1 stop4h 35m

Toronto Pearson Intl

Wed 25/11

5:55 p.m.-7:05 p.m.

Nonstop2h 10m

C$ 320

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Tue 20/10

9:35 p.m.-9:19 a.m.

1 stop10h 44m

Toronto Pearson Intl

Wed 21/10

1:00 p.m.-2:05 p.m.

Nonstop2h 05m

C$ 320

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Sun 8/11

8:45 p.m.-11:46 p.m.

Nonstop2h 01m

Toronto Pearson Intl

Thu 12/11

6:21 p.m.-7:41 p.m.

Nonstop2h 20m

C$ 340

ChicagoToronto

ORD Chicago O'Hare Intl - YYZ Toronto Pearson Intl

ORDYYZ

Chicago O'Hare Intl

Wed 18/11

8:45 p.m.-11:46 p.m.

Nonstop2h 01m

Toronto Pearson Intl

Mon 23/11

3:15 p.m.-4:35 p.m.

Nonstop2h 20m

C$ 340

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 Chicago 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 Chicago to Region of Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 403. If you are unable to visit Region of Ontario during the month of February, then departing from Chicago during the month June is also very affordable. Most momondo users find prices during this month for around C$ 425.

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

The cheapest day to depart from Chicago 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$ 374. The most expensive day to fly to Region of Ontario is Monday, with ticket prices averaging around C$ 483.

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 Chicago to Region of Ontario during this time can be as low as C$ 358. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 473 on average. Flights to Region of Ontario from Chicago at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Chicago to Ontario flight route?

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

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

You are more likely to see cheaper flights to Region of Ontario from Chicago when booking weeks ahead of your departure date. In general, you can expect to find flights to Region of Ontario for around C$ 471 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 Chicago for as low as C$ 380 on momondo.

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

There are 4 cabin classes available to choose from on Chicago 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 Chicago to Region of Ontario flights?

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

Cheap Chicago to Region of Ontario flight deals and tips

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

Best price found	C$ 133
Fastest flight time	1h 33m
Direct flights	Every day
Airports in Region of Ontario	125 airports

The best one-way flight to Region of Ontario from Chicago in the past 72 hours is C$ 133. The best round-trip flight deal from Chicago to Region of Ontario found on momondo in the last 72 hours is C$ 298.

The fastest flight from Chicago to Region of Ontario takes 1h 33m

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

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

Search flight deals

Frequently asked questions about flying from Chicago to Ontario

When did momondo last update prices for flights from Chicago to Ontario?
Prices for flights from Chicago to Ontario refresh daily.
How many operators does momondo search for flights from Chicago to Ontario?
The number of operators available for flights from Chicago to Ontario is 3 as of September 2026.
How old do you have to be to fly from Chicago to Ontario?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago to Ontario.
What documentation or ID do you need to fly to Ontario?
The necessary travel and health documents for your Ontario trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Chicago to Region of Ontario?
momondo data reveals that the most frequently booked plane model on the route from Chicago to Region of Ontario is De Havilland (Bombardier) DHC-8-400 Dash 8Q, representing 23.31% of all bookings. The subsequent popular models are Embraer 175 at 12.82%, Embraer 175 (Enhanced Winglets) at 9.79%, and Boeing 787-8 Dreamliner at 5.87%.

Best airlines flying from Chicago to Region of Ontario

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

Airline	Rating	Free Cancellation	Price
American Airlines	PriceFrom C$ 136	Free Cancellation	Rating 7.0 12,072 reviews	Search American Airlines flights
Air Canada	PriceFrom C$ 288	Free Cancellation	Rating 7.1 11,658 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 350	Free Cancellation	Rating 7.4 10,220 reviews	Search United Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Chicago to Ontario for you.

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

Yes. momondo allows you to filter the results for Chicago to Ontario flights to just show those with flexible booking policies.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Ontario from Chicago.

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

Yes. momondo can track prices for Chicago 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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Popular Cities in Ontario

Flights to Torontofrom C$ 152

Flights to Vancouverfrom C$ 105

Flights to Calgaryfrom C$ 110

Flights to Montrealfrom C$ 220

Flights to Halifaxfrom C$ 144

Flights to Winnipegfrom C$ 165

Flights to Ottawafrom C$ 172

Flights to Kelownafrom C$ 120

Flights to Saskatoonfrom C$ 145

Flights to St. John'sfrom C$ 197

Flights to Reginafrom C$ 193

Flights to Québec Cityfrom C$ 313

Cheap flights from Chicago 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 Chicago to Ontario departing on 14/10. 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 Chicago 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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Air Canada flights from Chicago to Region of Ontario

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

Lufthansa flights from Chicago to Region of Ontario

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

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

See travel insights to Ontario from

How to get the cheapest flight ticket from Chicago 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 Chicago to Ontario flight route?

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

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

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

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

Which airlines fly to Region of Ontario?

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

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

Cheap Chicago 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 Chicago to Ontario

Best airlines flying from Chicago to Region of Ontario

Compare and see reviews for airlines that fly from Chicago 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

Chicago 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

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