Which airlines fly to Chicago O'Hare Intl Airport?

Air Canada, United Airlines and American Airlines are the top three most popular airlines that fly to Chicago O'Hare Intl Airport from Region of Ontario according to our data. Air Canada is the first choice among our users, with 62% of people opting to fly with this airline when travelling to Chicago O'Hare Intl Airport. Keep in mind that there are 5 different airlines that fly to Chicago O'Hare Intl Airport on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Chicago O'Hare Intl Airport?

Flight times vary depending on what airport in Region of Ontario you fly out of and what airport in Chicago O'Hare Intl Airport you fly into. For example, flying from Ottawa to Chicago O'Hare Intl Airport takes 2h 20m on average. On the other hand, flying from Toronto to Chicago O'Hare Intl Airport takes 8h 16m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo to see if there are any available for your route.

What is the cheapest airline that flies from Ontario to Chicago O'Hare Intl?

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

When did momondo last update prices for flights from Ontario to Chicago O'Hare Intl Airport?

Prices for flights from Ontario to Chicago O'Hare Intl Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Ontario to Chicago O'Hare Intl Airport?

There are 5 operators available for flights from Ontario to Chicago O'Hare Intl Airport as of March 2026.

How old do you have to be to fly from Ontario to Chicago O'Hare Intl Airport?

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 Ontario to Chicago O'Hare Intl Airport.

What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

C$ 160 Cheap Flights from Region of Ontario to Chicago O'Hare Intl Airport in 2026

Q: How many flights depart from Region of Ontario to Chicago O'Hare Intl Airport on average per week?

As of March 2026, 648 flights take off from Region of Ontario and land in Chicago O'Hare Intl Airport each week. The most common flight departure day for this route is Fri, with 15% of weekly flights taking off on this day.

Q: How many flights depart from Region of Ontario to Chicago O'Hare Intl Airport on average per day?

As of March 2026, there are 92 flights per day flying from Region of Ontario to Chicago O'Hare Intl Airport. The most common time of day flights depart is 6:00a.m., with 49% of flights taking off at noon.

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Find the cheapest flights from Ontario to Chicago

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:30 p.m. - 8:16 p.m.

YUL

ORD

4h 46m

1 stop

7:25 a.m. - 1:45 p.m.

ORD

YUL

5h 20m

1 stop

C$ 260Air Canada

Mon, 1 Jun - Sun, 7 Jun

9:15 a.m. - 1:05 p.m.

YUL

ORD

4h 50m

1 stop

7:55 a.m. - 1:21 p.m.

ORD

YUL

4h 26m

1 stop

C$ 261Air Canada

Thu, 9 Apr - Sun, 12 Apr

12:00 p.m. - 5:50 p.m.

YUL

ORD

6h 50m

1 stop

3:45 p.m. - 6:56 p.m.

ORD

YUL

2h 11mdirect

C$ 263Air Canada

Thu, 9 Apr - Sun, 12 Apr

6:10 a.m. - 8:00 a.m.

YUL

ORD

2h 50mdirect

7:13 a.m. - 10:40 a.m.

ORD

YUL

2h 27mdirect

C$ 274United Airlines

Thu, 9 Apr - Sun, 12 Apr

1:40 p.m. - 2:35 p.m.

YTZ

ORD

1h 55mdirect

7:00 a.m. - 9:40 a.m.

ORD

YTZ

1h 40mdirect

C$ 305Porter Airlines

Wed, 9 Sep - Sat, 12 Sep

8:50 a.m. - 9:50 a.m.

YYZ

ORD

2h 00mdirect

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

ORD

YYZ

1h 39mdirect

C$ 307United Airlines

Thu, 2 Apr - Sun, 5 Apr

6:15 a.m. - 7:25 a.m.

YYZ

ORD

2h 10mdirect

8:06 a.m. - 10:53 a.m.

ORD

YYZ

1h 47mdirect

C$ 309American Airlines

Thu, 16 Apr - Thu, 23 Apr

10:05 a.m. - 11:00 a.m.

YTZ

ORD

1h 55mdirect

7:00 a.m. - 9:40 a.m.

ORD

YTZ

1h 40mdirect

C$ 342Porter Airlines

Mon, 7 Sep - Mon, 14 Sep

6:15 p.m. - 12:22 a.m.

YTZ

ORD

7h 07m

1 stop

12:47 p.m. - 7:50 p.m.

ORD

YTZ

6h 03m

1 stop

C$ 387Multiple Airlines

Fri, 10 Apr - Fri, 17 Apr

6:15 p.m. - 12:22 a.m.

YTZ

ORD

7h 07m

1 stop

6:01 p.m. - 8:03 p.m.

ORD

YTZ

25h 02m

2 stops

C$ 391Multiple Airlines

Tue, 7 Apr - Tue, 14 Apr

Air Canada flights from Region of Ontario to Chicago O'Hare Intl Airport

Our best Air Canada deals on Region of Ontario to Chicago O'Hare Intl Airport flight tickets

Air Canada

1 Jun

YUL4:30 p.m.Montreal Pierre Elliott Trudeau Intl

4h 46m

1 stop

ORD8:16 p.m.Chicago O'Hare Intl

7 Jun

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

5h 20m

1 stop

YUL1:45 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 260

Air Canada

9 Apr

YUL9:15 a.m.Montreal Pierre Elliott Trudeau Intl

4h 50m

1 stop

ORD1:05 p.m.Chicago O'Hare Intl

12 Apr

ORD7:55 a.m.Chicago O'Hare Intl

4h 26m

1 stop

YUL1:21 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 261

Air Canada

9 Apr

YUL12:00 p.m.Montreal Pierre Elliott Trudeau Intl

6h 50m

1 stop

ORD5:50 p.m.Chicago O'Hare Intl

12 Apr

ORD3:45 p.m.Chicago O'Hare Intl

2h 11m

YUL6:56 p.m.Montreal Pierre Elliott Trudeau Intl

C$ 263

American Airlines flights from Region of Ontario to Chicago O'Hare Intl Airport

Our best American Airlines deals on Region of Ontario to Chicago O'Hare Intl Airport flight tickets

American Airlines

16 Apr

YYZ6:15 a.m.Toronto Pearson Intl

2h 10m

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

23 Apr

ORD8:06 a.m.Chicago O'Hare Intl

1h 47m

YYZ10:53 a.m.Toronto Pearson Intl

C$ 309

American Airlines

1 Apr

YYZ1:10 p.m.Toronto Pearson Intl

2h 00m

ORD2:10 p.m.Chicago O'Hare Intl

3 Apr

ORD4:48 p.m.Chicago O'Hare Intl

5h 07m

1 stop

YYZ10:55 p.m.Toronto Pearson Intl

C$ 323

American Airlines

16 Apr

YYZ6:06 p.m.Toronto Pearson Intl

6h 28m

1 stop

ORD11:34 p.m.Chicago O'Hare Intl

23 Apr

ORD8:06 a.m.Chicago O'Hare Intl

1h 47m

YYZ10:53 a.m.Toronto Pearson Intl

C$ 330

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Chicago O'Hare Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Mon 1/6

4:30 p.m.-8:16 p.m.

1 stop4h 46m

Chicago O'Hare Intl

Sun 7/6

7:25 a.m.-1:45 p.m.

1 stop5h 20m

C$ 260

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 9/4

9:15 a.m.-1:05 p.m.

1 stop4h 50m

Chicago O'Hare Intl

Sun 12/4

7:55 a.m.-1:21 p.m.

1 stop4h 26m

C$ 261

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 9/4

12:00 p.m.-5:50 p.m.

1 stop6h 50m

Chicago O'Hare Intl

Sun 12/4

3:45 p.m.-6:56 p.m.

Nonstop2h 11m

C$ 263

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 9/4

6:10 a.m.-8:00 a.m.

Nonstop2h 50m

Chicago O'Hare Intl

Sun 12/4

7:13 a.m.-10:40 a.m.

Nonstop2h 27m

C$ 274

Quickest round-trip

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Wed 9/9

1:40 p.m.-2:35 p.m.

Nonstop1h 55m

Chicago O'Hare Intl

Sat 12/9

7:00 a.m.-9:40 a.m.

Nonstop1h 40m

C$ 305

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 2/4

8:50 a.m.-9:50 a.m.

Nonstop2h 00m

Chicago O'Hare Intl

Sun 5/4

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

Nonstop1h 39m

C$ 307

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 16/4

6:15 a.m.-7:25 a.m.

Nonstop2h 10m

Chicago O'Hare Intl

Thu 23/4

8:06 a.m.-10:53 a.m.

Nonstop1h 47m

C$ 309

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Mon 7/9

10:05 a.m.-11:00 a.m.

Nonstop1h 55m

Chicago O'Hare Intl

Mon 14/9

7:00 a.m.-9:40 a.m.

Nonstop1h 40m

C$ 342

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Fri 10/4

6:15 p.m.-12:22 a.m.

1 stop7h 07m

Chicago O'Hare Intl

Fri 17/4

12:47 p.m.-7:50 p.m.

1 stop6h 03m

C$ 387

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Tue 7/4

6:15 p.m.-12:22 a.m.

1 stop7h 07m

Chicago O'Hare Intl

Tue 14/4

6:01 p.m.-8:03 p.m.

2 stops25h 02m

C$ 391

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 Region of Ontario to Chicago O'Hare Intl Airport

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 Chicago O'Hare Intl Airport?

In general, November is the cheapest month to fly from Region of Ontario to Chicago O'Hare Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 296. The month of May is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Region of Ontario averaging around C$ 334.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Friday when prices can be found for as low as C$ 676. This is often the case because there is less demand to fly during this day of the week. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from Region of Ontario to Chicago O'Hare Intl Airport for around C$ 1,057.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

In the evening is the cheapest time of day to fly from Region of Ontario to Chicago O'Hare Intl Airport when you can find flight prices for as low as C$ 671. Flying to Chicago O'Hare Intl Airport in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,125 on average. Flights to Chicago O'Hare Intl Airport from Region of Ontario at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Ontario to Chicago O'Hare Intl flight route?

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around C$ 391 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from Region of Ontario for as low as C$ 267 on momondo.

What cabin class options are available on Ontario to Chicago O'Hare Intl flights?

There are 4 cabin classes available to choose from on Ontario to Chicago O'Hare Intl 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 Region of Ontario to Chicago O'Hare Intl Airport flights?

No. A direct flight is the cheapest option for a flight between Region of Ontario to Chicago O'Hare Intl Airport.

Cheap Region of Ontario to Chicago O'Hare Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Chicago O'Hare Intl Airport

Best price found	C$ 307
Fastest flight time	1h 55m
Direct flights	Every day

The best one-way flight to Chicago O'Hare Intl Airport from Region of Ontario in the past 72 hours is C$ 307. The best round-trip flight deal from Region of Ontario to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is C$ 497.

The fastest flight from Region of Ontario to Chicago O'Hare Intl Airport takes 1h 55m

Direct flights go from Region of Ontario to Chicago O'Hare Intl Airport every day.

Search flight deals

When did momondo last update prices for flights from Ontario to Chicago O'Hare Intl Airport?
Prices for flights from Ontario to Chicago O'Hare Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Ontario to Chicago O'Hare Intl Airport?
There are 5 operators available for flights from Ontario to Chicago O'Hare Intl Airport as of March 2026.
How old do you have to be to fly from Ontario to Chicago O'Hare Intl Airport?
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 Ontario to Chicago O'Hare Intl Airport.
What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?
The travel and health documents you'll need for your trip to Chicago O'Hare Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Chicago O'Hare Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Region of Ontario to Chicago O'Hare Intl Airport?
Based on momondo bookings for flights between Region of Ontario and Chicago O'Hare Intl Airport, the leading plane model is Embraer 175 (Enhanced Winglets), making up 13.25% of the total bookings. Other popular models include De Havilland (Bombardier) DHC-8-400 Dash 8Q with 11.36%, Embraer 195 E2 with 11.23%, and Embraer 175 with 9.38%.

Best airlines flying from Region of Ontario to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Region of Ontario to Chicago O'Hare Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Porter Airlines	PriceFrom C$ 220	Free Cancellation	Rating 8.0 423 reviews	Search Porter Airlines flights
American Airlines	PriceFrom C$ 222	Free Cancellation	Rating 7.1 11,464 reviews	Search American Airlines flights
Air Canada	PriceFrom C$ 244	Free Cancellation	Rating 7.1 10,800 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 259	Free Cancellation	Rating 7.4 9,422 reviews	Search United Airlines flights
WestJet	PriceFrom C$ 365	Free Cancellation	Rating 7.2 3,295 reviews	Search WestJet flights

Schaumburg

Rosemont

Hoffman Estates

Merrillville

Northbrook

Tinley Park

Munster

Skokie

Great Lakes

Wheeling

Hammond

Harvey

Naperville

Glenview

Des Plaines

Elmhurst

DeKalb

Harvard

Oak Brook

Kankakee

Why use momondo?

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

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 Ontario to Chicago for you.

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

Flights from Ontario to Chicago with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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 Chicago from Ontario.

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

If you are not ready to book a flight from Ontario to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.

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Cheap flights from Ontario to Chicago from C$ 160

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Chicago departing on 1/4. 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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Air Canada flights from Region of Ontario to Chicago O'Hare Intl Airport

Our best Air Canada deals on Region of Ontario to Chicago O'Hare Intl Airport flight tickets

American Airlines flights from Region of Ontario to Chicago O'Hare Intl Airport

Our best American Airlines deals on Region of Ontario to Chicago O'Hare Intl Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Ontario to Chicago O'Hare Intl Airport that are best for you.

See travel insights to Chicago from

How to get the cheapest flight ticket from Region of Ontario to Chicago O'Hare Intl Airport

What is the cheapest month to fly to Chicago O'Hare Intl Airport?

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

What is the cheapest Ontario to Chicago O'Hare Intl flight route?

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

What cabin class options are available on Ontario to Chicago O'Hare Intl flights?

Can stopping save me money on Region of Ontario to Chicago O'Hare Intl Airport flights?

What is the cheapest airline that flies from Ontario to Chicago O'Hare Intl?

Which airlines fly to Chicago O'Hare Intl Airport?

How many flights depart from Region of Ontario to Chicago O'Hare Intl Airport on average per day?

How many flights depart from Region of Ontario to Chicago O'Hare Intl Airport on average per week?

How long does it take to fly to Chicago O'Hare Intl Airport?

Cheap Region of Ontario to Chicago O'Hare Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Chicago O'Hare Intl Airport

Best price found

Fastest flight time

Direct flights

Best airlines flying from Region of Ontario to Chicago O'Hare Intl Airport

Compare and see reviews for airlines that fly from Region of Ontario to Chicago O'Hare Intl Airport with momondo

Travelling to a place near Chicago?

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List of cabin classes available on flights landing in Chicago. Availability may vary depending on flight origin and airline.

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