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 19m on average. On the other hand, flying from Toronto to Chicago O'Hare Intl Airport takes 5h 06m 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 American Airlines are the most popular carriers operating from Ontario to Chicago O'Hare Intl

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 53% 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.

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 June 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$ 189 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 June 2026, 778 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 Sun, with 15% of weekly flights taking off on this day.

Discover deals from 900+ travel sites with momondo.

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.

6:55 p.m. - 7:52 p.m.

YYZ

ORD

1h 57mdirect

8:40 p.m. - 11:25 p.m.

ORD

YYZ

1h 45mdirect

C$ 288Air Canada

Fri, 4 Sep - Sun, 6 Sep

7:25 p.m. - 8:29 p.m.

YTZ

ORD

2h 04mdirect

7:25 a.m. - 10:07 a.m.

ORD

YTZ

1h 42mdirect

C$ 288Air Canada

Sun, 26 Jul - Sun, 2 Aug

11:00 a.m. - 12:00 p.m.

YYZ

ORD

2h 00mdirect

7:09 a.m. - 9:54 a.m.

ORD

YYZ

1h 45mdirect

C$ 290United Airlines

Fri, 2 Oct - Mon, 5 Oct

2:00 p.m. - 2:55 p.m.

YYZ

ORD

1h 55mdirect

3:45 p.m. - 6:31 p.m.

ORD

YYZ

1h 46mdirect

C$ 291Air Canada

Thu, 25 Jun - Sun, 28 Jun

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

YTZ

ORD

1h 55mdirect

12:45 p.m. - 3:27 p.m.

ORD

YTZ

1h 42mdirect

C$ 302Porter Airlines

Thu, 1 Oct - Sat, 31 Oct

8:40 a.m. - 1:22 p.m.

YUL

ORD

5h 42m

2 stops

3:20 p.m. - 8:10 p.m.

ORD

YUL

3h 50m

1 stop

C$ 407Multiple Airlines

Fri, 4 Sep - Tue, 8 Sep

9:45 a.m. - 11:21 a.m.

YUL

ORD

2h 36mdirect

8:45 a.m. - 2:40 p.m.

ORD

YUL

4h 55m

1 stop

C$ 410United Airlines

Thu, 3 Sep - Sun, 6 Sep

6:00 a.m. - 1:08 p.m.

YUL

ORD

8h 08m

1 stop

7:00 a.m. - 4:20 p.m.

ORD

YUL

8h 20m

1 stop

C$ 411Delta

Fri, 4 Sep - Mon, 7 Sep

6:55 a.m. - 2:35 p.m.

YOW

ORD

8h 40m

1 stop

11:45 a.m. - 8:05 a.m.

ORD

YOW

19h 20m

1 stop

C$ 551Multiple Airlines

Thu, 24 Sep - Sun, 27 Sep

5:55 p.m. - 9:35 p.m.

YOW

ORD

4h 40m

1 stop

3:20 p.m. - 8:04 p.m.

ORD

YOW

3h 44m

1 stop

C$ 592Porter Airlines

Thu, 15 Oct - Sun, 18 Oct

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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

Air Canada

4 Sep

YYZ6:55 p.m.Toronto Pearson Intl

1h 57m

ORD7:52 p.m.Chicago O'Hare Intl

6 Sep

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

1h 45m

YYZ11:25 p.m.Toronto Pearson Intl

C$ 288

Air Canada

25 Jun

YYZ2:00 p.m.Toronto Pearson Intl

1h 55m

ORD2:55 p.m.Chicago O'Hare Intl

28 Jun

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

1h 46m

YYZ6:31 p.m.Toronto Pearson Intl

C$ 291

Air Canada

15 Jul

YTZ7:25 p.m.Toronto Island

2h 04m

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

22 Jul

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

1h 42m

YTZ4:42 p.m.Toronto Island

C$ 292

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

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

United Airlines

9 Jul

YYZ10:15 a.m.Toronto Pearson Intl

2h 06m

ORD11:21 a.m.Chicago O'Hare Intl

15 Aug

ORD2:52 p.m.Chicago O'Hare Intl

2h 04m

YYZ5:56 p.m.Toronto Pearson Intl

C$ 308

United Airlines

2 Oct

YYZ9:44 a.m.Toronto Pearson Intl

8h 36m

1 stop

ORD5:20 p.m.Chicago O'Hare Intl

5 Oct

ORD2:52 p.m.Chicago O'Hare Intl

2h 04m

YYZ5:56 p.m.Toronto Pearson Intl

C$ 311

United Airlines

18 Jul

YYZ8:45 a.m.Toronto Pearson Intl

2h 00m

ORD9:45 a.m.Chicago O'Hare Intl

18 Jul

ORD9:40 p.m.Chicago O'Hare Intl

11h 24m

1 stop

YYZ10:04 a.m.Toronto Pearson Intl

C$ 320

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

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 4/9

6:55 p.m.-7:52 p.m.

Nonstop1h 57m

Chicago O'Hare Intl

Sun 6/9

8:40 p.m.-11:25 p.m.

Nonstop1h 45m

C$ 288

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Sun 26/7

7:25 p.m.-8:29 p.m.

Nonstop2h 04m

Chicago O'Hare Intl

Sun 2/8

7:25 a.m.-10:07 a.m.

Nonstop1h 42m

C$ 288

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Fri 2/10

11:00 a.m.-12:00 p.m.

Nonstop2h 00m

Chicago O'Hare Intl

Mon 5/10

7:09 a.m.-9:54 a.m.

Nonstop1h 45m

C$ 290

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 25/6

2:00 p.m.-2:55 p.m.

Nonstop1h 55m

Chicago O'Hare Intl

Sun 28/6

3:45 p.m.-6:31 p.m.

Nonstop1h 46m

C$ 291

Quickest round-trip

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Thu 1/10

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

Nonstop1h 55m

Chicago O'Hare Intl

Sat 31/10

12:45 p.m.-3:27 p.m.

Nonstop1h 42m

C$ 302

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

8:40 a.m.-1:22 p.m.

2 stops5h 42m

Chicago O'Hare Intl

Tue 8/9

3:20 p.m.-8:10 p.m.

1 stop3h 50m

C$ 407

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Thu 3/9

9:45 a.m.-11:21 a.m.

Nonstop2h 36m

Chicago O'Hare Intl

Sun 6/9

8:45 a.m.-2:40 p.m.

1 stop4h 55m

C$ 410

MontrealChicago

YUL - ORD

YULORD

Montreal Pierre Elliott Trudeau Intl

Fri 4/9

6:00 a.m.-1:08 p.m.

1 stop8h 08m

Chicago O'Hare Intl

Mon 7/9

7:00 a.m.-4:20 p.m.

1 stop8h 20m

C$ 411

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 24/9

6:55 a.m.-2:35 p.m.

1 stop8h 40m

Chicago O'Hare Intl

Sun 27/9

11:45 a.m.-8:05 a.m.

1 stop19h 20m

C$ 551

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Thu 15/10

5:55 p.m.-9:35 p.m.

1 stop4h 40m

Chicago O'Hare Intl

Sun 18/10

3:20 p.m.-8:04 p.m.

1 stop3h 44m

C$ 592

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, January 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$ 71. The month of September is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from Region of Ontario averaging around C$ 84.

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$ 719. 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$ 1,119.

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$ 773. 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$ 1,156 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 Island to Chicago O'Hare Intl for the best Ontario - Chicago O'Hare Intl flight prices

How far in advance should I book a flight from Ontario 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$ 424 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$ 245 on momondo.

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

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

You could potentially save up to 19% on your flight if you consider stops on a Region of Ontario to Chicago O'Hare Intl Airport flight.

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$ 205
Fastest flight time	1h 50m
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$ 205. 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$ 369.

The fastest flight from Region of Ontario to Chicago O'Hare Intl Airport takes 1h 50m

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

Search flight deals

Frequently asked questions about flying from Ontario to Chicago O'Hare Intl Airport

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 June 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 De Havilland (Bombardier) DHC-8-400 Dash 8Q, making up 13.42% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 10.48%, Boeing 737 MAX 8 with 8.00%, and Embraer 195 E2 with 7.51%.

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$ 225	Free Cancellation	Rating 8.0 438 reviews	Search Porter Airlines flights
American Airlines	PriceFrom C$ 253	Free Cancellation	Rating 7.1 11,654 reviews	Search American Airlines flights
Air Canada	PriceFrom C$ 253	Free Cancellation	Rating 7.1 11,182 reviews	Search Air Canada flights
United Airlines	PriceFrom C$ 269	Free Cancellation	Rating 7.4 9,820 reviews	Search United Airlines flights
WestJet	PriceFrom C$ 373	Free Cancellation	Rating 7.2 3,361 reviews	Search WestJet flights

Schaumburg

Glenview

Waukegan

Rosemont

Des Plaines

Merrillville

Kenosha

Northbrook

Tinley Park

Evanston

Downers Grove

Great Lakes

Wheeling

Hammond

Harvey

Naperville

Munster

Harvard

Hoffman Estates

Elmhurst

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$ 189

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 2/7. 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

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

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

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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 from Ontario to Chicago O'Hare Intl Airport?

What cabin class options are available on Region of Ontario to Chicago O'Hare Intl Airport 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

Frequently asked questions about flying from Ontario to Chicago O'Hare Intl Airport

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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An easier way to manage your Chicago O'Hare Intl Airport trip

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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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