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

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

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

On average, it takes 1h 52m to fly from Region of Ontario to Chicago O'Hare Intl Airport if you fly out of Toronto (the most popular airport in Region of Ontario) and into Chicago O'Hare Intl Airport (the most popular airport in Chicago O'Hare Intl Airport). If you’re flying out of Ottawa and into Chicago O'Hare Intl Airport, then the flight time is around 2h 20m.

What 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 44% of people opting to fly with this airline when traveling to Chicago O'Hare Intl Airport. Keep in mind that there are 4 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 were last updated today.

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

As of May 2026, there are 4 operators available to choose from for flights from Ontario to Chicago O'Hare Intl Airport.

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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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.

$125 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?

The number of flights available between Region of Ontario and Chicago O'Hare Intl Airport is 687 per week as of May 2026. The most frequent departure day is Fri, with 16% of weekly flights leaving on this day.

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

98 flights are operational daily from Region of Ontario to Chicago O'Hare Intl Airport as of May 2026. The most popular departure time for this route is 1:00PM, with 43% of flights per day taking off at noon.

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Find the cheapest flights from Ontario to Chicago

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Cheap round-trip flights

Enter your travel dates to find the best prices.

8:40 pm - 9:35 pm

YTZ

ORD

1h 55mnonstop

11:45 am - 2:25 pm

ORD

YTZ

1h 40mnonstop

$203Porter Airlines

dom., sep. 6 - dom., sep. 13

8:40 pm - 9:35 pm

YTZ

ORD

1h 55mnonstop

7:00 am - 9:40 am

ORD

YTZ

1h 40mnonstop

$204Porter Airlines

dom., sep. 13 - sáb., sep. 19

4:00 pm - 4:59 pm

YYZ

ORD

1h 59mnonstop

9:55 am - 12:35 pm

ORD

YYZ

1h 40mnonstop

$206Air Canada

vie., may. 22 - mar., may. 26

7:20 pm - 8:16 pm

YTZ

ORD

1h 56mnonstop

7:25 am - 10:06 am

ORD

YTZ

1h 41mnonstop

$206Air Canada

jue., jun. 25 - lun., jun. 29

1:55 pm - 2:55 pm

YYZ

ORD

2h 00mnonstop

8:35 pm - 11:18 pm

ORD

YYZ

1h 43mnonstop

$207Air Canada

vie., may. 22 - sáb., may. 30

8:30 am - 2:53 pm

YTZ

ORD

7h 23m

1 stop

7:25 am - 10:06 am

ORD

YTZ

1h 41mnonstop

$207Air Canada

sáb., may. 23 - mié., jun. 3

10:15 am - 11:21 am

YYZ

ORD

2h 06mnonstop

9:20 pm - 11:59 pm

ORD

YYZ

1h 39mnonstop

$208United Airlines

vie., may. 22 - lun., may. 25

8:50 am - 9:50 am

YYZ

ORD

2h 00mnonstop

7:09 am - 9:54 am

ORD

YYZ

1h 45mnonstop

$209United Airlines

jue., may. 28 - jue., jun. 4

9:00 pm - 10:05 pm

YYZ

ORD

2h 05mnonstop

9:15 pm - 11:59 pm

ORD

YYZ

1h 44mnonstop

$212Lufthansa

jue., may. 28 - lun., jun. 1

12:25 pm - 1:22 pm

YYZ

ORD

1h 57mnonstop

9:50 am - 12:35 pm

ORD

YYZ

1h 45mnonstop

$217GOL

sáb., ago. 22 - dom., ago. 23

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

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

Porter Airlines

Sep 6

YTZ8:40 pmToronto Island

1h 55m

ORD9:35 pmChicago O'Hare Intl

Sep 13

ORD11:45 amChicago O'Hare Intl

1h 40m

YTZ2:25 pmToronto Island

$203

Porter Airlines

Sep 13

YTZ8:40 pmToronto Island

1h 55m

ORD9:35 pmChicago O'Hare Intl

Sep 19

ORD7:00 amChicago O'Hare Intl

1h 40m

YTZ9:40 amToronto Island

$204

Porter Airlines

Sep 8

YTZ8:40 pmToronto Island

1h 55m

ORD9:35 pmChicago O'Hare Intl

Sep 10

ORD7:00 amChicago O'Hare Intl

1h 40m

YTZ9:40 amToronto Island

$209

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

May 22

YYZ4:00 pmToronto Pearson Intl

1h 59m

ORD4:59 pmChicago O'Hare Intl

May 26

ORD9:55 amChicago O'Hare Intl

1h 40m

YYZ12:35 pmToronto Pearson Intl

$206

Air Canada

May 22

YYZ1:55 pmToronto Pearson Intl

2h 00m

ORD2:55 pmChicago O'Hare Intl

May 30

ORD8:35 pmChicago O'Hare Intl

1h 43m

YYZ11:18 pmToronto Pearson Intl

$207

Air Canada

Jun 11

YTZ12:15 pmToronto Island

1h 55m

ORD1:10 pmChicago O'Hare Intl

Jun 18

ORD7:25 amChicago O'Hare Intl

1h 41m

YTZ10:06 amToronto Island

$208

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

Quickest round-trip

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

dom. 9/6

8:40 pm-9:35 pm

Nonstop1h 55m

Chicago O'Hare Intl

dom. 9/13

11:45 am-2:25 pm

Nonstop1h 40m

$203

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

dom. 9/13

8:40 pm-9:35 pm

Nonstop1h 55m

Chicago O'Hare Intl

sáb. 9/19

7:00 am-9:40 am

Nonstop1h 40m

$204

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

vie. 5/22

4:00 pm-4:59 pm

Nonstop1h 59m

Chicago O'Hare Intl

mar. 5/26

9:55 am-12:35 pm

Nonstop1h 40m

$206

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

jue. 6/25

7:20 pm-8:16 pm

Nonstop1h 56m

Chicago O'Hare Intl

lun. 6/29

7:25 am-10:06 am

Nonstop1h 41m

$206

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

vie. 5/22

1:55 pm-2:55 pm

Nonstop2h 00m

Chicago O'Hare Intl

sáb. 5/30

8:35 pm-11:18 pm

Nonstop1h 43m

$207

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

sáb. 5/23

8:30 am-2:53 pm

1 stop7h 23m

Chicago O'Hare Intl

mié. 6/3

7:25 am-10:06 am

Nonstop1h 41m

$207

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

vie. 5/22

10:15 am-11:21 am

Nonstop2h 06m

Chicago O'Hare Intl

lun. 5/25

9:20 pm-11:59 pm

Nonstop1h 39m

$208

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

jue. 5/28

8:50 am-9:50 am

Nonstop2h 00m

Chicago O'Hare Intl

jue. 6/4

7:09 am-9:54 am

Nonstop1h 45m

$209

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

jue. 5/28

9:00 pm-10:05 pm

Nonstop2h 05m

Chicago O'Hare Intl

lun. 6/1

9:15 pm-11:59 pm

Nonstop1h 44m

$212

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

sáb. 8/22

12:25 pm-1:22 pm

Nonstop1h 57m

Chicago O'Hare Intl

dom. 8/23

9:50 am-12:35 pm

Nonstop1h 45m

$217

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?

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 $60.

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 $467. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Region of Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $740.

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

Flying to Chicago O'Hare Intl Airport from Region of Ontario in the evening is the least expensive time of day to depart. momondo users have found prices as low as $405 when looking at flights departing in the evening. Try not to purchase tickets in the afternoon because they tend to be around $713. Of course, these prices can vary depending on the time of year and what airport you fly to.

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 $294 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 $195 on momondo.

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	$102
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 $102. 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 $183.

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 were last updated today.
How many operators does momondo search for flights from Ontario to Chicago O'Hare Intl Airport?
As of May 2026, there are 4 operators available to choose from for flights from Ontario to Chicago O'Hare Intl Airport.
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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 Boeing 737 MAX 8, making up 11.39% of the total bookings. Other popular models include Embraer 175 (Enhanced Winglets) with 11.39%, De Havilland (Bombardier) DHC-8-400 Dash 8Q with 11.25%, and Embraer 195 E2 with 8.87%.

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
Air Canada	PriceFrom $146	Free Cancellation	Rating 7.1 10,990 reviews	Search Air Canada flights
United Airlines	PriceFrom $165	Free Cancellation	Rating 7.4 9,681 reviews	Search United Airlines flights
American Airlines	PriceFrom $189	Free Cancellation	Rating 7.1 11,671 reviews	Search American Airlines flights
Porter Airlines	PriceFrom $192	Free Cancellation	Rating 8.0 435 reviews	Search Porter Airlines flights

Lake Geneva

Schaumburg

South Haven

Rockford

Merrillville

Gurnee

Rosemont

Naperville

New Buffalo

Orland Park

Oak Brook

Kenosha

Joliet

Aurora

Janesville

Racine

Hammond

Tinley Park

Elgin

Evanston

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Chicago. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Ontario to Chicago on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to Chicago.

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

Price alerts on flights to Chicago from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Ontario to Chicago from $125

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 6/6. 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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Porter Airlines flights from Region of Ontario to Chicago O'Hare Intl Airport

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

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

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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.

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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?

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?

What 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

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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

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