How does KAYAK find such low prices on flights from Ontario to Chicago?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Chicago. Visit our flight page for the latest deals!>/a>

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Chicago?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Ontario is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Ontario to Chicago?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to Ontario with another airline. Visit our flight page for the latest deals!>/a>

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Chicago?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$113 CHEAP FLIGHTS from Ontario to Chicago (ORD)

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

...and more

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41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$173

Typical prices: $250-$371

Air Canada

Thu 1/29Sun 2/1

YYZ - ORD • Non-stop

Cheapest one-way

$113

Typical prices: $278-$382

Multiple Airlines

Sun 1/11

YOW - ORD • 3 stops

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Chicago!

Flight Deals

Cheap Flights from Ontario to Chicago

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Chicago that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Ontario to Chicago

Thu, Jan 29 - Sun, Feb 1

2:15 pm - 3:10 pm

YYZ

ORD

1h 55mnonstop

2:00 pm - 4:39 pm

ORD

YYZ

1h 39mnonstop

$173Air Canada

Thu, Jan 29 - Sun, Feb 1

4:50 pm - 5:48 pm

YYZ

ORD

1h 58mnonstop

8:00 am - 10:40 am

ORD

YYZ

1h 40mnonstop

$174Air Canada

Thu, Jan 29 - Sun, Feb 1

8:15 am - 9:13 am

YYZ

ORD

1h 58mnonstop

8:00 am - 10:40 am

ORD

YYZ

1h 40mnonstop

$175Air Canada

Thu, Feb 5 - Thu, Feb 12

10:30 am - 5:42 pm

YYZ

ORD

8h 12m1 stop

6:40 am - 5:28 pm

ORD

YYZ

9h 48m1 stop

$184American Airlines

Fri, Feb 13 - Mon, Feb 16

9:00 pm - 10:04 pm

YYZ

ORD

2h 04mnonstop

9:14 pm - 11:59 pm

ORD

YYZ

1h 45mnonstop

$186United Airlines

Thu, Feb 5 - Sun, Feb 8

3:50 pm - 5:50 pm

YUL

ORD

3h 00mnonstop

6:05 am - 1:45 pm

ORD

YUL

6h 40m1 stop

$192American Airlines

Sun, Feb 1 - Tue, Feb 10

6:00 am - 9:41 am

YUL

ORD

4h 41m1 stop

2:50 pm - 11:50 pm

ORD

YUL

8h 00m1 stop

$205Delta

Wed, Jan 7 - Mon, Jan 12

4:20 pm - 7:38 pm

YOW

ORD

28h 18m3 stops

5:15 am - 12:25 am

ORD

YOW

18h 10m1 stop

$265Multiple Airlines

Wed, Jan 7 - Mon, Jan 12

4:20 pm - 9:03 pm

YOW

ORD

29h 43m3 stops

7:20 am - 12:25 am

ORD

YOW

16h 05m1 stop

$268Multiple Airlines

Sun, Dec 21 - Sun, Dec 28

5:10 am - 3:28 pm

YXU

ORD

11h 18m2 stops

2:00 pm - 9:21 pm

ORD

YXU

6h 21m1 stop

$677United Airlines

Useful Info

Low season	November
High season	July
Cheapest flight	$113

Best time to beat the crowds with an average 4% drop in price.

Flight from Ottawa to Chicago O'Hare Airport

BrianFlew with Air Canada

YYZ

ORD

Oct 2024

Be prepared for a labyrinthine experience traversing the various levels and passages of the Toronto airport. Bring quality walking shoes, as it is likely well over a km in total walking time.

Verified travelerFlew with United Airlines

YYZ

ORD

Mar 2024

Carry-on baggage sizing for United US bound flights appears to be much smaller than for Canadian flights, which forced me to check my bag at the last minute. So check online ahead of time

How does KAYAK find such low prices on flights from Ontario to Chicago?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Chicago.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Chicago?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Ontario to Chicago?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to Ontario with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Chicago?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Gurnee

South Haven

Merrillville

Oak Brook

Saint Joseph

Tinley Park

Elk Grove Village

Hoffman Estates

Des Plaines

Hammond

Willowbrook

Portage

Northbrook

Delavan

South Holland

Pleasant Prairie

Lansing

Elmhurst

Valparaiso

Lisle

Everything you need to know for your flight to Chicago

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Information on your arrival and departure airports

Chicago (ORD)

$113 Find Cheap Flights from Ontario to Chicago

KAYAK searches hundreds of travel sites at once for deals on flights to Chicago O'Hare Intl Airport

Everything you should know

Cheap Flights from Ontario to Chicago

Recent round-trip flight deals from Ontario to Chicago

Recent one-way flight deals from Ontario to Chicago

Recent last minute flight deals from Ontario to Chicago

Recent direct flight deals from Ontario to Chicago

Good to know

Flights from Ontario to Chicago: the best tips from KAYAK users

FAQs for booking Ontario to Chicago flights

How does KAYAK find such low prices on flights from Ontario to Chicago?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Chicago.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Chicago?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Ontario to Chicago?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Chicago with an airline and back to Ontario with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Chicago?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Chicago from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Chicago?

Everything you need to know for your flight to Chicago

Information on your arrival and departure airports

Cabin class types available on flights to Chicago

Complete your trip to Chicago with a hotel stay or car rental

Find direct flights for Chicago

Flights to other popular destinations

Flights from domestic origins to Ontario

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