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>

$84 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

$180

Typical prices: $245-$370

United Airlines

Fri 1/16Tue 3/10

YYZ - ORD • Non-stop

Cheapest non-stop

$182

Typical prices: $261-$405

United Airlines

Sat 1/10Sun 1/11

YYZ - ORD • Non-stop

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

Fri, Jan 16 - Tue, Mar 10

5:30 pm - 6:50 pmYYZ-ORD

2h 20mnonstop

8:50 am - 2:14 pmORD-YYZ

4h 24m1 stop

$180United Airlines

Find Deal

Sat, Jan 10 - Sun, Jan 11

3:30 pm - 4:40 pmYYZ-ORD

2h 10mnonstop

1:00 pm - 7:17 pmORD-YYZ

5h 17m1 stop

$182United Airlines

Find Deal

Thu, Jan 8 - Mon, Jan 12

9:00 am - 10:06 amYYZ-ORD

2h 06mnonstop

6:05 am - 11:48 amORD-YYZ

4h 43m1 stop

$183United Airlines

Find Deal

Sun, Feb 1 - Thu, Feb 5

8:15 am - 9:13 amYYZ-ORD

1h 58mnonstop

2:00 pm - 4:39 pmORD-YYZ

1h 39mnonstop

$184Air Canada

Find Deal

Thu, Jan 8 - Sun, Jan 11

7:35 am - 10:04 pmYYZ-ORD

15h 29m1 stop

7:30 am - 2:40 pmORD-YYZ

30h 10m1 stop

$187Multiple Airlines

Find Deal

Thu, Jan 8 - Sun, Jan 11

7:04 pm - 8:04 pmYYZ-ORD

2h 00mnonstop

8:07 am - 10:53 amORD-YYZ

1h 46mnonstop

$189American Airlines

Find Deal

Thu, Jan 8 - Sun, Jan 11

5:15 pm - 7:17 pmYYZ-ORD

27h 02m1 stop

7:30 am - 2:40 pmORD-YYZ

30h 10m1 stop

$191Multiple Airlines

Find Deal

Tue, Jan 13 - Tue, Jan 20

3:50 pm - 5:50 pmYUL-ORD

3h 00mnonstop

6:39 am - 12:24 pmORD-YUL

4h 45m1 stop

$196American Airlines

Find Deal

Fri, Jan 30 - Sun, Feb 1

8:00 am - 1:01 pmYUL-ORD

6h 01m1 stop

7:15 am - 10:20 amORD-YUL

2h 05mnonstop

$199Air Canada

Find Deal

Sat, Apr 4 - Tue, Apr 7

6:00 am - 1:19 pmYUL-ORD

8h 19m1 stop

1:56 pm - 11:11 pmORD-YUL

8h 15m1 stop

$213Delta

Find Deal

Useful Info

Low season	January
High season	April
Cheapest flight	$84

Best time to beat the crowds but there is an average 42% increase in price.

Most popular time to fly and prices are also 7% lower on average.

Flight from Ottawa to Chicago O'Hare Airport

BrianFlew with Air CanadaYYZ-ORDOct 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 AirlinesYYZ-ORDMar 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

Delavan

Northbrook

South Holland

Lansing

Pleasant Prairie

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)

$84 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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