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>

$111 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

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Cheap Flights from Ontario to Chicago

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

Mon, May 4 - Mon, May 11

6:30 pm - 8:08 pm

YUL

ORD

2h 38mnonstop

3:40 pm - 7:04 pm

ORD

YUL

2h 24mnonstop

$189Air Canada

Fri, May 1 - Fri, May 8

6:30 pm - 8:08 pm

YUL

ORD

2h 38mnonstop

8:45 am - 12:00 pm

ORD

YUL

2h 15mnonstop

$190Air Canada

Fri, Apr 24 - Sun, Apr 26

6:30 pm - 8:05 pm

YUL

ORD

2h 35mnonstop

8:40 am - 11:51 am

ORD

YUL

2h 11mnonstop

$192Air Canada

Wed, Sep 2 - Mon, Sep 7

10:05 am - 11:00 am

YTZ

ORD

1h 55mnonstop

7:00 am - 9:40 am

ORD

YTZ

1h 40mnonstop

$194Porter Airlines

Thu, Sep 10 - Sun, Sep 13

1:40 pm - 2:35 pm

YTZ

ORD

1h 55mnonstop

3:20 pm - 6:00 pm

ORD

YTZ

1h 40mnonstop

$201Porter Airlines

Sat, Jun 6 - Tue, Jun 9

8:50 am - 9:50 am

YYZ

ORD

2h 00mnonstop

9:15 pm - 11:59 pm

ORD

YYZ

1h 44mnonstop

$206United Airlines

Thu, Jul 16 - Mon, Jul 20

12:45 pm - 11:26 pm

YYZ

ORD

11h 41m

1 stop

9:40 pm - 10:04 am

ORD

YYZ

11h 24m

1 stop

$214United Airlines

Wed, Apr 15 - Mon, Apr 20

7:00 am - 9:17 pm

YOW

ORD

15h 17m

1 stop

12:47 pm - 5:25 pm

ORD

YOW

27h 38m

1 stop

$331Multiple Airlines

Mon, Apr 20 - Fri, Apr 24

7:00 am - 9:36 am

YOW

ORD

27h 36m

1 stop

12:47 pm - 12:35 pm

ORD

YOW

22h 48m

1 stop

$334Multiple Airlines

Thu, May 21 - Thu, May 28

5:55 pm - 4:40 pm

YXU

ORD

23h 45m

1 stop

5:30 pm - 5:20 am

ORD

YXU

10h 50m

1 stop

$496WestJet

Useful Info

Low season	February
High season	July
Cheapest flight	$111

Best time to beat the crowds but there is an average 27% increase in price.

Most popular time to fly and prices are also 2% lower on average.

Flight from Montreal 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

Hammond

Des Plaines

Hoffman Estates

Willowbrook

Portage

South Holland

Delavan

Northbrook

Lansing

Pleasant Prairie

Lisle

Elmhurst

Valparaiso

Everything you need to know for your flight to Chicago

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Chicago (ORD)

$111 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

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

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