How does KAYAK find such low prices on flights from Ontario to Chicago O'Hare Airport?

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 O'Hare Airport. 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 O'Hare Airport?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport from Ontario is likely to change within 7 days, so travellers 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 O'Hare Airport?

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 O'Hare Airport 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 O'Hare Airport?

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 O'Hare Airport 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>

C$ 137 CHEAP FLIGHTS from Ontario to Chicago O'Hare (ORD)

ORD

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

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Cheapest round-trip

C$ 255

Overall average: C$ 471

Air Canada

Thu 21/5Sun 24/5

YUL - ORD • Direct

Cheapest one-way flights

C$ 137

Typical prices: C$ 248-C$ 340

Air Canada

Wed 20/5

YUL - ORD • Direct

Start a new search

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We hope you love your trip to O'Hare Intl!

Flight Deals

Cheap Flights from Ontario to O'Hare Intl

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 O'Hare Intl

Thu, 21 May - Sun, 24 May

6:30 p.m. - 8:08 p.m.

YUL

ORD

2h 38mdirect

8:45 a.m. - 12:00 p.m.

ORD

YUL

2h 15mdirect

C$ 255Air Canada

Tue, 17 Feb - Fri, 3 Apr

9:00 p.m. - 10:04 p.m.

YYZ

ORD

2h 04mdirect

7:04 a.m. - 9:54 a.m.

ORD

YYZ

1h 50mdirect

C$ 260United Airlines

Tue, 10 Mar - Tue, 17 Mar

8:45 a.m. - 9:50 a.m.

YYZ

ORD

2h 05mdirect

6:25 p.m. - 9:18 p.m.

ORD

YYZ

1h 53mdirect

C$ 264Lufthansa

Thu, 19 Feb - Mon, 23 Feb

9:15 a.m. - 2:20 p.m.

YUL

ORD

6h 05m

1 stop

3:51 p.m. - 9:42 p.m.

ORD

YUL

4h 51m

1 stop

C$ 273United Airlines

Fri, 27 Feb - Sun, 1 Mar

4:44 p.m. - 5:44 p.m.

YYZ

ORD

2h 00mdirect

5:00 a.m. - 11:13 a.m.

ORD

YYZ

5h 13m

1 stop

C$ 274American Airlines

Sun, 15 Feb - Sun, 22 Feb

7:30 a.m. - 12:05 p.m.

YUL

ORD

5h 35m

1 stop

8:23 a.m. - 3:22 p.m.

ORD

YUL

5h 59m

1 stop

C$ 274American Airlines

Tue, 17 Feb - Sat, 21 Feb

6:00 a.m. - 1:20 p.m.

YUL

ORD

8h 20m

1 stop

6:30 a.m. - 11:59 a.m.

ORD

YUL

4h 29m

1 stop

C$ 282Delta

Sat, 14 Feb - Wed, 1 Apr

5:15 p.m. - 8:44 p.m.

YYZ

ORD

4h 29m

1 stop

9:50 a.m. - 3:08 p.m.

ORD

YYZ

4h 18m

1 stop

C$ 294Delta

Mon, 23 Feb - Wed, 25 Feb

7:40 p.m. - 12:40 a.m.

YTZ

ORD

6h 00m

1 stop

8:30 a.m. - 8:03 p.m.

ORD

YTZ

10h 33m

2 stops

C$ 368Multiple Airlines

Thu, 19 Feb - Mon, 23 Feb

7:25 a.m. - 9:13 p.m.

YHM

ORD

14h 48m

1 stop

5:15 a.m. - 3:00 p.m.

ORD

YHM

8h 45m

1 stop

C$ 414Multiple Airlines

Useful Info

Low season	January
High season	May
Cheapest flight	C$ 137

Best time to beat the crowds but there is an average 9% increase in price.

Most popular time to fly and prices are also 1% 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 O'Hare Airport?
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 O'Hare Airport.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Chicago O'Hare Airport?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Chicago O'Hare Airport from Ontario is likely to change within 7 days, so travellers know whether to wait or book now.
What is the Hacker Fare option on flights from Ontario to Chicago O'Hare Airport?
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 O'Hare Airport 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 O'Hare Airport?
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 O'Hare Airport from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Rosemont

Schaumburg

Naperville

Skokie

Deerfield

Vernon Hills

Elk Grove Village

Downers Grove

Orland Park

Romeoville

Hoffman Estates

Beloit

Tinley Park

Oak Brook

Bolingbrook

Northbrook

Aurora

Gurnee

Munster

Kenosha

Everything you need to know for your flight to O'Hare Intl

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Chicago O'Hare Airport (ORD)

ORD

C$ 137 Find Cheap Flights from Ontario to Chicago O'Hare Airport

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 O'Hare Intl

Recent round-trip flight deals from Ontario to O'Hare Intl

Recent one-way flight deals from Ontario to O'Hare Intl

Recent last minute flight deals from Ontario to O'Hare Intl

Recent direct flight deals from Ontario to O'Hare Intl

Good to know

Flights from Ontario to O'Hare Intl: the best tips from KAYAK users

FAQs for booking Ontario to Chicago O'Hare Airport flights

How does KAYAK find such low prices on flights from Ontario to Chicago O'Hare Airport?

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 O'Hare Airport.

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

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

What is the Hacker Fare option on flights from Ontario to Chicago O'Hare Airport?

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 O'Hare Airport 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 O'Hare Airport?

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 O'Hare Airport from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near O'Hare Intl?

Everything you need to know for your flight to O'Hare Intl

Information on your arrival and departure airports

Cabin class types available on flights to O'Hare Intl

Complete your trip to O'Hare Intl with a hotel stay or car rental

Flights to other popular destinations

Flights from domestic origins to Ontario

Choose which airport to fly into in Chicago