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O'Hare Intl

$142+ Cheap flights from Hamilton, ON (YHM) to O'Hare Intl (ORD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
YHM — ORD
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
1 adult, Economy
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Cheap flight deals from Hamilton to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from Hamilton (YHM) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 16, 2025.

Round-trip from

$256
(oojo)

One-way from

$142
(Trip.com)

Popular in

January

Cheapest in

April

Average price

$378
From Hamilton to Chicago O'Hare Intl
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One-way flight from Hamilton to Chicago O'Hare Intl
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Highest demand for flights based on searches. 11% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Hamilton to O'Hare Intl

Cheapest flights from Hamilton to O'Hare Intl
Explore the most affordable flight options available from Hamilton to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 16, 2025.

This oojo deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/256:00 amYHM - ORD
1 stop11h 43mWestJet
Sun 10/262:20 pmORD - YHM
1 stop25h 57mWestJet
Deal found 9/13$256
This oojo deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:00 amYHM - ORD
1 stop11h 43mWestJet
Sun 10/262:20 pmORD - YHM
1 stop25h 57mWestJet
Deal found 9/14$257
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/126:00 amYHM - ORD
1 stop11h 43mWestJet
Sun 10/195:30 pmORD - YHM
1 stop30h 10mWestJet
Deal found 9/14$274
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/126:00 amYHM - ORD
1 stop11h 43mMultiple Airlines
Sun 10/195:30 pmORD - YHM
2 stops29h 29mMultiple Airlines
Deal found 9/14$297
This oojo deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:00 amYHM - ORD
1 stop11h 43mWestJet
Sun 10/195:30 pmORD - YHM
1 stop30h 10mWestJet
Deal found 9/15$307
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/1612:10 pmYHM - ORD
1 stop29h 33mMultiple Airlines
Mon 10/209:54 pmORD - YHM
2 stops41h 50mMultiple Airlines
Deal found 9/14$357
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/812:10 pmYHM - ORD
2 stops25h 21mMultiple Airlines
Sun 10/125:30 pmORD - YHM
1 stop30h 10mMultiple Airlines
Deal found 9/16$402
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/317:55 pmYHM - ORD
2 stops43h 40mMultiple Airlines
Fri 11/72:20 pmORD - YHM
1 stop32h 35mMultiple Airlines
Deal found 9/15$431

Cheapflights Fare Finder

 
Customize your flight search to find flights from Hamilton to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 16, 2025.
Use the filters below to find and compare flights from Hamilton to Chicago O'Hare Intl Airport that are best for you.

Fly from

Hamilton

Fly to

O'Hare Intl

Route

Depart

Return

Price

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Sat 10/25

6:00 am-4:43 pm

1 stop11h 43m

Chicago O'Hare Intl

Sun 10/26

2:20 pm-5:17 pm

1 stop25h 57m

$256

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Fri 10/17

6:00 am-4:43 pm

1 stop11h 43m

Chicago O'Hare Intl

Sun 10/26

2:20 pm-5:17 pm

1 stop25h 57m

$257

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Sun 10/12

6:00 am-4:43 pm

1 stop11h 43m

Chicago O'Hare Intl

Sun 10/19

5:30 pm-12:40 am

1 stop30h 10m

$274

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Sun 10/12

6:00 am-4:43 pm

1 stop11h 43m

Chicago O'Hare Intl

Sun 10/19

5:30 pm-11:59 pm

2 stops29h 29m

$297

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Sat 10/18

6:00 am-4:43 pm

1 stop11h 43m

Chicago O'Hare Intl

Sat 10/25

5:30 pm-5:17 pm

1 stop22h 47m

$307

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Fri 10/17

6:00 am-4:43 pm

1 stop11h 43m

Chicago O'Hare Intl

Sun 10/19

5:30 pm-12:40 am

1 stop30h 10m

$307

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Thu 10/16

12:10 pm-4:43 pm

1 stop29h 33m

Chicago O'Hare Intl

Mon 10/20

9:54 pm-4:44 pm

2 stops41h 50m

$357

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Wed 10/8

12:10 pm-12:31 pm

2 stops25h 21m

Chicago O'Hare Intl

Sun 10/12

5:30 pm-12:40 am

1 stop30h 10m

$402

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Fri 10/31

7:55 pm-2:35 pm

2 stops43h 40m

Chicago O'Hare Intl

Fri 11/7

2:20 pm-11:55 pm

1 stop32h 35m

$431

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Sat 10/18

6:00 am-4:43 pm

1 stop11h 43m

$142

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 16 results
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Best time to book a flight from Hamilton to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from Hamilton with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Hamilton to Chicago O'Hare Intl Airport

What is the cheapest month to book a flight from Hamilton, Ontario to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Hamilton, Ontario to Chicago O'Hare Intl Airport (average of $245). Flying from Hamilton, Ontario to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from YHM to ORD?

Find hourly flight availability from Hamilton to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 16, 2025.

When flying from Hamilton, Ontario to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Related info for your journey

Find useful and relevant information for your journey from Hamilton to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Hamilton to Chicago O'Hare Intl?

    For a flight from Hamilton to Chicago O'Hare Intl, you will be flying from Hamilton. Hamilton (YHM) is just 6.8 mi from the center of the city. Hamilton is the only Hamilton airport and it handles 0 outbound flights to Chicago O'Hare Intl per day. 0 airlines have flights to Chicago O'Hare Intl from Hamilton on a regular basis.

  • How long is the flight from Hamilton, Ontario to Chicago O'Hare Intl Airport?

    A quick flight from Hamilton, Ontario to Chicago O'Hare Intl Airport can take about 11h 43m. WestJet provides one of the quickest options available for as low as $256. There are 414 mi between Hamilton, Ontario and Chicago O'Hare Intl Airport.

  • Can I find deals for flights from Hamilton to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Hamilton to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Hamilton to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Hamilton to O'Hare Intl.

  • Can I find deals for business class flights from Hamilton to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Hamilton to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Hamilton, Ontario to Chicago O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Hamilton, Ontario to Chicago O'Hare Intl Airport (average of $245). Flying from Hamilton, Ontario to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $321). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Skokie
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Orland Park
Beloit
Racine
Rockford
Oak Brook
Elk Grove Village
Downers Grove
Naperville
Evanston
Merrillville
Bridgeview
Warrenville

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