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$131+ Cheap flights from Illinois to Hamilton, ON (YHM)

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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YHM
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Illinois to Hamilton

Keep the following information in mind while searching for Illinois to Hamilton flight deals. Data was last updated September 11, 2025.

Round-trip from

$260
(oojo)

One-way from

$131
(oojo)

Popular in

January

Cheapest in

July

Average price

$276
From Illinois to Hamilton
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One-way flight from Illinois to Hamilton
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Highest demand for flights based on searches. 8% potential increase in price ($28 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 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 Illinois to Hamilton

Cheapest flights from Illinois to Hamilton
Explore the most affordable flight options available from Illinois to Hamilton. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This oojo deal was found by Cheapflights users on 9/10. 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 10/175:30 pmORD - YHM
1 stop30h 10mWestJet
Mon 10/206:00 amYHM - ORD
1 stop11h 43mWestJet
Deal found 9/10$334
This oojo deal was found by Cheapflights users on 9/11. 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.
Sun 10/262:20 pmORD - YHM
1 stop25h 57mWestJet
Sun 11/26:10 pmYHM - ORD
1 stop20h 25mWestJet
Deal found 9/11$335
This oojo deal was found by Cheapflights users on 9/10. 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 10/175:30 pmORD - YHM
1 stop30h 10mWestJet
Sun 10/196:00 amYHM - ORD
1 stop11h 43mWestJet
Deal found 9/10$342
This oojo deal was found by Cheapflights users on 9/11. 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 10/105:30 pmORD - YHM
1 stop30h 10mWestJet
Sun 10/126:00 amYHM - ORD
1 stop11h 43mWestJet
Deal found 9/11$359
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/125:30 pmORD - YHM
1 stop30h 10mWestJet
Sun 10/196:00 amYHM - ORD
1 stop11h 43mWestJet
Deal found 9/10$370
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/125:30 pmORD - YHM
1 stop30h 10mMultiple Airlines
Sun 10/192:55 pmYHM - ORD
2 stops26h 48mMultiple Airlines
Deal found 9/10$372
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 10/125:30 pmORD - YHM
1 stop30h 10mMultiple Airlines
Sat 10/182:55 pmYHM - ORD
2 stops26h 48mMultiple Airlines
Deal found 9/10$375
This Mytrip deal was found by Cheapflights users on 9/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:30 pmORD - YHM
2 stops22h 14mMultiple Airlines
Sun 10/195:45 pmYHM - ORD
2 stops23h 58mMultiple Airlines
Deal found 9/10$386
This oojo deal was found by Cheapflights users on 9/10. 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.
Sun 10/195:30 pmORD - YHM
1 stop30h 10mWestJet
Fri 10/246:00 amYHM - ORD
1 stop11h 43mWestJet
Deal found 9/10$470

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Hamilton 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 11, 2025.
Use the filters below to find and compare flights from Illinois to Hamilton that are best for you.

Fly from

Illinois

Fly to

Hamilton

Route

Depart

Return

Price

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Fri 10/17

5:30 pm-12:40 am

1 stop30h 10m

Hamilton

Mon 10/20

6:00 am-4:43 pm

1 stop11h 43m

$334

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Sun 10/26

2:20 pm-5:17 pm

1 stop25h 57m

Hamilton

Sun 11/2

6:10 pm-1:35 pm

1 stop20h 25m

$335

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Sun 10/12

5:30 pm-12:40 am

1 stop30h 10m

Hamilton

Sat 10/18

6:00 am-4:43 pm

1 stop11h 43m

$342

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Fri 10/17

5:30 pm-12:40 am

1 stop30h 10m

Hamilton

Sun 10/19

6:00 am-4:43 pm

1 stop11h 43m

$342

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Fri 10/10

5:30 pm-12:40 am

1 stop30h 10m

Hamilton

Sun 10/12

6:00 am-4:43 pm

1 stop11h 43m

$359

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Sun 10/12

5:30 pm-12:40 am

1 stop30h 10m

Hamilton

Sun 10/19

6:00 am-4:43 pm

1 stop11h 43m

$370

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Sun 10/12

5:30 pm-12:40 am

1 stop30h 10m

Hamilton

Sun 10/19

2:55 pm-4:43 pm

2 stops26h 48m

$372

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Sun 10/12

5:30 pm-12:40 am

1 stop30h 10m

Hamilton

Sat 10/18

2:55 pm-4:43 pm

2 stops26h 48m

$375

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Fri 10/17

5:30 pm-4:44 pm

2 stops22h 14m

Hamilton

Sun 10/19

5:45 pm-4:43 pm

2 stops23h 58m

$386

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Sun 10/19

5:30 pm-12:40 am

1 stop30h 10m

Hamilton

Fri 10/24

6:00 am-4:43 pm

1 stop11h 43m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 19 results
1
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Best time to book a flight from Illinois to Hamilton

Have a flexible travel schedule? Discover the best time to fly to Hamilton from Illinois 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 Illinois to Hamilton
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Hamilton. 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 into for flights to Hamilton from Illinois?

    Most people fly into Hamilton (YHM) if they book a flight to Hamilton from Illinois. Hamilton is conveniently located just 6.8 mi from Hamilton’s city center.

  • How long is the flight from Illinois to Hamilton, Ontario?

    A quick flight from Illinois to Hamilton, Ontario can take about 30h 10m. WestJet provides one of the quickest options available for as low as $334. The distance from Illinois to Hamilton, Ontario is about 414 mi.

  • Can I find deals for flights from Illinois to Hamilton that include hotel bookings?

    Yes. In addition to deals on Illinois to Hamilton flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to Hamilton?

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

  • Can I find deals for business class flights from Illinois to Hamilton?

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

See more FAQs

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