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$130+ 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — YHM
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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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 November 3, 2025.

This Mytrip deal was found by Cheapflights users on 11/2. 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.
Wed 12/175:00 amORD - YHM
1 stop9h 00mMultiple Airlines
Wed 12/247:25 amYHM - ORD
1 stop12h 14mMultiple Airlines
Deal found 11/2$323
This Mytrip deal was found by Cheapflights users on 10/31. 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.
Mon 12/225:00 amORD - YHM
1 stop9h 00mMultiple Airlines
Wed 12/247:25 amYHM - ORD
1 stop18h 05mMultiple Airlines
Deal found 10/31$425
This Mytrip deal was found by Cheapflights users on 11/1. 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.
Mon 11/311:58 pmORD - YHM
3 stops40h 19mMultiple Airlines
Fri 11/78:15 amYHM - ORD
2 stops22h 17mMultiple Airlines
Deal found 11/1$1,157
This Mytrip deal was found by Cheapflights users on 11/2. 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.
Mon 11/311:58 pmORD - YHM
3 stops40h 19mMultiple Airlines
Sun 11/96:10 pmYHM - ORD
3 stops31h 17mMultiple Airlines
Deal found 11/2$1,185

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 November 3, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$323
(Mytrip)

One-way from

$130
(Kiwi.com)

Popular in

January

Cheapest in

September

Average price

$312
Provider with most accurate pricing for Chicago (CHI)-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Toronto (YTO) flights.
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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. 10% potential increase in price ($34 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 November 2025
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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 November 3, 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

Wed 12/17

5:00 am-3:00 pm

1 stop9h 00m

Hamilton

Wed 12/24

7:25 am-6:39 pm

1 stop12h 14m

$323

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Mon 12/22

5:00 am-3:00 pm

1 stop9h 00m

Hamilton

Wed 12/24

7:25 am-12:30 am

1 stop18h 05m

$425

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Fri 1/16

6:53 pm-8:55 pm

2 stops25h 02m

Hamilton

Sun 1/18

7:25 am-11:42 pm

1 stop17h 17m

$564

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Sat 11/15

5:10 am-5:17 pm

2 stops35h 07m

Hamilton

Mon 11/17

7:00 am-9:47 am

3 stops27h 47m

$2,226

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Wed 12/17

5:00 am-3:00 pm

1 stop9h 00m

$130

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Mon 12/15

5:00 am-3:00 pm

1 stop9h 00m

$149

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Thu 12/11

1:52 pm-2:20 pm

2 stops23h 28m

$170

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Tue 12/16

9:14 pm-3:00 pm

2 stops16h 46m

$178

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Sun 12/14

9:14 pm-3:00 pm

2 stops16h 46m

$191

ChicagoHamilton

ORD - YHM

ORDYHM

Chicago O'Hare Intl

Mon 12/22

5:00 am-3:00 pm

1 stop9h 00m

$232

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/2

Showing 1-10 of 11 results
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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

What is the cheapest month to book a flight from Illinois to Hamilton, Ontario?

Currently, March is the cheapest month in which you can book a flight from Illinois to Hamilton, Ontario (average of $106). Flying from Illinois to Hamilton, Ontario in July is currently the most expensive (average of $173). 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.

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.

  • 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.

  • What is the cheapest month to book a flight from Illinois to Hamilton, Ontario?

    Currently, March is the cheapest month in which you can book a flight from Illinois to Hamilton, Ontario (average of $106). Flying from Illinois to Hamilton, Ontario in July is currently the most expensive (average of $173). 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

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Alternative routes for Illinois to Hamilton

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