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Cheap flights from Hamilton, ON to Illinois from C$ 297

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 12/9. Fares are subject to change and may not be available on all flights or dates of travel.
YHM — ORD
14 Sep — 21 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Hamilton to Illinois

Enter your travel dates to find the best prices.

Cheapest flights from Hamilton to Illinois
Explore the most affordable flight options available from Hamilton to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 August 2026.

Thu 10/96:05 a.m. -
3 stops35h 35m
Sun 13/95:30 p.m. -
3 stops23h 05m
Deal found 14/8C$ 613
Thu 24/96:05 a.m. -
3 stops35h 35m
Sun 27/95:30 p.m. -
2 stops27h 39m
Deal found 14/8C$ 685

Find flight deals from Hamilton to Illinois

Keep the following information in mind while searching for Hamilton to Illinois flight deals. Data was last updated 15 August 2026.

Round-trip from

C$ 613

One-way from

C$ 297

Popular in

July

Cheapest in

September

Average price

C$ 386
10/9-13/9
  • 10/9-13/9
  • 6 total stops
  • 58h 40m total
  • Hamilton to Illinois
Search Deals
12/9
  • 12/9
  • 3 total stops
  • 22h 23m total
  • Hamilton to Illinois
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (C$ 24 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 0% potential price decrease (C$ 5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Hamilton to Illinois 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 629,999 searches. Data last updated 15 August 2026.
Use the filters below to find and compare flights from Hamilton to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Thu 10/9

6:05 a.m.-4:40 p.m.

3 stops35h 35m

Chicago O'Hare Intl

Sun 13/9

5:30 p.m.-5:35 p.m.

3 stops23h 05m

C$ 628

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Thu 1/10

3:45 p.m.-4:40 p.m.

3 stops25h 55m

Chicago O'Hare Intl

Thu 8/10

5:30 p.m.-10:25 p.m.

3 stops27h 55m

C$ 817
Quickest round-trip

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Fri 25/9

6:55 p.m.-10:15 a.m.

2 stops16h 20m

Chicago O'Hare Intl

Mon 28/9

5:30 p.m.-3:05 p.m.

2 stops20h 35m

C$ 836

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Thu 24/9

6:55 p.m.-10:15 a.m.

2 stops16h 20m

Chicago O'Hare Intl

Thu 1/10

5:30 p.m.-3:05 p.m.

2 stops20h 35m

C$ 840

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Fri 4/9

6:05 a.m.-4:40 p.m.

3 stops35h 35m

Chicago O'Hare Intl

Sun 6/9

5:30 p.m.-10:09 p.m.

2 stops27h 39m

C$ 867

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Fri 11/9

3:45 p.m.-2:43 p.m.

2 stops23h 58m

Chicago O'Hare Intl

Sun 13/9

5:30 p.m.-10:25 p.m.

3 stops27h 55m

C$ 950

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Sat 17/10

7:25 a.m.-4:40 p.m.

2 stops34h 15m

Chicago O'Hare Intl

Mon 19/10

5:30 p.m.-6:00 p.m.

2 stops23h 30m

C$ 960

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Thu 27/8

9:50 a.m.-4:40 p.m.

2 stops31h 50m

Chicago O'Hare Intl

Wed 2/9

5:30 p.m.-2:54 p.m.

2 stops20h 24m

C$ 967
Cheapest one-way

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Wed 9/9

6:10 p.m.-4:40 p.m.

1 stop23h 30m

C$ 432

HamiltonChicago

YHM Hamilton - ORD Chicago O'Hare Intl

YHMORD

Hamilton

Mon 14/9

5:45 p.m.-4:40 p.m.

2 stops23h 55m

C$ 433

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/8

Showing 1-10 of 17 resultsSorted by cheapest first
1
2

Best time to book a flight from Hamilton to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois 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 Illinois

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 Hamilton to Illinois. 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 Illinois?

    For a flight from Hamilton to Illinois, you will be flying from Hamilton. Hamilton (YHM) is just 10.9 km from the centre of the city.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Hamilton to Illinois 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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How does Cheapflights help users find flights from Hamilton to Illinois?

Deals for Hamilton to Illinois flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Hamilton to Illinois?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Illinois from Hamilton.

Can Cheapflights find flights from Hamilton to Illinois with no change fees?

Yes! Cheapflights helps users easily find flights from Hamilton to Illinois with no change fees.

Can Cheapflights notify me if prices for flights from Hamilton to Illinois become cheaper?

Yes! Start tracking prices for Hamilton to Illinois flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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