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Cheap flights from Hamilton, ON to Illinois from C$ 232

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 13/3. Fares are subject to change and may not be available on all flights or dates of travel.
YHM — ORD
6 Mar — 13 Mar1
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 4 February 2026.

Wed 4/37:25 a.m.
YHM
-
ORD
1 stop12h 46m
Multiple Airlines
Wed 11/35:15 a.m.
ORD
-
YHM
1 stop8h 45m
Multiple Airlines
Deal found 2/2C$ 453
Thu 5/37:25 a.m.
YHM
-
ORD
1 stop17h 22m
Multiple Airlines
Thu 12/35:05 a.m.
ORD
-
YHM
1 stop8h 55m
Multiple Airlines
Deal found 3/2C$ 455
Thu 19/37:25 a.m.
YHM
-
ORD
1 stop10h 34m
Multiple Airlines
Thu 26/34:38 p.m.
ORD
-
YHM
2 stops20h 42m
Multiple Airlines
Deal found 2/2C$ 582
Thu 23/47:25 a.m.
YHM
-
ORD
1 stop13h 23m
Multiple Airlines
Mon 27/45:15 a.m.
ORD
-
YHM
1 stop8h 45m
Multiple Airlines
Deal found 1/2C$ 604
Thu 5/27:25 a.m.
YHM
-
ORD
1 stop17h 22m
Multiple Airlines
Sun 8/28:43 p.m.
ORD
-
YHM
1 stop17h 17m
Multiple Airlines
Deal found 2/2C$ 684

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 4 February 2026.

Round-trip from

C$ 453

One-way from

C$ 232

Popular in

January

Cheapest in

July

Average price

C$ 372
4/3-11/3
  • 4/3-11/3
  • 2 total stops
  • 21h 31m total
  • Hamilton to Illinois
Search Deals
Air Canada
  • Air Canada
  • 13/3
  • 1 total stop
  • 4h 34m total
  • Hamilton to Illinois
Search Deals
Highest demand for flights based on searches. 10% potential increase in price (C$ 57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
Search Deals

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 4 February 2026.
Use the filters below to find and compare flights from Hamilton to Illinois that are best for you.

Fly from

Hamilton

Fly to

Illinois

Route

Depart

Return

Price

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Wed 4/3

7:25 a.m.-7:11 p.m.

1 stop12h 46m

Chicago O'Hare Intl

Wed 11/3

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

1 stop8h 45m

C$ 453

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Thu 5/3

7:25 a.m.-5:46 p.m.

2 stops11h 21m

Chicago O'Hare Intl

Thu 12/3

5:05 a.m.-3:00 p.m.

1 stop8h 55m

C$ 482

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Thu 19/3

7:25 a.m.-4:59 p.m.

1 stop10h 34m

Chicago O'Hare Intl

Thu 26/3

4:38 p.m.-2:20 p.m.

2 stops20h 42m

C$ 582

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Thu 23/4

7:25 a.m.-7:48 p.m.

1 stop13h 23m

Chicago O'Hare Intl

Mon 27/4

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

1 stop8h 45m

C$ 604

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Sat 30/5

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

1 stop23h 30m

Chicago O'Hare Intl

Mon 1/6

5:30 p.m.-5:15 p.m.

1 stop22h 45m

C$ 907

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Mon 8/6

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

1 stop23h 30m

Chicago O'Hare Intl

Sun 14/6

5:30 p.m.-5:15 p.m.

1 stop22h 45m

C$ 990

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Sat 16/5

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

1 stop23h 30m

Chicago O'Hare Intl

Mon 18/5

5:30 p.m.-5:15 p.m.

1 stop22h 45m

C$ 1,084

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Thu 19/3

7:25 a.m.-4:59 p.m.

1 stop10h 34m

C$ 232

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Tue 3/3

7:00 a.m.-11:47 p.m.

2 stops17h 47m

C$ 235

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Sat 7/3

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

1 stop14h 48m

C$ 262

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 15 results
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

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

Currently, April is the cheapest month in which you can book a flight from Hamilton, Ontario to Illinois (average of C$ 112). Flying from Hamilton, Ontario to Illinois in February is currently the most expensive (average of C$ 251). 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.

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated 4 February 2026.
Read reviews from past customers who have flown Air Canada from Hamilton to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Air Canada
7.1
Good
10,688 reviews
Check prices

Food

6.3

Comfort

7.1

Boarding

7.3

Entertainment

6.8

Overall

7.1

Crew

7.8

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.
Air Canada
7.1
Good
10,688 reviews
Air Canada
7.1
Good
10,688 reviews
Check prices

Food

6.3

Comfort

7.1

Boarding

7.3

Entertainment

6.8

Overall

7.1

Crew

7.8

Reviews

1 / 20
4.0
Okay

Sugith,Jan 2026

YSB - YYZ

Left 2 hours late. Stuck on plane for an hour after boarding before take off.

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.

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

    Currently, April is the cheapest month in which you can book a flight from Hamilton, Ontario to Illinois (average of C$ 112). Flying from Hamilton, Ontario to Illinois in February is currently the most expensive (average of C$ 251). 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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Top airline flying from Hamilton to Illinois

Discover the top airline that operate flights from Hamilton to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 629,999 searches. Data last updated 4 February 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 297AverageC$ 366FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

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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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