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Cheap flights from Hamilton, ON to Illinois from C$ 276

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 6/5. Fares are subject to change and may not be available on all flights or dates of travel.
YHM — ORD
24 Apr — 1 May1
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 25 March 2026.

Sat 9/58:15 a.m.
YHM
-
ORD
2 stops24h 40m
Multiple Airlines
Sat 16/55:05 a.m.
ORD
-
YHM
1 stop9h 50m
Multiple Airlines
Deal found 24/3C$ 562
Mon 11/58:15 a.m.
YHM
-
ORD
1 stop16h 44m
Multiple Airlines
Mon 25/55:30 p.m.
ORD
-
YHM
2 stops27h 39m
Multiple Airlines
Deal found 24/3C$ 622
Mon 4/58:15 a.m.
YHM
-
ORD
1 stop17h 12m
Multiple Airlines
Sat 9/55:05 a.m.
ORD
-
YHM
1 stop9h 50m
Multiple Airlines
Deal found 20/3C$ 623
Wed 8/47:25 a.m.
YHM
-
ORD
1 stop10h 50m
Multiple Airlines
Sat 11/45:05 a.m.
ORD
-
YHM
1 stop8h 55m
Multiple Airlines
Deal found 23/3C$ 706
Tue 31/37:00 a.m.
YHM
-
ORD
2 stops26h 50m
Multiple Airlines
Sat 4/46:05 a.m.
ORD
-
YHM
1 stop15h 45m
Multiple Airlines
Deal found 23/3C$ 765
Fri 17/47:00 a.m.
YHM
-
ORD
2 stops29h 33m
Multiple Airlines
Fri 24/41:43 p.m.
ORD
-
YHM
1 stop24h 17m
Multiple Airlines
Deal found 20/3C$ 784
Tue 14/47:00 a.m.
YHM
-
ORD
1 stop10h 56m
Multiple Airlines
Tue 14/42:35 a.m.
ORD
-
YHM
2 stops20h 45m
Multiple Airlines
Deal found 20/3C$ 800
Tue 21/47:00 a.m.
YHM
-
ORD
1 stop31h 00m
Multiple Airlines
Tue 28/47:15 p.m.
ORD
-
YHM
2 stops40h 29m
Multiple Airlines
Deal found 24/3C$ 806

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 25 March 2026.

Round-trip from

C$ 562

One-way from

C$ 276

Popular in

December

Cheapest in

July

Average price

C$ 371
9/5-16/5
  • 9/5-16/5
  • 3 total stops
  • 34h 30m total
  • Hamilton to Illinois
Search Deals
Air Canada
  • Air Canada
  • 6/5
  • 1 total stop
  • 4h 31m total
  • Hamilton to Illinois
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (C$ 33 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 25 March 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 - ORD

YHMORD

Hamilton

Sat 9/5

8:15 a.m.-12:27 a.m.

1 stop17h 12m

Chicago O'Hare Intl

Sat 16/5

5:05 a.m.-3:55 p.m.

1 stop9h 50m

C$ 597

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Mon 4/5

8:15 a.m.-12:27 a.m.

1 stop17h 12m

Chicago O'Hare Intl

Sat 9/5

5:05 a.m.-3:55 p.m.

1 stop9h 50m

C$ 623

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Mon 11/5

8:15 a.m.-11:59 p.m.

1 stop16h 44m

Chicago O'Hare Intl

Mon 25/5

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

1 stop22h 45m

C$ 678
Quickest round-trip

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Wed 8/4

7:25 a.m.-5:15 p.m.

1 stop10h 50m

Chicago O'Hare Intl

Sat 11/4

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

1 stop8h 55m

C$ 706

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Tue 21/4

7:00 a.m.-1:00 p.m.

1 stop31h 00m

Chicago O'Hare Intl

Tue 28/4

7:15 p.m.-12:44 p.m.

2 stops40h 29m

C$ 806

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Mon 4/5

8:15 a.m.-11:55 p.m.

1 stop16h 40m

Chicago O'Hare Intl

Mon 11/5

5:15 a.m.-7:35 p.m.

2 stops37h 20m

C$ 820

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Thu 7/5

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

1 stop23h 30m

Chicago O'Hare Intl

Thu 14/5

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

1 stop22h 45m

C$ 840

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Fri 22/5

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

2 stops23h 55m

Chicago O'Hare Intl

Tue 26/5

5:30 p.m.-10:34 p.m.

2 stops28h 04m

C$ 982

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Wed 6/5

7:55 p.m.-4:40 p.m.

1 stop21h 45m

Chicago O'Hare Intl

Wed 13/5

7:40 a.m.-5:15 p.m.

2 stops32h 35m

C$ 1,007

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Thu 4/6

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

2 stops23h 55m

Chicago O'Hare Intl

Sun 7/6

5:30 p.m.-10:34 p.m.

2 stops28h 04m

C$ 1,089

Flights are sorted by cheapest round-trip flights first.

Deals found on 23/3

Showing 1-10 of 19 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

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

Currently, June is the cheapest month in which you can book a flight from Hamilton, Ontario to Illinois (average of C$ 114). Flying from Hamilton, Ontario to Illinois in February is currently the most expensive (average of C$ 243). 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 25 March 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
10,838 reviews
Check prices

Food

6.3

Crew

7.8

Boarding

7.3

Entertainment

6.8

Overall

7.1

Comfort

7.1

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
10,838 reviews
Air Canada
7.1
Good
10,838 reviews
Check prices

Food

6.3

Crew

7.8

Boarding

7.3

Entertainment

6.8

Overall

7.1

Comfort

7.1

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, June is the cheapest month in which you can book a flight from Hamilton, Ontario to Illinois (average of C$ 114). Flying from Hamilton, Ontario to Illinois in February is currently the most expensive (average of C$ 243). 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

Browse thousands of different options on Cheapflights for your next trip

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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 25 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 304AverageC$ 415FlexibilityNo cancel feeOn-time67%
Search Air Canada flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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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