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Cheap flights from Hamilton, ON to Illinois from C$ 230

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 26/9. Fares are subject to change and may not be available on all flights or dates of travel.
YHM — ORD
4 Aug — 11 Aug1
1 adult

Cheap flight deals from Hamilton to Illinois

Keep the following information in mind while searching for Hamilton to Illinois flight deals. Data was last updated 30 July 2025.

Round-trip from

C$ 466

One-way from

C$ 230

Popular in

December

Cheapest in

June

Average price

C$ 372
WestJet
  • WestJet
  • 19/10-26/10
  • 2 total stops
  • 37h 40m total
  • Hamilton to Illinois
Search Deals
WestJet
  • WestJet
  • 26/9
  • 1 total stop
  • 11h 43m total
  • Hamilton to Illinois
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 40 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 July 2025
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Find flight deals from Hamilton to Illinois

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 30 July 2025.

Sun 19/106:00 a.m.YHM - ORD
1 stop11h 43mWestJet
Sun 26/102:20 p.m.ORD - YHM
1 stop25h 57mWestJet
Deal found 29/7C$ 466
Thu 11/92:55 p.m.YHM - ORD
2 stops26h 48mMultiple Airlines
Thu 18/95:30 p.m.ORD - YHM
2 stops29h 18mMultiple Airlines
Deal found 30/7C$ 610

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 30 July 2025.
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

Sun 19/10

6:00 a.m.-4:43 p.m.

1 stop11h 43m

Chicago O'Hare Intl

Sun 26/10

2:20 p.m.-5:17 p.m.

1 stop25h 57m

C$ 466

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Thu 11/9

2:55 p.m.-4:43 p.m.

2 stops26h 48m

Chicago O'Hare Intl

Thu 18/9

5:30 p.m.-11:48 p.m.

2 stops29h 18m

C$ 610

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Fri 26/9

6:00 a.m.-4:43 p.m.

1 stop11h 43m

C$ 230

HamiltonChicago

YHM - ORD

YHMORD

Hamilton

Sat 13/9

2:55 p.m.-4:43 p.m.

2 stops26h 48m

C$ 331

Flights are sorted by cheapest round-trip flights first.

Deals found on 30/7

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, January is the cheapest month in which you can book a flight from Hamilton, Ontario to Illinois (average of C$ 261). Flying from Hamilton, Ontario to Illinois in March is currently the most expensive (average of C$ 352). 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 30 July 2025.
Read reviews from past customers who have flown WestJet from Hamilton to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
WestJet
7.2
Good
2,975 reviews
Check prices

Boarding

7.4

Crew

7.9

Comfort

7.0

Overall

7.2

Food

6.2

Entertainment

6.1

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight
WestJet
7.2
Good
2,975 reviews
WestJet
7.2
Good
2,975 reviews
Check prices

Boarding

7.4

Crew

7.9

Comfort

7.0

Overall

7.2

Food

6.2

Entertainment

6.1

Reviews

1 / 20
6.0
Good

Deb,Jan 2025

YYZ - YYC

Boarding went smoothly, you didn't accept debit card for food on flight

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, January is the cheapest month in which you can book a flight from Hamilton, Ontario to Illinois (average of C$ 261). Flying from Hamilton, Ontario to Illinois in March is currently the most expensive (average of C$ 352). 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 30 July 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapestC$ 304AverageC$ 384FlexibilityNo 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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