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$39+ Cheap flights from Chicago (CHI) to Illinois

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 12/22. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — ORD
Jan 9 — Jan 161
Fri 1/9
Fri 1/16
1 adult, Economy
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Cheap flight deals from Chicago to Illinois

Cheapest flights from Chicago to Illinois
Explore the most affordable flight options available from Chicago to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 10, 2025.

This Mytrip deal was found by Cheapflights users on 12/9. 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.
Fri 12/1210:50 amORD - BRL
Nonstop1h 20mContour
Sat 12/209:00 amBRL - ORD
Nonstop1h 10mContour
Deal found 12/9$67
This Booking.com deal was found by Cheapflights users on 12/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/96:25 pmORD - BRL
Nonstop1h 20mContour
Tue 12/169:00 amBRL - ORD
Nonstop1h 10mContour
Deal found 12/9$69
This Booking.com deal was found by Cheapflights users on 12/10. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:50 amORD - BRL
Nonstop1h 20mContour
Thu 12/259:00 amBRL - ORD
Nonstop1h 10mContour
Deal found 12/10$70
This Contour deal was found by Cheapflights users on 12/8. 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 Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/246:25 pmORD - BRL
Nonstop1h 20mContour
Sun 12/284:25 pmBRL - ORD
Nonstop1h 20mContour
Deal found 12/8$98
This Mytrip deal was found by Cheapflights users on 12/8. 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.
Tue 12/236:25 pmORD - BRL
Nonstop1h 20mContour
Sat 12/279:00 amBRL - ORD
Nonstop1h 10mContour
Deal found 12/8$105
This Gotogate deal was found by Cheapflights users on 12/7. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2010:50 amORD - BRL
Nonstop1h 20mContour
Mon 12/224:25 pmBRL - ORD
Nonstop1h 20mContour
Deal found 12/7$111
This United Airlines deal was found by Cheapflights users on 12/8. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:45 amORD - DEC
Nonstop1h 20mUnited Airlines
Fri 1/97:09 pmDEC - ORD
Nonstop1h 16mUnited Airlines
Deal found 12/8$149
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/304:50 pmORD - DEC
Nonstop1h 09mUnited Airlines
Fri 1/27:09 pmDEC - ORD
Nonstop1h 16mUnited Airlines
Deal found 12/9$159
This American Airlines deal was found by Cheapflights users on 12/10. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:57 pmORD - STL
Nonstop1h 26mAmerican Airlines
Tue 1/136:00 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Deal found 12/10$170
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:45 amORD - DEC
Nonstop1h 20mUnited Airlines
Thu 12/259:44 amDEC - ORD
Nonstop1h 16mUnited Airlines
Deal found 12/9$174
This Contour deal was found by Cheapflights users on 12/8. 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 Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1710:50 amORD - BRL
Nonstop1h 20mContour
Sun 12/219:00 amBRL - ORD
Nonstop1h 10mContour
Deal found 12/8$178
This American Airlines deal was found by Cheapflights users on 12/8. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:29 amORD - PIA
Nonstop1h 14mAmerican Airlines
Thu 1/17:59 pmPIA - ORD
Nonstop1h 22mAmerican Airlines
Deal found 12/8$179

Find flight deals from Chicago to Illinois

Keep the following information in mind while searching for Chicago to Illinois flight deals. Data was last updated December 10, 2025.

Round-trip from

$67
(Mytrip)

One-way from

$39
(Contour)

Good round-trip deal

$138 or less

Good one-way deal

$44 or less
From Chicago (CHI) to Illinois
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One-way flight from Chicago (CHI) to Illinois
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Price to beat on a round-trip flight from Chicago (CHI) to Illinois.
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Price to beat on a one-way flight from Chicago (CHI) to Illinois.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago 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 2,558,603 searches. Data last updated December 10, 2025.
Use the filters below to find and compare flights from Chicago to Illinois that are best for you.

Fly from

Chicago

Fly to

Illinois

Route

Depart

Return

Price

ChicagoBurlington

ORD - BRL

ORDBRL

Chicago O'Hare Intl

Fri 12/26

10:50 am-12:10 pm

Nonstop1h 20m

Burlington

Mon 12/29

9:00 am-10:10 am

Nonstop1h 10m

$67

ChicagoBurlington

ORD - BRL

ORDBRL

Chicago O'Hare Intl

Wed 12/24

6:25 pm-7:45 pm

Nonstop1h 20m

Burlington

Thu 12/25

9:00 am-10:10 am

Nonstop1h 10m

$67

ChicagoBurlington

ORD - BRL

ORDBRL

Chicago O'Hare Intl

Mon 1/12

6:25 pm-7:45 pm

Nonstop1h 20m

Burlington

Fri 1/16

4:25 pm-5:45 pm

Nonstop1h 20m

$68

ChicagoBurlington

ORD - BRL

ORDBRL

Chicago O'Hare Intl

Wed 12/24

10:50 am-12:10 pm

Nonstop1h 20m

Burlington

Sun 12/28

4:25 pm-5:45 pm

Nonstop1h 20m

$69

ChicagoBurlington

ORD - BRL

ORDBRL

Chicago O'Hare Intl

Sat 12/20

10:50 am-12:10 pm

Nonstop1h 20m

Burlington

Thu 12/25

9:00 am-10:10 am

Nonstop1h 10m

$70

ChicagoBurlington

ORD - BRL

ORDBRL

Chicago O'Hare Intl

Thu 1/1

10:50 am-12:10 pm

Nonstop1h 20m

Burlington

Sun 1/4

9:00 am-10:10 am

Nonstop1h 10m

$77

ChicagoBurlington

ORD - BRL

ORDBRL

Chicago O'Hare Intl

Thu 1/1

10:50 am-12:10 pm

Nonstop1h 20m

Burlington

Sat 1/31

9:00 am-10:10 am

Nonstop1h 10m

$77

ChicagoBurlington

ORD - BRL

ORDBRL

Chicago O'Hare Intl

Sat 1/3

6:25 pm-7:45 pm

Nonstop1h 20m

Burlington

Sun 1/4

9:00 am-10:10 am

Nonstop1h 10m

$89

ChicagoBurlington

ORD - BRL

ORDBRL

Chicago O'Hare Intl

Thu 2/12

10:50 am-12:10 pm

Nonstop1h 20m

Burlington

Mon 2/16

9:00 am-10:10 am

Nonstop1h 10m

$98

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 2/3

6:10 am-7:35 am

Nonstop1h 25m

Lambert-St Louis

Sat 2/28

6:10 am-7:20 am

Nonstop1h 10m

$144

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/9

Showing 1-10 of 60 results
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Best time to book a flight from Chicago to Illinois

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

What is the cheapest time of day to fly from CHI to IL?

Find hourly flight availability from Chicago to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 10, 2025.

A simple way to save on the total cost of your ticket is to fly from Chicago to Illinois in the afternoon. If you’re flexible enough to do this you can expect to save up to 32% on your trip compared to booking a flight at noon.

What is the cheapest day to fly from Chicago to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Chicago to Illinois. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Chicago to Illinois flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Wednesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 December 10, 2025.
Read reviews from past customers who have flown Contour, United Airlines, and Southern / Mokulele from Chicago to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Contour
7.6
Good
43 reviews

Comfort

7.3

Boarding

7.6

Food

6.9

Overall

7.6

Entertainment

6.1

Crew

7.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Oct 2025

CLT - PAH

The steward on my flight from Charlotte to Paducah was the kindest person I’ve ever met. He made everyone feel comfortable, and even laugh a little. Not to mention his hair was top tier. He deserves a raise. Xoxo
Contour
7.6
Good
43 reviews
Contour
7.6
Good
43 reviews

Comfort

7.3

Boarding

7.6

Food

6.9

Overall

7.6

Entertainment

6.1

Crew

7.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Oct 2025

CLT - PAH

The steward on my flight from Charlotte to Paducah was the kindest person I’ve ever met. He made everyone feel comfortable, and even laugh a little. Not to mention his hair was top tier. He deserves a raise. Xoxo
United Airlines
7.4
Good
9,095 reviews
Contour
7.6
Good
43 reviews

Comfort

7.3

Boarding

7.6

Food

6.9

Overall

7.6

Entertainment

6.1

Crew

7.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Oct 2025

CLT - PAH

The steward on my flight from Charlotte to Paducah was the kindest person I’ve ever met. He made everyone feel comfortable, and even laugh a little. Not to mention his hair was top tier. He deserves a raise. Xoxo
Southern / Mokulele
6.8
Okay
30 reviews
Contour
7.6
Good
43 reviews

Comfort

7.3

Boarding

7.6

Food

6.9

Overall

7.6

Entertainment

6.1

Crew

7.9

Reviews

1 / 2
10.0
Excellent

Anonymous,Oct 2025

CLT - PAH

The steward on my flight from Charlotte to Paducah was the kindest person I’ve ever met. He made everyone feel comfortable, and even laugh a little. Not to mention his hair was top tier. He deserves a raise. Xoxo

Related info for your journey

Find useful and relevant information for your journey from Chicago to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Chicago to Illinois?

    Departing from Chicago to Illinois will take you 1h 20m. Chicago and Illinois are separated by a distance of 186 mi. All flights are typically nonstop.

  • What are the cheapest airlines to fly from Chicago to Illinois one-way?

    The cheapest airline one-way is Contour, with whom users have recently found tickets for as low as $64. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Chicago to Illinois for a low price.

  • What are the most popular routes from Chicago to Illinois?

    Most travelers choose Chicago O'Hare Intl - Lambert-St Louis, Chicago Midway - Lambert-St Louis or Chicago O'Hare Intl - Decatur Arpt when deciding on the best route from Chicago to Illinois.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago 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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Alternative routes for Chicago to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 2 airlines flying from Chicago to Illinois

Discover the top 2 airlines that operate flights from Chicago 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 2,558,603 searches. Data last updated December 10, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$437FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$363Average$451FlexibilityNo cancel feeOn-time71%

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