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$43+ Cheap flights from Illinois to Chicago (CHI)

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CHI
Jan 28 — Feb 41
Wed 1/28
Wed 2/4
1 adult, Economy
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Cheap flight deals from Illinois to Chicago

Cheapest flights from Illinois to Chicago
Explore the most affordable flight options available from Illinois to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 29, 2025.

This United Airlines deal was found by Cheapflights users on 12/26. 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.
Fri 12/267:09 pmDEC - ORD
Nonstop1h 16mUnited Airlines
Tue 12/307:45 amORD - DEC
Nonstop1h 20mUnited Airlines
Deal found 12/26$199
This American Airlines deal was found by Cheapflights users on 12/29. 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 12/315:00 amSTL - ORD
1 stop28h 21mAmerican Airlines
Thu 1/112:10 pmORD - STL
Nonstop1h 26mAmerican Airlines
Deal found 12/29$286
This United Airlines deal was found by Cheapflights users on 12/26. 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 12/2710:47 amMLI - ORD
Nonstop1h 18mUnited Airlines
Fri 1/27:58 pmORD - MLI
Nonstop1h 23mUnited Airlines
Deal found 12/26$289
This United Airlines deal was found by Cheapflights users on 12/28. 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 12/306:30 amPIA - ORD
Nonstop1h 31mUnited Airlines
Mon 1/51:00 pmORD - PIA
Nonstop1h 08mUnited Airlines
Deal found 12/28$312
This United Airlines deal was found by Cheapflights users on 12/26. 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 12/291:00 pmMLI - ORD
Nonstop1h 18mUnited Airlines
Sat 1/108:13 pmORD - MLI
Nonstop1h 23mUnited Airlines
Deal found 12/26$334
This American Airlines deal was found by Cheapflights users on 12/26. 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.
Fri 12/267:47 pmMLI - ORD
Nonstop1h 25mAmerican Airlines
Mon 12/291:03 pmORD - MLI
Nonstop1h 02mAmerican Airlines
Deal found 12/26$339
This United Airlines deal was found by Cheapflights users on 12/26. 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 12/305:33 pmMLI - ORD
Nonstop1h 17mUnited Airlines
Sat 1/37:58 pmORD - MLI
Nonstop1h 23mUnited Airlines
Deal found 12/26$349
This American Airlines deal was found by Cheapflights users on 12/26. 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.
Sat 12/274:51 pmEVV - ORD
Nonstop1h 55mAmerican Airlines
Fri 1/302:55 pmORD - EVV
Nonstop1h 23mAmerican Airlines
Deal found 12/26$384
This United Airlines deal was found by Cheapflights users on 12/27. 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 12/2710:47 amMLI - ORD
Nonstop1h 18mUnited Airlines
Sun 12/283:45 pmORD - MLI
Nonstop1h 09mUnited Airlines
Deal found 12/27$399
This American Airlines deal was found by Cheapflights users on 12/27. 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 12/317:00 amEVV - ORD
Nonstop1h 41mAmerican Airlines
Fri 1/23:05 pmORD - EVV
Nonstop1h 16mAmerican Airlines
Deal found 12/27$414
This American Airlines deal was found by Cheapflights users on 12/28. 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 12/312:06 pmSTL - ORD
Nonstop1h 29mAmerican Airlines
Wed 12/315:28 pmORD - STL
1 stop26h 02mAmerican Airlines
Deal found 12/28$435
This American Airlines deal was found by Cheapflights users on 12/25. 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.
Sat 12/274:51 pmEVV - ORD
Nonstop1h 55mAmerican Airlines
Sun 12/283:05 pmORD - EVV
Nonstop1h 16mAmerican Airlines
Deal found 12/25$436

Find flight deals from Illinois to Chicago

Keep the following information in mind while searching for Illinois to Chicago flight deals. Data was last updated December 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$88
(Booking.com)

One-way from

$43
(Booking.com)

Popular in

July

Cheapest in

January

Average price

$186

Good round-trip deal

$108 or less

Good one-way deal

$35 or less
Provider with most accurate pricing for Moline Quad-City-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Moline Quad-City-Chicago (CHI) flights.
Search Deals
From Illinois to Chicago (CHI)
Search Deals
One-way flight from Illinois to Chicago (CHI)
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($4 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Illinois to Chicago (CHI).
Search Deals
Price to beat on a one-way flight from Illinois to Chicago (CHI).
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Chicago 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 29, 2025.
Use the filters below to find and compare flights from Illinois to Chicago that are best for you.

Fly from

Illinois

Fly to

Chicago

Route

Depart

Return

Price

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Thu 3/12

5:30 pm-6:50 pm

Nonstop1h 20m

Chicago O'Hare Intl

Thu 3/19

2:40 pm-4:00 pm

Nonstop1h 20m

$88

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Mon 1/12

9:50 am-11:10 am

Nonstop1h 20m

Chicago O'Hare Intl

Fri 1/16

7:30 pm-8:50 pm

Nonstop1h 20m

$88

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Mon 1/5

9:50 am-11:10 am

Nonstop1h 20m

Chicago O'Hare Intl

Thu 1/8

2:40 pm-4:00 pm

Nonstop1h 20m

$88

BurlingtonChicago

BRL - ORD

BRLORD

Burlington

Thu 3/26

4:25 pm-5:45 pm

Nonstop1h 20m

Chicago O'Hare Intl

Tue 3/31

6:25 pm-7:45 pm

Nonstop1h 20m

$88

BurlingtonChicago

BRL - ORD

BRLORD

Burlington

Mon 1/12

4:25 pm-5:45 pm

Nonstop1h 20m

Chicago O'Hare Intl

Fri 1/16

6:25 pm-7:45 pm

Nonstop1h 20m

$88

QuincyChicago

UIN - ORD

UINORD

Quincy Regional

Thu 2/19

5:30 pm-6:50 pm

Nonstop1h 20m

Chicago O'Hare Intl

Sun 2/22

7:30 pm-8:50 pm

Nonstop1h 20m

$98

BurlingtonChicago

BRL - ORD

BRLORD

Burlington

Sat 1/17

9:00 am-10:10 am

Nonstop1h 10m

Chicago O'Hare Intl

Sun 1/18

6:25 pm-7:45 pm

Nonstop1h 20m

$98

BurlingtonChicago

BRL - ORD

BRLORD

Burlington

Mon 2/16

4:25 pm-5:45 pm

Nonstop1h 20m

Chicago O'Hare Intl

Wed 2/25

6:25 pm-7:45 pm

Nonstop1h 20m

$98

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 1/28

5:42 pm-10:41 am

1 stop16h 59m

Chicago O'Hare Intl

Wed 2/4

12:44 pm-11:33 pm

1 stop10h 49m

$146

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Sat 1/17

5:50 pm-7:00 pm

Nonstop1h 10m

Chicago Midway

Mon 1/19

8:15 am-9:35 am

Nonstop1h 20m

$157

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

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

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

What is the cheapest month to book a flight from Illinois to Chicago?

Currently, May is the cheapest month in which you can book a flight from Illinois to Chicago (average of $158). Flying from Illinois to Chicago in April is currently the most expensive (average of $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.

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

Find hourly flight availability from Illinois to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 29, 2025.

When flying from Illinois to Chicago, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 17% versus a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Illinois to Chicago. Price data was last updated on December 27, 2025.

Travelers seeking maximum savings on their Illinois to Chicago flight should consider departing on Monday evenings 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 Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated December 29, 2025.
Get a feel of what it's like to fly with Contour, United Airlines, and American Airlines from Illinois to Chicago by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Contour
7.6
Good
43 reviews

Boarding

7.6

Entertainment

6.1

Overall

7.6

Food

6.9

Crew

7.9

Comfort

7.3

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

Boarding

7.6

Entertainment

6.1

Overall

7.6

Food

6.9

Crew

7.9

Comfort

7.3

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
9,119 reviews
Contour
7.6
Good
43 reviews

Boarding

7.6

Entertainment

6.1

Overall

7.6

Food

6.9

Crew

7.9

Comfort

7.3

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
American Airlines
7.2
Good
11,072 reviews
Contour
7.6
Good
43 reviews

Boarding

7.6

Entertainment

6.1

Overall

7.6

Food

6.9

Crew

7.9

Comfort

7.3

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 Illinois to Chicago. 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 Illinois to Chicago?

    Airlines like Contour, Southwest, and United Airlines fly from Illinois to Chicago in about 1h 10m. The time it takes to get you to your destination is usually consistent. There are 251 mi between Illinois and Chicago. Most flights are nonstop.

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

    $53 is the cheapest one-way deal found within the past few days, from Contour. You may also be able to find cheap deals on Southern / Mokulele and United Airlines, with prices starting from $54 and $97, respectively.

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

    The most popular flight routes from Illinois to Chicago are Lambert-St Louis - Chicago O'Hare Intl, Lambert-St Louis - Chicago Midway and Moline Quad-City - Chicago O'Hare Intl.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Chicago 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 Illinois to Chicago?

    Currently, May is the cheapest month in which you can book a flight from Illinois to Chicago (average of $158). Flying from Illinois to Chicago in April is currently the most expensive (average of $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

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
Merrillville
Hammond
Porter
Benton Harbor

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Alternative routes for Illinois to Chicago

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

Discover the top 2 airlines that operate flights from Illinois to Chicago. 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 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$267FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$328FlexibilityNo cancel feeOn-time71%

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