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Illinois

$59+ Cheap flights from Indiana 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ORD
Jan 20 — Jan 271
Tue 1/20
Tue 1/27
1 adult, Economy
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Cheap flight deals from Indiana to Illinois

Cheapest flights from Indiana to Illinois
Explore the most affordable flight options available from Indiana to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 21, 2025.

This United Airlines deal was found by Cheapflights users on 12/19. 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.
Wed 12/315:40 amSDF - ORD
Nonstop1h 44mUnited Airlines
Thu 1/12:51 pmORD - SDF
Nonstop1h 37mUnited Airlines
Deal found 12/19$175
This American Airlines deal was found by Cheapflights users on 12/20. 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 12/317:14 amORD - STL
Nonstop1h 34mAmerican Airlines
Tue 1/136:46 pmSTL - ORD
Nonstop1h 34mAmerican Airlines
Deal found 12/20$188
This Delta deal was found by Cheapflights users on 12/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/315:31 pmORD - STL
1 stop6h 07mDelta
Tue 1/1312:00 pmSTL - ORD
1 stop7h 35mDelta
Deal found 12/20$204
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Wed 12/247:00 amCVG - ORD
Nonstop1h 33mUnited Airlines
Wed 12/3110:54 amORD - CVG
Nonstop1h 23mUnited Airlines
Deal found 12/17$211
This American Airlines deal was found by Cheapflights users on 12/19. 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 12/316:27 amSDF - ORD
Nonstop1h 39mAmerican Airlines
Thu 1/18:03 amORD - SDF
1 stop6h 09mAmerican Airlines
Deal found 12/19$215
This American Airlines deal was found by Cheapflights users on 12/18. 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
Thu 1/18:01 pmSTL - ORD
Nonstop1h 29mAmerican Airlines
Deal found 12/18$215
This United Airlines deal was found by Cheapflights users on 12/20. 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.
Wed 12/311:44 pmFWA - ORD
Nonstop1h 26mUnited Airlines
Sun 1/41:55 pmORD - FWA
Nonstop1h 15mUnited Airlines
Deal found 12/20$222
This United Airlines deal was found by Cheapflights users on 12/19. 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 12/294:45 pmFWA - ORD
Nonstop1h 25mUnited Airlines
Wed 1/71:55 pmORD - FWA
Nonstop1h 15mUnited Airlines
Deal found 12/19$224
This Delta deal was found by Cheapflights users on 12/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:06 pmCVG - MDW
1 stop5h 16mDelta
Thu 1/15:59 pmMDW - CVG
1 stop4h 32mDelta
Deal found 12/20$231
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/242:51 pmCVG - ORD
1 stop6h 45mDelta
Wed 12/316:02 pmORD - CVG
1 stop3h 55mDelta
Deal found 12/17$231
This Frontier deal was found by Cheapflights users on 12/18. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3111:23 amORD - STL
1 stop11h 10mFrontier
Thu 1/110:42 amSTL - ORD
1 stop7h 51mFrontier
Deal found 12/18$233
This Orbitz deal was found by Cheapflights users on 12/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/232:50 pmCVG - ORD
1 stop8h 34mFrontier
Fri 1/26:00 amORD - CVG
1 stop11h 14mFrontier
Deal found 12/18$248

Find flight deals from Indiana to Illinois

Keep the following information in mind while searching for Indiana to Illinois flight deals. Data was last updated December 21, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$122
(Kiwi.com)

One-way from

$59
(Mytrip)

Popular in

November

Cheapest in

August

Average price

$244

Good round-trip deal

$254 or less

Good one-way deal

$194 or less
Provider with most accurate pricing for Indianapolis-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Indianapolis-Chicago (CHI) flights.
Search Deals
From Indiana to Illinois
Search Deals
One-way flight from Indiana to Illinois
Search Deals
Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 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 Indiana to Illinois.
Search Deals
Price to beat on a one-way flight from Indiana to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Indiana 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 21, 2025.
Use the filters below to find and compare flights from Indiana to Illinois that are best for you.

Fly from

Indiana

Fly to

Illinois

Route

Depart

Return

Price

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/22

11:51 am-11:33 pm

1 stop11h 42m

Lambert-St Louis

Mon 1/26

8:22 pm-1:58 pm

1 stop17h 36m

$146

IndianapolisChicago

IND - ORD

INDORD

Indianapolis

Wed 1/14

5:10 am-9:03 pm

1 stop16h 53m

Chicago O'Hare Intl

Fri 1/16

8:43 pm-6:23 pm

2 stops20h 40m

$152

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Mon 1/12

2:05 pm-2:49 pm

Nonstop1h 44m

Chicago O'Hare Intl

Tue 1/13

7:52 pm-10:30 pm

Nonstop1h 38m

$152

LouisvilleChicago

SDF - MDW

SDFMDW

Louisville Intl

Mon 1/12

6:45 am-7:10 am

Nonstop1h 25m

Chicago Midway

Tue 1/13

7:55 pm-10:10 pm

Nonstop1h 15m

$152

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 1/13

7:45 pm-9:00 pm

Nonstop1h 15m

Lambert-St Louis

Wed 1/14

1:10 pm-2:15 pm

Nonstop1h 05m

$153

CincinnatiChicago

CVG - ORD

CVGORD

Cincinnati Cinci./N. Kentucky

Thu 1/15

8:30 am-8:57 pm

1 stop13h 27m

Chicago O'Hare Intl

Thu 1/22

3:55 pm-10:55 pm

1 stop30h 00m

$154

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 1/13

1:20 pm-6:51 am

1 stop17h 31m

Lambert-St Louis

Wed 1/14

8:32 pm-11:22 am

2 stops14h 50m

$159

CincinnatiChicago

CVG - ORD

CVGORD

Cincinnati Cinci./N. Kentucky

Sun 3/1

9:27 pm-9:34 pm

1 stop25h 07m

Chicago O'Hare Intl

Wed 3/4

7:13 pm-4:37 pm

1 stop20h 24m

$159

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Mon 1/12

9:05 pm-10:34 pm

1 stop26h 29m

Lambert-St Louis

Wed 1/21

3:46 pm-8:48 pm

1 stop28h 02m

$160

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 1/15

5:15 am-10:34 pm

2 stops17h 19m

Lambert-St Louis

Mon 1/19

8:32 pm-6:27 pm

1 stop21h 55m

$160

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/20

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

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

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

Currently, February is the cheapest month in which you can book a flight from Indiana to Illinois (average of $127). Flying from Indiana to Illinois in November is currently the most expensive (average of $194). 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 IN to IL?

Find hourly flight availability from Indiana 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 21, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 28% on flights from Indiana to Illinois by exploring options for tickets in the morning.

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

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

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

Weekly flight availability from Indiana to Illinois

Explore weekly flight availability from Indiana to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated December 21, 2025.

The most flights from USIN to USIL are scheduled on a Monday (64 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (26 on average).

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 21, 2025.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from Indiana to Illinois to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
8.0
Very good
4,258 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,097 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,050 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southern / Mokulele
6.8
Okay
30 reviews
Southwest
8.0
Very good
4,258 reviews

Crew

8.6

Boarding

8.1

Food

7.0

Overall

8.0

Entertainment

7.5

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

Find useful and relevant information for your journey from Indiana 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 Indiana to Illinois?

    For as low as $152, Frontier can have you in Illinois from Indiana in 1h 44m. The distance from Indiana to Illinois is about 287 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    $88 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on Southern / Mokulele and United Airlines, with prices starting from $89 and $98, respectively.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Indiana to Illinois (average of $127). Flying from Indiana to Illinois in November is currently the most expensive (average of $194). 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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Alternative routes for Indiana to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Indiana to Illinois

Discover the top 3 airlines that operate flights from Indiana 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 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$137Average$312FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$160Average$249FlexibilityNo cancel feeOn-time69%
Southern / MokuleleCheapest$189Average$302FlexibilityNo cancel feeOn-timeN/A

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