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Illinois

$49+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ORD
Nov 27 — Dec 41
Thu 11/27
Thu 12/4
1 adult, Economy
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Cheap flight deals from Indiana to Illinois

Keep the following information in mind while searching for Indiana to Illinois flight deals. Data was last updated October 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$97
(American Airlines)

One-way from

$49
(Southwest)

Popular in

March

Cheapest in

August

Average price

$266

Good round-trip deal

$283 or less

Good one-way deal

$163 or less
Provider with most accurate pricing for Indianapolis-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Indianapolis-Chicago (CHI) flights.
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From Indiana to Illinois
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One-way flight from Indiana to Illinois
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Highest demand for flights based on searches. 6% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a round-trip flight from Indiana to Illinois.
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Price to beat on a one-way flight from Indiana to Illinois.
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Find 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 October 28, 2025.

This American Airlines deal was found by Cheapflights users on 10/28. 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 12/101:02 pmSDF - ORD
Nonstop1h 42mAmerican Airlines
Wed 12/175:36 pmORD - SDF
Nonstop1h 28mAmerican Airlines
Deal found 10/28$97
This Southwest deal was found by Cheapflights users on 10/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/157:05 pmSDF - MDW
Nonstop1h 15mSouthwest
Wed 12/178:50 pmMDW - SDF
Nonstop1h 15mSouthwest
Deal found 10/28$97
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Thu 12/46:30 amSDF - ORD
Nonstop1h 44mAmerican Airlines
Mon 12/87:26 pmORD - SDF
Nonstop1h 34mAmerican Airlines
Deal found 10/28$99
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1210:24 amCVG - STL
1 stop23h 43mFrontier
Thu 11/137:45 pmSTL - CVG
1 stop23h 35mFrontier
Deal found 10/28$121
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Sat 12/612:20 pmSDF - ORD
Nonstop1h 38mUnited Airlines
Mon 12/87:55 pmORD - SDF
Nonstop1h 34mUnited Airlines
Deal found 10/28$134
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Wed 12/248:10 pmORD - STL
Nonstop1h 33mUnited Airlines
Sat 1/104:49 pmSTL - ORD
Nonstop1h 43mUnited Airlines
Deal found 10/28$134
This Southwest deal was found by Cheapflights users on 10/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/245:15 pmMDW - STL
Nonstop1h 15mSouthwest
Sat 1/107:40 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 10/27$136
This Southwest deal was found by Cheapflights users on 10/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/49:05 pmMDW - STL
Nonstop1h 15mSouthwest
Mon 12/87:30 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 10/26$137
This American Airlines deal was found by Cheapflights users on 10/27. 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 12/36:30 amSDF - ORD
Nonstop1h 44mAmerican Airlines
Tue 12/98:20 pmORD - SDF
Nonstop1h 36mAmerican Airlines
Deal found 10/27$137
This Southwest deal was found by Cheapflights users on 10/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/41:50 pmSDF - MDW
Nonstop1h 15mSouthwest
Mon 12/88:50 pmMDW - SDF
Nonstop1h 15mSouthwest
Deal found 10/27$137
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Thu 12/111:22 pmORD - STL
Nonstop1h 28mAmerican Airlines
Thu 12/188:01 pmSTL - ORD
Nonstop1h 29mAmerican Airlines
Deal found 10/27$137
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/236:39 pmIND - ORD
1 stop24h 54mFrontier
Tue 12/306:00 amORD - IND
1 stop10h 44mFrontier
Deal found 10/27$138

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 October 28, 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

LouisvilleChicago

SDF - MDW

SDFMDW

Louisville Intl

Thu 12/4

1:10 pm-7:20 pm

1 stop7h 10m

Chicago Midway

Mon 12/8

8:50 pm-11:05 pm

Nonstop1h 15m

$107

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Wed 11/12

10:24 am-9:07 am

1 stop23h 43m

Lambert-St Louis

Thu 11/13

7:45 pm-8:20 pm

1 stop23h 35m

$121

LouisvilleChicago

SDF - MDW

SDFMDW

Louisville Intl

Mon 12/15

5:30 am-1:00 pm

2 stops8h 30m

Chicago Midway

Wed 12/17

12:25 pm-5:10 pm

1 stop3h 45m

$122

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 12/24

8:10 pm-9:43 pm

Nonstop1h 33m

Lambert-St Louis

Sat 1/10

4:49 pm-6:32 pm

Nonstop1h 43m

$134

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Thu 12/4

11:25 am-12:35 pm

Nonstop1h 10m

Lambert-St Louis

Mon 12/8

10:15 am-11:25 am

Nonstop1h 10m

$137

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Thu 12/11

7:30 am-8:14 am

Nonstop1h 44m

Chicago O'Hare Intl

Thu 12/18

10:43 am-1:18 pm

Nonstop1h 35m

$139

CincinnatiSt. Louis

CVG - STL

CVGSTL

Cincinnati Cinci./N. Kentucky

Thu 12/4

5:05 am-10:33 pm

1 stop18h 28m

Lambert-St Louis

Sat 12/6

3:30 pm-8:39 am

1 stop16h 09m

$141

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 12/24

5:15 pm-6:30 pm

Nonstop1h 15m

Lambert-St Louis

Sat 1/10

1:40 pm-8:25 pm

1 stop6h 45m

$146

LouisvilleChicago

SDF - MDW

SDFMDW

Louisville Intl

Wed 12/3

5:30 am-10:10 am

1 stop5h 40m

Chicago Midway

Tue 12/9

2:25 pm-4:35 pm

Nonstop1h 10m

$147

LouisvilleChicago

SDF - MDW

SDFMDW

Louisville Intl

Tue 1/6

2:30 pm-7:00 pm

1 stop5h 30m

Chicago Midway

Thu 1/8

7:55 pm-10:10 pm

Nonstop1h 15m

$147

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

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, August is the cheapest month in which you can book a flight from Indiana to Illinois (average of $135). Flying from Indiana to Illinois in April is currently the most expensive (average of $191). 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 October 28, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 20% 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. Tuesday 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 October 28, 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
4,240 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,001 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,032 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southern / Mokulele
6.2
Okay
26 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Crew

8.6

Overall

8.0

Comfort

8.0

Food

7.0

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 $134, Southwest can have you in Illinois from Indiana in 1h 33m. The distance from Indiana to Illinois is about 258 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?

    $49 is the cheapest one-way deal found within the past few days, from Southwest. You may also be able to find cheap deals on United Airlines and Frontier, with prices starting from $49 and $95, 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, August is the cheapest month in which you can book a flight from Indiana to Illinois (average of $135). Flying from Indiana to Illinois in April is currently the most expensive (average of $191). 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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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 October 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$140Average$309FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$160Average$274FlexibilityNo cancel feeOn-time69%
Southern / MokuleleCheapest$189Average$302FlexibilityNo cancel feeOn-timeN/A

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