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$49+ Cheap flights from Illinois to Indiana

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 10/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — IND
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Illinois to Indiana

Keep the following information in mind while searching for Illinois to Indiana flight deals. Data was last updated September 17, 2025.

Round-trip from

$97
(Southwest)

One-way from

$49
(Southwest)

Popular in

March

Cheapest in

December

Average price

$337

Good round-trip deal

$194 or less

Good one-way deal

$97 or less
From Illinois to Indiana
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One-way flight from Illinois to Indiana
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Highest demand for flights based on searches. 12% potential increase in price ($39 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 September 2025
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Price to beat on a round-trip flight from Illinois to Indiana.
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Price to beat on a one-way flight from Illinois to Indiana.
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Find flight deals from Illinois to Indiana

Cheapest flights from Illinois to Indiana
Explore the most affordable flight options available from Illinois to Indiana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This American Airlines deal was found by Cheapflights users on 9/15. 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 10/98:28 pmORD - SDF
Nonstop1h 35mAmerican Airlines
Wed 10/155:53 pmSDF - ORD
Nonstop1h 36mAmerican Airlines
Deal found 9/15$97
This Southwest deal was found by Cheapflights users on 9/15. 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 11/1710:00 amMDW - SDF
Nonstop1h 25mSouthwest
Tue 11/186:45 amSDF - MDW
Nonstop1h 15mSouthwest
Deal found 9/15$97
This Southwest deal was found by Cheapflights users on 9/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/235:40 amSTL - MDW
Nonstop1h 10mSouthwest
Mon 10/277:40 amMDW - STL
Nonstop1h 10mSouthwest
Deal found 9/17$97
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/155:00 amSTL - ORD
Nonstop1h 30mUnited Airlines
Wed 10/229:25 amORD - STL
Nonstop1h 24mUnited Airlines
Deal found 9/16$97
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/306:59 amORD - SDF
Nonstop1h 24mAmerican Airlines
Thu 11/612:43 pmSDF - ORD
Nonstop1h 38mAmerican Airlines
Deal found 9/15$98
This American Airlines deal was found by Cheapflights users on 9/15. 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 10/237:16 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Mon 10/2710:34 pmORD - STL
Nonstop1h 20mAmerican Airlines
Deal found 9/15$98
This Southwest deal was found by Cheapflights users on 9/15. 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 11/52:30 pmMDW - SDF
2 stops7h 20mSouthwest
Sat 11/84:25 pmSDF - MDW
Nonstop1h 15mSouthwest
Deal found 9/15$112
This Southwest deal was found by Cheapflights users on 9/15. 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 11/510:15 amSTL - MDW
Nonstop1h 10mSouthwest
Sat 11/159:45 amMDW - STL
2 stops7h 10mSouthwest
Deal found 9/15$112
This United Airlines deal was found by Cheapflights users on 9/16. 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 10/1110:50 amORD - SDF
Nonstop1h 31mUnited Airlines
Mon 10/137:00 amSDF - ORD
Nonstop1h 38mUnited Airlines
Deal found 9/16$114
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 10/165:00 amSTL - ORD
Nonstop1h 30mUnited Airlines
Tue 11/112:21 pmORD - STL
Nonstop1h 26mUnited Airlines
Deal found 9/16$114
This Southwest deal was found by Cheapflights users on 9/15. 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.
Tue 10/141:50 pmORD - SDF
1 stop6h 50mSouthwest
Tue 10/215:30 amSDF - ORD
1 stop7h 20mSouthwest
Deal found 9/15$117
This Southwest deal was found by Cheapflights users on 9/16. 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 11/135:15 pmMDW - SDF
1 stop6h 00mSouthwest
Thu 11/203:20 pmSDF - MDW
1 stop6h 45mSouthwest
Deal found 9/16$117

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Indiana 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 September 17, 2025.
Use the filters below to find and compare flights from Illinois to Indiana that are best for you.

Fly from

Illinois

Fly to

Indiana

Route

Depart

Return

Price

ChicagoLouisville

MDW - SDF

MDWSDF

Chicago Midway

Thu 11/6

2:40 pm-4:50 pm

Nonstop1h 10m

Louisville Intl

Tue 11/11

6:45 am-7:00 am

Nonstop1h 15m

$97

ChicagoLouisville

ORD - SDF

ORDSDF

Chicago O'Hare Intl

Wed 10/15

4:00 pm-6:33 pm

Nonstop1h 33m

Louisville Intl

Wed 10/22

10:55 am-11:33 am

Nonstop1h 38m

$97

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Thu 11/20

7:00 am-8:10 am

Nonstop1h 10m

Chicago Midway

Thu 11/20

11:25 am-12:35 pm

Nonstop1h 10m

$97

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 10/15

5:00 am-6:30 am

Nonstop1h 30m

Chicago O'Hare Intl

Wed 10/22

9:25 am-10:49 am

Nonstop1h 24m

$97

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Thu 10/23

5:40 am-6:50 am

Nonstop1h 10m

Chicago Midway

Mon 10/27

7:40 am-8:50 am

Nonstop1h 10m

$97

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 10/15

5:00 am-6:30 am

Nonstop1h 30m

Chicago O'Hare Intl

Wed 10/15

1:03 pm-2:27 pm

Nonstop1h 24m

$97

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Wed 10/15

12:25 pm-1:50 pm

Nonstop1h 25m

Chicago O'Hare Intl

Thu 10/16

2:20 pm-3:44 pm

Nonstop1h 24m

$97

St. LouisChicago

STL - ORD

STLORD

Lambert-St Louis

Tue 10/14

6:30 am-8:00 am

Nonstop1h 30m

Chicago O'Hare Intl

Tue 10/21

9:25 am-10:49 am

Nonstop1h 24m

$97

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Mon 10/20

5:40 am-6:50 am

Nonstop1h 10m

Chicago Midway

Mon 10/20

6:00 pm-9:30 pm

1 stop3h 30m

$107

St. LouisChicago

STL - MDW

STLMDW

Lambert-St Louis

Wed 10/15

6:30 am-7:40 am

Nonstop1h 10m

Chicago Midway

Wed 10/15

10:05 am-3:00 pm

1 stop4h 55m

$107

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

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

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

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

Currently, August is the cheapest month in which you can book a flight from Illinois to Indiana (average of $286). Flying from Illinois to Indiana in March is currently the most expensive (average of $360). 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 IN?

Find hourly flight availability from Illinois to Indiana. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Indiana as you normally would.

Weekly flight availability from Illinois to Indiana

Explore weekly flight availability from Illinois to Indiana. 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 September 17, 2025.

The most flights from USIL to USIN are scheduled on a Monday (69 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (50 on average).

Reviews of airlines servicing Indiana

Get insights into the airlines that provide service to Indiana. 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 Indiana. Reviews last updated September 17, 2025.
Read reviews from past customers who have flown United Airlines and American Airlines from Illinois to Indiana. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,926 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,926 reviews

Comfort

7.3

Crew

8.1

Food

6.6

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Related info for your journey

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

    Southwest, United Airlines, and Frontier can get you from Illinois to Indiana in just under 1h 10m. Your travel time can differ by up to 7h 04m. There are 271 mi between Illinois and Indiana. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    One-way options have recently been found by users for as low as $49 on Southwest. Other airlines that offer cheap prices include United Airlines from $49 and American Airlines from $49 one-way.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Illinois to Indiana (average of $286). Flying from Illinois to Indiana in March is currently the most expensive (average of $360). 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 Illinois to Indiana

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

Discover the top 3 airlines that operate flights from Illinois to Indiana. 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$310FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$310FlexibilityNo cancel feeOn-time71%
Southern / MokuleleCheapest$189Average$233FlexibilityNo cancel feeOn-timeN/A

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