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Illinois

$39+ 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 8/5. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ORD
Apr 27 — May 41
Sun 4/27
Sun 5/4
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 April 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$91
(American Airlines)

One-way from

$39
(Southwest)

Popular in

March

Cheapest in

December

Average price

$295

Good round-trip deal

$278 or less

Good one-way deal

$89 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. 10% potential increase in price ($29 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 April 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 April 22, 2025.

This Southwest deal was found by Cheapflights users on 4/22. 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 7/236:00 amMDW - STL
1 stop4h 50mSouthwest
Tue 7/299:25 amSTL - MDW
1 stop4h 10mSouthwest
Deal found 4/22$97
This American Airlines deal was found by Cheapflights users on 4/21. 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.
Mon 5/1910:30 pmORD - STL
Nonstop1h 21mAmerican Airlines
Mon 5/265:00 amSTL - ORD
Nonstop1h 19mAmerican Airlines
Deal found 4/21$97
This Southwest deal was found by Cheapflights users on 4/22. 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 9/178:15 amIND - ORD
1 stop4h 35mSouthwest
Thu 9/251:50 pmORD - IND
1 stop8h 30mSouthwest
Deal found 4/22$102
This Southwest deal was found by Cheapflights users on 4/22. 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 5/205:10 pmIND - MDW
1 stop5h 40mSouthwest
Tue 5/278:15 amMDW - IND
1 stop7h 05mSouthwest
Deal found 4/22$102
This Southwest deal was found by Cheapflights users on 4/22. 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 5/217:30 amORD - STL
2 stops10h 50mSouthwest
Wed 5/285:20 amSTL - ORD
1 stop5h 25mSouthwest
Deal found 4/22$108
This American Airlines deal was found by Cheapflights users on 4/22. 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 6/72:43 pmCVG - ORD
Nonstop1h 30mAmerican Airlines
Tue 6/108:30 pmORD - CVG
Nonstop1h 38mAmerican Airlines
Deal found 4/22$121
This Southwest deal was found by Cheapflights users on 4/22. 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.
Sat 6/76:40 pmCVG - MDW
Nonstop1h 10mSouthwest
Tue 6/106:10 pmMDW - CVG
1 stop4h 10mSouthwest
Deal found 4/22$124
This United Airlines deal was found by Cheapflights users on 4/21. 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 5/276:00 pmSDF - ORD
Nonstop1h 42mUnited Airlines
Wed 5/287:40 pmORD - SDF
Nonstop1h 34mUnited Airlines
Deal found 4/21$125
This United Airlines deal was found by Cheapflights users on 4/22. 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 5/222:10 pmCVG - ORD
Nonstop1h 44mUnited Airlines
Thu 5/294:32 pmORD - CVG
Nonstop1h 27mUnited Airlines
Deal found 4/22$137
This Southwest deal was found by Cheapflights users on 4/21. 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 5/296:40 amSDF - MDW
Nonstop1h 15mSouthwest
Fri 5/302:05 pmMDW - SDF
Nonstop1h 10mSouthwest
Deal found 4/21$138
This Southern / Mokulele deal was found by Cheapflights users on 4/22. 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 Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/238:25 amORD - STL
1 stop11h 45mSouthern / Mokulele
Mon 5/265:15 pmSTL - ORD
1 stop14h 25mSouthern / Mokulele
Deal found 4/22$140
This Vliegwinkel deal was found by Cheapflights users on 4/22. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1510:49 amCVG - ORD
Nonstop1h 26mAlaska Airlines
Mon 5/196:09 pmORD - CVG
Nonstop1h 31mAlaska Airlines
Deal found 4/22$148

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 April 22, 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

Tue 5/13

1:59 pm-3:21 pm

Nonstop1h 22m

Lambert-St Louis

Tue 5/13

7:30 pm-8:50 pm

Nonstop1h 20m

$91

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Wed 7/23

6:00 am-10:50 am

1 stop4h 50m

Lambert-St Louis

Tue 7/29

9:25 am-1:35 pm

1 stop4h 10m

$97

IndianapolisChicago

IND - ORD

INDORD

Indianapolis

Wed 9/17

8:15 am-11:50 am

1 stop4h 35m

Chicago O'Hare Intl

Thu 9/25

1:50 pm-11:20 pm

1 stop8h 30m

$102

IndianapolisChicago

IND - MDW

INDMDW

Indianapolis

Tue 5/20

5:10 pm-9:50 pm

1 stop5h 40m

Chicago Midway

Tue 5/27

8:15 am-4:20 pm

1 stop7h 05m

$102

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 5/21

7:30 am-6:20 pm

2 stops10h 50m

Lambert-St Louis

Wed 5/28

5:20 am-10:45 am

1 stop5h 25m

$108

CincinnatiChicago

CVG - ORD

CVGORD

Cincinnati Cinci./N. Kentucky

Sat 6/7

2:43 pm-3:13 pm

Nonstop1h 30m

Chicago O'Hare Intl

Tue 6/10

8:30 pm-11:08 pm

Nonstop1h 38m

$121

CincinnatiChicago

CVG - MDW

CVGMDW

Cincinnati Cinci./N. Kentucky

Sat 6/7

6:40 pm-6:50 pm

Nonstop1h 10m

Chicago Midway

Tue 6/10

6:10 pm-11:20 pm

1 stop4h 10m

$124

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Tue 5/27

6:00 pm-6:42 pm

Nonstop1h 42m

Chicago O'Hare Intl

Wed 5/28

7:40 pm-10:14 pm

Nonstop1h 34m

$125

CincinnatiChicago

CVG - ORD

CVGORD

Cincinnati Cinci./N. Kentucky

Thu 5/22

2:10 pm-2:54 pm

Nonstop1h 44m

Chicago O'Hare Intl

Thu 5/29

4:32 pm-6:59 pm

Nonstop1h 27m

$137

LouisvilleChicago

SDF - MDW

SDFMDW

Louisville Intl

Thu 5/29

6:40 am-6:55 am

Nonstop1h 15m

Chicago Midway

Fri 5/30

2:05 pm-4:15 pm

Nonstop1h 10m

$138

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

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 $245). Flying from Indiana to Illinois in March is currently the most expensive (average of $321). 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 April 22, 2025.

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

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 April 22, 2025.

The most flights from USIN to USIL are scheduled on a Monday (71 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 April 22, 2025.
To help decide which airline to fly from Indiana to Illinois, see what other customers have to say about Alaska Airlines, Southwest and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,911 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,911 reviews
Alaska Airlines
8.0
Very good
9,911 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
9,911 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,911 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,683 reviews
Alaska Airlines
8.0
Very good
9,911 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Allegiant Air
7.3
Good
734 reviews
Alaska Airlines
8.0
Very good
9,911 reviews

Entertainment

7.1

Crew

8.5

Food

7.1

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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.

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

    $39 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 American Airlines, with prices starting from $39 and $46, 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 $245). Flying from Indiana to Illinois in March is currently the most expensive (average of $321). 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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$281FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$319FlexibilityNo cancel feeOn-time71%
Southern / MokuleleCheapest$189Average$228FlexibilityNo cancel feeOn-timeN/A

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