$64+ 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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ORD
Feb 20 — Feb 271
1 adult, Economy
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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Indiana to Illinois
Cheapest flights from Indiana to IllinoisExplore 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 January 21, 2026.
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 January 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 1/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/246:02 pm
ORD
- STL
1 stop12h 49m
Frontier
Thu 2/2610:11 pm
STL
- ORD
1 stop19h 15m
Frontier
Deal found 1/20![Frontier logo]()
$129
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/207:41 pm
IND
- ORD
1 stop16h 05m
Frontier
Wed 2/256:02 pm
ORD
- IND
1 stop23h 29m
Frontier
Deal found 1/21![Frontier logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/261:07 pm
CVG
- ORD
1 stop10h 32m
Frontier
Sat 2/284:42 pm
ORD
- CVG
1 stop5h 51m
Frontier
Deal found 1/21![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/199:05 am
MDW
- STL
1 stop21h 46m
Frontier
Mon 2/238:22 pm
STL
- MDW
1 stop22h 45m
Frontier
Deal found 1/19![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/191:07 pm
CVG
- ORD
1 stop10h 32m
Frontier
Mon 2/235:05 am
ORD
- CVG
1 stop11h 27m
Frontier
Deal found 1/21![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/194:42 pm
ORD
- STL
1 stop14h 09m
Frontier
Mon 2/238:22 pm
STL
- ORD
1 stop14h 29m
Frontier
Deal found 1/19![Frontier logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/168:02 pm
IND
- ORD
1 stop15h 28m
Frontier
Wed 2/186:02 pm
ORD
- IND
1 stop23h 29m
Frontier
Deal found 1/21![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 1/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/206:48 pm
MDW
- STL
1 stop12h 03m
Frontier
Mon 2/238:22 pm
STL
- MDW
1 stop22h 45m
Frontier
Deal found 1/18![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/52:42 pm
ORD
- STL
1 stop16h 09m
Frontier
Mon 2/98:22 pm
STL
- ORD
1 stop14h 29m
Frontier
Deal found 1/21![Frontier logo]()
$152
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/912:38 pm
IND
- ORD
1 stop11h 08m
Frontier
Wed 2/116:02 pm
ORD
- IND
1 stop23h 29m
Frontier
Deal found 1/21![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/212:38 pm
IND
- MDW
1 stop10h 41m
Frontier
Wed 2/41:20 pm
MDW
- IND
1 stop21h 23m
Frontier
Deal found 1/21![Frontier logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/55:01 pm
MDW
- STL
1 stop13h 50m
Frontier
Mon 2/98:22 pm
STL
- MDW
1 stop22h 45m
Frontier
Deal found 1/21![Frontier logo]()
$154
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 January 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $129 (Kiwi.com) |
One-way from | $64 (Expedia) |
Popular in | November |
Cheapest in | August |
Average price | $257 |
Good round-trip deal | $297 or less |
Good one-way deal | $219 or less |
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 January 21, 2026.
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
CincinnatiChicago
CVG - ORD
CVGORD
Cincinnati Cinci./N. Kentucky
Thu 2/26
1:07 pm-10:39 pm
1 stop10h 32m
Chicago O'Hare Intl
Sat 2/28
4:42 pm-11:33 pm
1 stop5h 51m
$132
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Thu 2/5
5:01 pm-6:51 am
1 stop13h 50m
Lambert-St Louis
Mon 2/9
8:22 pm-7:07 pm
1 stop22h 45m
$154
IndianapolisChicago
IND - ORD
INDORD
Indianapolis
Tue 2/17
7:15 am-7:33 am
Nonstop1h 18m
Chicago O'Hare Intl
Tue 2/24
3:45 pm-5:53 pm
Nonstop1h 08m
$157
CincinnatiChicago
CVG - ORD
CVGORD
Cincinnati Cinci./N. Kentucky
Wed 2/18
2:10 pm-2:45 pm
Nonstop1h 35m
Chicago O'Hare Intl
Wed 2/25
9:25 pm-11:49 pm
Nonstop1h 24m
$157
CincinnatiChicago
CVG - ORD
CVGORD
Cincinnati Cinci./N. Kentucky
Tue 2/24
7:00 am-7:32 am
Nonstop1h 32m
Chicago O'Hare Intl
Tue 2/24
9:25 pm-11:49 pm
Nonstop1h 24m
$157
IndianapolisChicago
IND - MDW
INDMDW
Indianapolis
Thu 1/29
12:38 pm-10:19 pm
1 stop10h 41m
Chicago Midway
Sun 2/1
6:20 am-11:43 am
1 stop28h 23m
$158
CincinnatiChicago
CVG - ORD
CVGORD
Cincinnati Cinci./N. Kentucky
Mon 2/23
12:17 pm-11:15 pm
1 stop11h 58m
Chicago O'Hare Intl
Thu 2/26
11:41 am-12:59 am
1 stop12h 18m
$160
IndianapolisChicago
IND - ORD
INDORD
Indianapolis
Thu 2/19
7:27 pm-10:39 pm
1 stop28h 12m
Chicago O'Hare Intl
Thu 2/26
4:16 pm-7:47 pm
1 stop26h 31m
$162
IndianapolisChicago
IND - ORD
INDORD
Indianapolis
Wed 3/4
7:00 am-7:26 am
Nonstop1h 26m
Chicago O'Hare Intl
Thu 3/5
2:55 pm-4:58 pm
Nonstop1h 03m
$164
CincinnatiChicago
CVG - ORD
CVGORD
Cincinnati Cinci./N. Kentucky
Sat 3/28
9:58 am-10:30 am
Nonstop1h 32m
Chicago O'Hare Intl
Tue 3/31
3:12 pm-5:32 pm
Nonstop1h 20m
$164
Showing 1-10 of 60 results
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 January 21, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 36% 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 January 17, 2026.
Travelers seeking maximum savings on their Indiana to Illinois flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday 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 January 21, 2026.
The most flights from USIN to USIL are scheduled on a Monday (57 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (40 on average).
How much does it cost to fly round-trip from Indiana to Illinois?
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 January 21, 2026.
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.
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Crew
8.6
Comfort
8.0
Boarding
8.1
Overall
8.0
Entertainment
7.5
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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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.
Top 4 airlines flying from Indiana to Illinois
Discover the top 4 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 January 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$137 | Average$311 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$160 | Average$247 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$278 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$192 | Average$337 | FlexibilityNo cancel fee | On-time63% |