$53+ 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 3/25. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ORD
Feb 25 — Mar 41
1 adult, Economy
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Find cheap flights from Indiana to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
Keep the following information in mind while searching for Indiana to Illinois flight deals. Data was last updated February 20, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $110 (Frontier) |
One-way from | $53 (Mytrip) |
Popular in | February |
Cheapest in | December |
Average price | $337 |
Good round-trip deal | $189 or less |
Good one-way deal | $125 or less |
Find 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 February 20, 2025.
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 February 20, 2025.
This Frontier deal was found by Cheapflights users on 2/20. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/128:55 amIND - ORD
1 stop8h 36mFrontier
Tue 4/19:22 amORD - IND
1 stop6h 02mFrontier
Deal found 2/20![Frontier logo]()
$110
This Frontier deal was found by Cheapflights users on 2/18. 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.
Thu 4/310:19 amMDW - STL
1 stop13h 27mFrontier
Mon 4/76:38 pmSTL - MDW
1 stop10h 45mFrontier
Deal found 2/18![Frontier logo]()
$110
This Frontier deal was found by Cheapflights users on 2/19. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/39:20 amORD - STL
1 stop14h 26mFrontier
Mon 4/76:38 pmSTL - ORD
1 stop10h 27mFrontier
Deal found 2/19![Frontier logo]()
$110
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/61:15 pmMDW - STL
Nonstop1h 10mSouthwest
Mon 3/108:35 pmSTL - MDW
Nonstop1h 10mSouthwest
Deal found 2/20![Southwest logo]()
$117
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Mon 4/148:57 pmSDF - ORD
Nonstop1h 33mAmerican Airlines
Mon 4/218:25 pmORD - SDF
Nonstop1h 35mAmerican Airlines
Deal found 2/20![American Airlines logo]()
$117
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/141:05 pmSDF - MDW
Nonstop1h 15mSouthwest
Thu 4/172:05 pmMDW - SDF
Nonstop1h 10mSouthwest
Deal found 2/20![Southwest logo]()
$117
This American Airlines deal was found by Cheapflights users on 2/20. 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.
Thu 3/68:57 pmORD - STL
Nonstop1h 17mAmerican Airlines
Mon 3/105:55 amSTL - ORD
Nonstop1h 20mAmerican Airlines
Deal found 2/20![American Airlines logo]()
$117
This United Airlines deal was found by Cheapflights users on 2/20. 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.
Tue 3/1110:15 amSDF - ORD
Nonstop1h 48mUnited Airlines
Wed 3/128:00 pmORD - SDF
Nonstop1h 31mUnited Airlines
Deal found 2/20![United Airlines logo]()
$118
This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/196:59 pmIND - ORD
1 stop13h 35mSpirit Airlines
Wed 3/265:55 amORD - IND
1 stop11h 08mSpirit Airlines
Deal found 2/19![Spirit Airlines logo]()
$123
This Trip.com deal was found by Cheapflights users on 2/20. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/24:51 pmCVG - STL
1 stop7h 55mFrontier
Mon 4/285:41 pmSTL - CVG
1 stop6h 31mFrontier
Deal found 2/20![Frontier logo]()
$123
This Mytrip deal was found by Cheapflights users on 2/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/39:20 amORD - STL
1 stop14h 26mMultiple Airlines
Thu 4/1012:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 2/19![Multiple Airlines logo]()
$131
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/118:55 amSDF - ORD
1 stop5h 10mSouthwest
Wed 3/127:30 amORD - SDF
1 stop6h 20mSouthwest
Deal found 2/20![Southwest logo]()
$137
Find flights from Indiana to Illinois within your budget
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 February 20, 2025.
Fly from
Indiana
Fly to
Illinois
Route
Depart
Return
Price
IndianapolisChicago
IND - ORD
INDORD
Indianapolis
Wed 3/12
8:55 am-4:31 pm
1 stop8h 36m
Chicago O'Hare Intl
Tue 4/1
9:22 am-4:24 pm
1 stop6h 02m
$110
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Thu 4/3
10:19 am-11:46 pm
1 stop13h 27m
Lambert-St Louis
Mon 4/7
6:38 pm-5:23 am
1 stop10h 45m
$110
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Thu 4/3
9:20 am-11:46 pm
1 stop14h 26m
Lambert-St Louis
Mon 4/7
6:38 pm-5:05 am
1 stop10h 27m
$110
ChicagoSt. Louis
MDW - STL
MDWSTL
Chicago Midway
Thu 3/6
1:15 pm-2:25 pm
Nonstop1h 10m
Lambert-St Louis
Mon 3/10
8:35 pm-9:45 pm
Nonstop1h 10m
$117
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Mon 4/14
8:57 pm-9:30 pm
Nonstop1h 33m
Chicago O'Hare Intl
Mon 4/21
8:25 pm-11:00 pm
Nonstop1h 35m
$117
LouisvilleChicago
SDF - MDW
SDFMDW
Louisville Intl
Mon 4/14
1:05 pm-1:20 pm
Nonstop1h 15m
Chicago Midway
Mon 4/21
9:10 am-11:20 am
Nonstop1h 10m
$117
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Thu 3/6
8:57 pm-10:14 pm
Nonstop1h 17m
Lambert-St Louis
Mon 3/10
5:55 am-7:15 am
Nonstop1h 20m
$117
LouisvilleChicago
SDF - ORD
SDFORD
Louisville Intl
Tue 3/11
10:15 am-11:03 am
Nonstop1h 48m
Chicago O'Hare Intl
Wed 3/12
8:00 pm-10:31 pm
Nonstop1h 31m
$118
CincinnatiSt. Louis
CVG - STL
CVGSTL
Cincinnati Cinci./N. Kentucky
Wed 4/2
4:51 pm-11:46 pm
1 stop7h 55m
Lambert-St Louis
Mon 4/28
5:41 pm-1:12 am
1 stop6h 31m
$123
ChicagoSt. Louis
ORD - STL
ORDSTL
Chicago O'Hare Intl
Thu 4/3
9:20 am-11:46 pm
1 stop14h 26m
Lambert-St Louis
Thu 4/10
12:15 pm-3:50 pm
1 stop3h 35m
$131
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.
Travel insights for flights from Indiana to Illinois
Get recent, data-driven insights about flights from Indiana to Illinois including ideal travel times, pricing trends, and more.
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 February 20, 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 February 20, 2025.
The most flights from USIN to USIL are scheduled on a Thursday (61 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (35 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 February 20, 2025.
To help decide which airline to fly from Indiana to Illinois, see what other customers have to say about Southwest, Delta and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Food
7.1
Boarding
8.2
Overall
8.1
Entertainment
7.6
Comfort
8.1
Crew
8.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Food
7.1
Boarding
8.2
Overall
8.1
Entertainment
7.6
Comfort
8.1
Crew
8.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Food
7.1
Boarding
8.2
Overall
8.1
Entertainment
7.6
Comfort
8.1
Crew
8.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Food
7.1
Boarding
8.2
Overall
8.1
Entertainment
7.6
Comfort
8.1
Crew
8.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Food
7.1
Boarding
8.2
Overall
8.1
Entertainment
7.6
Comfort
8.1
Crew
8.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
Food
7.1
Boarding
8.2
Overall
8.1
Entertainment
7.6
Comfort
8.1
Crew
8.7
Reviews
1 / 20
2.0
MediocreAnonymous,Feb 2025
MCO - STL
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 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 February 20, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$178 | Average$318 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$179 | Average$278 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$218 | FlexibilityNo cancel fee | On-timeN/A |