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Illinois

$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 5/21. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ORD
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$140
(Southern / Mokulele)

One-way from

$64
(Mytrip)

Popular in

March

Cheapest in

December

Average price

$296

Good round-trip deal

$228 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 May 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 May 1, 2025.

This Southern / Mokulele deal was found by Cheapflights users on 4/30. 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.
Thu 5/298:25 amORD - STL
1 stop11h 45mSouthern / Mokulele
Thu 6/55:15 pmSTL - ORD
1 stop14h 25mSouthern / Mokulele
Deal found 4/30$140
This FlightHub deal was found by Cheapflights users on 4/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/282:07 pmSDF - ORD
1 stop7h 01mSpirit Airlines
Wed 6/46:30 amORD - SDF
1 stop5h 42mSpirit Airlines
Deal found 4/30$147
This Frontier deal was found by Cheapflights users on 4/30. 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.
Sat 6/146:20 amMDW - STL
1 stop7h 47mFrontier
Sat 6/212:52 pmSTL - MDW
1 stop7h 36mFrontier
Deal found 4/30$161
This Frontier deal was found by Cheapflights users on 4/30. 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 5/283:29 pmIND - ORD
1 stop9h 51mFrontier
Sat 5/318:04 amORD - IND
1 stop5h 31mFrontier
Deal found 4/30$162
This Frontier deal was found by Cheapflights users on 4/30. 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 5/285:03 pmORD - STL
1 stop6h 41mFrontier
Wed 6/45:45 pmSTL - ORD
1 stop6h 51mFrontier
Deal found 4/30$162
This Mytrip deal was found by Cheapflights users on 4/29. 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.
Sun 5/119:20 amIND - ORD
1 stop24h 35mSpirit Airlines
Thu 5/1510:00 amORD - IND
1 stop21h 15mSpirit Airlines
Deal found 4/29$168
This Frontier deal was found by Cheapflights users on 5/1. 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 5/1511:50 amCVG - ORD
1 stop8h 26mFrontier
Sat 5/179:19 amORD - CVG
1 stop10h 33mFrontier
Deal found 5/1$171
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 5/308:30 amIND - ORD
Nonstop1h 20mAmerican Airlines
Fri 6/66:47 amORD - IND
Nonstop1h 05mAmerican Airlines
Deal found 4/30$179
This American Airlines deal was found by Cheapflights users on 4/30. 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 8/78:25 amDAY - ORD
Nonstop1h 25mAmerican Airlines
Tue 8/129:41 amORD - DAY
Nonstop1h 17mAmerican Airlines
Deal found 4/30$179
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/248:56 amSDF - ORD
Nonstop1h 36mAmerican Airlines
Sun 5/258:25 pmORD - SDF
Nonstop1h 36mAmerican Airlines
Deal found 4/30$179
This Frontier deal was found by Cheapflights users on 4/30. 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.
Fri 5/165:45 amCVG - MDW
1 stop7h 39mFrontier
Sun 5/184:00 pmMDW - CVG
1 stop7h 40mFrontier
Deal found 4/30$180
This Booking.com deal was found by Cheapflights users on 4/30. 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 5/2112:57 pmCVG - STL
1 stop11h 47mFrontier
Sat 5/245:35 pmSTL - CVG
1 stop16h 24mFrontier
Deal found 4/30$181

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 May 1, 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

Thu 5/29

8:25 am-8:10 pm

1 stop11h 45m

Lambert-St Louis

Tue 6/3

12:15 pm-3:50 pm

1 stop3h 35m

$140

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Wed 5/28

2:07 pm-8:08 pm

1 stop7h 01m

Chicago O'Hare Intl

Wed 6/4

6:30 am-1:12 pm

1 stop5h 42m

$147

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Sat 6/14

6:20 am-2:07 pm

1 stop7h 47m

Lambert-St Louis

Sat 6/21

2:52 pm-10:28 pm

1 stop7h 36m

$161

IndianapolisChicago

IND - ORD

INDORD

Indianapolis

Wed 5/28

3:29 pm-12:20 am

1 stop9h 51m

Chicago O'Hare Intl

Sat 5/31

8:04 am-2:35 pm

1 stop5h 31m

$162

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Wed 5/28

5:03 pm-11:44 pm

1 stop6h 41m

Lambert-St Louis

Wed 6/4

5:45 pm-12:36 am

1 stop6h 51m

$162

IndianapolisChicago

IND - ORD

INDORD

Indianapolis

Sun 5/11

9:20 am-8:55 am

1 stop24h 35m

Chicago O'Hare Intl

Thu 5/15

10:00 am-8:15 am

1 stop21h 15m

$168

CincinnatiChicago

CVG - ORD

CVGORD

Cincinnati Cinci./N. Kentucky

Thu 5/15

11:50 am-7:16 pm

1 stop8h 26m

Chicago O'Hare Intl

Sat 5/17

9:19 am-8:52 pm

1 stop10h 33m

$171

IndianapolisChicago

IND - ORD

INDORD

Indianapolis

Fri 5/30

8:30 am-8:50 am

Nonstop1h 20m

Chicago O'Hare Intl

Fri 6/6

6:47 am-8:52 am

Nonstop1h 05m

$179

DaytonChicago

DAY - ORD

DAYORD

Dayton

Thu 8/7

8:25 am-8:50 am

Nonstop1h 25m

Chicago O'Hare Intl

Tue 8/12

9:41 am-11:58 am

Nonstop1h 17m

$179

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Sat 5/24

8:56 am-9:32 am

Nonstop1h 36m

Chicago O'Hare Intl

Sun 5/25

8:25 pm-11:01 pm

Nonstop1h 36m

$179

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 May 1, 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 May 1, 2025.

The most flights from USIN to USIL are scheduled on a Thursday (70 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (20 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 May 1, 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
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Allegiant Air
7.3
Good
734 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Comfort

7.9

Boarding

8.1

Entertainment

7.1

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    $64 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Southern / Mokulele and Frontier, with prices starting from $73 and $81, 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$179Average$278FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$179Average$318FlexibilityNo cancel feeOn-time71%
Southern / MokuleleCheapest$189Average$226FlexibilityNo cancel feeOn-timeN/A

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