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$54+ 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 12/17. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ORD
Nov 26 — Dec 31
Tue 11/26
Tue 12/3
1 adult, Economy
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Cheap flight deals from Indiana to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Indiana (USIN) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 21, 2024.

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 November 21, 2024.

This Mytrip deal was found by Cheapflights users on 11/19. 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 12/129:25 pmORD - STL
1 stop14h 05mSouthern / Mokulele
Mon 12/162:00 pmSTL - ORD
1 stop26h 10mSouthern / Mokulele
Deal found 11/19$110
This American Airlines deal was found by Cheapflights users on 11/20. 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.
Tue 12/103:05 pmORD - STL
Nonstop1h 16mAmerican Airlines
Wed 12/115:45 amSTL - ORD
Nonstop1h 27mAmerican Airlines
Deal found 11/20$137
This Southwest deal was found by Cheapflights users on 11/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/117:25 pmMDW - STL
Nonstop1h 15mSouthwest
Thu 12/126:30 amSTL - MDW
Nonstop1h 10mSouthwest
Deal found 11/19$143
This United Airlines deal was found by Cheapflights users on 11/20. 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.
Fri 12/137:00 amSDF - ORD
Nonstop1h 41mUnited Airlines
Mon 12/167:50 pmORD - SDF
Nonstop1h 36mUnited Airlines
Deal found 11/20$147
This Frontier deal was found by Cheapflights users on 11/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/129:35 amORD - STL
1 stop13h 49mFrontier
Sun 12/155:02 pmSTL - ORD
1 stop16h 52mFrontier
Deal found 11/21$159
This Booking.com deal was found by Cheapflights users on 11/20. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1510:58 amMDW - STL
1 stop21h 17mFrontier
Tue 12/173:53 pmSTL - MDW
1 stop18h 02mFrontier
Deal found 11/20$168
This Southwest deal was found by Cheapflights users on 11/19. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/177:25 amCVG - MDW
Nonstop1h 15mSouthwest
Tue 12/246:30 pmMDW - CVG
Nonstop1h 10mSouthwest
Deal found 11/19$168
This Frontier deal was found by Cheapflights users on 11/20. 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.
Fri 12/66:00 pmCVG - ORD
1 stop7h 45mFrontier
Sun 12/86:10 amORD - CVG
1 stop9h 17mFrontier
Deal found 11/20$168
This CheapOair deal was found by Cheapflights users on 11/20. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/111:30 pmIND - ORD
1 stop12h 04mMultiple Airlines
Tue 12/1711:24 amORD - IND
1 stop20h 14mMultiple Airlines
Deal found 11/20$172
This KAYAK deal was found by Cheapflights users on 11/20. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1110:50 amSDF - ORD
1 stop6h 40mDelta
Thu 12/127:05 amORD - SDF
1 stop5h 44mDelta
Deal found 11/20$174
This Mytrip deal was found by Cheapflights users on 11/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/167:45 pmORD - STL
2 stops19h 36mMultiple Airlines
Fri 12/2012:15 pmSTL - ORD
1 stop3h 35mMultiple Airlines
Deal found 11/20$178
This American Airlines deal was found by Cheapflights users on 11/19. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2910:30 amIND - ORD
Nonstop1h 14mAmerican Airlines
Sat 12/148:25 amORD - IND
Nonstop1h 13mAmerican Airlines
Deal found 11/19$179

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 2,629,791 searches. Data last updated November 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Sat 1/4

8:20 pm-11:45 am

1 stop15h 25m

Lambert-St Louis

Sat 1/11

12:15 pm-7:40 am

1 stop19h 25m

$104

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Tue 12/10

3:05 pm-4:21 pm

Nonstop1h 16m

Lambert-St Louis

Wed 12/11

5:45 am-7:12 am

Nonstop1h 27m

$137

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Tue 1/7

4:10 pm-5:25 pm

Nonstop1h 15m

Lambert-St Louis

Tue 1/21

10:20 am-11:30 am

Nonstop1h 10m

$138

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Fri 12/13

7:00 am-7:41 am

Nonstop1h 41m

Chicago O'Hare Intl

Mon 12/16

7:50 pm-10:26 pm

Nonstop1h 36m

$147

IndianapolisChicago

IND - ORD

INDORD

Indianapolis

Fri 1/17

12:49 pm-12:32 am

1 stop12h 43m

Chicago O'Hare Intl

Sun 1/19

7:25 am-7:45 pm

1 stop11h 20m

$148

LouisvilleChicago

SDF - ORD

SDFORD

Louisville Intl

Sat 1/18

6:35 am-7:14 am

Nonstop1h 39m

Chicago O'Hare Intl

Mon 1/20

2:55 pm-5:19 pm

Nonstop1h 24m

$157

ChicagoSt. Louis

ORD - STL

ORDSTL

Chicago O'Hare Intl

Thu 12/12

9:35 am-11:24 pm

1 stop13h 49m

Lambert-St Louis

Sun 12/15

5:02 pm-9:54 am

1 stop16h 52m

$159

CincinnatiChicago

CVG - MDW

CVGMDW

Cincinnati Cinci./N. Kentucky

Tue 12/17

7:25 am-7:40 am

Nonstop1h 15m

Chicago Midway

Tue 12/24

6:30 pm-8:40 pm

Nonstop1h 10m

$168

ChicagoSt. Louis

MDW - STL

MDWSTL

Chicago Midway

Sun 12/15

10:58 am-8:15 am

1 stop21h 17m

Lambert-St Louis

Tue 12/17

3:53 pm-9:55 am

1 stop18h 02m

$168

CincinnatiChicago

CVG - ORD

CVGORD

Cincinnati Cinci./N. Kentucky

Fri 12/6

6:00 pm-12:45 am

1 stop7h 45m

Chicago O'Hare Intl

Sun 12/8

6:10 am-4:27 pm

1 stop9h 17m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

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.

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, September is the cheapest month in which you can book a flight from Indiana to Illinois (average of $232). Flying from Indiana to Illinois in June is currently the most expensive (average of $308). 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 November 21, 2024.

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 November 21, 2024.

The most flights from USIN to USIL are scheduled on a Wednesday (78 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (38 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 November 21, 2024.
To help decide which airline to fly from Indiana to Illinois, see what other customers have to say about United Airlines, Frontier and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,015 reviews

Food

7.2

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,015 reviews
Southwest
8.1
Very good
5,015 reviews

Food

7.2

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,758 reviews
Southwest
8.1
Very good
5,015 reviews

Food

7.2

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

United Airlines
7.4
Good
9,172 reviews
Southwest
8.1
Very good
5,015 reviews

Food

7.2

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

WestJet
7.3
Good
2,810 reviews
Southwest
8.1
Very good
5,015 reviews

Food

7.2

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
5,015 reviews

Food

7.2

Comfort

8.1

Boarding

8.2

Entertainment

7.7

Crew

8.7

Overall

8.1

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

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?

    $54 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Southern / Mokulele and Southwest, with prices starting from $60 and $69, 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, September is the cheapest month in which you can book a flight from Indiana to Illinois (average of $232). Flying from Indiana to Illinois in June is currently the most expensive (average of $308). 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.

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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 2,629,791 searches. Data last updated November 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$178Average$275FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$178Average$311FlexibilityNo cancel feeOn-time71%
Southern / MokuleleCheapest$188Average$218FlexibilityNo cancel feeOn-timeN/A
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