$79+ 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 9/6. Fares are subject to change and may not be available on all flights or dates of travel.
IND — ORD
Sep 5 — Sep 121
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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
Cheapest
Best
Last-minute
One-way
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 August 6, 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 August 6, 2026.
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Sat 9/57:31 pm -
Nonstop1h 29m
Sun 9/61:00 pm -
Nonstop1h 21m
Deal found 8/6![United Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 8/5. 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 9/52:15 pm -
Nonstop1h 05m
Sun 9/611:15 am -
Nonstop1h 00m
Deal found 8/5![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 8/3. 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 9/58:20 am -
Nonstop1h 05m
Sun 9/69:30 am -
Nonstop1h 10m
Deal found 8/3![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Sat 9/54:15 pm -
Nonstop1h 37m
Sun 9/64:38 pm -
Nonstop1h 34m
Deal found 8/3![United Airlines logo]()
$157
This American Airlines deal was found by Cheapflights users on 8/2. 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 9/512:19 pm -
Nonstop1h 22m
Sun 9/66:45 am -
Nonstop1h 15m
Deal found 8/2![American Airlines logo]()
$158
This American Airlines deal was found by Cheapflights users on 8/3. 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 9/59:54 am -
Nonstop1h 41m
Sun 9/610:00 pm -
Nonstop1h 27m
Deal found 8/3![American Airlines logo]()
$158
This Frontier deal was found by Cheapflights users on 8/5. 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 9/194:12 pm -
1 stop9h 11m
Sat 9/266:20 am -
1 stop11h 33m
Deal found 8/5![Frontier logo]()
$159
This Frontier deal was found by Cheapflights users on 8/2. 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 9/1611:21 am -
1 stop12h 38m
Wed 9/236:30 am -
1 stop7h 47m
Deal found 8/2![Frontier logo]()
$160
This Southwest deal was found by Cheapflights users on 8/6. 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 11/125:20 pm -
1 stop5h 15m
Tue 11/1710:15 am -
1 stop4h 35m
Deal found 8/6![Southwest logo]()
$171
This Southwest deal was found by Cheapflights users on 8/4. 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.
Fri 9/111:15 pm -
2 stops5h 35m
Fri 9/118:35 pm -
Nonstop1h 05m
Deal found 8/4![Southwest logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/2412:26 pm -
1 stop8h 33m
Wed 9/21:59 pm -
1 stop20h 22m
Deal found 8/2![Frontier logo]()
$173
This Frontier deal was found by Cheapflights users on 8/5. 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 9/1712:43 pm -
1 stop6h 40m
Thu 9/178:55 pm -
1 stop8h 52m
Deal found 8/5![Frontier logo]()
$175
Best flights from Indiana to IllinoisDiscover carefully curated flight deals from Indiana to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
Discover carefully curated flight deals from Indiana to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
This Southwest deal was found by Cheapflights users on 8/3. 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 9/52:15 pm -
Nonstop1h 05m
Sun 9/68:40 pm -
Nonstop1h 00m
Deal found 8/3![Southwest logo]()
$157
This Delta deal was found by Cheapflights users on 8/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/52:17 pm -
1 stop3h 42m
Sun 9/69:24 am -
1 stop3h 20m
Deal found 8/3![Delta logo]()
$198
This United Airlines deal was found by Cheapflights users on 8/6. 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 9/118:40 am -
Nonstop1h 32m
Sun 9/136:53 pm -
Nonstop1h 36m
Deal found 8/6![United Airlines logo]()
$232
This Southwest deal was found by Cheapflights users on 8/2. 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 9/54:55 pm -
Nonstop1h 10m
Sun 9/68:55 am -
1 stop4h 05m
Deal found 8/2![Southwest logo]()
$167
This American Airlines deal was found by Cheapflights users on 8/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1711:05 pm -
Nonstop1h 22m
Sun 9/209:21 am -
1 stop6h 39m
Deal found 8/1![American Airlines logo]()
$334
This Kiwi.com deal was found by Cheapflights users on 8/6. 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 9/311:50 am -
1 stop5h 32m
Sun 9/67:58 pm -
2 stops14h 57m
Deal found 8/6![Frontier logo]()
$340
This Southwest deal was found by Cheapflights users on 8/2. 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.
Fri 9/111:15 pm -
2 stops5h 35m
Fri 9/118:35 pm -
Nonstop1h 05m
Deal found 8/2![Southwest logo]()
$172
This Delta deal was found by Cheapflights users on 8/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/76:10 am -
1 stop5h 32m
Thu 9/108:55 am -
1 stop3h 33m
Deal found 8/6![Delta logo]()
$225
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Mon 10/199:04 am -
Nonstop1h 41m
Mon 10/199:25 pm -
Nonstop1h 34m
Deal found 8/6![United Airlines logo]()
$235
This Southwest deal was found by Cheapflights users on 8/3. 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 9/147:00 pm -
Nonstop1h 10m
Tue 9/155:55 pm -
Nonstop1h 20m
Deal found 8/3![Southwest logo]()
$205
This United Airlines deal was found by Cheapflights users on 8/4. 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.
Wed 11/117:00 am -
Nonstop1h 45m
Mon 11/164:00 pm -
Nonstop1h 32m
Deal found 8/4![United Airlines logo]()
$235
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/55:50 pm -
1 stop7h 07m
Sun 9/66:00 am -
1 stop4h 55m
Deal found 8/5![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 8/2. 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 10/58:20 pm -
Nonstop1h 15m
Sat 10/108:15 am -
Nonstop1h 10m
Deal found 8/2![Southwest logo]()
$205
This Southwest deal was found by Cheapflights users on 8/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/239:05 am -
Nonstop1h 05m
Tue 9/2912:45 pm -
Nonstop1h 10m
Deal found 8/1![Southwest logo]()
$205
This United Airlines deal was found by Cheapflights users on 8/4. 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 8/286:11 pm -
Nonstop1h 34m
Sat 8/298:40 am -
Nonstop1h 18m
Deal found 8/4![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/251:17 pm -
1 stop4h 34m
Thu 8/276:40 am -
1 stop4h 41m
Deal found 8/2![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 8/2. 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 9/167:15 pm -
Nonstop1h 10m
Wed 9/235:55 pm -
Nonstop1h 20m
Deal found 8/2![Southwest logo]()
$205
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:59 pm -
1 stop5h 34m
Sat 10/244:19 pm -
1 stop4h 19m
Deal found 8/5![Delta logo]()
$255
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/410:23 am -
Nonstop1h 40m
Mon 9/79:25 pm -
Nonstop1h 34m
Deal found 8/3![United Airlines logo]()
$258
This Southwest deal was found by Cheapflights users on 8/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/295:50 am -
2 stops8h 15m
Sat 9/52:25 pm -
1 stop3h 30m
Deal found 8/1![Southwest logo]()
$206
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/510:24 am -
1 stop3h 35m
Wed 10/71:55 pm -
1 stop4h 08m
Deal found 8/4![Delta logo]()
$257
This KAYAK deal was found by Cheapflights users on 8/3. 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.
Sun 8/306:04 am -
1 stop7h 11m
Tue 9/16:45 am -
Nonstop1h 15m
Deal found 8/3![American Airlines logo]()
$382
This United Airlines deal was found by Cheapflights users on 8/2. 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 9/47:50 pm -
1 stop4h 50m
Sun 9/66:50 am -
Nonstop1h 26m
Deal found 8/2![United Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 8/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/296:34 am -
1 stop5h 08m
Mon 8/316:59 am -
1 stop5h 45m
Deal found 8/6![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 8/4. 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 9/19:05 am -
Nonstop1h 05m
Tue 9/86:30 am -
1 stop6h 10m
Deal found 8/4![Southwest logo]()
$215
This United Airlines deal was found by Cheapflights users on 8/2. 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.
Sat 8/157:15 am -
Nonstop1h 38m
Mon 8/179:30 pm -
Nonstop1h 29m
Deal found 8/2![United Airlines logo]()
$282
This American Airlines deal was found by Cheapflights users on 8/6. 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 9/49:45 am -
1 stop8h 03m
Fri 9/111:15 pm -
1 stop7h 27m
Deal found 8/6![American Airlines logo]()
$413
This Southwest deal was found by Cheapflights users on 8/4. 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 8/317:05 am -
1 stop4h 55m
Mon 8/316:10 pm -
Nonstop1h 15m
Deal found 8/4![Southwest logo]()
$215
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/282:24 pm -
1 stop5h 05m
Sat 8/296:59 am -
1 stop5h 40m
Deal found 8/2![Delta logo]()
$280
This United Airlines deal was found by Cheapflights users on 8/6. 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.
Wed 8/126:11 pm -
Nonstop1h 34m
Sat 8/1511:10 am -
Nonstop1h 28m
Deal found 8/6![United Airlines logo]()
$285
Last-minute flights from Indiana to IllinoisDiscover last-minute flight deals from Indiana to Illinois. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Indiana to Illinois. Data last updated August 6, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/2. 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 8/2412:26 pm -
1 stop8h 33m
Wed 9/21:59 pm -
1 stop20h 22m
Deal found 8/2![Frontier logo]()
$173
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Sat 9/52:00 pm -
Nonstop1h 20m
Sun 9/67:38 pm -
Nonstop1h 22m
Deal found 8/3![United Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 8/5. 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 9/52:15 pm -
Nonstop1h 05m
Sun 9/611:15 am -
Nonstop1h 00m
Deal found 8/5![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 8/3. 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 9/58:20 am -
Nonstop1h 05m
Sun 9/69:30 am -
Nonstop1h 10m
Deal found 8/3![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 8/3. 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.
Sat 9/54:15 pm -
Nonstop1h 37m
Sun 9/64:38 pm -
Nonstop1h 34m
Deal found 8/3![United Airlines logo]()
$157
This American Airlines deal was found by Cheapflights users on 8/2. 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 9/512:19 pm -
Nonstop1h 22m
Sun 9/66:45 am -
Nonstop1h 15m
Deal found 8/2![American Airlines logo]()
$158
This American Airlines deal was found by Cheapflights users on 8/3. 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 9/59:54 am -
Nonstop1h 41m
Sun 9/610:00 pm -
Nonstop1h 27m
Deal found 8/3![American Airlines logo]()
$158
This Delta deal was found by Cheapflights users on 8/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 pm -
1 stop4h 03m
Sun 9/66:30 am -
1 stop4h 12m
Deal found 8/6![Delta logo]()
$164
This Delta deal was found by Cheapflights users on 8/6. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 pm -
1 stop4h 03m
Sat 9/126:15 am -
1 stop5h 24m
Deal found 8/6![Delta logo]()
$171
This Southwest deal was found by Cheapflights users on 8/5. 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.
Fri 9/116:45 am -
Nonstop1h 00m
Fri 9/111:40 pm -
2 stops8h 30m
Deal found 8/5![Southwest logo]()
$172
This Frontier deal was found by Cheapflights users on 8/2. 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 9/1611:21 am -
1 stop12h 38m
Wed 9/236:30 am -
1 stop7h 47m
Deal found 8/2![Frontier logo]()
$160
This Frontier deal was found by Cheapflights users on 8/5. 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 9/194:12 pm -
1 stop9h 11m
Sat 9/266:20 am -
1 stop11h 33m
Deal found 8/5![Frontier logo]()
$159
One-way flights from Indiana to IllinoisSearch for one-way flight options from Indiana to Illinois. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
Search for one-way flight options from Indiana to Illinois. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This Frontier deal was found by Cheapflights users on 8/2. 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 9/244:12 pm -
1 stop9h 11m
Deal found 8/2![Frontier logo]()
$79
This Southwest deal was found by Cheapflights users on 8/4. 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.
Sun 9/67:50 am -
Nonstop1h 00m
Deal found 8/4![Southwest logo]()
$79
This Southwest deal was found by Cheapflights users on 8/6. 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 9/54:55 pm -
Nonstop1h 10m
Deal found 8/6![Southwest logo]()
$79
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/119:00 am -
Nonstop1h 35m
Deal found 8/3![United Airlines logo]()
$79
This Frontier deal was found by Cheapflights users on 8/5. 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 9/194:12 pm -
1 stop9h 11m
Deal found 8/5![Frontier logo]()
$80
This Frontier deal was found by Cheapflights users on 8/1. 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.
Mon 8/3112:15 pm -
1 stop11h 53m
Deal found 8/1![Frontier logo]()
$85
This CheapOair deal was found by Cheapflights users on 8/6. 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 9/301:21 pm -
1 stop21h 56m
Deal found 8/6![Frontier logo]()
$87
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:20 am -
1 stop5h 22m
Deal found 8/4![Delta logo]()
$89
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/512:12 pm -
1 stop5h 47m
Deal found 8/4![Delta logo]()
$89
This Delta deal was found by Cheapflights users on 8/4. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:10 am -
1 stop4h 07m
Deal found 8/4![Delta logo]()
$89
This Delta deal was found by Cheapflights users on 8/5. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:10 am -
1 stop5h 32m
Deal found 8/5![Delta logo]()
$89
This Frontier deal was found by Cheapflights users on 8/2. 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 10/312:43 pm -
1 stop6h 08m
Deal found 8/2![Frontier logo]()
$90
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 August 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $157 (United Airlines) |
One-way from | $79 (Frontier) |
Popular in | June |
Cheapest in | August |
Average price | $237 |
Good round-trip deal | $348 or less |
Good one-way deal | $148 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 August 6, 2026.
Use the filters below to find and compare flights from Indiana to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
IndianapolisChicago
IND Indianapolis - MDW Chicago Midway
INDMDW
Indianapolis
Sat 9/5
2:15 pm-2:20 pm
Nonstop1h 05m
Chicago Midway
Sun 9/6
8:40 pm-10:40 pm
Nonstop1h 00m
$157
CincinnatiChicago
CVG Cincinnati Cinci./N. Kentucky - MDW Chicago Midway
CVGMDW
Cincinnati Cinci./N. Kentucky
Sat 9/5
4:55 pm-5:05 pm
Nonstop1h 10m
Chicago Midway
Sun 9/6
8:55 am-2:00 pm
1 stop4h 05m
$167
IndianapolisChicago
IND Indianapolis - MDW Chicago Midway
INDMDW
Indianapolis
Fri 9/11
1:15 pm-5:50 pm
2 stops5h 35m
Chicago Midway
Fri 9/11
8:35 pm-10:40 pm
Nonstop1h 05m
$172
IndianapolisChicago
IND Indianapolis - MDW Chicago Midway
INDMDW
Indianapolis
Sat 9/5
2:17 pm-4:59 pm
1 stop3h 42m
Chicago Midway
Sun 9/6
9:24 am-1:44 pm
1 stop3h 20m
$198
CincinnatiChicago
CVG Cincinnati Cinci./N. Kentucky - MDW Chicago Midway
CVGMDW
Cincinnati Cinci./N. Kentucky
Mon 9/14
7:00 pm-7:10 pm
Nonstop1h 10m
Chicago Midway
Tue 9/15
5:55 pm-8:15 pm
Nonstop1h 20m
$205
CincinnatiChicago
CVG Cincinnati Cinci./N. Kentucky - MDW Chicago Midway
CVGMDW
Cincinnati Cinci./N. Kentucky
Mon 10/5
8:20 pm-8:35 pm
Nonstop1h 15m
Chicago Midway
Sat 10/10
8:15 am-10:25 am
Nonstop1h 10m
$205
CincinnatiChicago
CVG Cincinnati Cinci./N. Kentucky - MDW Chicago Midway
CVGMDW
Cincinnati Cinci./N. Kentucky
Wed 9/23
9:05 am-9:10 am
Nonstop1h 05m
Chicago Midway
Tue 9/29
12:45 pm-2:55 pm
Nonstop1h 10m
$205
CincinnatiChicago
CVG Cincinnati Cinci./N. Kentucky - MDW Chicago Midway
CVGMDW
Cincinnati Cinci./N. Kentucky
Wed 9/16
7:15 pm-7:25 pm
Nonstop1h 10m
Chicago Midway
Wed 9/23
5:55 pm-8:15 pm
Nonstop1h 20m
$205
CincinnatiChicago
CVG Cincinnati Cinci./N. Kentucky - MDW Chicago Midway
CVGMDW
Cincinnati Cinci./N. Kentucky
Sat 8/29
5:50 am-1:05 pm
2 stops8h 15m
Chicago Midway
Sat 9/5
2:25 pm-6:55 pm
1 stop3h 30m
$206
CincinnatiChicago
CVG Cincinnati Cinci./N. Kentucky - MDW Chicago Midway
CVGMDW
Cincinnati Cinci./N. Kentucky
Tue 9/1
9:05 am-9:10 am
Nonstop1h 05m
Chicago Midway
Tue 9/8
6:30 am-1:40 pm
1 stop6h 10m
$215
Showing 1-10 of 60 resultsSorted by cheapest first
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.
IND-ORD
IND-MDW
CVG-MDW
CVG-ORD
MDW-STL
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
USIN-USIL
IND-ORD
IND-MDW
CVG-MDW
CVG-ORD
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 $212). Flying from Indiana to Illinois in July is currently the most expensive (average of $356). 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 August 6, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 31% on flights from Indiana to Illinois by exploring options for tickets in the morning.
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 August 6, 2026.
The most flights from USIN to USIL are scheduled on a Wednesday (68 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (27 on average).
How much does it cost to fly round-trip from Indiana to Illinois?
Airfare is below average for this route at the moment.
Indiana to Illinois flights typically cost between $272 and $342 in September.The cheapest round-trip price found within the last 5 days was $157 on United Airlines (Sep 5-Sep 6).
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 August 1, 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. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 August 6, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andAmerican 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.
Entertainment
7.5
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Food
7.0
Crew
8.6
Overall
8.0
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Alternative routes for Indiana to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Indiana to Illinois by cabin class
Find flights from Indiana to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Indiana and Illinois flights
Browse other Indiana and Illinois flight options. Last updated on August 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Indiana after your stay in Illinois
Indiana to Illinois flights
Consider these flights traveling from Indiana to Illinois.
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 August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$157 | Average$255 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$177 | Average$337 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$192 | Average$337 | FlexibilityNo cancel fee | On-time63% |