$65+ Cheap flights from Chicago (CHI) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — ORD
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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Find cheap flights from Chicago to Illinois with Cheapflights
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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
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Cheapest flights from Chicago to IllinoisExplore the most affordable flight options available from Chicago to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
Explore the most affordable flight options available from Chicago to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
This Mytrip deal was found by Cheapflights users on 9/16. 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 10/16:00 pm -
Nonstop1h 25m
Mon 10/59:00 am -
Nonstop1h 35m
Deal found 9/16![Contour logo]()
$109
This Booking.com deal was found by Cheapflights users on 9/16. 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 12/2712:20 pm -
Nonstop1h 25m
Sun 1/33:45 pm -
Nonstop1h 35m
Deal found 9/16![Contour logo]()
$111
This Booking.com deal was found by Cheapflights users on 9/15. 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.
Thu 10/1512:20 pm -
Nonstop1h 25m
Tue 10/209:00 am -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$112
This Booking.com deal was found by Cheapflights users on 9/14. 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.
Sat 10/176:00 pm -
Nonstop1h 25m
Tue 10/209:00 am -
Nonstop1h 35m
Deal found 9/14![Contour logo]()
$113
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Fri 10/96:00 pm -
Nonstop1h 25m
Mon 10/123:45 pm -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$115
This Booking.com deal was found by Cheapflights users on 9/15. 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 11/2212:20 pm -
Nonstop1h 25m
Sun 11/293:45 pm -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$121
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:20 pm -
Nonstop1h 25m
Wed 10/213:45 pm -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$123
This Kiwi.com deal was found by Cheapflights users on 9/16. 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.
Sat 11/216:00 pm -
Nonstop1h 25m
Thu 12/33:45 pm -
Nonstop1h 35m
Deal found 9/16![Contour logo]()
$128
This Contour deal was found by Cheapflights users on 9/15. 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 Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:00 pm -
Nonstop1h 25m
Thu 10/159:00 am -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$129
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 10/17:25 am -
Nonstop1h 10m
Mon 10/57:18 pm -
Nonstop1h 17m
Deal found 9/16![United Airlines logo]()
$149
This Booking.com deal was found by Cheapflights users on 9/12. 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.
Fri 9/255:50 pm -
Nonstop1h 25m
Sun 9/273:35 pm -
Nonstop1h 35m
Deal found 9/12![Contour logo]()
$152
This Expedia deal was found by Cheapflights users on 9/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:21 am -
1 stop11h 19m
Wed 10/216:35 pm -
1 stop5h 08m
Deal found 9/16![Frontier logo]()
$155
Best flights from Chicago to IllinoisDiscover carefully curated flight deals from Chicago to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Chicago to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This Booking.com deal was found by Cheapflights users on 9/15. 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.
Mon 10/1912:20 pm -
Nonstop1h 25m
Fri 10/239:00 am -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$111
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/175:30 pm -
Nonstop1h 13m
Sun 10/187:18 pm -
Nonstop1h 17m
Deal found 9/15![United Airlines logo]()
$158
This Booking.com deal was found by Cheapflights users on 9/16. 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.
Mon 11/236:00 pm -
Nonstop1h 25m
Sat 11/283:45 pm -
Nonstop1h 35m
Deal found 9/16![Contour logo]()
$111
This Booking.com deal was found by Cheapflights users on 9/15. 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 10/1812:20 pm -
Nonstop1h 25m
Thu 10/223:45 pm -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$111
This Southwest deal was found by Cheapflights users on 9/16. 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 10/2012:25 pm -
1 stop5h 20m
Wed 10/218:50 pm -
Nonstop1h 10m
Deal found 9/16![Southwest logo]()
$253
This Mytrip deal was found by Cheapflights users on 9/16. 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 10/16:00 pm -
Nonstop1h 25m
Sat 10/319:00 am -
Nonstop1h 35m
Deal found 9/16![Contour logo]()
$111
This Delta deal was found by Cheapflights users on 9/15. 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 10/2012:27 pm -
1 stop4h 16m
Mon 10/262:38 pm -
1 stop3h 22m
Deal found 9/15![Delta logo]()
$281
This Booking.com deal was found by Cheapflights users on 9/15. 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.
Sat 10/176:00 pm -
Nonstop1h 25m
Tue 10/209:00 am -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$112
This American Airlines deal was found by Cheapflights users on 9/12. 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.
Wed 9/3011:00 pm -
Nonstop1h 05m
Sun 10/44:57 pm -
Nonstop1h 29m
Deal found 9/12![American Airlines logo]()
$304
This United Airlines deal was found by Cheapflights users on 9/12. 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 10/105:30 pm -
Nonstop1h 13m
Sat 10/177:18 pm -
Nonstop1h 17m
Deal found 9/12![United Airlines logo]()
$159
This Booking.com deal was found by Cheapflights users on 9/16. 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.
Thu 10/1512:20 pm -
Nonstop1h 25m
Tue 10/209:00 am -
Nonstop1h 35m
Deal found 9/16![Contour logo]()
$112
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/314:45 pm -
Nonstop1h 10m
Mon 11/26:57 pm -
Nonstop1h 28m
Deal found 9/15![United Airlines logo]()
$159
This Booking.com deal was found by Cheapflights users on 9/12. 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.
Tue 9/295:50 pm -
Nonstop1h 25m
Thu 10/13:45 pm -
Nonstop1h 35m
Deal found 9/12![Contour logo]()
$113
This United Airlines deal was found by Cheapflights users on 9/12. 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 9/265:30 pm -
Nonstop1h 13m
Wed 9/309:12 am -
Nonstop1h 17m
Deal found 9/12![United Airlines logo]()
$159
This Booking.com deal was found by Cheapflights users on 9/13. 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.
Tue 9/295:50 pm -
Nonstop1h 25m
Sat 10/39:00 am -
Nonstop1h 35m
Deal found 9/13![Contour logo]()
$113
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 10/17:25 am -
Nonstop1h 10m
Sun 10/47:18 pm -
Nonstop1h 17m
Deal found 9/16![United Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Sat 10/248:46 am -
1 stop11h 07m
Sat 11/148:33 pm -
1 stop12h 13m
Deal found 9/13![Multiple Airlines logo]()
$434
This Booking.com deal was found by Cheapflights users on 9/14. 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.
Fri 10/96:00 pm -
Nonstop1h 25m
Mon 10/123:45 pm -
Nonstop1h 35m
Deal found 9/14![Contour logo]()
$113
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/307:25 am -
Nonstop1h 10m
Fri 11/69:10 am -
Nonstop1h 09m
Deal found 9/15![United Airlines logo]()
$159
This Booking.com deal was found by Cheapflights users on 9/14. 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 10/1812:20 pm -
Nonstop1h 25m
Tue 10/209:00 am -
Nonstop1h 35m
Deal found 9/14![Contour logo]()
$113
This Southwest deal was found by Cheapflights users on 9/16. 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 10/196:30 pm -
1 stop5h 10m
Wed 10/213:35 pm -
2 stops6h 45m
Deal found 9/16![Southwest logo]()
$282
This Booking.com deal was found by Cheapflights users on 9/15. 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 11/2212:20 pm -
Nonstop1h 25m
Sun 11/293:45 pm -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$121
This Delta deal was found by Cheapflights users on 9/17. 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 10/109:29 am -
1 stop6h 08m
Mon 10/122:38 pm -
1 stop3h 22m
Deal found 9/17![Delta logo]()
$295
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/212:02 pm -
Nonstop1h 30m
Sun 10/45:00 am -
Nonstop1h 28m
Deal found 9/15![United Airlines logo]()
$194
This Delta deal was found by Cheapflights users on 9/17. 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 10/106:20 am -
1 stop4h 18m
Mon 10/122:38 pm -
1 stop3h 51m
Deal found 9/17![Delta logo]()
$295
This Southwest deal was found by Cheapflights users on 9/16. 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 10/196:30 pm -
1 stop5h 10m
Thu 10/2210:20 am -
1 stop4h 35m
Deal found 9/16![Southwest logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/12. 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.
Thu 10/2912:14 pm -
Nonstop1h 27m
Mon 11/25:30 am -
Nonstop1h 29m
Deal found 9/12![United Airlines logo]()
$194
This Southwest deal was found by Cheapflights users on 9/15. 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 10/208:50 pm -
Nonstop1h 15m
Sun 10/258:30 am -
1 stop3h 40m
Deal found 9/15![Southwest logo]()
$325
This American Airlines deal was found by Cheapflights users on 9/16. 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 10/314:55 pm -
Nonstop1h 10m
Sat 11/73:21 pm -
Nonstop1h 18m
Deal found 9/16![American Airlines logo]()
$416
This United Airlines deal was found by Cheapflights users on 9/13. 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 11/1412:14 pm -
Nonstop1h 27m
Tue 11/175:30 am -
Nonstop1h 29m
Deal found 9/13![United Airlines logo]()
$216
Last-minute flights from Chicago to IllinoisDiscover last-minute flight deals from Chicago to Illinois. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Illinois. Data last updated September 17, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 9/12. 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.
Fri 9/255:50 pm -
Nonstop1h 25m
Sun 9/273:35 pm -
Nonstop1h 35m
Deal found 9/12![Contour logo]()
$152
This Mytrip deal was found by Cheapflights users on 9/16. 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 10/16:00 pm -
Nonstop1h 25m
Mon 10/59:00 am -
Nonstop1h 35m
Deal found 9/16![Contour logo]()
$109
This Mytrip deal was found by Cheapflights users on 9/16. 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 10/16:00 pm -
Nonstop1h 25m
Sat 10/319:00 am -
Nonstop1h 35m
Deal found 9/16![Contour logo]()
$111
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Thu 10/17:25 am -
Nonstop1h 10m
Mon 10/57:18 pm -
Nonstop1h 17m
Deal found 9/16![United Airlines logo]()
$149
This Mytrip deal was found by Cheapflights users on 9/15. 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.
Fri 10/96:00 pm -
Nonstop1h 25m
Mon 10/123:45 pm -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$115
This Contour deal was found by Cheapflights users on 9/15. 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 Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:00 pm -
Nonstop1h 25m
Thu 10/159:00 am -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$129
This Expedia deal was found by Cheapflights users on 9/16. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:21 am -
1 stop11h 19m
Wed 10/216:35 pm -
1 stop5h 08m
Deal found 9/16![Frontier logo]()
$155
This Booking.com deal was found by Cheapflights users on 9/15. 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.
Sat 10/176:00 pm -
Nonstop1h 25m
Wed 10/213:45 pm -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$112
This Booking.com deal was found by Cheapflights users on 9/14. 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.
Sat 10/176:00 pm -
Nonstop1h 25m
Tue 10/209:00 am -
Nonstop1h 35m
Deal found 9/14![Contour logo]()
$113
This United Airlines deal was found by Cheapflights users on 9/15. 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 10/175:30 pm -
Nonstop1h 13m
Sun 10/187:18 pm -
Nonstop1h 17m
Deal found 9/15![United Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/207:44 pm -
1 stop21h 56m
Mon 10/266:35 pm -
1 stop18h 16m
Deal found 9/15![Frontier logo]()
$161
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2112:20 pm -
Nonstop1h 25m
Wed 10/213:45 pm -
Nonstop1h 35m
Deal found 9/15![Contour logo]()
$123
One-way flights from Chicago to IllinoisSearch for one-way flight options from Chicago to Illinois. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
Search for one-way flight options from Chicago to Illinois. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Contour deal was found by Cheapflights users on 9/12. 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 Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:00 pm -
Nonstop1h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Contour logo]()
$65
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:20 am -
1 stop6h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$68
This Super.com deal was found by Cheapflights users on 9/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:00 am -
1 stop11h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$73
This Priceline deal was found by Cheapflights users on 9/15. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:25 am -
1 stop6h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$78
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/67:28 pm -
1 stop17h 42m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$81
This Super.com deal was found by Cheapflights users on 9/16. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/146:21 am -
1 stop11h 19m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/137:44 pm -
1 stop21h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 11/176:42 pm -
1 stop22h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 9/12. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:15 am -
1 stop10h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$92
This United Airlines deal was found by Cheapflights users on 9/12. 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 9/307:25 am -
Nonstop1h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![United Airlines logo]()
$93
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Wed 11/116:16 am -
1 stop11h 24m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$94
This Super.com deal was found by Cheapflights users on 9/15. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/610:26 am -
1 stop7h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Frontier logo]()
$106
Find flight deals from Chicago to Illinois
Keep the following information in mind while searching for Chicago to Illinois flight deals. Data was last updated September 17, 2026.
Round-trip from | $109 (Mytrip) |
|---|---|
One-way from | $65 (Contour) |
Good round-trip deal | $166 or less |
Good one-way deal | $107 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago 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 7,457,451 searches. Data last updated September 17, 2026.
Use the filters below to find and compare flights from Chicago to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoBurlington
ORD Chicago O'Hare Intl - BRL Burlington
ORDBRL
Chicago O'Hare Intl
Sat 11/7
6:00 pm-7:25 pm
Nonstop1h 25m
Burlington
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$65
Quickest round-trip
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Wed 9/30
7:25 am-8:35 am
Nonstop1h 10m
Decatur Arpt
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$93
ChicagoDecatur
ORD Chicago O'Hare Intl - DEC Decatur Arpt
ORDDEC
Chicago O'Hare Intl
Wed 11/4
7:25 am-8:35 am
Nonstop1h 10m
Decatur Arpt
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$93
ChicagoBurlington
ORD Chicago O'Hare Intl - BRL Burlington
ORDBRL
Chicago O'Hare Intl
Mon 10/19
12:20 pm-1:45 pm
Nonstop1h 25m
Burlington
Fri 10/23
9:00 am-10:35 am
Nonstop1h 35m
$111
ChicagoBurlington
ORD Chicago O'Hare Intl - BRL Burlington
ORDBRL
Chicago O'Hare Intl
Mon 11/23
6:00 pm-7:25 pm
Nonstop1h 25m
Burlington
Sat 11/28
3:45 pm-5:20 pm
Nonstop1h 35m
$111
ChicagoBurlington
ORD Chicago O'Hare Intl - BRL Burlington
ORDBRL
Chicago O'Hare Intl
Sun 10/18
12:20 pm-1:45 pm
Nonstop1h 25m
Burlington
Thu 10/22
3:45 pm-5:20 pm
Nonstop1h 35m
$111
ChicagoBurlington
ORD Chicago O'Hare Intl - BRL Burlington
ORDBRL
Chicago O'Hare Intl
Thu 10/1
6:00 pm-7:25 pm
Nonstop1h 25m
Burlington
Sat 10/31
9:00 am-10:35 am
Nonstop1h 35m
$111
ChicagoBurlington
ORD Chicago O'Hare Intl - BRL Burlington
ORDBRL
Chicago O'Hare Intl
Sat 10/17
6:00 pm-7:25 pm
Nonstop1h 25m
Burlington
Tue 10/20
9:00 am-10:35 am
Nonstop1h 35m
$112
ChicagoBurlington
ORD Chicago O'Hare Intl - BRL Burlington
ORDBRL
Chicago O'Hare Intl
Thu 10/15
12:20 pm-1:45 pm
Nonstop1h 25m
Burlington
Tue 10/20
9:00 am-10:35 am
Nonstop1h 35m
$112
ChicagoBurlington
ORD Chicago O'Hare Intl - BRL Burlington
ORDBRL
Chicago O'Hare Intl
Tue 9/29
5:50 pm-7:15 pm
Nonstop1h 25m
Burlington
Thu 10/1
3:45 pm-5:20 pm
Nonstop1h 35m
$113
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Chicago to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Chicago with our price prediction graph.
ORD-BRL
ORD-DEC
MDW-STL
ORD-MLI
ORD-SPI
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 Chicago to Illinois
CHI-USIL
ORD-BRL
ORD-DEC
MDW-STL
ORD-MLI
What is the cheapest month to book a flight from Chicago to Illinois?
Currently, April is the cheapest month in which you can book a flight from Chicago to Illinois (average of $258). Flying from Chicago to Illinois in August is currently the most expensive (average of $1,109). 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 CHI to IL?
Find hourly flight availability from Chicago 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 September 17, 2026.
A simple way to save on the total cost of your ticket is to fly from Chicago to Illinois in the evening. If you’re flexible enough to do this you can expect to save up to 26% on your trip compared to booking a flight in the morning.
What is the cheapest day to fly from Chicago to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Chicago to Illinois. Price data was last updated on November 29, 2025.
Travelers seeking maximum savings on their Chicago to Illinois flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday evenings 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 September 17, 2026.
Read reviews from past customers who have flown Contour and United Airlines from Chicago to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.3
Entertainment
6.1
Overall
7.5
Crew
7.8
Food
6.8
Boarding
7.5
Reviews
1 / 2
10.0
ExcellentAnonymous,Oct 2025
CLT - PAH
Comfort
7.3
Entertainment
6.1
Overall
7.5
Crew
7.8
Food
6.8
Boarding
7.5
Reviews
1 / 2
10.0
ExcellentAnonymous,Oct 2025
CLT - PAH
Comfort
7.3
Entertainment
6.1
Overall
7.5
Crew
7.8
Food
6.8
Boarding
7.5
Reviews
1 / 2
10.0
ExcellentAnonymous,Oct 2025
CLT - PAH
Related info for your journey
Find useful and relevant information for your journey from Chicago 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 Chicago 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 Chicago to Illinois by cabin class
Find flights from Chicago to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chicago and Illinois flights
Browse other Chicago and Illinois flight options. Last updated on September 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Chicago to Illinois flights
Consider these flights traveling from Chicago to Illinois.
Top 2 airlines flying from Chicago to Illinois
Discover the top 2 airlines that operate flights from Chicago 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 7,457,451 searches. Data last updated September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$168 | Average$682 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$239 | Average$279 | FlexibilityNo cancel fee | On-time69% |