$47+ Cheap flights from Illinois to Chicago (CHI)
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 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CHI
Sep 21 — Sep 281
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Chicago 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
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Cheapest flights from Illinois to ChicagoExplore the most affordable flight options available from Illinois to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
Explore the most affordable flight options available from Illinois to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 22, 2026.
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:55 am -
Nonstop1h 45m
Sun 9/612:30 pm -
Nonstop1h 25m
Deal found 8/18![Contour logo]()
$101
This Mytrip deal was found by Cheapflights users on 8/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:25 pm -
Nonstop1h 45m
Wed 9/912:30 pm -
Nonstop1h 25m
Deal found 8/21![Contour logo]()
$102
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:55 am -
Nonstop1h 45m
Mon 9/2112:30 pm -
Nonstop1h 25m
Deal found 8/17![Contour logo]()
$103
This Mytrip deal was found by Cheapflights users on 8/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:55 am -
Nonstop1h 45m
Tue 11/312:30 pm -
Nonstop1h 25m
Deal found 8/21![Contour logo]()
$108
This Southwest deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:20 pm -
Nonstop1h 10m
Mon 9/148:55 pm -
Nonstop1h 15m
Deal found 8/18![Southwest logo]()
$117
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:00 am -
Nonstop1h 29m
Thu 9/2411:05 pm -
Nonstop1h 22m
Deal found 8/17![American Airlines logo]()
$117
This Priceline deal was found by Cheapflights users on 8/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:29 pm -
1 stop9h 15m
Wed 9/236:25 am -
1 stop6h 45m
Deal found 8/21![Frontier logo]()
$118
This Frontier deal was found by Cheapflights users on 8/21. 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.
Sat 9/1212:17 pm -
1 stop17h 21m
Mon 9/148:55 pm -
1 stop14h 37m
Deal found 8/21![Frontier logo]()
$118
This Frontier deal was found by Cheapflights users on 8/21. 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.
Mon 10/52:29 pm -
1 stop9h 15m
Mon 10/126:15 am -
1 stop11h 25m
Deal found 8/21![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:39 pm -
1 stop15h 41m
Mon 9/148:55 pm -
1 stop14h 37m
Deal found 8/17![Frontier logo]()
$119
This Booking.com deal was found by Cheapflights users on 8/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/239:55 am -
Nonstop1h 45m
Sat 12/2612:30 pm -
Nonstop1h 25m
Deal found 8/17![Contour logo]()
$124
This Super.com deal was found by Cheapflights users on 8/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:10 pm -
1 stop28h 13m
Wed 9/236:20 am -
1 stop6h 50m
Deal found 8/19![Frontier logo]()
$125
Best flights from Illinois to ChicagoDiscover carefully curated flight deals from Illinois to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
Discover carefully curated flight deals from Illinois to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 22, 2026.
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:55 am -
Nonstop1h 45m
Fri 9/2512:30 pm -
Nonstop1h 25m
Deal found 8/18![Contour logo]()
$101
This Southwest deal was found by Cheapflights users on 8/19. 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.
Thu 10/226:10 pm -
Nonstop1h 05m
Sat 10/247:10 pm -
Nonstop1h 10m
Deal found 8/19![Southwest logo]()
$117
This United Airlines deal was found by Cheapflights users on 8/22. 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 11/56:50 pm -
Nonstop1h 29m
Fri 11/610:45 am -
Nonstop1h 25m
Deal found 8/22![United Airlines logo]()
$134
This Delta deal was found by Cheapflights users on 8/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1410:14 am -
1 stop3h 45m
Tue 11/177:00 am -
1 stop6h 23m
Deal found 8/21![Delta logo]()
$157
This Booking.com deal was found by Cheapflights users on 8/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/219:55 am -
Nonstop1h 45m
Tue 11/312:30 pm -
Nonstop1h 25m
Deal found 8/21![Contour logo]()
$103
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:55 am -
Nonstop1h 45m
Mon 9/2112:30 pm -
Nonstop1h 25m
Deal found 8/17![Contour logo]()
$103
This Southwest deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/178:50 pm -
Nonstop1h 10m
Thu 9/249:20 am -
Nonstop1h 10m
Deal found 8/18![Southwest logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:40 pm -
2 stops33h 43m
Mon 9/2112:30 pm -
Nonstop1h 25m
Deal found 8/17![Multiple Airlines logo]()
$245
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/36:00 am -
Nonstop1h 19m
Mon 10/1211:00 pm -
Nonstop1h 10m
Deal found 8/21![American Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 8/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/176:05 am -
Nonstop1h 05m
Mon 10/1910:05 pm -
Nonstop1h 10m
Deal found 8/21![Southwest logo]()
$117
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:53 am -
Nonstop1h 35m
Fri 9/119:30 pm -
Nonstop1h 29m
Deal found 8/17![United Airlines logo]()
$134
This Contour deal was found by Cheapflights users on 8/21. 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 Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:25 pm -
Nonstop1h 45m
Tue 9/2212:30 pm -
Nonstop1h 25m
Deal found 8/21![Contour logo]()
$118
This Southwest deal was found by Cheapflights users on 8/19. 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 9/163:45 pm -
Nonstop1h 05m
Wed 9/233:50 pm -
1 stop4h 10m
Deal found 8/19![Southwest logo]()
$127
This United Airlines deal was found by Cheapflights users on 8/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/17:18 pm -
Nonstop1h 17m
Sun 10/45:30 pm -
Nonstop1h 13m
Deal found 8/21![United Airlines logo]()
$149
This Southwest deal was found by Cheapflights users on 8/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1412:15 pm -
Nonstop1h 10m
Tue 11/174:25 pm -
1 stop6h 00m
Deal found 8/21![Southwest logo]()
$127
This United Airlines deal was found by Cheapflights users on 8/21. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/99:12 am -
Nonstop1h 17m
Mon 10/127:25 am -
Nonstop1h 10m
Deal found 8/21![United Airlines logo]()
$149
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:55 am -
Nonstop1h 45m
Fri 9/2512:30 pm -
Nonstop1h 25m
Deal found 8/18![Contour logo]()
$147
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/149:12 am -
Nonstop1h 17m
Mon 9/215:29 pm -
Nonstop1h 14m
Deal found 8/17![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:20 pm -
Nonstop1h 17m
Mon 9/287:25 am -
Nonstop1h 10m
Deal found 8/17![United Airlines logo]()
$149
This American Airlines deal was found by Cheapflights users on 8/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/126:14 am -
Nonstop1h 16m
Mon 10/193:45 pm -
Nonstop1h 14m
Deal found 8/21![American Airlines logo]()
$249
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:12 am -
Nonstop1h 17m
Sun 9/65:59 am -
Nonstop1h 10m
Deal found 8/18![United Airlines logo]()
$159
This Mytrip deal was found by Cheapflights users on 8/20. 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.
Fri 8/289:55 am -
Nonstop1h 45m
Sun 8/3012:30 pm -
Nonstop1h 25m
Deal found 8/20![Contour logo]()
$184
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/107:18 pm -
Nonstop1h 17m
Thu 10/157:25 am -
Nonstop1h 10m
Deal found 8/18![United Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 8/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:47 pm -
1 stop3h 46m
Sun 10/46:10 am -
1 stop4h 21m
Deal found 8/20![Delta logo]()
$303
This United Airlines deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:12 am -
Nonstop1h 17m
Sun 9/65:59 am -
Nonstop1h 10m
Deal found 8/18![United Airlines logo]()
$159
This Southwest deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:10 pm -
Nonstop1h 05m
Sun 10/258:15 am -
Nonstop1h 10m
Deal found 8/20![Southwest logo]()
$232
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Sat 9/267:18 pm -
Nonstop1h 17m
Wed 10/217:25 am -
Nonstop1h 10m
Deal found 8/20![United Airlines logo]()
$159
This Delta deal was found by Cheapflights users on 8/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/255:34 pm -
1 stop4h 13m
Wed 9/231:55 pm -
1 stop6h 40m
Deal found 8/19![Delta logo]()
$332
This United Airlines deal was found by Cheapflights users on 8/19. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/197:20 pm -
Nonstop1h 17m
Fri 9/257:25 am -
Nonstop1h 10m
Deal found 8/19![United Airlines logo]()
$159
This Southwest deal was found by Cheapflights users on 8/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1610:00 pm -
Nonstop1h 05m
Sun 10/188:15 am -
Nonstop1h 10m
Deal found 8/21![Southwest logo]()
$249
Last-minute flights from Illinois to ChicagoDiscover last-minute flight deals from Illinois to Chicago. Data last updated August 22, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Chicago. Data last updated August 22, 2026 and is based on user searches.
This Mytrip deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:55 am -
Nonstop1h 45m
Sun 9/612:30 pm -
Nonstop1h 25m
Deal found 8/18![Contour logo]()
$101
This Mytrip deal was found by Cheapflights users on 8/21. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:25 pm -
Nonstop1h 45m
Wed 9/912:30 pm -
Nonstop1h 25m
Deal found 8/21![Contour logo]()
$102
This Southwest deal was found by Cheapflights users on 8/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/102:20 pm -
Nonstop1h 10m
Mon 9/148:55 pm -
Nonstop1h 15m
Deal found 8/18![Southwest logo]()
$117
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:39 pm -
1 stop15h 41m
Mon 9/148:55 pm -
1 stop14h 37m
Deal found 8/17![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 8/21. 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.
Sat 9/1212:17 pm -
1 stop17h 21m
Mon 9/148:55 pm -
1 stop14h 37m
Deal found 8/21![Frontier logo]()
$118
This Southwest deal was found by Cheapflights users on 8/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:45 am -
2 stops6h 20m
Mon 9/148:55 pm -
Nonstop1h 15m
Deal found 8/21![Southwest logo]()
$132
This Super.com deal was found by Cheapflights users on 8/19. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/168:10 pm -
1 stop28h 13m
Wed 9/236:20 am -
1 stop6h 50m
Deal found 8/19![Frontier logo]()
$125
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:00 am -
Nonstop1h 29m
Thu 9/2411:05 pm -
Nonstop1h 22m
Deal found 8/17![American Airlines logo]()
$117
This Mytrip deal was found by Cheapflights users on 8/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/189:55 am -
Nonstop1h 45m
Mon 9/2112:30 pm -
Nonstop1h 25m
Deal found 8/17![Contour logo]()
$103
This Priceline deal was found by Cheapflights users on 8/17. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:29 pm -
1 stop9h 15m
Mon 9/216:25 am -
1 stop6h 45m
Deal found 8/17![Frontier logo]()
$130
This Southwest deal was found by Cheapflights users on 8/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/188:50 pm -
Nonstop1h 10m
Mon 9/218:55 pm -
Nonstop1h 15m
Deal found 8/17![Southwest logo]()
$134
This Priceline deal was found by Cheapflights users on 8/21. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:29 pm -
1 stop9h 15m
Wed 9/236:25 am -
1 stop6h 45m
Deal found 8/21![Frontier logo]()
$118
One-way flights from Illinois to ChicagoSearch for one-way flight options from Illinois to Chicago. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
Search for one-way flight options from Illinois to Chicago. Find affordable one-way fares based on user searches. Data last updated August 22, 2026.
This Booking.com deal was found by Cheapflights users on 8/20. 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.
Fri 9/49:55 am -
Nonstop1h 45m
Deal found 8/20![Contour logo]()
$47
This Booking.com deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:55 am -
Nonstop1h 45m
Deal found 8/22![Contour logo]()
$52
This Booking.com deal was found by Cheapflights users on 8/17. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/19:55 am -
Nonstop1h 45m
Deal found 8/17![Contour logo]()
$58
This Southwest deal was found by Cheapflights users on 8/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/214:05 pm -
Nonstop1h 05m
Deal found 8/21![Southwest logo]()
$59
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:00 am -
Nonstop1h 31m
Deal found 8/17![United Airlines logo]()
$59
This American Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/145:00 am -
Nonstop1h 29m
Deal found 8/20![American Airlines logo]()
$60
This Super.com deal was found by Cheapflights users on 8/20. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:20 am -
1 stop9h 15m
Deal found 8/20![Frontier logo]()
$64
This Frontier deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/212:29 pm -
1 stop9h 15m
Deal found 8/19![Frontier logo]()
$65
This Frontier deal was found by Cheapflights users on 8/17. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/110:20 am -
1 stop9h 15m
Deal found 8/17![Frontier logo]()
$65
This Trip.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:29 pm -
1 stop9h 15m
Deal found 8/20![Frontier logo]()
$66
This CheapOair deal was found by Cheapflights users on 8/17. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:10 pm -
1 stop28h 13m
Deal found 8/17![Frontier logo]()
$66
This Trip.com deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/282:29 pm -
1 stop9h 15m
Deal found 8/20![Frontier logo]()
$67
Find flight deals from Illinois to Chicago
Keep the following information in mind while searching for Illinois to Chicago flight deals. Data was last updated August 22, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $101 (Mytrip) |
One-way from | $47 (Booking.com) |
Popular in | August |
Cheapest in | February |
Average price | $520 |
Good round-trip deal | $324 or less |
Good one-way deal | $174 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Chicago 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 August 22, 2026.
Use the filters below to find and compare flights from Illinois to Chicago that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
QuincyChicago
UIN Quincy Regional - ORD Chicago O'Hare Intl
UINORD
Quincy Regional
Fri 9/18
9:55 am-11:40 am
Nonstop1h 45m
Chicago O'Hare Intl
Fri 9/25
12:30 pm-1:55 pm
Nonstop1h 25m
$101
QuincyChicago
UIN Quincy Regional - ORD Chicago O'Hare Intl
UINORD
Quincy Regional
Wed 10/21
9:55 am-11:40 am
Nonstop1h 45m
Chicago O'Hare Intl
Tue 11/3
12:30 pm-1:55 pm
Nonstop1h 25m
$103
QuincyChicago
UIN Quincy Regional - ORD Chicago O'Hare Intl
UINORD
Quincy Regional
Fri 9/18
9:55 am-11:40 am
Nonstop1h 45m
Chicago O'Hare Intl
Mon 9/21
12:30 pm-1:55 pm
Nonstop1h 25m
$103
Quickest round-trip
St. LouisChicago
STL Lambert-St Louis - MDW Chicago Midway
STLMDW
Lambert-St Louis
Thu 10/22
6:10 pm-7:15 pm
Nonstop1h 05m
Chicago Midway
Sat 10/24
7:10 pm-8:20 pm
Nonstop1h 10m
$117
St. LouisChicago
STL Lambert-St Louis - MDW Chicago Midway
STLMDW
Lambert-St Louis
Thu 9/17
8:50 pm-10:00 pm
Nonstop1h 10m
Chicago Midway
Thu 9/24
9:20 am-10:30 am
Nonstop1h 10m
$117
St. LouisChicago
STL Lambert-St Louis - MDW Chicago Midway
STLMDW
Lambert-St Louis
Sat 10/17
6:05 am-7:10 am
Nonstop1h 05m
Chicago Midway
Mon 10/19
10:05 pm-11:15 pm
Nonstop1h 10m
$117
QuincyChicago
UIN Quincy Regional - ORD Chicago O'Hare Intl
UINORD
Quincy Regional
Sat 9/19
3:25 pm-5:10 pm
Nonstop1h 45m
Chicago O'Hare Intl
Tue 9/22
12:30 pm-1:55 pm
Nonstop1h 25m
$118
St. LouisChicago
STL Lambert-St Louis - MDW Chicago Midway
STLMDW
Lambert-St Louis
Wed 9/16
3:45 pm-4:50 pm
Nonstop1h 05m
Chicago Midway
Wed 9/23
3:50 pm-8:00 pm
1 stop4h 10m
$127
St. LouisChicago
STL Lambert-St Louis - MDW Chicago Midway
STLMDW
Lambert-St Louis
Sat 11/14
12:15 pm-1:25 pm
Nonstop1h 10m
Chicago Midway
Tue 11/17
4:25 pm-10:25 pm
1 stop6h 00m
$127
St. LouisChicago
STL Lambert-St Louis - ORD Chicago O'Hare Intl
STLORD
Lambert-St Louis
Thu 11/5
6:50 pm-8:19 pm
Nonstop1h 29m
Chicago O'Hare Intl
Fri 11/6
10:45 am-12:10 pm
Nonstop1h 25m
$134
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Illinois with our price prediction graph.
UIN-ORD
STL-MDW
STL-ORD
PIA-ORD
DEC-ORD
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 Illinois to Chicago
USIL-CHI
UIN-ORD
STL-MDW
STL-ORD
PIA-ORD
What is the cheapest month to book a flight from Illinois to Chicago?
Currently, December is the cheapest month in which you can book a flight from Illinois to Chicago (average of $182). Flying from Illinois to Chicago in April is currently the most expensive (average of $355). 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 IL to CHI?
Find hourly flight availability from Illinois to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 22, 2026.
When flying from Illinois to Chicago, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 16% versus a flight at noon.
What is the cheapest day to fly from Illinois to Chicago?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Chicago. Price data was last updated on August 22, 2026.
Travelers seeking maximum savings on their Illinois to Chicago flight should consider departing on Thursday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Chicago
Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated August 22, 2026.
Get a feel of what it's like to fly with Contour,United Airlines, andAmerican Airlines from Illinois to Chicago by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
6.1
Overall
7.5
Comfort
7.3
Crew
7.8
Boarding
7.5
Food
6.8
Reviews
1 / 2
10.0
ExcellentAnonymous,Oct 2025
CLT - PAH
Entertainment
6.1
Overall
7.5
Comfort
7.3
Crew
7.8
Boarding
7.5
Food
6.8
Reviews
1 / 2
10.0
ExcellentAnonymous,Oct 2025
CLT - PAH
Entertainment
6.1
Overall
7.5
Comfort
7.3
Crew
7.8
Boarding
7.5
Food
6.8
Reviews
1 / 2
10.0
ExcellentAnonymous,Oct 2025
CLT - PAH
Entertainment
6.1
Overall
7.5
Comfort
7.3
Crew
7.8
Boarding
7.5
Food
6.8
Reviews
1 / 2
10.0
ExcellentAnonymous,Oct 2025
CLT - PAH
Related info for your journey
Find useful and relevant information for your journey from Illinois to Chicago. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Chicago?
Book flights to Chicago if you plan to visit one of these locationsBenton Harbor
Lansing
Merrillville
Valparaiso
Hammond
Saint Joseph
Porter
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
Chicago flight routes
Complete your trip
Flights by cabin class
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Alternative routes for Illinois to Chicago
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Chicago
Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 22, 2026.
Complete your trip
Complete your trip to Chicago by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Chicago by cabin class
Find flights from Illinois to Chicago, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Chicago flights
Browse other Illinois and Chicago flight options. Last updated on August 22, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Chicago flights
Consider these flights traveling from Illinois to Chicago.
Top 2 airlines flying from Illinois to Chicago
Discover the top 2 airlines that operate flights from Illinois to Chicago. 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 August 22, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$239 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$179 | Average$478 | FlexibilityNo cancel fee | On-time71% |