$42+ 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 3/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — CHI
Mar 13 — Mar 201
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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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 Illinois to Chicago
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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 February 11, 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 February 11, 2026.
This Mytrip deal was found by Cheapflights users on 2/10. 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 2/259:00 am
BRL
- ORD
Nonstop1h 10m
Contour
Sun 3/16:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/10![Contour logo]()
$84
This Mytrip deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/239:00 am
BRL
- ORD
Nonstop1h 10m
Contour
Fri 2/2710:50 am
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/7![Contour logo]()
$85
This Mytrip deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/158:45 am
BRL
- ORD
Nonstop1h 25m
Contour
Sun 3/226:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/10![Contour logo]()
$86
This Mytrip deal was found by Cheapflights users on 2/11. 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 2/264:25 pm
BRL
- ORD
Nonstop1h 20m
Contour
Mon 3/26:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/11![Contour logo]()
$87
This Contour deal was found by Cheapflights users on 2/9. 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.
Tue 3/178:45 am
BRL
- ORD
Nonstop1h 25m
Contour
Sun 3/226:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/9![Contour logo]()
$100
This Contour deal was found by Cheapflights users on 2/8. 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 2/169:00 am
BRL
- ORD
Nonstop1h 10m
Contour
Wed 2/256:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/8![Contour logo]()
$125
This Mytrip deal was found by Cheapflights users on 2/10. 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 2/209:00 am
BRL
- ORD
Nonstop1h 10m
Contour
Mon 2/236:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/10![Contour logo]()
$132
This United Airlines deal was found by Cheapflights users on 2/10. 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 2/259:50 am
DEC
- ORD
Nonstop1h 10m
United Airlines
Sun 3/17:45 am
ORD
- DEC
Nonstop1h 07m
United Airlines
Deal found 2/10![United Airlines logo]()
$149
This United Airlines deal was found by Cheapflights users on 2/8. 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 3/287:15 pm
DEC
- ORD
Nonstop1h 10m
United Airlines
Sun 4/57:45 am
ORD
- DEC
Nonstop1h 13m
United Airlines
Deal found 2/8![United Airlines logo]()
$159
This United Airlines deal was found by Cheapflights users on 2/10. 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 2/267:15 pm
DEC
- ORD
Nonstop1h 10m
United Airlines
Sun 3/17:45 am
ORD
- DEC
Nonstop1h 07m
United Airlines
Deal found 2/10![United Airlines logo]()
$160
This American Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:58 pm
CMI
- ORD
Nonstop1h 20m
American Airlines
Mon 5/45:21 pm
ORD
- CMI
Nonstop1h 07m
American Airlines
Deal found 2/11![American Airlines logo]()
$169
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Sun 3/86:35 am
PIA
- ORD
Nonstop1h 25m
United Airlines
Sun 3/159:15 pm
ORD
- PIA
Nonstop1h 05m
United Airlines
Deal found 2/8![United Airlines logo]()
$179
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 February 11, 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 February 11, 2026.
This Mytrip deal was found by Cheapflights users on 2/10. 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 5/99:10 am
BRL
- ORD
Nonstop1h 25m
Contour
Tue 5/126:45 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/10![Contour logo]()
$84
This United Airlines deal was found by Cheapflights users on 2/11. 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 4/187:20 pm
DEC
- ORD
Nonstop1h 13m
United Airlines
Sun 4/264:49 pm
ORD
- DEC
Nonstop1h 08m
United Airlines
Deal found 2/11![United Airlines logo]()
$149
This Mytrip deal was found by Cheapflights users on 2/10. 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 2/259:00 am
BRL
- ORD
Nonstop1h 10m
Contour
Sun 3/16:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/10![Contour logo]()
$84
This American Airlines deal was found by Cheapflights users on 2/10. 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 3/219:53 am
CMI
- ORD
Nonstop1h 09m
American Airlines
Sat 3/2810:29 am
ORD
- CMI
Nonstop1h 02m
American Airlines
Deal found 2/10![American Airlines logo]()
$169
This Mytrip deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/239:00 am
BRL
- ORD
Nonstop1h 10m
Contour
Fri 2/2710:50 am
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/7![Contour logo]()
$85
This Delta deal was found by Cheapflights users on 2/11. 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 3/56:35 am
STL
- MDW
1 stop6h 11m
Delta
Mon 3/91:10 pm
MDW
- STL
1 stop3h 22m
Delta
Deal found 2/11![Delta logo]()
$191
This Southwest deal was found by Cheapflights users on 2/10. 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 4/1110:35 am
STL
- MDW
1 stop6h 25m
Southwest
Sat 5/910:30 am
MDW
- STL
2 stops7h 40m
Southwest
Deal found 2/10![Southwest logo]()
$196
This Mytrip deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/304:20 pm
BRL
- ORD
Nonstop1h 25m
Contour
Tue 4/76:45 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/9![Contour logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 2/10. 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.
Fri 4/179:55 pm
STL
- ORD
2 stops25h 42m
Multiple Airlines
Wed 4/221:35 pm
ORD
- STL
1 stop20h 55m
Multiple Airlines
Deal found 2/10![Multiple Airlines logo]()
$212
This CheapOair deal was found by Cheapflights users on 2/11. 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 2/253:49 pm
STL
- ORD
1 stop18h 57m
Frontier
Fri 2/273:11 pm
ORD
- STL
1 stop9h 16m
Frontier
Deal found 2/11![Frontier logo]()
$213
This Mytrip deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/158:45 am
BRL
- ORD
Nonstop1h 25m
Contour
Sun 3/226:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/10![Contour logo]()
$86
This Mytrip deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/294:20 pm
BRL
- ORD
Nonstop1h 25m
Contour
Tue 4/76:45 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/9![Contour logo]()
$86
This Mytrip deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/209:10 am
BRL
- ORD
Nonstop1h 25m
Contour
Thu 4/236:45 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/9![Contour logo]()
$86
This United Airlines deal was found by Cheapflights users on 2/10. 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 2/259:50 am
DEC
- ORD
Nonstop1h 10m
United Airlines
Sun 3/17:45 am
ORD
- DEC
Nonstop1h 07m
United Airlines
Deal found 2/10![United Airlines logo]()
$149
This Mytrip deal was found by Cheapflights users on 2/11. 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 2/264:25 pm
BRL
- ORD
Nonstop1h 20m
Contour
Mon 3/26:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/11![Contour logo]()
$87
This United Airlines deal was found by Cheapflights users on 2/7. 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 3/77:15 pm
DEC
- ORD
Nonstop1h 10m
United Airlines
Sat 3/144:49 pm
ORD
- DEC
Nonstop1h 04m
United Airlines
Deal found 2/7![United Airlines logo]()
$149
This American Airlines deal was found by Cheapflights users on 2/10. 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 4/19:52 am
CMI
- ORD
Nonstop1h 09m
American Airlines
Sun 4/58:20 am
ORD
- CMI
Nonstop1h 02m
American Airlines
Deal found 2/10![American Airlines logo]()
$169
This American Airlines deal was found by Cheapflights users on 2/10. 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 3/113:47 pm
CMI
- ORD
Nonstop1h 10m
American Airlines
Wed 3/188:20 am
ORD
- CMI
Nonstop1h 02m
American Airlines
Deal found 2/10![American Airlines logo]()
$169
This Delta deal was found by Cheapflights users on 2/10. 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 3/2812:28 pm
STL
- MDW
1 stop6h 12m
Delta
Sat 4/49:30 am
MDW
- STL
1 stop4h 54m
Delta
Deal found 2/10![Delta logo]()
$191
This United Airlines deal was found by Cheapflights users on 2/10. 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 2/257:15 pm
DEC
- ORD
Nonstop1h 10m
United Airlines
Wed 3/47:45 am
ORD
- DEC
Nonstop1h 07m
United Airlines
Deal found 2/10![United Airlines logo]()
$159
This Contour deal was found by Cheapflights users on 2/9. 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.
Tue 2/249:00 am
BRL
- ORD
Nonstop1h 10m
Contour
Sat 2/2810:50 am
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/9![Contour logo]()
$100
This Southwest deal was found by Cheapflights users on 2/9. 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 4/65:30 am
STL
- MDW
Nonstop1h 10m
Southwest
Thu 4/97:50 am
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 2/9![Southwest logo]()
$201
This American Airlines deal was found by Cheapflights users on 2/8. 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 3/93:47 pm
CMI
- ORD
Nonstop1h 10m
American Airlines
Mon 3/168:26 pm
ORD
- CMI
Nonstop1h 04m
American Airlines
Deal found 2/8![American Airlines logo]()
$169
This Delta deal was found by Cheapflights users on 2/10. 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 3/2810:50 am
STL
- ORD
1 stop5h 28m
Delta
Sat 4/49:35 am
ORD
- STL
1 stop4h 49m
Delta
Deal found 2/10![Delta logo]()
$191
This United Airlines deal was found by Cheapflights users on 2/11. 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 2/267:15 pm
DEC
- ORD
Nonstop1h 10m
United Airlines
Mon 3/27:45 am
ORD
- DEC
Nonstop1h 07m
United Airlines
Deal found 2/11![United Airlines logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 2/9. 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.
Fri 3/61:09 pm
STL
- ORD
1 stop9h 30m
Frontier
Sat 3/74:23 pm
ORD
- STL
1 stop13h 34m
Frontier
Deal found 2/9![Frontier logo]()
$214
This Contour deal was found by Cheapflights users on 2/8. 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.
Fri 3/204:20 pm
BRL
- ORD
Nonstop1h 25m
Contour
Sun 3/226:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/8![Contour logo]()
$100
This American Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:58 pm
CMI
- ORD
Nonstop1h 20m
American Airlines
Mon 5/45:21 pm
ORD
- CMI
Nonstop1h 07m
American Airlines
Deal found 2/8![American Airlines logo]()
$169
This Southwest deal was found by Cheapflights users on 2/7. 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 4/225:35 am
STL
- MDW
Nonstop1h 10m
Southwest
Fri 4/2411:40 am
MDW
- STL
Nonstop1h 15m
Southwest
Deal found 2/7![Southwest logo]()
$207
This Delta deal was found by Cheapflights users on 2/11. 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 3/56:47 pm
STL
- ORD
1 stop5h 09m
Delta
Mon 3/95:59 pm
ORD
- STL
1 stop5h 59m
Delta
Deal found 2/11![Delta logo]()
$191
Last-minute flights from Illinois to ChicagoDiscover last-minute flight deals from Illinois to Chicago. Data last updated February 11, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Chicago. Data last updated February 11, 2026 and is based on user searches.
This Contour deal was found by Cheapflights users on 2/7. 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 2/164:25 pm
BRL
- ORD
Nonstop1h 20m
Contour
Wed 2/2510:50 am
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/7![Contour logo]()
$125
This Mytrip deal was found by Cheapflights users on 2/10. 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 2/209:00 am
BRL
- ORD
Nonstop1h 10m
Contour
Mon 2/236:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/10![Contour logo]()
$132
This Mytrip deal was found by Cheapflights users on 2/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/239:00 am
BRL
- ORD
Nonstop1h 10m
Contour
Fri 2/2710:50 am
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/7![Contour logo]()
$85
This Mytrip deal was found by Cheapflights users on 2/10. 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 2/259:00 am
BRL
- ORD
Nonstop1h 10m
Contour
Sun 3/16:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/10![Contour logo]()
$84
This United Airlines deal was found by Cheapflights users on 2/10. 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 2/259:50 am
DEC
- ORD
Nonstop1h 10m
United Airlines
Sun 3/17:45 am
ORD
- DEC
Nonstop1h 07m
United Airlines
Deal found 2/10![United Airlines logo]()
$149
This Mytrip deal was found by Cheapflights users on 2/11. 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 2/264:25 pm
BRL
- ORD
Nonstop1h 20m
Contour
Mon 3/26:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/11![Contour logo]()
$87
This United Airlines deal was found by Cheapflights users on 2/10. 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 2/267:15 pm
DEC
- ORD
Nonstop1h 10m
United Airlines
Sun 3/17:45 am
ORD
- DEC
Nonstop1h 07m
United Airlines
Deal found 2/10![United Airlines logo]()
$160
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Sun 3/86:35 am
PIA
- ORD
Nonstop1h 25m
United Airlines
Sun 3/159:15 pm
ORD
- PIA
Nonstop1h 05m
United Airlines
Deal found 2/8![United Airlines logo]()
$179
This American Airlines deal was found by Cheapflights users on 2/8. 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 3/93:47 pm
CMI
- ORD
Nonstop1h 10m
American Airlines
Mon 3/168:26 pm
ORD
- CMI
Nonstop1h 04m
American Airlines
Deal found 2/8![American Airlines logo]()
$169
This Mytrip deal was found by Cheapflights users on 2/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/158:45 am
BRL
- ORD
Nonstop1h 25m
Contour
Sun 3/226:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/10![Contour logo]()
$86
This Contour deal was found by Cheapflights users on 2/8. 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.
Tue 3/178:45 am
BRL
- ORD
Nonstop1h 25m
Contour
Sun 3/226:25 pm
ORD
- BRL
Nonstop1h 20m
Contour
Deal found 2/8![Contour logo]()
$100
This United Airlines deal was found by Cheapflights users on 2/9. 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 3/287:15 pm
DEC
- ORD
Nonstop1h 10m
United Airlines
Sun 4/54:49 pm
ORD
- DEC
Nonstop1h 08m
United Airlines
Deal found 2/9![United Airlines logo]()
$159
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 February 11, 2026.
Search for one-way flight options from Illinois to Chicago. Find affordable one-way fares based on user searches. Data last updated February 11, 2026.
This Booking.com deal was found by Cheapflights users on 2/9. 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 3/164:20 pm
BRL
- ORD
Nonstop1h 25m
Contour
Deal found 2/9![Contour logo]()
$42
This Southwest deal was found by Cheapflights users on 2/9. 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 4/45:10 am
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 2/9![Southwest logo]()
$43
This United Airlines deal was found by Cheapflights users on 2/8. 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 3/288:17 am
STL
- ORD
Nonstop1h 33m
United Airlines
Deal found 2/8![United Airlines logo]()
$45
This Southwest deal was found by Cheapflights users on 2/9. 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 3/35:55 pm
STL
- MDW
Nonstop1h 10m
Southwest
Deal found 2/9![Southwest logo]()
$49
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Tue 5/127:45 am
STL
- ORD
Nonstop1h 27m
United Airlines
Deal found 2/9![United Airlines logo]()
$49
This American Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:05 am
STL
- ORD
Nonstop1h 31m
American Airlines
Deal found 2/9![American Airlines logo]()
$50
This Southwest deal was found by Cheapflights users on 2/9. 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 5/210:55 am
STL
- MDW
1 stop3h 45m
Southwest
Deal found 2/9![Southwest logo]()
$53
This Southwest deal was found by Cheapflights users on 2/9. 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 4/2510:55 am
STL
- ORD
1 stop4h 35m
Southwest
Deal found 2/9![Southwest logo]()
$53
This Southwest deal was found by Cheapflights users on 2/9. 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 3/36:20 am
STL
- ORD
1 stop6h 40m
Southwest
Deal found 2/9![Southwest logo]()
$59
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 3/92:09 pm
STL
- ORD
1 stop18h 14m
Frontier
Deal found 2/9![Frontier logo]()
$61
This Kiwi.com deal was found by Cheapflights users on 2/9. 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 2/258:17 pm
STL
- MDW
1 stop19h 59m
Frontier
Deal found 2/9![Frontier logo]()
$67
This Kiwi.com deal was found by Cheapflights users on 2/10. 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 3/1111:32 am
STL
- MDW
1 stop10h 47m
Frontier
Deal found 2/10![Frontier logo]()
$68
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 February 11, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $84 (Mytrip) |
One-way from | $42 (Booking.com) |
Popular in | July |
Cheapest in | April |
Average price | $184 |
Good round-trip deal | $98 or less |
Good one-way deal | $43 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 2,558,603 searches. Data last updated February 11, 2026.
Use the filters below to find and compare flights from Illinois to Chicago that are best for you.
Fly from
Illinois
Fly to
Chicago
Route
Depart
Return
Price
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
Sat 5/9
9:10 am-10:35 am
Nonstop1h 25m
Chicago O'Hare Intl
Tue 5/12
6:45 pm-8:05 pm
Nonstop1h 20m
$84
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
Wed 2/25
9:00 am-10:10 am
Nonstop1h 10m
Chicago O'Hare Intl
Sun 3/1
6:25 pm-7:45 pm
Nonstop1h 20m
$84
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
Mon 2/23
9:00 am-10:10 am
Nonstop1h 10m
Chicago O'Hare Intl
Fri 2/27
10:50 am-12:10 pm
Nonstop1h 20m
$85
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
Mon 3/30
4:20 pm-5:45 pm
Nonstop1h 25m
Chicago O'Hare Intl
Tue 4/7
6:45 pm-8:05 pm
Nonstop1h 20m
$85
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
Sun 3/15
8:45 am-10:10 am
Nonstop1h 25m
Chicago O'Hare Intl
Sun 3/22
6:25 pm-7:45 pm
Nonstop1h 20m
$86
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
Sun 3/29
4:20 pm-5:45 pm
Nonstop1h 25m
Chicago O'Hare Intl
Tue 4/7
6:45 pm-8:05 pm
Nonstop1h 20m
$86
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
Mon 4/20
9:10 am-10:35 am
Nonstop1h 25m
Chicago O'Hare Intl
Thu 4/23
6:45 pm-8:05 pm
Nonstop1h 20m
$86
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
Thu 2/26
4:25 pm-5:45 pm
Nonstop1h 20m
Chicago O'Hare Intl
Mon 3/2
6:25 pm-7:45 pm
Nonstop1h 20m
$87
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
Tue 2/24
9:00 am-10:10 am
Nonstop1h 10m
Chicago O'Hare Intl
Sat 2/28
10:50 am-12:10 pm
Nonstop1h 20m
$100
BurlingtonChicago
BRL - ORD
BRLORD
Burlington
Fri 3/20
4:20 pm-5:45 pm
Nonstop1h 25m
Chicago O'Hare Intl
Sun 3/22
6:25 pm-7:45 pm
Nonstop1h 20m
$100
Showing 1-10 of 60 results
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.
BRL-ORD
DEC-ORD
CMI-ORD
STL-MDW
STL-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
BRL-ORD
DEC-ORD
CMI-ORD
STL-MDW
What is the cheapest month to book a flight from Illinois to Chicago?
Currently, May is the cheapest month in which you can book a flight from Illinois to Chicago (average of $158). Flying from Illinois to Chicago in April is currently the most expensive (average of $243). 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 February 11, 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 morning, which can drop the price by up to 17% 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 February 7, 2026.
Travelers seeking maximum savings on their Illinois to Chicago flight should consider departing on Friday evenings when fares are most often at their lowest. Tuesday evenings 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 February 11, 2026.
Get a feel of what it's like to fly with Contour, United Airlines, and American 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.
Crew
7.9
Boarding
7.6
Overall
7.6
Entertainment
6.1
Comfort
7.3
Food
6.8
Reviews
1 / 2
10.0
ExcellentAnonymous,Oct 2025
CLT - PAH
Crew
7.9
Boarding
7.6
Overall
7.6
Entertainment
6.1
Comfort
7.3
Food
6.8
Reviews
1 / 2
10.0
ExcellentAnonymous,Oct 2025
CLT - PAH
Crew
7.9
Boarding
7.6
Overall
7.6
Entertainment
6.1
Comfort
7.3
Food
6.8
Reviews
1 / 2
10.0
ExcellentAnonymous,Oct 2025
CLT - PAH
Crew
7.9
Boarding
7.6
Overall
7.6
Entertainment
6.1
Comfort
7.3
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 locationsLansing
Merrillville
Hammond
Porter
Benton Harbor
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.
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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 February 11, 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 February 11, 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 2,558,603 searches. Data last updated February 11, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$179 | Average$263 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$179 | Average$467 | FlexibilityNo cancel fee | On-time71% |