$59+ Cheap flights from Ohio to Illinois
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/19. Fares are subject to change and may not be available on all flights or dates of travel.
CLE — ORD
Aug 30 — Sep 61
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Ohio to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Ohio to Illinois
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ohio to IllinoisExplore the most affordable flight options available from Ohio to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2026.
Explore the most affordable flight options available from Ohio to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 31, 2026.
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:40 am
CLE
- MDW
2 stops6h 35m
Southwest
Mon 8/244:25 pm
MDW
- CLE
Nonstop1h 15m
Southwest
Deal found 7/30![Southwest logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
DTW
- STL
1 stop12h 22m
Frontier
Mon 8/316:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 7/25![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:00 am
DTW
- STL
1 stop12h 22m
Frontier
Mon 9/76:17 pm
STL
- DTW
1 stop14h 03m
Frontier
Deal found 7/26![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/36:00 am
DTW
- STL
1 stop12h 22m
Frontier
Mon 9/76:17 pm
STL
- DTW
1 stop14h 03m
Frontier
Deal found 7/27![Frontier logo]()
$135
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/249:59 pm
CLE
- ORD
1 stop13h 21m
Frontier
Mon 9/287:11 am
ORD
- CLE
1 stop11h 51m
Frontier
Deal found 7/30![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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.
Sun 8/306:00 am
DTW
- STL
1 stop12h 22m
Frontier
Mon 8/316:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 7/26![Frontier logo]()
$137
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/206:05 pm
CLE
- MDW
1 stop5h 15m
Southwest
Mon 8/247:30 am
MDW
- CLE
1 stop3h 45m
Southwest
Deal found 7/27![Southwest logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Sun 8/308:46 pm
DTW
- STL
1 stop21h 36m
Frontier
Fri 9/46:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 7/27![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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.
Sun 9/133:25 pm
DTW
- STL
1 stop22h 45m
Frontier
Fri 9/252:29 pm
STL
- DTW
1 stop20h 22m
Frontier
Deal found 7/29![Frontier logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/196:40 pm
DTW
- STL
1 stop23h 42m
Frontier
Mon 8/246:17 pm
STL
- DTW
1 stop14h 03m
Frontier
Deal found 7/29![Frontier logo]()
$144
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/307:00 am
DTW
- STL
1 stop7h 10m
Frontier
Mon 10/1210:35 am
STL
- DTW
1 stop27h 08m
Frontier
Deal found 7/26![Frontier logo]()
$145
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:40 am
CLE
- MDW
2 stops6h 35m
Southwest
Wed 8/2612:45 pm
MDW
- CLE
2 stops7h 15m
Southwest
Deal found 7/29![Southwest logo]()
$147
Best flights from Ohio to IllinoisDiscover carefully curated flight deals from Ohio to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2026.
Discover carefully curated flight deals from Ohio to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 31, 2026.
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 10/76:15 am
CLE
- MDW
2 stops6h 50m
Southwest
Thu 10/85:00 am
MDW
- CLE
1 stop6h 00m
Southwest
Deal found 7/30![Southwest logo]()
$142
This Delta deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/298:28 am
CLE
- ORD
1 stop3h 09m
Delta
Tue 10/68:29 am
ORD
- CLE
1 stop4h 10m
Delta
Deal found 7/26![Delta logo]()
$157
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 10/96:10 pm
CLE
- ORD
Nonstop1h 40m
United Airlines
Wed 10/1410:40 am
ORD
- CLE
Nonstop1h 31m
United Airlines
Deal found 7/30![United Airlines logo]()
$168
This JetBlue deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:00 am
PIT
- ORD
1 stop8h 49m
JetBlue
Wed 9/99:38 am
ORD
- PIT
1 stop9h 03m
JetBlue
Deal found 7/26![JetBlue logo]()
$250
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/253:49 pm
CLE
- ORD
1 stop5h 41m
Delta
Sat 8/295:18 pm
ORD
- CLE
1 stop3h 04m
Delta
Deal found 7/29![Delta logo]()
$157
This Southwest deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/226:10 am
CLE
- MDW
2 stops8h 10m
Southwest
Sat 8/295:55 am
MDW
- CLE
1 stop5h 20m
Southwest
Deal found 7/25![Southwest logo]()
$159
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:14 pm
CLE
- ORD
Nonstop1h 38m
United Airlines
Mon 9/219:30 pm
ORD
- CLE
Nonstop1h 29m
United Airlines
Deal found 7/30![United Airlines logo]()
$168
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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.
Wed 8/263:49 pm
CLE
- ORD
1 stop5h 41m
Delta
Sat 8/295:18 pm
ORD
- CLE
1 stop3h 04m
Delta
Deal found 7/30![Delta logo]()
$157
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 10/88:20 pm
CLE
- MDW
Nonstop1h 15m
Southwest
Fri 10/96:45 pm
MDW
- CLE
Nonstop1h 10m
Southwest
Deal found 7/29![Southwest logo]()
$168
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:30 am
CLE
- ORD
Nonstop1h 37m
United Airlines
Wed 9/98:45 am
ORD
- CLE
Nonstop1h 42m
United Airlines
Deal found 7/29![United Airlines logo]()
$168
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/128:10 am
CLE
- ORD
1 stop3h 20m
Delta
Mon 10/127:30 pm
ORD
- CLE
1 stop3h 16m
Delta
Deal found 7/30![Delta logo]()
$164
This United Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/46:17 pm
CLE
- ORD
Nonstop1h 40m
United Airlines
Sun 9/610:38 am
ORD
- CLE
Nonstop1h 31m
United Airlines
Deal found 7/26![United Airlines logo]()
$173
This Southwest deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:30 pm
CLE
- MDW
1 stop3h 25m
Southwest
Fri 9/188:05 am
MDW
- CLE
Nonstop1h 20m
Southwest
Deal found 7/25![Southwest logo]()
$178
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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.
Wed 10/286:04 am
CVG
- ORD
1 stop5h 26m
Delta
Sat 10/317:10 am
ORD
- CVG
1 stop6h 00m
Delta
Deal found 7/29![Delta logo]()
$177
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/43:50 pm
CLE
- MDW
1 stop6h 10m
Southwest
Sun 9/69:25 am
MDW
- CLE
Nonstop1h 15m
Southwest
Deal found 7/29![Southwest logo]()
$183
This JetBlue deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:15 am
PIT
- ORD
1 stop8h 24m
JetBlue
Tue 9/111:01 am
ORD
- PIT
1 stop5h 46m
JetBlue
Deal found 7/30![JetBlue logo]()
$265
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/1310:52 am
CLE
- ORD
Nonstop1h 37m
United Airlines
Sat 9/198:47 am
ORD
- CLE
Nonstop1h 42m
United Airlines
Deal found 7/30![United Airlines logo]()
$202
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 9/56:35 am
DTW
- STL
Nonstop1h 35m
Southwest
Mon 9/76:50 pm
STL
- DTW
Nonstop1h 35m
Southwest
Deal found 7/28![Southwest logo]()
$197
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/16:09 pm
PIT
- ORD
Nonstop1h 50m
United Airlines
Wed 9/97:10 am
ORD
- PIT
Nonstop1h 39m
United Airlines
Deal found 7/30![United Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/202:23 pm
CVG
- ORD
1 stop5h 06m
Delta
Mon 8/241:59 pm
ORD
- CVG
1 stop4h 55m
Delta
Deal found 7/28![Delta logo]()
$216
This Southwest deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” 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 8/251:15 pm
CLE
- MDW
2 stops9h 35m
Southwest
Thu 8/272:35 pm
MDW
- CLE
2 stops6h 20m
Southwest
Deal found 7/25![Southwest logo]()
$198
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 9/26:09 pm
PIT
- ORD
Nonstop1h 50m
United Airlines
Thu 9/310:36 am
ORD
- PIT
Nonstop1h 39m
United Airlines
Deal found 7/27![United Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Wed 8/1912:40 pm
DTW
- ORD
Nonstop1h 28m
Delta
Thu 8/201:44 pm
ORD
- DTW
Nonstop1h 30m
Delta
Deal found 7/27![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 9/912:55 pm
DTW
- STL
2 stops8h 05m
Southwest
Wed 9/165:55 am
STL
- DTW
1 stop5h 25m
Southwest
Deal found 7/27![Southwest logo]()
$202
This United Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/204:11 pm
PIT
- ORD
Nonstop1h 49m
United Airlines
Mon 8/246:05 pm
ORD
- PIT
Nonstop1h 42m
United Airlines
Deal found 7/29![United Airlines logo]()
$207
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/207:25 am
DTW
- ORD
Nonstop1h 31m
Delta
Mon 8/241:59 pm
ORD
- DTW
Nonstop1h 30m
Delta
Deal found 7/29![Delta logo]()
$217
This United Airlines deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/410:45 am
PIT
- ORD
Nonstop1h 44m
United Airlines
Mon 9/77:10 am
ORD
- PIT
Nonstop1h 39m
United Airlines
Deal found 7/27![United Airlines logo]()
$210
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 9/36:55 am
DTW
- STL
Nonstop1h 50m
Southwest
Mon 9/76:50 pm
STL
- DTW
Nonstop1h 35m
Southwest
Deal found 7/27![Southwest logo]()
$217
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/213:50 pm
DTW
- ORD
Nonstop1h 23m
Delta
Wed 9/238:55 am
ORD
- DTW
Nonstop1h 26m
Delta
Deal found 7/30![Delta logo]()
$217
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/278:55 am
CLE
- MDW
Nonstop1h 10m
Southwest
Tue 9/298:45 am
MDW
- CLE
2 stops7h 15m
Southwest
Deal found 7/28![Southwest logo]()
$217
Last-minute flights from Ohio to IllinoisDiscover last-minute flight deals from Ohio to Illinois. Data last updated July 31, 2026 and is based on user searches.
Discover last-minute flight deals from Ohio to Illinois. Data last updated July 31, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/196:40 pm
DTW
- STL
1 stop23h 42m
Frontier
Mon 8/246:17 pm
STL
- DTW
1 stop14h 03m
Frontier
Deal found 7/29![Frontier logo]()
$144
This Southwest deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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 8/206:05 pm
CLE
- MDW
1 stop5h 15m
Southwest
Mon 8/247:30 am
MDW
- CLE
1 stop3h 45m
Southwest
Deal found 7/27![Southwest logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/206:00 am
DTW
- STL
1 stop12h 22m
Frontier
Mon 8/246:17 pm
STL
- DTW
1 stop14h 03m
Frontier
Deal found 7/29![Frontier logo]()
$155
This Kiwi.com deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” 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 8/226:40 pm
DTW
- STL
1 stop23h 42m
Frontier
Mon 8/246:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 7/28![Frontier logo]()
$153
This Southwest deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:40 am
CLE
- MDW
2 stops6h 35m
Southwest
Mon 8/244:25 pm
MDW
- CLE
Nonstop1h 15m
Southwest
Deal found 7/30![Southwest logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:00 am
DTW
- STL
1 stop12h 22m
Frontier
Mon 8/316:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 7/25![Frontier logo]()
$133
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/246:40 am
CLE
- MDW
2 stops6h 35m
Southwest
Wed 8/2612:45 pm
MDW
- CLE
2 stops7h 15m
Southwest
Deal found 7/29![Southwest logo]()
$147
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:00 am
CLE
- ORD
1 stop8h 00m
Frontier
Thu 8/278:05 am
ORD
- CLE
1 stop14h 24m
Frontier
Deal found 7/30![Frontier logo]()
$153
This Kiwi.com deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 8/264:38 pm
CLE
- ORD
1 stop21h 12m
Frontier
Wed 9/28:05 am
ORD
- CLE
1 stop14h 24m
Frontier
Deal found 7/29![Frontier logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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.
Sun 8/306:00 am
DTW
- STL
1 stop12h 22m
Frontier
Mon 8/316:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 7/26![Frontier logo]()
$137
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” 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.
Sun 8/308:46 pm
DTW
- STL
1 stop21h 36m
Frontier
Fri 9/46:17 pm
STL
- DTW
1 stop5h 47m
Frontier
Deal found 7/27![Frontier logo]()
$140
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:00 am
DTW
- STL
1 stop12h 22m
Frontier
Mon 9/76:17 pm
STL
- DTW
1 stop14h 03m
Frontier
Deal found 7/26![Frontier logo]()
$134
One-way flights from Ohio to IllinoisSearch for one-way flight options from Ohio to Illinois. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
Search for one-way flight options from Ohio to Illinois. Find affordable one-way fares based on user searches. Data last updated July 31, 2026.
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” 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 9/194:35 pm
CLE
- MDW
Nonstop1h 20m
Southwest
Deal found 7/29![Southwest logo]()
$59
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/225:30 am
CLE
- ORD
Nonstop1h 37m
United Airlines
Deal found 7/28![United Airlines logo]()
$59
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/55:15 pm
CLE
- MDW
1 stop6h 32m
Frontier
Deal found 7/30![Frontier logo]()
$60
This Kiwi.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/86:40 pm
DTW
- STL
1 stop19h 30m
Frontier
Deal found 7/30![Frontier logo]()
$61
This Trip.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 8/316:00 am
DTW
- STL
1 stop12h 22m
Frontier
Deal found 7/30![Frontier logo]()
$62
This Trip.com deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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.
Thu 8/275:15 pm
CLE
- MDW
1 stop6h 32m
Frontier
Deal found 7/30![Frontier logo]()
$62
This Southwest deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/111:50 pm
CLE
- MDW
Nonstop1h 15m
Southwest
Deal found 7/28![Southwest logo]()
$64
This American Airlines deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:55 pm
CLE
- ORD
Nonstop1h 52m
American Airlines
Deal found 7/25![American Airlines logo]()
$64
This Frontier deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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 9/267:00 am
CLE
- MDW
1 stop11h 51m
Frontier
Deal found 7/30![Frontier logo]()
$65
This Expedia deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” 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.
Thu 8/271:37 pm
CLE
- ORD
1 stop24h 43m
Frontier
Deal found 7/30![Frontier logo]()
$65
This Trip.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/147:00 am
DTW
- STL
1 stop7h 10m
Frontier
Deal found 7/26![Frontier logo]()
$67
This American Airlines deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” 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 9/104:06 pm
PIT
- ORD
Nonstop1h 52m
American Airlines
Deal found 7/26![American Airlines logo]()
$69
Find flight deals from Ohio to Illinois
Keep the following information in mind while searching for Ohio to Illinois flight deals. Data was last updated July 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $132 (Southwest) |
One-way from | $59 (Southwest) |
Popular in | January |
Cheapest in | May |
Average price | $277 |
Good round-trip deal | $237 or less |
Good one-way deal | $179 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Ohio to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2026.
Use the filters below to find and compare flights from Ohio to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ClevelandChicago
CLE - MDW
CLEMDW
Cleveland Hopkins Intl
Wed 10/7
6:15 am-12:05 pm
2 stops6h 50m
Chicago Midway
Thu 10/8
5:00 am-12:00 pm
1 stop6h 00m
$142
ClevelandChicago
CLE - ORD
CLEORD
Cleveland Hopkins Intl
Tue 9/29
8:28 am-10:37 am
1 stop3h 09m
Chicago O'Hare Intl
Tue 10/6
8:29 am-1:39 pm
1 stop4h 10m
$157
ClevelandChicago
CLE - ORD
CLEORD
Cleveland Hopkins Intl
Tue 8/25
3:49 pm-8:30 pm
1 stop5h 41m
Chicago O'Hare Intl
Sat 8/29
5:18 pm-9:22 pm
1 stop3h 04m
$157
ClevelandChicago
CLE - ORD
CLEORD
Cleveland Hopkins Intl
Wed 8/26
3:49 pm-8:30 pm
1 stop5h 41m
Chicago O'Hare Intl
Sat 8/29
5:18 pm-9:22 pm
1 stop3h 04m
$157
ClevelandChicago
CLE - MDW
CLEMDW
Cleveland Hopkins Intl
Sat 8/22
6:10 am-1:20 pm
2 stops8h 10m
Chicago Midway
Sat 8/29
5:55 am-12:15 pm
1 stop5h 20m
$159
ClevelandChicago
CLE - ORD
CLEORD
Cleveland Hopkins Intl
Mon 10/12
8:10 am-10:30 am
1 stop3h 20m
Chicago O'Hare Intl
Mon 10/12
7:30 pm-11:46 pm
1 stop3h 16m
$164
ClevelandChicago
CLE - ORD
CLEORD
Cleveland Hopkins Intl
Fri 10/9
6:10 pm-6:50 pm
Nonstop1h 40m
Chicago O'Hare Intl
Wed 10/14
10:40 am-1:11 pm
Nonstop1h 31m
$168
ClevelandChicago
CLE - ORD
CLEORD
Cleveland Hopkins Intl
Fri 9/18
2:14 pm-2:52 pm
Nonstop1h 38m
Chicago O'Hare Intl
Mon 9/21
9:30 pm-11:59 pm
Nonstop1h 29m
$168
Quickest round-trip
ClevelandChicago
CLE - MDW
CLEMDW
Cleveland Hopkins Intl
Thu 10/8
8:20 pm-8:35 pm
Nonstop1h 15m
Chicago Midway
Fri 10/9
6:45 pm-8:55 pm
Nonstop1h 10m
$168
ClevelandChicago
CLE - ORD
CLEORD
Cleveland Hopkins Intl
Fri 8/21
5:30 am-6:07 am
Nonstop1h 37m
Chicago O'Hare Intl
Wed 9/9
8:45 am-11:27 am
Nonstop1h 42m
$168
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Ohio to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Ohio with our price prediction graph.
CLE-MDW
CLE-ORD
PIT-ORD
CVG-ORD
DTW-STL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Ohio to Illinois
USOH-USIL
CLE-MDW
CLE-ORD
PIT-ORD
CVG-ORD
What is the cheapest month to book a flight from Ohio to Illinois?
Currently, October is the cheapest month in which you can book a flight from Ohio to Illinois (average of $276). Flying from Ohio to Illinois in July is currently the most expensive (average of $346). 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 OH to IL?
Find hourly flight availability from Ohio 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 July 31, 2026.
Unlike at noon, when flights are generally more expensive, you can save up to 25% on flights from Ohio to Illinois by exploring options for tickets in the morning.
Weekly flight availability from Ohio to Illinois
Explore weekly flight availability from Ohio to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 31, 2026.
The most flights from USOH to USIL are scheduled on a Thursday (63 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (36 on average).
How much does it cost to fly round-trip from Ohio to Illinois?
Airfare is below average for this route at the moment.
Ohio to Illinois flights typically cost between $215 and $359 in September.The cheapest round-trip price found within the last 5 days was $135 on Frontier (Sep 24-Sep 28).
How far ahead should I book a flight from Ohio to Illinois?
The best time to book flights from Ohio to Illinois is 76 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Ohio to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Ohio to Illinois. Price data was last updated on July 25, 2026.
Travelers seeking maximum savings on their Ohio to Illinois flight should consider departing on Wednesday at noon 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 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 July 31, 2026.
Read through reviews of airlines operating flights from Ohio to Illinois, such as Southwest,United Airlines, andAmerican Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Crew
8.6
Food
7.0
Comfort
8.0
Overall
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Ohio to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Popular flights
Return Flight Options
Top destinations
Alternative routes for Ohio 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 Ohio to Illinois by cabin class
Find flights from Ohio to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ohio and Illinois flights
Browse other Ohio and Illinois flight options. Last updated on July 31, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Ohio after your stay in Illinois
Ohio to Illinois flights
Consider these flights traveling from Ohio to Illinois.
Top 4 airlines flying from Ohio to Illinois
Discover the top 4 airlines that operate flights from Ohio to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$128 | Average$285 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$131 | Average$330 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$137 | Average$315 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$143 | Average$208 | FlexibilityNo cancel fee | On-time62% |