$88+ Cheap flights from Chattanooga (CHA) 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 10/22. Fares are subject to change and may not be available on all flights or dates of travel.
CHA — ORD
Aug 24 — Aug 311
Round-trip
1 adult, Economy
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Cheapest flights from Chattanooga to IllinoisExplore the most affordable flight options available from Chattanooga to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
Explore the most affordable flight options available from Chattanooga to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 25, 2026.
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/286:15 am
CHA
- ORD
Nonstop2h 05m
United Airlines
Sun 8/306:59 am
ORD
- CHA
Nonstop1h 52m
United Airlines
Deal found 7/21![United Airlines logo]()
$249
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:52 am
CHA
- ORD
Nonstop2h 13m
American Airlines
Mon 8/312:34 pm
ORD
- CHA
Nonstop1h 48m
American Airlines
Deal found 7/22![American Airlines logo]()
$259
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:52 am
CHA
- ORD
Nonstop2h 13m
American Airlines
Sat 8/158:56 pm
ORD
- CHA
Nonstop1h 50m
American Airlines
Deal found 7/22![American Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/89:04 am
CHA
- ORD
1 stop7h 22m
Multiple Airlines
Tue 10/136:05 am
ORD
- CHA
1 stop26h 34m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$266
This Delta deal was found by Cheapflights users on 7/20. 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 8/216:50 pm
CHA
- MDW
1 stop4h 46m
Delta
Mon 8/246:05 am
MDW
- CHA
1 stop5h 21m
Delta
Deal found 7/20![Delta logo]()
$269
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 am
CHA
- ORD
1 stop7h 54m
American Airlines
Sun 8/306:49 am
ORD
- CHA
1 stop4h 44m
American Airlines
Deal found 7/22![American Airlines logo]()
$269
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/89:04 am
CHA
- ORD
1 stop7h 22m
Multiple Airlines
Wed 10/147:00 am
ORD
- CHA
2 stops24h 19m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$270
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 10/2310:00 am
CHA
- ORD
Nonstop2h 10m
American Airlines
Tue 10/278:59 pm
ORD
- CHA
Nonstop1h 51m
American Airlines
Deal found 7/25![American Airlines logo]()
$274
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/89:04 am
CHA
- ORD
1 stop7h 22m
Multiple Airlines
Sat 10/109:20 am
ORD
- CHA
2 stops22h 24m
Multiple Airlines
Deal found 7/22![Multiple Airlines logo]()
$275
This Delta deal was found by Cheapflights users on 7/21. 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.
Tue 9/17:05 am
CHA
- MDW
1 stop3h 54m
Delta
Wed 9/96:05 am
MDW
- CHA
1 stop4h 18m
Delta
Deal found 7/21![Delta logo]()
$279
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:32 pm
CHA
- ORD
1 stop4h 27m
Delta
Mon 8/245:30 am
ORD
- CHA
1 stop5h 56m
Delta
Deal found 7/25![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 7/21. 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 9/106:00 am
CHA
- STL
1 stop5h 12m
United Airlines
Sun 9/135:30 pm
STL
- CHA
1 stop5h 40m
United Airlines
Deal found 7/21![United Airlines logo]()
$280
Best flights from Chattanooga to IllinoisDiscover carefully curated flight deals from Chattanooga to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
Discover carefully curated flight deals from Chattanooga to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 25, 2026.
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/2210:44 am
CHA
- ORD
Nonstop2h 10m
United Airlines
Sun 8/306:59 am
ORD
- CHA
Nonstop1h 52m
United Airlines
Deal found 7/23![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/143:04 pm
CHA
- MDW
1 stop4h 29m
Delta
Sun 8/169:24 am
MDW
- CHA
1 stop3h 53m
Delta
Deal found 7/22![Delta logo]()
$279
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Wed 11/258:03 pm
CHA
- PIA
1 stop4h 55m
American Airlines
Fri 11/275:38 pm
PIA
- CHA
1 stop5h 23m
American Airlines
Deal found 7/21![American Airlines logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 12/282:40 pm
CHA
- RFD
1 stop18h 45m
Allegiant Air
Fri 1/111:00 am
RFD
- CHA
1 stop26h 23m
Allegiant Air
Deal found 7/24![Allegiant Air logo]()
$458
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 9/191:51 pm
CHA
- ORD
Nonstop2h 04m
United Airlines
Mon 9/216:59 am
ORD
- CHA
Nonstop1h 55m
United Airlines
Deal found 7/24![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 7/21. 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.
Tue 9/16:00 am
CHA
- MDW
1 stop4h 17m
Delta
Tue 9/89:29 am
MDW
- CHA
1 stop3h 51m
Delta
Deal found 7/21![Delta logo]()
$279
This United Airlines deal was found by Cheapflights users on 7/22. 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.
Fri 12/46:30 am
CHA
- ORD
Nonstop2h 07m
United Airlines
Mon 12/77:11 am
ORD
- CHA
Nonstop1h 58m
United Airlines
Deal found 7/22![United Airlines logo]()
$259
This American Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 8/275:21 pm
CHA
- PIA
1 stop6h 38m
American Airlines
Sat 8/296:47 pm
PIA
- CHA
1 stop3h 59m
American Airlines
Deal found 7/23![American Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 7/21. 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.
Wed 9/26:00 am
CHA
- MDW
1 stop4h 17m
Delta
Fri 9/119:29 am
MDW
- CHA
1 stop3h 51m
Delta
Deal found 7/21![Delta logo]()
$279
This Delta deal was found by Cheapflights users on 7/21. 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.
Wed 11/115:30 am
CHA
- ORD
1 stop5h 37m
Delta
Thu 11/267:10 am
ORD
- CHA
1 stop4h 09m
Delta
Deal found 7/21![Delta logo]()
$279
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Wed 8/57:40 am
CHA
- CMI
1 stop4h 31m
American Airlines
Sun 8/94:52 pm
CMI
- CHA
1 stop5h 54m
American Airlines
Deal found 7/21![American Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sat 8/2210:44 am
CHA
- STL
1 stop5h 47m
United Airlines
Mon 8/316:54 pm
STL
- CHA
1 stop4h 16m
United Airlines
Deal found 7/21![United Airlines logo]()
$290
This Delta deal was found by Cheapflights users on 7/21. 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.
Mon 9/143:08 pm
CHA
- ORD
1 stop6h 22m
Delta
Sun 9/206:40 am
ORD
- CHA
1 stop3h 43m
Delta
Deal found 7/21![Delta logo]()
$279
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/225:21 pm
CHA
- MLI
2 stops7h 47m
American Airlines
Sun 8/2311:43 am
MLI
- CHA
1 stop4h 39m
American Airlines
Deal found 7/24![American Airlines logo]()
$324
This United Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/146:15 am
CHA
- STL
1 stop4h 57m
United Airlines
Sun 8/165:30 pm
STL
- CHA
1 stop5h 40m
United Airlines
Deal found 7/24![United Airlines logo]()
$299
This Delta deal was found by Cheapflights users on 7/20. 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.
Tue 8/46:00 am
CHA
- MDW
1 stop4h 17m
Delta
Tue 8/2512:46 pm
MDW
- CHA
1 stop4h 14m
Delta
Deal found 7/20![Delta logo]()
$284
This United Airlines deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/47:00 pm
CHA
- STL
1 stop4h 59m
United Airlines
Mon 9/77:25 am
STL
- CHA
1 stop4h 51m
United Airlines
Deal found 7/23![United Airlines logo]()
$299
This American Airlines deal was found by Cheapflights users on 7/20. 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.
Fri 8/77:18 pm
CHA
- STL
1 stop4h 22m
American Airlines
Mon 8/104:54 pm
STL
- CHA
1 stop5h 52m
American Airlines
Deal found 7/20![American Airlines logo]()
$340
This Delta deal was found by Cheapflights users on 7/20. 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.
Thu 8/66:00 am
CHA
- MDW
1 stop4h 17m
Delta
Fri 8/286:05 am
MDW
- CHA
1 stop5h 21m
Delta
Deal found 7/20![Delta logo]()
$284
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 12/282:40 pm
CHA
- RFD
1 stop18h 45m
Allegiant Air
Sat 1/25:14 pm
RFD
- CHA
1 stop15h 32m
Allegiant Air
Deal found 7/24![Allegiant Air logo]()
$462
This Delta deal was found by Cheapflights users on 7/20. 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.
Sun 8/96:00 am
CHA
- MDW
1 stop4h 17m
Delta
Tue 8/259:24 am
MDW
- CHA
1 stop3h 53m
Delta
Deal found 7/20![Delta logo]()
$284
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Wed 8/57:07 pm
CHA
- STL
1 stop5h 22m
United Airlines
Sun 8/91:13 pm
STL
- CHA
1 stop6h 36m
United Airlines
Deal found 7/21![United Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/67:30 am
CHA
- STL
1 stop6h 32m
American Airlines
Mon 8/105:42 am
STL
- CHA
1 stop4h 58m
American Airlines
Deal found 7/22![American Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/62:56 pm
CHA
- RFD
1 stop17h 53m
Allegiant Air
Thu 8/273:59 pm
RFD
- CHA
2 stops20h 54m
Allegiant Air
Deal found 7/20![Allegiant Air logo]()
$488
This Delta deal was found by Cheapflights users on 7/20. 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.
Wed 8/51:15 pm
CHA
- MDW
1 stop4h 00m
Delta
Wed 8/269:24 am
MDW
- CHA
1 stop3h 53m
Delta
Deal found 7/20![Delta logo]()
$284
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sat 9/57:00 pm
CHA
- ORD
Nonstop2h 15m
United Airlines
Sat 9/129:20 pm
ORD
- CHA
Nonstop1h 50m
United Airlines
Deal found 7/21![United Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/87:20 am
CHA
- STL
1 stop5h 55m
American Airlines
Mon 8/106:36 am
STL
- CHA
1 stop7h 47m
American Airlines
Deal found 7/24![American Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 12/2710:36 am
CHA
- RFD
1 stop7h 08m
Allegiant Air
Fri 1/111:00 am
RFD
- CHA
1 stop26h 23m
Allegiant Air
Deal found 7/24![Allegiant Air logo]()
$493
This Delta deal was found by Cheapflights users on 7/20. 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.
Tue 8/46:00 am
CHA
- MDW
1 stop4h 17m
Delta
Sat 8/296:11 am
MDW
- CHA
1 stop4h 45m
Delta
Deal found 7/20![Delta logo]()
$284
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sat 9/121:51 pm
CHA
- ORD
Nonstop2h 04m
United Airlines
Sun 9/206:59 am
ORD
- CHA
Nonstop1h 55m
United Airlines
Deal found 7/21![United Airlines logo]()
$319
Last-minute flights from Chattanooga to IllinoisDiscover last-minute flight deals from Chattanooga to Illinois. Data last updated July 25, 2026 and is based on user searches.
Discover last-minute flight deals from Chattanooga to Illinois. Data last updated July 25, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 7/20. 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.
Tue 8/43:04 pm
CHA
- MDW
1 stop4h 29m
Delta
Mon 8/316:05 am
MDW
- CHA
1 stop5h 21m
Delta
Deal found 7/20![Delta logo]()
$284
This American Airlines deal was found by Cheapflights users on 7/20. 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.
Thu 8/65:52 pm
CHA
- ORD
Nonstop2h 22m
American Airlines
Sun 8/92:34 pm
ORD
- CHA
Nonstop1h 48m
American Airlines
Deal found 7/20![American Airlines logo]()
$281
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/107:52 am
CHA
- ORD
Nonstop2h 13m
American Airlines
Sat 8/158:56 pm
ORD
- CHA
Nonstop1h 50m
American Airlines
Deal found 7/22![American Airlines logo]()
$264
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/102:03 pm
CHA
- ORD
1 stop4h 39m
American Airlines
Sun 8/168:56 pm
ORD
- CHA
Nonstop1h 50m
American Airlines
Deal found 7/22![American Airlines logo]()
$274
This United Airlines deal was found by Cheapflights users on 7/20. 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.
Fri 8/146:15 am
CHA
- STL
1 stop4h 57m
United Airlines
Sun 8/165:30 pm
STL
- CHA
1 stop5h 40m
United Airlines
Deal found 7/20![United Airlines logo]()
$289
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/153:32 pm
CHA
- ORD
1 stop4h 27m
Delta
Mon 8/245:30 am
ORD
- CHA
1 stop5h 56m
Delta
Deal found 7/25![Delta logo]()
$279
This Delta deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1510:02 am
CHA
- MDW
1 stop6h 36m
Delta
Sun 8/236:05 am
MDW
- CHA
1 stop5h 21m
Delta
Deal found 7/24![Delta logo]()
$289
This Delta deal was found by Cheapflights users on 7/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/196:45 am
CHA
- MDW
1 stop6h 06m
Delta
Sun 8/236:05 am
MDW
- CHA
1 stop5h 21m
Delta
Deal found 7/22![Delta logo]()
$279
This Delta deal was found by Cheapflights users on 7/20. 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 8/216:50 pm
CHA
- MDW
1 stop4h 46m
Delta
Mon 8/246:05 am
MDW
- CHA
1 stop5h 21m
Delta
Deal found 7/20![Delta logo]()
$269
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/277:52 am
CHA
- ORD
Nonstop2h 13m
American Airlines
Mon 8/312:34 pm
ORD
- CHA
Nonstop1h 48m
American Airlines
Deal found 7/22![American Airlines logo]()
$259
This American Airlines deal was found by Cheapflights users on 7/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/276:00 am
CHA
- ORD
1 stop7h 54m
American Airlines
Sun 8/306:49 am
ORD
- CHA
1 stop4h 44m
American Airlines
Deal found 7/22![American Airlines logo]()
$269
This United Airlines deal was found by Cheapflights users on 7/21. 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 8/286:15 am
CHA
- ORD
Nonstop2h 05m
United Airlines
Sun 8/306:59 am
ORD
- CHA
Nonstop1h 52m
United Airlines
Deal found 7/21![United Airlines logo]()
$249
One-way flights from Chattanooga to IllinoisSearch for one-way flight options from Chattanooga to Illinois. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
Search for one-way flight options from Chattanooga to Illinois. Find affordable one-way fares based on user searches. Data last updated July 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 10/228:59 am
CHA
- ORD
1 stop7h 27m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$88
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1810:09 am
CHA
- ORD
1 stop30h 17m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 7/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/143:14 pm
CHA
- ORD
1 stop9h 41m
Multiple Airlines
Deal found 7/21![Multiple Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 7/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/79:57 pm
CHA
- MLI
1 stop10h 57m
Allegiant Air
Deal found 7/22![Allegiant Air logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/168:57 am
CHA
- ORD
1 stop28h 18m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$133
This American Airlines deal was found by Cheapflights users on 7/21. 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.
Thu 9/106:00 am
CHA
- ORD
Nonstop2h 11m
American Airlines
Deal found 7/21![American Airlines logo]()
$150
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” 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 10/259:29 am
CHA
- ORD
1 stop30h 57m
Multiple Airlines
Deal found 7/23![Multiple Airlines logo]()
$157
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/132:56 pm
CHA
- MDW
2 stops43h 55m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$176
This Delta deal was found by Cheapflights users on 7/21. 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.
Thu 9/105:00 pm
CHA
- MDW
1 stop6h 44m
Delta
Deal found 7/21![Delta logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 7/20. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/308:59 am
CHA
- MDW
2 stops27h 08m
Multiple Airlines
Deal found 7/20![Multiple Airlines logo]()
$239
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/132:56 pm
CHA
- RFD
1 stop17h 53m
Allegiant Air
Deal found 7/24![Allegiant Air logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” 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 8/29:09 am
CHA
- MDW
2 stops26h 58m
Multiple Airlines
Deal found 7/24![Multiple Airlines logo]()
$248
Find flight deals from Chattanooga to Illinois
Keep the following information in mind while searching for Chattanooga to Illinois flight deals. Data was last updated July 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $249 (United Airlines) |
One-way from | $88 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $332 |
Good round-trip deal | $330 or less |
Good one-way deal | $338 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Chattanooga 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 25, 2026.
Use the filters below to find and compare flights from Chattanooga to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChattanoogaChicago
CHA - ORD
CHAORD
Chattanooga Lovell Field
Sat 8/22
10:44 am-11:54 am
Nonstop2h 10m
Chicago O'Hare Intl
Sun 8/30
6:59 am-9:51 am
Nonstop1h 52m
$259
Quickest round-trip
ChattanoogaChicago
CHA - ORD
CHAORD
Chattanooga Lovell Field
Sat 9/19
1:51 pm-2:55 pm
Nonstop2h 04m
Chicago O'Hare Intl
Mon 9/21
6:59 am-9:54 am
Nonstop1h 55m
$259
ChattanoogaChicago
CHA - ORD
CHAORD
Chattanooga Lovell Field
Fri 12/4
6:30 am-7:37 am
Nonstop2h 07m
Chicago O'Hare Intl
Mon 12/7
7:11 am-10:09 am
Nonstop1h 58m
$259
ChattanoogaChicago
CHA - MDW
CHAMDW
Chattanooga Lovell Field
Fri 8/14
3:04 pm-6:33 pm
1 stop4h 29m
Chicago Midway
Sun 8/16
9:24 am-2:17 pm
1 stop3h 53m
$279
ChattanoogaChicago
CHA - MDW
CHAMDW
Chattanooga Lovell Field
Tue 9/1
6:00 am-9:17 am
1 stop4h 17m
Chicago Midway
Tue 9/8
9:29 am-2:20 pm
1 stop3h 51m
$279
ChattanoogaChicago
CHA - MDW
CHAMDW
Chattanooga Lovell Field
Wed 9/2
6:00 am-9:17 am
1 stop4h 17m
Chicago Midway
Fri 9/11
9:29 am-2:20 pm
1 stop3h 51m
$279
ChattanoogaChicago
CHA - ORD
CHAORD
Chattanooga Lovell Field
Wed 11/11
5:30 am-10:07 am
1 stop5h 37m
Chicago O'Hare Intl
Thu 11/26
7:10 am-12:19 pm
1 stop4h 09m
$279
ChattanoogaChicago
CHA - ORD
CHAORD
Chattanooga Lovell Field
Mon 9/14
3:08 pm-8:30 pm
1 stop6h 22m
Chicago O'Hare Intl
Sun 9/20
6:40 am-11:23 am
1 stop3h 43m
$279
ChattanoogaChicago
CHA - MDW
CHAMDW
Chattanooga Lovell Field
Tue 8/4
6:00 am-9:17 am
1 stop4h 17m
Chicago Midway
Tue 8/25
12:46 pm-6:00 pm
1 stop4h 14m
$284
ChattanoogaChicago
CHA - MDW
CHAMDW
Chattanooga Lovell Field
Thu 8/6
6:00 am-9:17 am
1 stop4h 17m
Chicago Midway
Fri 8/28
6:05 am-12:26 pm
1 stop5h 21m
$284
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Chattanooga to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Chattanooga with our price prediction graph.
CHA-ORD
CHA-MDW
CHA-STL
CHA-PIA
CHA-RFD
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 Chattanooga to Illinois
CHA-USIL
CHA-ORD
CHA-MDW
CHA-STL
CHA-PIA
What is the cheapest month to book a flight from Chattanooga to Illinois?
Currently, February is the cheapest month in which you can book a flight from Chattanooga to Illinois (average of $221). Flying from Chattanooga to Illinois in July is currently the most expensive (average of $340). 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 CHA to IL?
Find hourly flight availability from Chattanooga 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 25, 2026.
When flying from Chattanooga to Illinois, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 14% versus a flight at noon.
Weekly flight availability from Chattanooga to Illinois
Explore weekly flight availability from Chattanooga 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 25, 2026.
The most flights from CHA to USIL are scheduled on a Monday (6 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (4 on average).
How much does it cost to fly round-trip from Chattanooga to Illinois?
Airfare is below average for this route at the moment.
Chattanooga to Illinois flights typically cost between $264 and $404 in August.The cheapest round-trip price found within the last 5 days was $249 on United Airlines (Aug 28-Aug 30).
How far ahead should I book a flight from Chattanooga to Illinois?
The price you pay for your flight from Chattanooga to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 53 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Chattanooga to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Chattanooga to Illinois. Price data was last updated on July 25, 2026.
Travelers seeking maximum savings on their Chattanooga to Illinois flight should consider departing on Wednesday 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 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 25, 2026.
See what other customers who have flown with Delta,United Airlines, andAmerican Airlines from Chattanooga to Illinois have to say. 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
7.8
Food
7.2
Comfort
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Boarding
8.1
Entertainment
7.8
Food
7.2
Comfort
7.8
Overall
7.8
Crew
8.5
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Chattanooga to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Chattanooga to Illinois
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Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Chattanooga to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Chattanooga and Illinois flights
Browse other Chattanooga and Illinois flight options. Last updated on July 25, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Chattanooga to Illinois flights
Consider these flights traveling from Chattanooga to Illinois.
Top 3 airlines flying from Chattanooga to Illinois
Discover the top 3 airlines that operate flights from Chattanooga 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 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$189 | Average$328 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$189 | Average$291 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$208 | Average$338 | FlexibilityNo cancel fee | On-timeN/A |