$54+ Cheap flights from Tennessee 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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
BNA — ORD
Jul 20 — Jul 271
Round-trip
1 adult, Economy
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Cheapest flights from Tennessee to IllinoisExplore the most affordable flight options available from Tennessee to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 20, 2026.
Explore the most affordable flight options available from Tennessee to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 20, 2026.
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Wed 7/296:15 pm
STL
- BNA
Nonstop1h 05m
Southwest
Deal found 6/18![Southwest logo]()
$109
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:10 am
BNA
- STL
1 stop4h 33m
Delta
Wed 7/297:08 am
STL
- BNA
1 stop4h 22m
Delta
Deal found 6/16![Delta logo]()
$147
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:00 am
BNA
- STL
Nonstop1h 10m
Southwest
Wed 8/262:45 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 6/16![Southwest logo]()
$152
This Cheapflightsfares deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/121:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Sun 7/192:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/18![Allegiant Air logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Thu 7/92:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/18![Southern / Mokulele logo]()
$171
This Southern / Mokulele deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Thu 7/162:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/18![Southern / Mokulele logo]()
$172
This Super.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/161:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Thu 7/232:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/18![Allegiant Air logo]()
$173
This eDestinos deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/192:35 pm
BNA
- STL
1 stop22h 46m
Southern / Mokulele
Sun 7/262:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/19![Southern / Mokulele logo]()
$192
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/98:57 am
CHA
- ORD
1 stop28h 18m
Multiple Airlines
Sat 8/158:05 am
ORD
- CHA
1 stop23h 02m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$194
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/61:23 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Sun 8/92:49 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$194
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/213:04 pm
CHA
- MDW
1 stop4h 29m
Delta
Mon 8/249:24 am
MDW
- CHA
1 stop3h 53m
Delta
Deal found 6/19![Delta logo]()
$197
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/138:57 am
CHA
- ORD
1 stop28h 18m
Multiple Airlines
Sat 8/158:05 am
ORD
- CHA
1 stop23h 02m
Multiple Airlines
Deal found 6/19![Multiple Airlines logo]()
$197
Best flights from Tennessee to IllinoisDiscover carefully curated flight deals from Tennessee to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 20, 2026.
Discover carefully curated flight deals from Tennessee to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 20, 2026.
This Southwest deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Wed 7/296:15 pm
STL
- BNA
Nonstop1h 05m
Southwest
Deal found 6/17![Southwest logo]()
$109
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:10 am
BNA
- STL
1 stop4h 33m
Delta
Wed 7/297:08 am
STL
- BNA
1 stop4h 22m
Delta
Deal found 6/16![Delta logo]()
$147
This Southern / Mokulele deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Thu 7/162:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/19![Southern / Mokulele logo]()
$172
This Contour deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/318:00 am
BNA
- ORD
1 stop3h 30m
Contour
Wed 8/511:15 am
ORD
- BNA
1 stop4h 55m
Contour
Deal found 6/15![Contour logo]()
$247
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1210:44 am
CHA
- ORD
Nonstop2h 10m
United Airlines
Sat 8/159:20 pm
ORD
- CHA
Nonstop1h 50m
United Airlines
Deal found 6/17![United Airlines logo]()
$249
This American Airlines deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/301:13 pm
TYS
- ORD
Nonstop2h 02m
American Airlines
Sun 7/55:00 am
ORD
- TYS
1 stop5h 27m
American Airlines
Deal found 6/19![American Airlines logo]()
$299
This Southern / Mokulele deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/179:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Sun 7/192:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/19![Southern / Mokulele logo]()
$172
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/149:55 am
TRI
- ORD
2 stops27h 20m
Multiple Airlines
Sun 8/165:13 pm
ORD
- TRI
1 stop21h 12m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$368
This KAYAK deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/292:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Wed 7/12:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/19![Southern / Mokulele logo]()
$172
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2810:02 am
CHA
- ORD
1 stop5h 07m
Delta
Tue 9/11:50 pm
ORD
- CHA
1 stop6h 34m
Delta
Deal found 6/19![Delta logo]()
$207
This Southern / Mokulele deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/189:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Wed 8/192:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/15![Southern / Mokulele logo]()
$172
This Southwest deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:40 pm
BNA
- STL
Nonstop1h 15m
Southwest
Mon 10/125:55 pm
STL
- BNA
1 stop5h 15m
Southwest
Deal found 6/19![Southwest logo]()
$213
This United Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/246:00 am
TYS
- ORD
Nonstop1h 59m
United Airlines
Sun 7/265:59 pm
ORD
- TYS
Nonstop1h 49m
United Airlines
Deal found 6/15![United Airlines logo]()
$249
This eDestinos deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/192:35 pm
BNA
- STL
1 stop22h 46m
Southern / Mokulele
Sun 7/262:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/19![Southern / Mokulele logo]()
$192
This Contour deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Contour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/78:00 am
BNA
- ORD
1 stop3h 40m
Contour
Sun 8/912:30 pm
ORD
- BNA
1 stop3h 40m
Contour
Deal found 6/16![Contour logo]()
$267
This Southwest deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:15 am
MEM
- MDW
Nonstop1h 35m
Southwest
Mon 8/108:45 pm
MDW
- MEM
Nonstop1h 40m
Southwest
Deal found 6/19![Southwest logo]()
$245
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/207:00 am
TYS
- ORD
Nonstop1h 57m
United Airlines
Sun 8/236:06 pm
ORD
- TYS
Nonstop1h 47m
United Airlines
Deal found 6/16![United Airlines logo]()
$249
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:10 am
BNA
- MDW
1 stop4h 55m
Delta
Tue 7/289:19 am
MDW
- BNA
1 stop3h 44m
Delta
Deal found 6/19![Delta logo]()
$257
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2612:45 pm
TYS
- MDW
1 stop5h 55m
Southwest
Sat 8/296:45 am
MDW
- TYS
1 stop5h 30m
Southwest
Deal found 6/15![Southwest logo]()
$247
This United Airlines deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/319:46 am
MEM
- ORD
Nonstop2h 11m
United Airlines
Tue 8/49:20 pm
ORD
- MEM
Nonstop2h 01m
United Airlines
Deal found 6/18![United Airlines logo]()
$254
This Southern / Mokulele deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:30 pm
BNA
- STL
1 stop18h 51m
Southern / Mokulele
Thu 7/302:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/15![Southern / Mokulele logo]()
$218
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:10 am
MEM
- ORD
1 stop6h 54m
Delta
Sat 9/192:00 pm
ORD
- MEM
1 stop4h 49m
Delta
Deal found 6/16![Delta logo]()
$265
This American Airlines deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/167:54 am
TRI
- ORD
Nonstop2h 11m
American Airlines
Tue 7/219:29 pm
ORD
- TRI
Nonstop1h 50m
American Airlines
Deal found 6/15![American Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/76:55 pm
TYS
- MDW
1 stop3h 15m
Southwest
Fri 7/105:20 pm
MDW
- TYS
1 stop4h 15m
Southwest
Deal found 6/15![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:25 am
MEM
- ORD
Nonstop2h 05m
United Airlines
Fri 7/1712:40 pm
ORD
- MEM
Nonstop2h 02m
United Airlines
Deal found 6/16![United Airlines logo]()
$254
This Delta deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/76:00 am
CHA
- MDW
1 stop4h 17m
Delta
Sun 8/96:05 am
MDW
- CHA
1 stop5h 21m
Delta
Deal found 6/19![Delta logo]()
$269
This KAYAK deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/187:00 am
BNA
- ORD
Nonstop2h 11m
American Airlines
Tue 8/181:29 pm
ORD
- BNA
Nonstop1h 44m
American Airlines
Deal found 6/18![American Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:45 pm
TYS
- MDW
1 stop3h 25m
Southwest
Mon 8/105:30 am
MDW
- TYS
1 stop6h 55m
Southwest
Deal found 6/19![Southwest logo]()
$257
This United Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/283:01 pm
BNA
- ORD
Nonstop2h 03m
United Airlines
Tue 8/410:37 am
ORD
- BNA
Nonstop1h 52m
United Airlines
Deal found 6/16![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/266:00 am
CHA
- MDW
1 stop4h 13m
Delta
Tue 8/45:10 pm
MDW
- CHA
1 stop5h 33m
Delta
Deal found 6/18![Delta logo]()
$269
Last-minute flights from Tennessee to IllinoisDiscover last-minute flight deals from Tennessee to Illinois. Data last updated June 20, 2026 and is based on user searches.
Discover last-minute flight deals from Tennessee to Illinois. Data last updated June 20, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/292:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Tue 7/77:20 pm
STL
- BNA
1 stop22h 43m
Southern / Mokulele
Deal found 6/16![Southern / Mokulele logo]()
$211
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Thu 7/92:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/18![Southern / Mokulele logo]()
$171
This CheapOair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/69:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Tue 7/72:00 pm
STL
- BNA
1 stop19h 03m
Southern / Mokulele
Deal found 6/17![Southern / Mokulele logo]()
$212
This Southern / Mokulele deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/99:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Thu 7/162:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/19![Southern / Mokulele logo]()
$172
This Cheapflightsfares deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/121:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Sun 7/192:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/18![Allegiant Air logo]()
$159
This Super.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/161:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Thu 7/232:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/18![Allegiant Air logo]()
$173
This Cheapflightsfares deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/161:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Sun 7/192:48 pm
MDW
- TYS
Nonstop1h 30m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$210
This Kiwi.com deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/166:00 am
BNA
- STL
2 stops26h 57m
Multiple Airlines
Thu 7/232:00 pm
STL
- BNA
1 stop4h 03m
Multiple Airlines
Deal found 6/18![Multiple Airlines logo]()
$215
This eDestinos deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/192:35 pm
BNA
- STL
1 stop22h 46m
Southern / Mokulele
Sun 7/262:00 pm
STL
- BNA
1 stop4h 03m
Southern / Mokulele
Deal found 6/19![Southern / Mokulele logo]()
$192
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/206:10 am
BNA
- STL
Nonstop1h 20m
Southwest
Tue 7/216:15 pm
STL
- BNA
Nonstop1h 05m
Southwest
Deal found 6/15![Southwest logo]()
$209
This Southwest deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Wed 7/296:15 pm
STL
- BNA
Nonstop1h 05m
Southwest
Deal found 6/17![Southwest logo]()
$109
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:10 am
BNA
- STL
1 stop4h 33m
Delta
Wed 7/297:08 am
STL
- BNA
1 stop4h 22m
Delta
Deal found 6/16![Delta logo]()
$147
One-way flights from Tennessee to IllinoisSearch for one-way flight options from Tennessee to Illinois. Find affordable one-way fares based on user searches. Data last updated June 20, 2026.
Search for one-way flight options from Tennessee to Illinois. Find affordable one-way fares based on user searches. Data last updated June 20, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/231:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$54
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/159:45 pm
BNA
- STL
Nonstop1h 20m
Southwest
Deal found 6/15![Southwest logo]()
$55
This Southwest deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/216:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Deal found 6/19![Southwest logo]()
$59
This Cheapflightsfares deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/91:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$63
This Trip.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/121:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/16![Allegiant Air logo]()
$64
This Cheapflightsfares deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/251:22 pm
TYS
- MDW
Nonstop1h 34m
Allegiant Air
Deal found 6/15![Allegiant Air logo]()
$71
This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/169:33 am
BNA
- STL
1 stop6h 21m
Delta
Deal found 6/16![Delta logo]()
$74
This Kiwi.com deal was found by Cheapflights users on 6/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/301:22 pm
TYS
- MDW
Nonstop1h 36m
Allegiant Air
Deal found 6/19![Allegiant Air logo]()
$78
This Delta deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/145:10 am
BNA
- STL
1 stop4h 33m
Delta
Deal found 6/18![Delta logo]()
$79
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/212:22 pm
MEM
- ORD
Nonstop2h 07m
United Airlines
Deal found 6/17![United Airlines logo]()
$79
This Southwest deal was found by Cheapflights users on 6/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/143:35 pm
MEM
- MDW
Nonstop1h 35m
Southwest
Deal found 6/18![Southwest logo]()
$79
This Booking.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/169:30 am
BNA
- STL
1 stop3h 51m
Southern / Mokulele
Deal found 6/16![Southern / Mokulele logo]()
$80
Find flight deals from Tennessee to Illinois
Keep the following information in mind while searching for Tennessee to Illinois flight deals. Data was last updated June 20, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $109 (Southwest) |
One-way from | $54 (Kiwi.com) |
Popular in | January |
Cheapest in | September |
Average price | $313 |
Good round-trip deal | $78 or less |
Good one-way deal | $39 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Tennessee 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 June 20, 2026.
Use the filters below to find and compare flights from Tennessee to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Wed 7/22
6:25 am-7:45 am
Nonstop1h 20m
Lambert-St Louis
Wed 7/29
6:15 pm-7:20 pm
Nonstop1h 05m
$109
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Wed 7/22
5:10 am-9:43 am
1 stop4h 33m
Lambert-St Louis
Wed 7/29
7:08 am-11:30 am
1 stop4h 22m
$147
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Thu 7/9
9:30 am-1:21 pm
1 stop3h 51m
Lambert-St Louis
Thu 7/16
2:00 pm-6:03 pm
1 stop4h 03m
$172
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Fri 7/17
9:30 am-1:21 pm
1 stop3h 51m
Lambert-St Louis
Sun 7/19
2:00 pm-6:03 pm
1 stop4h 03m
$172
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Mon 6/29
2:35 pm-6:36 pm
1 stop4h 01m
Lambert-St Louis
Wed 7/1
2:00 pm-6:03 pm
1 stop4h 03m
$172
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Tue 8/18
9:30 am-1:21 pm
1 stop3h 51m
Lambert-St Louis
Wed 8/19
2:00 pm-6:03 pm
1 stop4h 03m
$172
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Sun 7/19
2:35 pm-1:21 pm
1 stop22h 46m
Lambert-St Louis
Sun 7/26
2:00 pm-6:03 pm
1 stop4h 03m
$192
ChattanoogaChicago
CHA - ORD
CHAORD
Chattanooga Lovell Field
Fri 8/28
10:02 am-2:09 pm
1 stop5h 07m
Chicago O'Hare Intl
Tue 9/1
1:50 pm-9:24 pm
1 stop6h 34m
$207
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Wed 10/7
8:40 pm-9:55 pm
Nonstop1h 15m
Lambert-St Louis
Mon 10/12
5:55 pm-11:10 pm
1 stop5h 15m
$213
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Sun 7/26
6:30 pm-1:21 pm
1 stop18h 51m
Lambert-St Louis
Thu 7/30
2:00 pm-6:03 pm
1 stop4h 03m
$218
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Tennessee to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Tennessee with our price prediction graph.
BNA-STL
TYS-MDW
MEM-ORD
CHA-MDW
MEM-MDW
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 Tennessee to Illinois
USTN-USIL
BNA-STL
TYS-MDW
MEM-ORD
CHA-MDW
What is the cheapest month to book a flight from Tennessee to Illinois?
Currently, December is the cheapest month in which you can book a flight from Tennessee to Illinois (average of $77). Flying from Tennessee to Illinois in February is currently the most expensive (average of $757). 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 TN to IL?
Find hourly flight availability from Tennessee 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 June 20, 2026.
It’s optimal to fly from Tennessee to Illinois in the morning. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Tennessee to Illinois
Explore weekly flight availability from Tennessee 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 June 20, 2026.
The most flights from USTN to USIL are scheduled on a Thursday (66 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).
How much does it cost to fly round-trip from Tennessee to Illinois?
How far ahead should I book a flight from Tennessee to Illinois?
The price you pay for your flight from Tennessee to Illinois may vary depending on when you book. For the best chance of a lower fare, look to book 79 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 Tennessee to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Tennessee to Illinois. Price data was last updated on June 13, 2026.
Travelers seeking maximum savings on their Tennessee to Illinois flight should consider departing on Sunday evenings when fares are most often at their lowest. Wednesday afternoons 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 June 20, 2026.
Peruse reviews from past customers who have flown with Southwest,Delta, andUnited Airlines from Tennessee to Illinois to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Comfort
8.0
Food
7.0
Overall
7.9
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Tennessee 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 Tennessee 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 Tennessee to Illinois by cabin class
Find flights from Tennessee to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Tennessee and Illinois flights
Browse other Tennessee and Illinois flight options. Last updated on June 20, 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 Tennessee after your stay in Illinois
Tennessee to Illinois flights
Consider these flights traveling from Tennessee to Illinois.
Top 8 airlines flying from Tennessee to Illinois
Discover the top 8 airlines that operate flights from Tennessee 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 June 20, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$55 | Average$125 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$58 | Average$97 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$97 | Average$304 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$109 | Average$327 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$110 | Average$285 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$111 | Average$318 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$157 | Average$232 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$189 | Average$227 | FlexibilityNo cancel fee | On-timeN/A |