$49+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
BNA — ORD
Apr 16 — Apr 231
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 March 17, 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 March 17, 2026.
This Southwest deal was found by Cheapflights users on 3/17. 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.
Thu 4/99:55 pm
BNA
- STL
Nonstop1h 20m
Southwest
Mon 4/138:45 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 3/17![Southwest logo]()
$137
This SmartFares deal was found by Cheapflights users on 3/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/92:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Mon 4/139:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/17![Southern / Mokulele logo]()
$151
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:40 pm
BNA
- STL
2 stops5h 15m
Southwest
Thu 4/168:45 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 3/14![Southwest logo]()
$152
This Trip.com deal was found by Cheapflights users on 3/16. 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.
Tue 3/312:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Sat 4/49:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/16![Southern / Mokulele logo]()
$154
This Trip.com deal was found by Cheapflights users on 3/16. 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.
Mon 3/302:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Thu 4/29:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/16![Southern / Mokulele logo]()
$156
This Delta deal was found by Cheapflights users on 3/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:59 pm
BNA
- STL
1 stop5h 59m
Delta
Mon 4/136:50 pm
STL
- BNA
1 stop4h 34m
Delta
Deal found 3/17![Delta logo]()
$157
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/87:30 am
MEM
- ORD
Nonstop1h 56m
United Airlines
Tue 4/143:45 pm
ORD
- MEM
Nonstop2h 02m
United Airlines
Deal found 3/12![United Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/143:00 pm
MEM
- MDW
Nonstop1h 35m
Southwest
Wed 4/159:05 pm
MDW
- MEM
Nonstop1h 45m
Southwest
Deal found 3/12![Southwest logo]()
$157
This Mytrip deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/72:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Tue 7/149:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/12![Southern / Mokulele logo]()
$163
This United Airlines deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/411:10 am
MEM
- ORD
Nonstop2h 05m
United Airlines
Wed 5/68:03 pm
ORD
- MEM
Nonstop2h 01m
United Airlines
Deal found 3/17![United Airlines logo]()
$167
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/145:15 am
MEM
- MDW
Nonstop1h 35m
Southwest
Tue 4/214:50 pm
MDW
- MEM
1 stop4h 55m
Southwest
Deal found 3/12![Southwest logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/62:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Sat 4/119:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/17![Southern / Mokulele logo]()
$171
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 March 17, 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 March 17, 2026.
This Delta deal was found by Cheapflights users on 3/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/116:00 pm
BNA
- STL
1 stop5h 58m
Delta
Tue 4/1411:42 am
STL
- BNA
1 stop3h 36m
Delta
Deal found 3/17![Delta logo]()
$157
This Southwest deal was found by Cheapflights users on 3/15. 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.
Thu 4/96:00 am
BNA
- STL
1 stop4h 50m
Southwest
Mon 4/135:40 am
STL
- BNA
1 stop3h 50m
Southwest
Deal found 3/15![Southwest logo]()
$157
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/149:50 am
MEM
- ORD
Nonstop2h 03m
United Airlines
Wed 4/158:03 pm
ORD
- MEM
Nonstop2h 01m
United Airlines
Deal found 3/12![United Airlines logo]()
$157
This Southern / Mokulele deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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.
Mon 5/112:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Sat 5/169:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/14![Southern / Mokulele logo]()
$172
This American Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/77:53 am
TYS
- STL
1 stop4h 54m
American Airlines
Tue 5/123:43 pm
STL
- TYS
1 stop4h 57m
American Airlines
Deal found 3/12![American Airlines logo]()
$245
This Southwest deal was found by Cheapflights users on 3/16. 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.
Tue 4/145:15 am
MEM
- MDW
Nonstop1h 35m
Southwest
Tue 4/2110:15 am
MDW
- MEM
2 stops7h 20m
Southwest
Deal found 3/16![Southwest logo]()
$172
This Delta deal was found by Cheapflights users on 3/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/97:35 pm
BNA
- STL
1 stop4h 23m
Delta
Mon 4/134:41 pm
STL
- BNA
1 stop4h 28m
Delta
Deal found 3/15![Delta logo]()
$176
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 5/145:05 am
MEM
- MDW
Nonstop1h 35m
Southwest
Mon 5/189:40 pm
MDW
- MEM
Nonstop1h 45m
Southwest
Deal found 3/13![Southwest logo]()
$177
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 5/154:10 pm
MEM
- MDW
Nonstop1h 35m
Southwest
Mon 5/189:40 pm
MDW
- MEM
Nonstop1h 45m
Southwest
Deal found 3/14![Southwest logo]()
$177
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/99:50 am
MEM
- ORD
Nonstop2h 03m
United Airlines
Thu 4/1612:40 pm
ORD
- MEM
Nonstop1h 59m
United Airlines
Deal found 3/12![United Airlines logo]()
$219
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 5/85:05 am
MEM
- MDW
Nonstop1h 35m
Southwest
Mon 5/119:40 pm
MDW
- MEM
Nonstop1h 45m
Southwest
Deal found 3/14![Southwest logo]()
$177
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/146:01 pm
TYS
- ORD
Nonstop1h 54m
United Airlines
Tue 5/192:10 pm
ORD
- TYS
Nonstop1h 58m
United Airlines
Deal found 3/12![United Airlines logo]()
$229
This Southwest deal was found by Cheapflights users on 3/15. 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 5/193:00 pm
MEM
- MDW
Nonstop1h 35m
Southwest
Wed 5/2010:05 am
MDW
- MEM
Nonstop1h 40m
Southwest
Deal found 3/15![Southwest logo]()
$177
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/85:59 pm
TYS
- MDW
1 stop4h 10m
Delta
Sun 5/106:23 am
MDW
- TYS
1 stop5h 47m
Delta
Deal found 3/12![Delta logo]()
$249
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/146:01 pm
TYS
- ORD
Nonstop1h 54m
United Airlines
Mon 5/186:00 pm
ORD
- TYS
Nonstop1h 45m
United Airlines
Deal found 3/12![United Airlines logo]()
$229
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/1412:20 pm
MEM
- MDW
2 stops7h 50m
Southwest
Wed 4/157:25 am
MDW
- MEM
1 stop5h 20m
Southwest
Deal found 3/12![Southwest logo]()
$182
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/86:25 pm
CHA
- MDW
1 stop3h 44m
Delta
Tue 5/126:23 am
MDW
- CHA
1 stop5h 05m
Delta
Deal found 3/12![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 3/16. 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 4/167:00 am
TYS
- ORD
Nonstop1h 55m
United Airlines
Sat 4/1810:30 am
ORD
- TYS
Nonstop1h 44m
United Airlines
Deal found 3/16![United Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 5/68:10 am
MEM
- MDW
2 stops6h 45m
Southwest
Fri 5/89:40 pm
MDW
- MEM
Nonstop1h 45m
Southwest
Deal found 3/14![Southwest logo]()
$192
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 6/265:45 pm
CHA
- MDW
1 stop5h 00m
Delta
Wed 7/19:30 am
MDW
- CHA
1 stop4h 03m
Delta
Deal found 3/13![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” 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 7/108:20 am
TYS
- ORD
Nonstop2h 08m
United Airlines
Sat 7/115:50 pm
ORD
- TYS
Nonstop1h 49m
United Airlines
Deal found 3/14![United Airlines logo]()
$249
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:05 am
MEM
- MDW
1 stop8h 10m
Southwest
Mon 5/117:30 am
MDW
- MEM
2 stops8h 20m
Southwest
Deal found 3/14![Southwest logo]()
$202
This Delta deal was found by Cheapflights users on 3/16. 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.
Fri 7/245:45 pm
CHA
- MDW
1 stop5h 00m
Delta
Wed 7/2910:35 am
MDW
- CHA
1 stop4h 31m
Delta
Deal found 3/16![Delta logo]()
$269
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/2810:53 am
CHA
- ORD
Nonstop2h 07m
United Airlines
Tue 3/316:05 pm
ORD
- CHA
Nonstop1h 49m
United Airlines
Deal found 3/12![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 8/267:30 am
CHA
- MDW
1 stop6h 00m
Delta
Sat 8/299:30 am
MDW
- CHA
1 stop4h 03m
Delta
Deal found 3/12![Delta logo]()
$269
This Delta deal was found by Cheapflights users on 3/16. 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.
Sat 5/210:40 am
CHA
- MDW
1 stop6h 46m
Delta
Sun 5/39:27 am
MDW
- CHA
1 stop3h 50m
Delta
Deal found 3/16![Delta logo]()
$269
This Southwest deal was found by Cheapflights users on 3/15. 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 4/156:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Sun 4/197:35 am
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 3/15![Southwest logo]()
$223
This United Airlines deal was found by Cheapflights users on 3/17. 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.
Sat 4/116:00 am
BNA
- STL
1 stop4h 45m
United Airlines
Sat 4/114:49 pm
STL
- BNA
1 stop5h 12m
United Airlines
Deal found 3/17![United Airlines logo]()
$271
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 6/247:30 am
CHA
- MDW
1 stop6h 00m
Delta
Sat 6/279:30 am
MDW
- CHA
1 stop4h 03m
Delta
Deal found 3/13![Delta logo]()
$269
This Southwest deal was found by Cheapflights users on 3/16. 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.
Sun 5/105:25 am
BNA
- STL
1 stop5h 20m
Southwest
Mon 5/118:45 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 3/16![Southwest logo]()
$223
Last-minute flights from Tennessee to IllinoisDiscover last-minute flight deals from Tennessee to Illinois. Data last updated March 17, 2026 and is based on user searches.
Discover last-minute flight deals from Tennessee to Illinois. Data last updated March 17, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 3/17. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/202:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Mon 3/239:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/17![Southern / Mokulele logo]()
$174
This Trip.com deal was found by Cheapflights users on 3/16. 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.
Mon 3/302:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Thu 4/29:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/16![Southern / Mokulele logo]()
$156
This Trip.com deal was found by Cheapflights users on 3/16. 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.
Tue 3/312:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Sat 4/49:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/16![Southern / Mokulele logo]()
$154
This Kiwi.com deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/62:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Sat 4/119:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/17![Southern / Mokulele logo]()
$171
This Delta deal was found by Cheapflights users on 3/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:59 pm
BNA
- STL
1 stop5h 59m
Delta
Mon 4/136:50 pm
STL
- BNA
1 stop4h 34m
Delta
Deal found 3/17![Delta logo]()
$157
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/87:30 am
MEM
- ORD
Nonstop1h 56m
United Airlines
Tue 4/143:45 pm
ORD
- MEM
Nonstop2h 02m
United Airlines
Deal found 3/12![United Airlines logo]()
$157
This Southwest deal was found by Cheapflights users on 3/17. 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.
Thu 4/99:55 pm
BNA
- STL
Nonstop1h 20m
Southwest
Mon 4/138:45 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 3/17![Southwest logo]()
$137
This SmartFares deal was found by Cheapflights users on 3/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/92:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Mon 4/139:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/17![Southern / Mokulele logo]()
$151
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/143:00 pm
MEM
- MDW
Nonstop1h 35m
Southwest
Wed 4/159:05 pm
MDW
- MEM
Nonstop1h 45m
Southwest
Deal found 3/12![Southwest logo]()
$157
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 4/145:15 am
MEM
- MDW
Nonstop1h 35m
Southwest
Tue 4/214:50 pm
MDW
- MEM
1 stop4h 55m
Southwest
Deal found 3/12![Southwest logo]()
$167
This CheapOair deal was found by Cheapflights users on 3/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Fri 4/179:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 3/15![Southern / Mokulele logo]()
$172
This Southwest deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1512:40 pm
BNA
- STL
2 stops5h 15m
Southwest
Thu 4/168:45 pm
STL
- BNA
Nonstop1h 10m
Southwest
Deal found 3/14![Southwest logo]()
$152
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 March 17, 2026.
Search for one-way flight options from Tennessee to Illinois. Find affordable one-way fares based on user searches. Data last updated March 17, 2026.
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 5/126:25 am
BNA
- STL
Nonstop1h 20m
Southwest
Deal found 3/13![Southwest logo]()
$49
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/137:35 pm
BNA
- STL
Nonstop1h 20m
Southwest
Deal found 3/13![Southwest logo]()
$69
This Trip.com deal was found by Cheapflights users on 3/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 3/15![Southern / Mokulele logo]()
$75
This Trip.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 4/132:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 3/13![Southern / Mokulele logo]()
$76
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 5/133:25 pm
BNA
- STL
1 stop4h 35m
Southwest
Deal found 3/13![Southwest logo]()
$79
This United Airlines deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/122:16 pm
MEM
- ORD
Nonstop2h 04m
United Airlines
Deal found 3/12![United Airlines logo]()
$79
This Southwest deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 5/125:15 am
MEM
- MDW
Nonstop1h 35m
Southwest
Deal found 3/13![Southwest logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 5/142:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 3/13![Southern / Mokulele logo]()
$82
This Southern / Mokulele deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 4/22:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 3/13![Southern / Mokulele logo]()
$83
This Delta deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” 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 5/136:43 pm
BNA
- STL
1 stop5h 16m
Delta
Deal found 3/13![Delta logo]()
$84
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” 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 5/49:55 pm
BNA
- STL
Nonstop1h 20m
Southwest
Deal found 3/12![Southwest logo]()
$86
This Delta deal was found by Cheapflights users on 3/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/166:43 pm
BNA
- STL
1 stop5h 16m
Delta
Deal found 3/15![Delta logo]()
$89
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 March 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $137 (Southwest) |
One-way from | $49 (Southwest) |
Popular in | January |
Cheapest in | September |
Average price | $267 |
Good round-trip deal | $113 or less |
Good one-way deal | $154 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 March 17, 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
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Sat 4/11
6:00 pm-11:58 pm
1 stop5h 58m
Lambert-St Louis
Tue 4/14
11:42 am-3:18 pm
1 stop3h 36m
$157
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Thu 4/9
6:00 am-10:50 am
1 stop4h 50m
Lambert-St Louis
Mon 4/13
5:40 am-9:30 am
1 stop3h 50m
$157
MemphisChicago
MEM - ORD
MEMORD
Memphis
Tue 4/14
9:50 am-11:53 am
Nonstop2h 03m
Chicago O'Hare Intl
Wed 4/15
8:03 pm-10:04 pm
Nonstop2h 01m
$157
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Mon 5/11
2:35 pm-6:36 pm
1 stop4h 01m
Lambert-St Louis
Sat 5/16
9:50 am-1:48 pm
1 stop3h 58m
$172
MemphisChicago
MEM - MDW
MEMMDW
Memphis
Tue 4/14
5:15 am-6:50 am
Nonstop1h 35m
Chicago Midway
Tue 4/21
10:15 am-5:35 pm
2 stops7h 20m
$172
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Thu 4/9
7:35 pm-11:58 pm
1 stop4h 23m
Lambert-St Louis
Mon 4/13
4:41 pm-9:09 pm
1 stop4h 28m
$176
MemphisChicago
MEM - MDW
MEMMDW
Memphis
Thu 5/14
5:05 am-6:40 am
Nonstop1h 35m
Chicago Midway
Mon 5/18
9:40 pm-11:25 pm
Nonstop1h 45m
$177
MemphisChicago
MEM - MDW
MEMMDW
Memphis
Fri 5/15
4:10 pm-5:45 pm
Nonstop1h 35m
Chicago Midway
Mon 5/18
9:40 pm-11:25 pm
Nonstop1h 45m
$177
MemphisChicago
MEM - MDW
MEMMDW
Memphis
Fri 5/8
5:05 am-6:40 am
Nonstop1h 35m
Chicago Midway
Mon 5/11
9:40 pm-11:25 pm
Nonstop1h 45m
$177
MemphisChicago
MEM - MDW
MEMMDW
Memphis
Tue 5/19
3:00 pm-4:35 pm
Nonstop1h 35m
Chicago Midway
Wed 5/20
10:05 am-11:45 am
Nonstop1h 40m
$177
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
MEM-ORD
MEM-MDW
BNA-ORD
TYS-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 Tennessee to Illinois
USTN-USIL
BNA-STL
MEM-ORD
MEM-MDW
BNA-ORD
What is the cheapest month to book a flight from Tennessee to Illinois?
Currently, November is the cheapest month in which you can book a flight from Tennessee to Illinois (average of $58). Flying from Tennessee to Illinois in February is currently the most expensive (average of $189). 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 March 17, 2026.
It’s optimal to fly from Tennessee to Illinois in the morning. By choosing this option you can save up to 23% on the cost of your flight, compared to a flight at noon.
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 March 14, 2026.
Travelers seeking maximum savings on their Tennessee to Illinois flight should consider departing on Wednesday at noon when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
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 March 17, 2026.
The most flights from USTN to USIL are scheduled on a Monday (63 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (22 on average).
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 March 17, 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.
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Entertainment
7.5
Comfort
8.0
Overall
8.0
Crew
8.6
Boarding
8.1
Food
7.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
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 March 17, 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 March 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$38 | Average$81 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$58 | Average$89 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$59 | Average$129 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$97 | Average$279 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$102 | Average$323 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$108 | Average$288 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$110 | Average$301 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$158 | Average$198 | FlexibilityNo cancel fee | On-timeN/A |