$49+ Cheap flights from Illinois to Tennessee
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 4/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — BNA
Feb 27 — Mar 61
1 adult, Economy
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Cheapest flights from Illinois to TennesseeExplore the most affordable flight options available from Illinois to Tennessee. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.
Explore the most affordable flight options available from Illinois to Tennessee. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 28, 2026.
This Southwest deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/178:20 am
STL
- BNA
Nonstop1h 15m
Southwest
Thu 2/193:30 pm
BNA
- STL
1 stop4h 30m
Southwest
Deal found 1/27![Southwest logo]()
$144
This Southwest deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/198:25 am
STL
- BNA
1 stop6h 05m
Southwest
Tue 2/2410:10 am
BNA
- STL
1 stop5h 40m
Southwest
Deal found 1/28![Southwest logo]()
$154
This Trip.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/29:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Fri 2/62:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 1/27![Southern / Mokulele logo]()
$155
This Trip.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/29:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Thu 3/52:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 1/28![Southern / Mokulele logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/319:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Mon 2/22:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 1/26![Southern / Mokulele logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 1/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/69:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Mon 2/92:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 1/27![Southern / Mokulele logo]()
$171
This American Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/510:10 pm
ORD
- MEM
Nonstop1h 53m
American Airlines
Wed 3/117:01 am
MEM
- ORD
Nonstop2h 04m
American Airlines
Deal found 1/26![American Airlines logo]()
$171
This Southern / Mokulele deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southern / Mokulele is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/269:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Sun 3/12:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 1/26![Southern / Mokulele logo]()
$172
This CheapOair deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/179:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Mon 4/202:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Deal found 1/28![Southern / Mokulele logo]()
$173
This Kiwi.com deal was found by Cheapflights users on 1/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:22 pm
STL
- BNA
2 stops23h 26m
Multiple Airlines
Thu 3/52:35 pm
BNA
- STL
1 stop4h 01m
Multiple Airlines
Deal found 1/28![Multiple Airlines logo]()
$178
This CheapOair deal was found by Cheapflights users on 1/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/95:32 pm
ORD
- BNA
1 stop13h 53m
Spirit Airlines
Tue 2/108:12 pm
BNA
- ORD
1 stop15h 10m
Spirit Airlines
Deal found 1/25![Spirit Airlines logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/59:23 am
ORD
- BNA
2 stops28h 22m
Multiple Airlines
Wed 2/118:12 pm
BNA
- ORD
1 stop27h 12m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$189
Find flight deals from Illinois to Tennessee
Keep the following information in mind while searching for Illinois to Tennessee flight deals. Data was last updated January 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $144 (Southwest) |
One-way from | $49 (Southwest) |
Popular in | November |
Cheapest in | December |
Average price | $244 |
Good round-trip deal | $121 or less |
Good one-way deal | $56 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Tennessee 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 January 28, 2026.
Use the filters below to find and compare flights from Illinois to Tennessee that are best for you.
Fly from
Illinois
Fly to
Tennessee
Route
Depart
Return
Price
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Thu 2/19
2:20 pm-8:05 pm
1 stop5h 45m
Nashville Intl
Tue 2/24
8:35 pm-9:55 pm
Nonstop1h 20m
$144
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Tue 2/17
2:35 pm-3:45 pm
Nonstop1h 10m
Nashville Intl
Thu 2/19
1:20 pm-7:30 pm
2 stops6h 10m
$149
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Fri 2/27
9:50 am-1:48 pm
1 stop3h 58m
Nashville Intl
Sun 3/1
2:35 pm-6:36 pm
1 stop4h 01m
$155
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Mon 3/2
9:50 am-1:48 pm
1 stop3h 58m
Nashville Intl
Thu 3/5
2:35 pm-6:36 pm
1 stop4h 01m
$156
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Fri 3/20
9:50 am-1:55 pm
1 stop4h 05m
Nashville Intl
Sun 3/22
2:35 pm-6:41 pm
1 stop4h 06m
$169
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Thu 3/5
9:50 am-1:48 pm
1 stop3h 58m
Nashville Intl
Mon 3/9
2:35 pm-6:41 pm
1 stop4h 06m
$171
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Fri 2/13
9:50 am-1:48 pm
1 stop3h 58m
Nashville Intl
Sun 2/15
2:35 pm-6:36 pm
1 stop4h 01m
$171
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Mon 2/23
9:50 am-1:48 pm
1 stop3h 58m
Nashville Intl
Thu 2/26
2:35 pm-6:36 pm
1 stop4h 01m
$172
St. LouisNashville
STL - BNA
STLBNA
Lambert-St Louis
Fri 2/27
9:50 am-1:48 pm
1 stop3h 58m
Nashville Intl
Mon 3/2
2:35 pm-6:36 pm
1 stop4h 01m
$172
ChicagoKnoxville
ORD - TYS
ORDTYS
Chicago O'Hare Intl
Thu 2/26
7:25 am-10:12 am
Nonstop1h 47m
Knoxville McGhee Tyson
Sat 2/28
6:45 am-7:47 am
Nonstop2h 02m
$189
Showing 1-10 of 60 results
Best time to book a flight from Illinois to Tennessee
Have a flexible travel schedule? Discover the best time to fly to Tennessee from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Illinois to Tennessee
What is the cheapest month to book a flight from Illinois to Tennessee?
Currently, February is the cheapest month in which you can book a flight from Illinois to Tennessee (average of $37). Flying from Illinois to Tennessee in June is currently the most expensive (average of $79). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IL to TN?
Find hourly flight availability from Illinois to Tennessee. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 28, 2026.
When flying from Illinois to Tennessee, 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 16% versus a flight at noon.
What is the cheapest day to fly from Illinois to Tennessee?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Tennessee. Price data was last updated on October 19, 2025.
Travelers seeking maximum savings on their Illinois to Tennessee flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Illinois to Tennessee
Explore weekly flight availability from Illinois to Tennessee. 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 January 28, 2026.
The most flights from USIL to USTN are scheduled on a Tuesday (42 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).
Reviews of airlines servicing Tennessee
Get insights into the airlines that provide service to Tennessee. 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 Tennessee. Reviews last updated January 28, 2026.
See what other customers who have flown with Southwest, United Airlines, and American Airlines from Illinois to Tennessee have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Overall
8.0
Crew
8.6
Food
7.0
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Related info for your journey
Find useful and relevant information for your journey from Illinois to Tennessee. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to Tennessee
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from Illinois to Tennessee
Discover the top 8 airlines that operate flights from Illinois to Tennessee. 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 January 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$37 | Average$114 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$38 | Average$86 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$75 | Average$138 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$97 | Average$264 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$109 | Average$329 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$115 | Average$352 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$138 | Average$276 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$156 | Average$192 | FlexibilityNo cancel fee | On-timeN/A |