$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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
BNA — ORD
Feb 27 — Mar 61
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 January 28, 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 January 28, 2026.
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/245:08 am
MEM
- ORD
Nonstop2h 03m
American Airlines
Tue 3/39:05 am
ORD
- MEM
Nonstop2h 00m
American Airlines
Deal found 1/27![American Airlines logo]()
$97
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 2/243:05 pm
MEM
- MDW
Nonstop1h 40m
Southwest
Tue 3/38:10 am
MDW
- MEM
Nonstop1h 45m
Southwest
Deal found 1/27![Southwest logo]()
$97
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.
Wed 3/117:40 am
MEM
- ORD
1 stop5h 10m
Southwest
Wed 3/112:40 pm
ORD
- MEM
1 stop7h 40m
Southwest
Deal found 1/27![Southwest logo]()
$122
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 2/267:04 pm
MEM
- STL
1 stop11h 47m
Frontier
Sat 2/288:17 pm
STL
- MEM
1 stop22h 02m
Frontier
Deal found 1/26![Frontier logo]()
$133
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/177:23 pm
MEM
- ORD
Nonstop2h 01m
American Airlines
Thu 2/199:05 am
ORD
- MEM
Nonstop2h 00m
American Airlines
Deal found 1/28![American Airlines logo]()
$134
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.
Wed 3/255:05 am
MEM
- MDW
Nonstop1h 35m
Southwest
Thu 3/269:35 pm
MDW
- MEM
Nonstop1h 45m
Southwest
Deal found 1/27![Southwest logo]()
$134
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.
Fri 2/278:50 am
BNA
- STL
1 stop15h 37m
Multiple Airlines
Mon 3/23:49 pm
STL
- BNA
1 stop16h 40m
Multiple Airlines
Deal found 1/26![Multiple Airlines logo]()
$142
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/147:30 am
MEM
- ORD
Nonstop1h 56m
United Airlines
Tue 3/177:59 pm
ORD
- MEM
Nonstop2h 00m
United Airlines
Deal found 1/27![United Airlines logo]()
$144
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 2/173:30 pm
MEM
- MDW
Nonstop1h 35m
Southwest
Thu 2/1912:20 pm
MDW
- MEM
1 stop5h 20m
Southwest
Deal found 1/27![Southwest logo]()
$144
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.
Wed 2/188:15 am
MEM
- ORD
1 stop4h 45m
Southwest
Sat 2/211:00 pm
ORD
- MEM
1 stop7h 35m
Southwest
Deal found 1/27![Southwest logo]()
$154
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.
Wed 2/186:40 am
MEM
- MDW
1 stop7h 05m
Southwest
Sat 2/211:30 pm
MDW
- MEM
1 stop6h 15m
Southwest
Deal found 1/27![Southwest logo]()
$154
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/52:35 pm
BNA
- STL
1 stop4h 01m
Southern / Mokulele
Sat 2/79:50 am
STL
- BNA
1 stop3h 58m
Southern / Mokulele
Deal found 1/26![Southern / Mokulele logo]()
$155
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 January 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $97 (American Airlines) |
One-way from | $49 (Southwest) |
Popular in | December |
Cheapest in | September |
Average price | $232 |
Good round-trip deal | $198 or less |
Good one-way deal | $196 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 January 28, 2026.
Use the filters below to find and compare flights from Tennessee to Illinois that are best for you.
Fly from
Tennessee
Fly to
Illinois
Route
Depart
Return
Price
MemphisChicago
MEM - ORD
MEMORD
Memphis
Wed 3/11
7:30 am-9:26 am
Nonstop1h 56m
Chicago O'Hare Intl
Wed 3/11
7:59 pm-9:59 pm
Nonstop2h 00m
$97
MemphisChicago
MEM - MDW
MEMMDW
Memphis
Tue 2/24
3:05 pm-4:45 pm
Nonstop1h 40m
Chicago Midway
Tue 3/3
12:15 pm-5:10 pm
1 stop4h 55m
$107
MemphisChicago
MEM - ORD
MEMORD
Memphis
Wed 3/11
7:40 am-12:50 pm
1 stop5h 10m
Chicago O'Hare Intl
Wed 3/11
2:40 pm-10:20 pm
1 stop7h 40m
$122
MemphisSt. Louis
MEM - STL
MEMSTL
Memphis
Thu 2/26
7:04 pm-6:51 am
1 stop11h 47m
Lambert-St Louis
Sat 2/28
8:17 pm-6:19 pm
1 stop22h 02m
$133
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Fri 2/27
8:50 am-12:27 am
1 stop15h 37m
Lambert-St Louis
Mon 3/2
3:49 pm-8:29 am
1 stop16h 40m
$142
MemphisChicago
MEM - ORD
MEMORD
Memphis
Sat 3/14
7:30 am-9:26 am
Nonstop1h 56m
Chicago O'Hare Intl
Tue 3/17
7:59 pm-9:59 pm
Nonstop2h 00m
$144
MemphisChicago
MEM - MDW
MEMMDW
Memphis
Wed 3/25
6:45 pm-11:55 pm
1 stop5h 10m
Chicago Midway
Thu 3/26
9:35 pm-11:20 pm
Nonstop1h 45m
$144
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Thu 2/26
6:15 am-11:59 pm
1 stop17h 44m
Lambert-St Louis
Sun 3/1
10:11 pm-5:08 am
1 stop30h 57m
$159
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Fri 2/27
8:50 am-12:27 am
1 stop15h 37m
Lambert-St Louis
Sun 3/1
10:11 pm-5:08 am
1 stop30h 57m
$160
NashvilleSt. Louis
BNA - STL
BNASTL
Nashville Intl
Wed 3/4
2:54 pm-10:27 pm
1 stop7h 33m
Lambert-St Louis
Fri 3/6
9:50 am-1:48 pm
1 stop3h 58m
$167
Showing 1-10 of 60 results
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.
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
What is the cheapest month to book a flight from Tennessee to Illinois?
Currently, February is the cheapest month in which you can book a flight from Tennessee to Illinois (average of $37). Flying from Tennessee to Illinois in December is currently the most expensive (average of $109). 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 January 28, 2026.
It’s optimal to fly from Tennessee to Illinois in the morning. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the evening.
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 January 24, 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 January 28, 2026.
The most flights from USTN to USIL are scheduled on a Wednesday (49 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 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 January 28, 2026.
Peruse reviews from past customers who have flown with Southwest, Delta, and United 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.
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
8.0
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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 January 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$37 | Average$114 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$38 | Average$83 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$58 | Average$88 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$97 | Average$338 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$97 | Average$277 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$110 | Average$297 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$110 | Average$367 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$158 | Average$198 | FlexibilityNo cancel fee | On-timeN/A |