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$63+ 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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
BNA — ORD
Jan 15 — Jan 221
Thu 1/15
Thu 1/22
1 adult, Economy
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Cheap flight deals from Tennessee to Illinois

Cheapest flights from Tennessee to Illinois
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 December 16, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/222:35 pmBNA - STL
1 stop4h 01mSouthern / Mokulele
Fri 1/29:50 amSTL - BNA
1 stop3h 58mSouthern / Mokulele
Deal found 12/16$171
This Orbitz deal was found by Cheapflights users on 12/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/192:35 pmBNA - STL
1 stop4h 01mSouthern / Mokulele
Tue 12/239:50 amSTL - BNA
1 stop3h 58mSouthern / Mokulele
Deal found 12/15$172
This Southwest deal was found by Cheapflights users on 12/14. 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.
Thu 12/258:10 amBNA - MDW
Nonstop1h 45mSouthwest
Wed 1/286:00 amMDW - BNA
Nonstop1h 35mSouthwest
Deal found 12/14$193
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Thu 12/259:50 amBNA - ORD
Nonstop2h 04mUnited Airlines
Wed 1/287:40 amORD - BNA
Nonstop1h 50mUnited Airlines
Deal found 12/14$193
This Southwest deal was found by Cheapflights users on 12/14. 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.
Thu 12/2510:20 amBNA - ORD
Nonstop1h 55mSouthwest
Wed 1/282:15 pmORD - BNA
1 stop6h 40mSouthwest
Deal found 12/14$203
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Wed 12/318:38 amCHA - ORD
Nonstop2h 12mUnited Airlines
Fri 1/95:50 pmORD - CHA
Nonstop1h 53mUnited Airlines
Deal found 12/15$204
This Delta deal was found by Cheapflights users on 12/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/251:00 pmBNA - ORD
1 stop6h 38mDelta
Wed 1/285:30 amORD - BNA
1 stop4h 29mDelta
Deal found 12/14$213
This United Airlines deal was found by Cheapflights users on 12/16. 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 12/3112:15 pmCHA - ORD
Nonstop2h 11mUnited Airlines
Sun 1/42:17 pmORD - CHA
Nonstop1h 51mUnited Airlines
Deal found 12/16$219
This United Airlines deal was found by Cheapflights users on 12/15. 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.
Tue 12/306:45 amTYS - ORD
Nonstop2h 07mUnited Airlines
Sat 1/32:07 pmORD - TYS
Nonstop1h 53mUnited Airlines
Deal found 12/15$219
This Kiwi.com deal was found by Cheapflights users on 12/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:38 pmBNA - ORD
2 stops21h 55mMultiple Airlines
Tue 1/63:26 pmORD - BNA
1 stop18h 43mMultiple Airlines
Deal found 12/14$219
This Southwest deal was found by Cheapflights users on 12/14. 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 12/313:05 pmBNA - ORD
1 stop6h 45mSouthwest
Tue 1/61:45 pmORD - BNA
Nonstop1h 35mSouthwest
Deal found 12/14$233
This Delta deal was found by Cheapflights users on 12/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:35 amBNA - MDW
1 stop6h 51mDelta
Thu 1/19:29 amMDW - BNA
1 stop4h 13mDelta
Deal found 12/14$235

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 December 16, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$133
(United Airlines)

One-way from

$63
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$237

Good round-trip deal

$107 or less

Good one-way deal

$83 or less
Provider with most accurate pricing for Nashville Intl-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Nashville Intl-Chicago (CHI) flights.
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From Tennessee to Illinois
Search Deals
One-way flight from Tennessee to Illinois
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($37 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Tennessee to Illinois.
Search Deals
Price to beat on a one-way flight from Tennessee to Illinois.
Search Deals

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 December 16, 2025.
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

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Mon 1/12

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Fri 1/23

9:50 am-1:48 pm

1 stop3h 58m

$152

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Wed 1/14

11:45 am-1:20 pm

Nonstop1h 35m

Chicago Midway

Mon 1/26

6:00 am-7:35 am

Nonstop1h 35m

$171

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Thu 2/5

8:00 am-9:55 am

Nonstop1h 55m

Chicago O'Hare Intl

Mon 2/9

7:50 pm-9:42 pm

Nonstop1h 52m

$171

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Sun 1/11

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Sat 1/24

9:50 am-1:48 pm

1 stop3h 58m

$171

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Tue 1/20

8:30 pm-10:05 pm

Nonstop1h 35m

Chicago Midway

Thu 1/22

10:05 am-11:40 am

Nonstop1h 35m

$171

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Thu 1/8

8:30 pm-10:05 pm

Nonstop1h 35m

Chicago Midway

Sat 1/10

2:40 pm-4:10 pm

Nonstop1h 30m

$171

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Sat 1/17

5:45 am-7:30 am

Nonstop1h 45m

Chicago Midway

Mon 1/19

5:25 am-7:00 am

Nonstop1h 35m

$171

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Thu 1/8

7:25 am-9:10 am

Nonstop1h 45m

Chicago Midway

Mon 1/12

10:05 am-11:40 am

Nonstop1h 35m

$171

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Wed 1/14

10:20 am-12:15 pm

Nonstop1h 55m

Chicago O'Hare Intl

Sat 1/17

1:45 pm-3:20 pm

Nonstop1h 35m

$171

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Tue 2/17

2:35 pm-6:36 pm

1 stop4h 01m

Lambert-St Louis

Sat 2/21

9:50 am-1:48 pm

1 stop3h 58m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Showing 1-10 of 60 results
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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 $91). 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 December 16, 2025.

It’s optimal to fly from Tennessee to Illinois at noon. By choosing this option you can save up to 8% 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 December 16, 2024.

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.

How much does it cost to fly round-trip from Tennessee to Illinois?

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 December 16, 2025.
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.
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,008 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
United Airlines
7.4
Good
9,092 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,049 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,082 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Overall

7.9

Comfort

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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.

  • How long is the flight from Tennessee to Illinois?

    There are many flights that can get you from Tennessee to Illinois in 1h 35m. Fly via Southern / Mokulele, Southwest, or United Airlines to get the fastest option. The distance between Tennessee and Illinois is about 395 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Tennessee to Illinois one-way?

    One-way options have recently been found by users for as low as $29 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $33 and Allegiant Air from $39 one-way.

  • Can I find deals for flights from Tennessee to Illinois that include hotel bookings?

    Yes. In addition to deals on Tennessee to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Tennessee to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Tennessee to Illinois.

  • Can I find deals for business class flights from Tennessee to Illinois?

    Yes. Cheapflights offers flight deals from Tennessee to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $91). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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.
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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 December 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$37Average$117FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$43Average$82FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$58Average$88FlexibilityNo cancel feeOn-time88%
SouthwestCheapest$97Average$263FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$107Average$342FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$110Average$286FlexibilityNo cancel feeOn-time71%
DeltaCheapest$110Average$361FlexibilityNo cancel feeOn-timeN/A
Denver Air ConnectionCheapest$187Average$203FlexibilityNo cancel feeOn-timeN/A

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