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$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 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
BNA — ORD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Tennessee to Illinois

Keep the following information in mind while searching for Tennessee to Illinois flight deals. Data was last updated September 15, 2025.

Round-trip from

$79
(Trip.com)

One-way from

$49
(Southwest)

Popular in

March

Cheapest in

September

Average price

$138

Good round-trip deal

$80 or less

Good one-way deal

$77 or less
From Tennessee to Illinois
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One-way flight from Tennessee to Illinois
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Highest demand for flights based on searches. 9% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Tennessee to Illinois.
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Price to beat on a one-way flight from Tennessee to Illinois.
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Find 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 September 15, 2025.

This Trip.com deal was found by Cheapflights users on 9/13. 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.
Fri 10/249:59 pmBNA - ORD
Nonstop1h 45mMultiple Airlines
Sun 10/261:26 pmORD - BNA
Nonstop1h 44mMultiple Airlines
Deal found 9/13$79
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/146:46 pmBNA - ORD
Nonstop1h 45mSpirit Airlines
Sun 11/164:01 pmORD - BNA
Nonstop1h 40mSpirit Airlines
Deal found 9/13$80
This Orbitz deal was found by Cheapflights users on 9/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/32:59 pmBNA - ORD
Nonstop1h 57mMultiple Airlines
Sun 10/51:26 pmORD - BNA
Nonstop1h 44mMultiple Airlines
Deal found 9/14$81
This Booking.com deal was found by Cheapflights users on 9/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/76:46 pmBNA - ORD
Nonstop1h 45mMultiple Airlines
Sun 11/96:10 pmORD - BNA
Nonstop1h 48mMultiple Airlines
Deal found 9/13$84
This Priceline deal was found by Cheapflights users on 9/14. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/93:24 pmBNA - ORD
Nonstop1h 55mMultiple Airlines
Sun 10/121:26 pmORD - BNA
Nonstop1h 44mMultiple Airlines
Deal found 9/14$86
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/32:59 pmBNA - ORD
Nonstop1h 57mFrontier
Mon 10/612:43 pmORD - BNA
Nonstop1h 43mFrontier
Deal found 9/14$88
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Fri 11/76:46 pmBNA - ORD
Nonstop1h 45mMultiple Airlines
Thu 11/136:06 pmORD - BNA
Nonstop1h 48mMultiple Airlines
Deal found 9/14$89
This Frontier deal was found by Cheapflights users on 9/13. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/63:11 pmBNA - ORD
Nonstop2h 05mFrontier
Fri 10/177:20 pmORD - BNA
Nonstop1h 44mFrontier
Deal found 9/13$90
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1710:44 amTYS - MDW
Nonstop1h 32mAllegiant Air
Mon 10/2012:08 pmMDW - TYS
Nonstop1h 24mAllegiant Air
Deal found 9/13$93
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
Mon 10/63:11 pmBNA - ORD
Nonstop2h 05mMultiple Airlines
Thu 10/161:26 pmORD - BNA
Nonstop1h 44mMultiple Airlines
Deal found 9/13$93
This Kiwi.com deal was found by Cheapflights users on 9/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/212:48 pmBNA - ORD
Nonstop2h 00mFrontier
Sun 10/512:43 pmORD - BNA
Nonstop1h 43mFrontier
Deal found 9/12$95
This Southwest deal was found by Cheapflights users on 9/14. 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 10/95:30 amBNA - MDW
Nonstop1h 35mSouthwest
Mon 10/139:30 pmMDW - BNA
Nonstop1h 25mSouthwest
Deal found 9/14$97

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 September 15, 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

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Tue 11/11

8:00 am-9:50 am

Nonstop1h 50m

Chicago O'Hare Intl

Tue 11/18

10:58 am-12:34 pm

Nonstop1h 36m

$97

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Thu 2/12

3:35 pm-8:40 pm

1 stop5h 05m

Chicago Midway

Thu 2/19

5:25 am-7:00 am

Nonstop1h 35m

$107

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Mon 11/3

7:50 am-12:40 pm

1 stop4h 50m

Chicago Midway

Mon 11/10

9:35 pm-11:00 pm

Nonstop1h 25m

$107

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Wed 10/15

7:05 am-8:40 am

Nonstop1h 35m

Chicago Midway

Wed 10/15

12:40 pm-5:30 pm

1 stop4h 50m

$107

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Wed 10/15

8:50 pm-10:25 pm

Nonstop1h 35m

Chicago Midway

Sat 10/18

12:50 pm-6:20 pm

1 stop5h 30m

$107

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Thu 10/9

6:25 pm-11:55 pm

1 stop5h 30m

Chicago Midway

Mon 10/13

9:30 pm-10:55 pm

Nonstop1h 25m

$107

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Thu 12/11

3:00 pm-8:30 pm

1 stop5h 30m

Chicago Midway

Sat 12/13

5:50 am-7:20 am

Nonstop1h 30m

$107

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Tue 11/11

10:20 am-12:15 pm

Nonstop1h 55m

Chicago O'Hare Intl

Tue 11/18

6:05 am-11:50 am

1 stop5h 45m

$107

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Wed 10/15

10:55 am-12:45 pm

Nonstop1h 50m

Chicago O'Hare Intl

Sat 10/18

1:30 pm-8:10 pm

1 stop6h 40m

$107

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Wed 11/12

7:45 am-1:00 pm

1 stop5h 15m

Chicago O'Hare Intl

Wed 11/19

1:45 pm-3:20 pm

Nonstop1h 35m

$107

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

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, August is the cheapest month in which you can book a flight from Tennessee to Illinois (average of $245). Flying from Tennessee to Illinois in March is currently the most expensive (average of $321). 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Tennessee to Illinois as you normally would.

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 September 15, 2025.

The most flights from USTN to USIL are scheduled on a Monday (64 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (38 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 September 15, 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
8.0
Very good
4,242 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
8.0
Very good
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Frontier
5.8
Fair
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

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 50m. Fly via United Airlines, Southwest, or Southern / Mokulele to get the fastest option. The distance between Tennessee and Illinois is about 410 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 $49 on Southwest. Other airlines that offer cheap prices include United Airlines from $49 and Spirit Airlines from $98 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, August is the cheapest month in which you can book a flight from Tennessee to Illinois (average of $245). Flying from Tennessee to Illinois in March is currently the most expensive (average of $321). 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

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$37Average$116FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$43Average$84FlexibilityNo cancel feeOn-time65%
Allegiant AirCheapest$58Average$83FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$97Average$341FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$98Average$261FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$104Average$353FlexibilityNo cancel feeOn-time69%
DeltaCheapest$110Average$377FlexibilityNo cancel feeOn-timeN/A
Denver Air ConnectionCheapest$187Average$204FlexibilityNo cancel feeOn-timeN/A

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