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$38+ Cheap flights from Tennessee to Illinois

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
BNA — ORD
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$38
(Frontier)

Popular in

March

Cheapest in

September

Average price

$197

Good round-trip deal

$191 or less

Good one-way deal

$108 or less
Provider with most accurate pricing for Nashville Intl-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Nashville Intl-Chicago (CHI) flights.
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From Tennessee to Illinois
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Highest demand for flights based on searches. 18% potential increase in price ($43 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in February 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 February 20, 2025.

This Priceline deal was found by Cheapflights users on 2/18. 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.
Tue 3/259:50 pmBNA - ORD
1 stop9h 44mMultiple Airlines
Wed 3/263:22 pmORD - BNA
Nonstop1h 39mMultiple Airlines
Deal found 2/18$57
This Cheapflightsfares deal was found by Cheapflights users on 2/19. 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 5/94:56 pmBNA - ORD
Nonstop1h 54mFrontier
Mon 5/122:20 pmORD - BNA
Nonstop1h 36mFrontier
Deal found 2/19$63
This Frontier deal was found by Cheapflights users on 2/19. 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.
Wed 4/26:00 pmBNA - MDW
1 stop6h 21mFrontier
Wed 4/96:45 amMDW - BNA
1 stop6h 22mFrontier
Deal found 2/19$110
This Mytrip deal was found by Cheapflights users on 2/18. 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.
Wed 4/29:50 pmBNA - ORD
1 stop9h 44mSpirit Airlines
Wed 4/99:09 amORD - BNA
1 stop6h 56mSpirit Airlines
Deal found 2/18$116
This Southwest deal was found by Cheapflights users on 2/20. 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 3/135:10 amBNA - MDW
Nonstop1h 40mSouthwest
Mon 3/179:45 pmMDW - BNA
Nonstop1h 30mSouthwest
Deal found 2/20$117
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Wed 3/55:30 amBNA - ORD
Nonstop1h 45mAmerican Airlines
Wed 3/123:18 pmORD - BNA
Nonstop1h 29mAmerican Airlines
Deal found 2/19$117
This Mytrip deal was found by Cheapflights users on 2/19. 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.
Thu 4/176:00 amBNA - STL
1 stop11h 16mMultiple Airlines
Tue 4/226:11 pmSTL - BNA
1 stop13h 11mMultiple Airlines
Deal found 2/19$147
This Southwest deal was found by Cheapflights users on 2/19. 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 4/115:35 amBNA - ORD
1 stop5h 10mSouthwest
Mon 4/147:00 amORD - BNA
2 stops11h 10mSouthwest
Deal found 2/19$156
This American Airlines deal was found by Cheapflights users on 2/19. 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.
Sat 4/55:36 amBNA - STL
1 stop3h 46mAmerican Airlines
Sat 4/129:18 amSTL - BNA
1 stop4h 20mAmerican Airlines
Deal found 2/19$159
This United Airlines deal was found by Cheapflights users on 2/20. 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 4/28:00 amBNA - STL
1 stop4h 20mUnited Airlines
Wed 4/910:40 amSTL - BNA
1 stop5h 17mUnited Airlines
Deal found 2/20$168
This Cheapflightsfares deal was found by Cheapflights users on 2/20. 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.
Thu 3/132:35 pmBNA - STL
1 stop4h 06mSouthern / Mokulele
Sat 3/159:50 amSTL - BNA
1 stop4h 05mSouthern / Mokulele
Deal found 2/20$172
This Delta deal was found by Cheapflights users on 2/20. 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 10/254:30 pmCHA - ORD
1 stop5h 51mDelta
Sat 11/88:55 amORD - CHA
1 stop4h 37mDelta
Deal found 2/20$189

Find flights from Tennessee to Illinois within your budget

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 February 20, 2025.

Fly from

Tennessee

Fly to

Illinois

Route

Depart

Return

Price

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Tue 3/25

9:50 pm-7:34 am

1 stop9h 44m

Chicago O'Hare Intl

Wed 3/26

3:22 pm-5:01 pm

Nonstop1h 39m

$57

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Fri 5/9

4:56 pm-6:50 pm

Nonstop1h 54m

Chicago O'Hare Intl

Mon 5/12

2:20 pm-3:56 pm

Nonstop1h 36m

$63

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Wed 4/2

6:00 pm-12:21 am

1 stop6h 21m

Chicago Midway

Wed 4/9

6:45 am-1:07 pm

1 stop6h 22m

$110

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Wed 4/2

9:50 pm-7:34 am

1 stop9h 44m

Chicago O'Hare Intl

Wed 4/9

6:30 am-4:05 pm

1 stop9h 35m

$116

NashvilleChicago

BNA - MDW

BNAMDW

Nashville Intl

Thu 3/13

5:10 am-6:50 am

Nonstop1h 40m

Chicago Midway

Mon 3/17

9:45 pm-11:15 pm

Nonstop1h 30m

$117

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Wed 3/5

5:30 am-7:15 am

Nonstop1h 45m

Chicago O'Hare Intl

Wed 3/12

3:18 pm-4:47 pm

Nonstop1h 29m

$117

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Thu 4/17

6:00 am-5:16 pm

1 stop11h 16m

Lambert-St Louis

Tue 4/22

6:11 pm-7:22 am

1 stop13h 11m

$147

NashvilleChicago

BNA - ORD

BNAORD

Nashville Intl

Fri 4/11

5:35 am-10:45 am

1 stop5h 10m

Chicago O'Hare Intl

Mon 4/14

7:00 am-6:10 pm

2 stops11h 10m

$156

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Sat 4/5

5:36 am-9:22 am

1 stop3h 46m

Lambert-St Louis

Sat 4/12

9:18 am-1:38 pm

1 stop4h 20m

$159

NashvilleSt. Louis

BNA - STL

BNASTL

Nashville Intl

Wed 4/2

8:00 am-12:20 pm

1 stop4h 20m

Lambert-St Louis

Wed 4/9

10:40 am-3:57 pm

1 stop5h 17m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from Tennessee to Illinois

Get recent, data-driven insights about flights from Tennessee to Illinois including ideal travel times, pricing trends, and more.

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 February 20, 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 February 20, 2025.

The most flights from USTN to USIL are scheduled on a Thursday (54 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (33 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 February 20, 2025.
To help decide which airline to fly from Tennessee to Illinois, see what other customers have to say about Southwest, Delta and JetBlue. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,220 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

JetBlue
7.4
Good
3,070 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,766 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Allegiant Air
7.3
Good
765 reviews
Southwest
8.1
Very good
4,411 reviews

Crew

8.7

Food

7.1

Comfort

8.1

Overall

8.1

Boarding

8.2

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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.

  • 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 $57 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $58 and Southwest from $59 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 6 airlines flying from Tennessee to Illinois

Discover the top 6 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$30Average$80FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$72Average$83FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$91Average$364FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$106Average$268FlexibilityNo cancel feeOn-time63%
DeltaCheapest$117Average$316FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$121Average$309FlexibilityNo cancel feeOn-time69%
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