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Knoxville

$49+ Cheap flights from Illinois to Knoxville (TYS)

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TYS
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheap flight deals from Illinois to Knoxville

Keep the following information in mind while searching for Illinois to Knoxville flight deals. Data was last updated July 3, 2025.

Round-trip from

$109
(Mytrip)

One-way from

$49
(Mytrip)

Popular in

December

Cheapest in

August

Average price

$274

Good round-trip deal

$82 or less

Good one-way deal

$64 or less
From Illinois to Knoxville McGhee Tyson
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One-way flight from Illinois to Knoxville McGhee Tyson
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Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Price to beat on a round-trip flight from Illinois to Knoxville McGhee Tyson.
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Price to beat on a one-way flight from Illinois to Knoxville McGhee Tyson.
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Find flight deals from Illinois to Knoxville

Cheapest flights from Illinois to Knoxville
Explore the most affordable flight options available from Illinois to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Mytrip deal was found by Cheapflights users on 7/1. 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.
Fri 7/112:54 pmMDW - TYS
Nonstop1h 26mAllegiant Air
Mon 7/141:31 pmTYS - MDW
Nonstop1h 33mAllegiant Air
Deal found 7/1$109
This Priceline deal was found by Cheapflights users on 7/2. 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 8/145:40 amORD - TYS
1 stop9h 49mFrontier
Sun 8/175:25 pmTYS - ORD
1 stop8h 07mFrontier
Deal found 7/2$161
This American Airlines deal was found by Cheapflights users on 7/3. 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.
Sun 8/176:29 pmORD - TYS
Nonstop1h 44mAmerican Airlines
Sun 8/2412:56 pmTYS - ORD
Nonstop1h 53mAmerican Airlines
Deal found 7/3$188
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/217:47 pmORD - TYS
Nonstop1h 50mUnited Airlines
Tue 8/267:00 amTYS - ORD
Nonstop1h 55mUnited Airlines
Deal found 7/1$189
This Delta deal was found by Cheapflights users on 7/3. 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.
Fri 8/225:45 amORD - TYS
1 stop4h 18mDelta
Mon 8/255:19 pmTYS - ORD
1 stop6h 01mDelta
Deal found 7/3$209
This Delta deal was found by Cheapflights users on 7/2. 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 9/246:00 amMDW - TYS
1 stop6h 07mDelta
Tue 9/307:49 amTYS - MDW
1 stop5h 39mDelta
Deal found 7/2$209
This Mytrip deal was found by Cheapflights users on 7/2. 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.
Fri 9/196:30 amORD - TYS
2 stops15h 44mMultiple Airlines
Mon 9/227:00 pmTYS - ORD
2 stops23h 39mMultiple Airlines
Deal found 7/2$215
This American Airlines deal was found by Cheapflights users on 7/1. 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 8/1310:07 amPIA - TYS
1 stop5h 29mAmerican Airlines
Sun 8/178:25 pmTYS - PIA
1 stop4h 34mAmerican Airlines
Deal found 7/1$229
This Delta deal was found by Cheapflights users on 7/1. 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 11/110:51 amSTL - TYS
1 stop3h 14mDelta
Tue 11/47:30 amTYS - STL
1 stop6h 50mDelta
Deal found 7/1$229
This American Airlines deal was found by Cheapflights users on 7/2. 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 7/172:20 pmSTL - TYS
1 stop5h 50mAmerican Airlines
Thu 7/245:05 amTYS - STL
1 stop4h 10mAmerican Airlines
Deal found 7/2$234
This Mytrip deal was found by Cheapflights users on 7/2. 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.
Sun 9/77:55 pmSTL - TYS
1 stop22h 46mFrontier
Thu 9/118:26 pmTYS - STL
1 stop13h 40mFrontier
Deal found 7/2$240
This Delta deal was found by Cheapflights users on 7/2. 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 7/305:55 amMLI - TYS
1 stop4h 13mDelta
Wed 8/612:03 pmTYS - MLI
1 stop5h 43mDelta
Deal found 7/2$249

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Knoxville 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 July 3, 2025.
Use the filters below to find and compare flights from Illinois to Knoxville that are best for you.

Fly from

Illinois

Fly to

Knoxville

Route

Depart

Return

Price

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Fri 7/11

2:54 pm-5:20 pm

Nonstop1h 26m

Knoxville McGhee Tyson

Mon 7/14

1:31 pm-2:04 pm

Nonstop1h 33m

$109

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Thu 8/14

5:40 am-4:29 pm

1 stop9h 49m

Knoxville McGhee Tyson

Sun 8/17

5:25 pm-12:32 am

1 stop8h 07m

$161

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Sun 8/17

6:29 pm-9:13 pm

Nonstop1h 44m

Knoxville McGhee Tyson

Sun 8/24

12:56 pm-1:49 pm

Nonstop1h 53m

$188

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Thu 8/21

7:47 pm-10:37 pm

Nonstop1h 50m

Knoxville McGhee Tyson

Tue 8/26

7:00 am-7:55 am

Nonstop1h 55m

$189

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Fri 8/22

5:45 am-11:03 am

1 stop4h 18m

Knoxville McGhee Tyson

Mon 8/25

5:19 pm-10:20 pm

1 stop6h 01m

$209

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Wed 9/24

6:00 am-1:07 pm

1 stop6h 07m

Knoxville McGhee Tyson

Tue 9/30

7:49 am-12:28 pm

1 stop5h 39m

$209

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Fri 9/19

6:30 am-11:14 pm

2 stops15h 44m

Knoxville McGhee Tyson

Mon 9/22

7:00 pm-5:39 pm

2 stops23h 39m

$215

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Wed 8/13

10:07 am-4:36 pm

1 stop5h 29m

Knoxville McGhee Tyson

Sun 8/17

8:25 pm-11:59 pm

1 stop4h 34m

$229

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Sat 11/1

10:51 am-3:05 pm

1 stop3h 14m

Knoxville McGhee Tyson

Tue 11/4

7:30 am-1:20 pm

1 stop6h 50m

$229

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Thu 7/17

2:20 pm-9:10 pm

1 stop5h 50m

Knoxville McGhee Tyson

Thu 7/24

5:05 am-8:15 am

1 stop4h 10m

$234

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 34 results
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Best time to book a flight from Illinois to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville 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 Knoxville

What is the cheapest month to book a flight from Illinois to Knoxville?

Currently, January is the cheapest month in which you can book a flight from Illinois to Knoxville (average of $296). Flying from Illinois to Knoxville in March is currently the most expensive (average of $376). 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 TYS?

Find hourly flight availability from Illinois to Knoxville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 3, 2025.

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

Weekly flight availability from Illinois to Knoxville

Explore weekly flight availability from Illinois to Knoxville. 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 July 3, 2025.

The most flights from USIL to TYS are scheduled on a Thursday (26 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 on average).

Reviews of airlines servicing Knoxville

Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated July 3, 2025.
See what other customers who have flown with Delta, United Airlines, and American Airlines from Illinois to Knoxville have to say. 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.
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,970 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,845 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.2
Good
709 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Frontier
5.9
Fair
3,284 reviews
Delta
8.0
Very good
7,970 reviews

Crew

8.5

Food

7.3

Entertainment

7.9

Comfort

7.9

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Illinois to Knoxville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Knoxville from Illinois?

    Knoxville McGhee Tyson (TYS), located 11.3 mi from the city center, is the airport you fly into when you book flights from Illinois to Knoxville.

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

    The cheapest airlines for a one-way flight from Illinois to Knoxville are Allegiant Air ($49), Frontier ($95), and Delta ($126).

  • What are the most popular routes from Illinois to Knoxville?

    While some choose either Chicago Midway - Knoxville McGhee Tyson or Lambert-St Louis - Knoxville McGhee Tyson, Chicago O'Hare Intl - Knoxville McGhee Tyson is the most popular route from Illinois to Knoxville.

  • What are the most reliable airlines from Illinois to Knoxville?

    No one likes to see their flight delayed. When booking a flight from Illinois to Knoxville consider choosing GoJet (100%), Republic Airways (96%) or United Airlines (80%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Illinois to Knoxville?

    While on average a flight from Illinois to Knoxville is generally $261, our data shows the cheapest flight currently is $179. When looking at the most popular route, (Chicago O'Hare Intl - Knoxville McGhee Tyson), you can expect to pay $189 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Illinois to Knoxville 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 Illinois to Knoxville?

    Currently, January is the cheapest month in which you can book a flight from Illinois to Knoxville (average of $296). Flying from Illinois to Knoxville in March is currently the most expensive (average of $376). 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

Traveling to a place near Illinois?

Book flights to Illinois if you plan to visit one of these locations
Morristown
Cherokee
Corbin
Alcoa
Oak Ridge
Murphy

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Alternative routes for Illinois to Knoxville

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Illinois to Knoxville

Discover the top 4 airlines that operate flights from Illinois to Knoxville. 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$63Average$125FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$173Average$354FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$186Average$347FlexibilityNo cancel feeOn-time69%
DeltaCheapest$188Average$366FlexibilityNo cancel feeOn-timeN/A

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