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$85+ 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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TYS
Mar 13 — Mar 201
Thu 3/13
Thu 3/20
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 March 8, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$189
(United Airlines)

One-way from

$85
(Frontier)

Popular in

December

Cheapest in

August

Average price

$324

Good round-trip deal

$103 or less

Good one-way deal

$213 or less
Provider with most accurate pricing for Chicago (CHI)-Knoxville McGhee Tyson flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-Knoxville McGhee Tyson flights.
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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. 1% potential increase in price ($3 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 March 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 March 8, 2025.

This United Airlines deal was found by Cheapflights users on 3/6. 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.
Fri 4/47:35 pmORD - TYS
Nonstop1h 47mUnited Airlines
Sun 4/67:00 amTYS - ORD
Nonstop1h 57mUnited Airlines
Deal found 3/6$189
This Frontier deal was found by Cheapflights users on 3/7. 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.
Sun 3/306:50 amORD - TYS
1 stop7h 53mFrontier
Sun 4/64:43 pmTYS - ORD
1 stop8h 27mFrontier
Deal found 3/7$190
This Mytrip deal was found by Cheapflights users on 3/6. 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.
Sat 4/55:45 amORD - TYS
1 stop14h 25mMultiple Airlines
Tue 4/81:29 pmTYS - ORD
1 stop20h 55mMultiple Airlines
Deal found 3/6$191
This Delta deal was found by Cheapflights users on 3/6. 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.
Tue 4/86:00 amMDW - TYS
1 stop4h 12mDelta
Wed 4/95:00 pmTYS - MDW
1 stop6h 21mDelta
Deal found 3/6$199
This Booking.com deal was found by Cheapflights users on 3/7. 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.
Sat 4/126:51 pmSTL - TYS
1 stop19h 55mFrontier
Fri 4/1812:46 pmTYS - STL
1 stop21h 20mFrontier
Deal found 3/7$200
This Delta deal was found by Cheapflights users on 3/6. 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 4/185:34 pmORD - TYS
1 stop5h 14mDelta
Sun 4/2010:30 amTYS - ORD
1 stop6h 52mDelta
Deal found 3/6$204
This American Airlines deal was found by Cheapflights users on 3/6. 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 4/27:45 pmORD - TYS
Nonstop1h 43mAmerican Airlines
Sat 4/55:15 amTYS - ORD
Nonstop2h 07mAmerican Airlines
Deal found 3/6$205
This Mytrip deal was found by Cheapflights users on 3/7. 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 4/1310:38 amMLI - TYS
1 stop26h 49mAllegiant Air
Wed 4/162:53 pmTYS - MLI
1 stop17h 44mAllegiant Air
Deal found 3/7$213
This Frontier deal was found by Cheapflights users on 3/6. 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.
Thu 4/36:40 amMDW - TYS
1 stop8h 01mFrontier
Thu 4/104:31 pmTYS - MDW
1 stop8h 50mFrontier
Deal found 3/6$220
This American Airlines deal was found by Cheapflights users on 3/7. 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.
Mon 4/74:28 pmPIA - TYS
1 stop6h 17mAmerican Airlines
Mon 4/147:54 pmTYS - PIA
1 stop5h 02mAmerican Airlines
Deal found 3/7$229
This American Airlines deal was found by Cheapflights users on 3/6. 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.
Mon 5/261:59 pmSTL - TYS
1 stop4h 16mAmerican Airlines
Sat 5/316:35 amTYS - STL
1 stop6h 17mAmerican Airlines
Deal found 3/6$229
This Mytrip deal was found by Cheapflights users on 3/6. 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 5/2911:03 amMDW - TYS
1 stop26h 52mAllegiant Air
Sun 6/18:00 amTYS - MDW
1 stop25h 22mAllegiant Air
Deal found 3/6$233

Find flights from Illinois to Knoxville within your budget

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 March 8, 2025.

Fly from

Illinois

Fly to

Knoxville

Route

Depart

Return

Price

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Fri 4/4

7:35 pm-10:22 pm

Nonstop1h 47m

Knoxville McGhee Tyson

Fri 4/11

7:00 am-7:57 am

Nonstop1h 57m

$189

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Sun 3/30

6:50 am-3:43 pm

1 stop7h 53m

Knoxville McGhee Tyson

Sun 4/6

4:43 pm-12:10 am

1 stop8h 27m

$190

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Sat 4/5

5:45 am-9:10 pm

1 stop14h 25m

Knoxville McGhee Tyson

Tue 4/8

1:29 pm-9:24 am

1 stop20h 55m

$191

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Tue 4/8

6:00 am-11:12 am

1 stop4h 12m

Knoxville McGhee Tyson

Wed 4/9

5:00 pm-10:21 pm

1 stop6h 21m

$199

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Sat 4/12

6:51 pm-3:46 pm

1 stop19h 55m

Knoxville McGhee Tyson

Fri 4/18

12:46 pm-9:06 am

1 stop21h 20m

$200

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Fri 4/18

5:34 pm-11:48 pm

1 stop5h 14m

Knoxville McGhee Tyson

Sat 4/19

1:01 pm-7:00 pm

1 stop6h 59m

$204

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Wed 4/2

7:45 pm-10:28 pm

Nonstop1h 43m

Knoxville McGhee Tyson

Sat 4/5

5:15 am-6:22 am

Nonstop2h 07m

$205

MolineKnoxville

MLI - TYS

MLITYS

Moline Quad-City

Sun 4/13

10:38 am-2:27 pm

1 stop26h 49m

Knoxville McGhee Tyson

Wed 4/16

2:53 pm-7:37 am

1 stop17h 44m

$213

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Thu 4/3

6:40 am-3:41 pm

1 stop8h 01m

Knoxville McGhee Tyson

Thu 4/10

4:31 pm-12:21 am

1 stop8h 50m

$220

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Mon 4/7

4:28 pm-11:45 pm

1 stop6h 17m

Knoxville McGhee Tyson

Mon 4/14

7:54 pm-11:56 pm

1 stop5h 02m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/7

Showing 1-10 of 36 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.

Travel insights for flights from Illinois to Knoxville

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

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 $297). 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 March 8, 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.

Rainfall in Knoxville by month

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

In terms of precipitation, rainfall in Knoxville ranges from 2.7 - 4.8 inches per month. March is typically the wettest month, when rainfall can reach 4.8 in. October is typically the driest time to visit Knoxville when rainfall is around 2.7 in.

Temperature in Knoxville by month

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

If weather is an important factor for your trip to Knoxville, 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 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

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 March 8, 2025.
See what other customers who have flown with Delta, United Airlines and Allegiant Air from Illinois to Knoxville have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,024 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,024 reviews
Delta
8.0
Very good
8,024 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,649 reviews
Delta
8.0
Very good
8,024 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Allegiant Air
7.3
Good
748 reviews
Delta
8.0
Very good
8,024 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
8,024 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Frontier
6.0
Okay
3,314 reviews
Delta
8.0
Very good
8,024 reviews

Crew

8.5

Boarding

8.2

Food

7.3

Entertainment

7.9

Comfort

8.0

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 Frontier ($85), Delta ($100), and American Airlines ($100).

  • 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 ANA (83%), GoJet (82%) or Avianca (82%) 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 $255, our data shows the cheapest flight currently is $89. When looking at the most popular route, (Chicago O'Hare Intl - Knoxville McGhee Tyson), you can expect to pay $179 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 $297). 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
Maryville
Oak Ridge
Alcoa
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 March 8, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$59Average$139FlexibilityNo cancel feeOn-time88%
DeltaCheapest$160Average$331FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$161Average$420FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$181Average$345FlexibilityNo cancel feeOn-time69%
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