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$55+ 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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TYS
Jan 12 — Jan 191
Sun 1/12
Sun 1/19
1 adult, Economy
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Cheap flight deals from Illinois to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Knoxville (TYS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 7, 2025.

Round-trip from

$189
(United Airlines)

One-way from

$60
(FlightHub)
From Illinois to Knoxville McGhee Tyson
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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 January 7, 2025.

This United Airlines deal was found by Cheapflights users on 1/6. 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 2/148:15 pmORD - TYS
Nonstop1h 45mUnited Airlines
Sun 2/167:00 amTYS - ORD
Nonstop2h 03mUnited Airlines
Deal found 1/6$189
This Frontier deal was found by Cheapflights users on 1/6. 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 4/106:45 amORD - TYS
1 stop7h 40mFrontier
Sun 4/134:43 pmTYS - ORD
1 stop8h 32mFrontier
Deal found 1/6$190
This Frontier deal was found by Cheapflights users on 1/7. 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.
Thu 4/106:40 amMDW - TYS
1 stop7h 45mFrontier
Sun 4/134:43 pmTYS - MDW
1 stop8h 38mFrontier
Deal found 1/7$190
This American Airlines deal was found by Cheapflights users on 1/6. 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.
Fri 1/243:40 pmORD - TYS
Nonstop1h 41mAmerican Airlines
Fri 1/316:51 pmTYS - ORD
Nonstop1h 59mAmerican Airlines
Deal found 1/6$194
This Mytrip deal was found by Cheapflights users on 1/6. 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.
Wed 2/57:26 amORD - TYS
1 stop11h 33mMultiple Airlines
Wed 2/121:55 pmTYS - ORD
1 stop9h 08mMultiple Airlines
Deal found 1/6$201
This Delta deal was found by Cheapflights users on 1/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/74:55 pmORD - TYS
1 stop5h 52mDelta
Sat 2/81:00 pmTYS - ORD
1 stop7h 55mDelta
Deal found 1/7$209
This Delta deal was found by Cheapflights users on 1/6. 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.
Thu 2/206:00 amMDW - TYS
1 stop4h 23mDelta
Thu 2/277:25 amTYS - MDW
1 stop6h 40mDelta
Deal found 1/6$209
This American Airlines deal was found by Cheapflights users on 1/6. 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.
Sat 2/14:25 pmPIA - TYS
1 stop4h 02mAmerican Airlines
Fri 2/711:43 amTYS - PIA
1 stop5h 18mAmerican Airlines
Deal found 1/6$229
This Delta deal was found by Cheapflights users on 1/7. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/217:07 pmSTL - TYS
1 stop3h 40mDelta
Fri 2/285:45 amTYS - STL
1 stop4h 35mDelta
Deal found 1/7$229
This American Airlines deal was found by Cheapflights users on 1/6. 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.
Sat 2/13:10 pmSTL - TYS
2 stops7h 48mAmerican Airlines
Sun 2/24:08 pmTYS - STL
1 stop4h 15mAmerican Airlines
Deal found 1/6$234
This Cheapflightsfares deal was found by Cheapflights users on 1/7. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/232:54 pmMDW - TYS
Nonstop1h 28mAllegiant Air
Mon 5/261:31 pmTYS - MDW
Nonstop1h 33mAllegiant Air
Deal found 1/7$244
This United Airlines deal was found by Cheapflights users on 1/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/42:32 pmPIA - TYS
1 stop6h 50mUnited Airlines
Tue 4/87:00 amTYS - PIA
1 stop4h 12mUnited Airlines
Deal found 1/7$245

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 January 7, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Thu 2/6

10:35 am-1:18 pm

Nonstop1h 43m

Knoxville McGhee Tyson

Thu 2/13

7:00 am-8:03 am

Nonstop2h 03m

$189

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Thu 4/10

6:45 am-3:25 pm

1 stop7h 40m

Knoxville McGhee Tyson

Sun 4/13

4:43 pm-12:15 am

1 stop8h 32m

$190

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Thu 4/10

6:40 am-3:25 pm

1 stop7h 45m

Knoxville McGhee Tyson

Sun 4/13

4:43 pm-12:21 am

1 stop8h 38m

$190

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Thu 3/13

8:03 am-10:40 am

Nonstop1h 37m

Knoxville McGhee Tyson

Mon 3/17

6:50 pm-7:50 pm

Nonstop2h 00m

$204

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Fri 2/7

4:55 pm-11:47 pm

1 stop5h 52m

Knoxville McGhee Tyson

Sun 2/9

5:45 am-9:41 am

1 stop4h 56m

$209

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Fri 2/7

2:08 pm-9:39 pm

1 stop6h 31m

Knoxville McGhee Tyson

Sun 2/9

5:45 am-10:12 am

1 stop5h 27m

$209

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Sat 2/1

4:25 pm-9:27 pm

1 stop4h 02m

Knoxville McGhee Tyson

Fri 2/7

11:43 am-4:01 pm

1 stop5h 18m

$229

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Fri 2/21

7:07 pm-11:47 pm

1 stop3h 40m

Knoxville McGhee Tyson

Fri 2/28

5:45 am-9:20 am

1 stop4h 35m

$229

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Sat 2/1

3:10 pm-11:58 pm

2 stops7h 48m

Knoxville McGhee Tyson

Sun 2/2

4:08 pm-7:23 pm

1 stop4h 15m

$234

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Fri 5/23

2:54 pm-5:22 pm

Nonstop1h 28m

Knoxville McGhee Tyson

Mon 5/26

1:31 pm-2:04 pm

Nonstop1h 33m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/7

Showing 1-10 of 39 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 $303). 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 January 7, 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 January 7, 2025.

The most flights from USIL to TYS are scheduled on a Tuesday (17 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (6 on average).

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 January 7, 2025.
See what other customers who have flown with Delta, Frontier and United Airlines 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
8,503 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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

Delta
8.0
Very good
8,503 reviews
Delta
8.0
Very good
8,503 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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

United Airlines
7.4
Good
8,936 reviews
Delta
8.0
Very good
8,503 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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

Allegiant Air
7.4
Good
799 reviews
Delta
8.0
Very good
8,503 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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
8,503 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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

Frontier
6.1
Okay
3,429 reviews
Delta
8.0
Very good
8,503 reviews

Comfort

8.0

Food

7.3

Entertainment

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 10

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 ($60), Allegiant Air ($127), and Delta ($173).

  • 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 Republic Airways (94%), Royal Jordanian (92%) or Qatar Airways (91%) 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 $325, our data shows the cheapest flight currently is $84. 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 $303). 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.

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Alternative routes for Illinois to Knoxville

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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 January 7, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$59Average$140FlexibilityNo cancel feeOn-time88%
DeltaCheapest$160Average$322FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$163Average$399FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$180Average$354FlexibilityNo cancel feeOn-time69%
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