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Knoxville

$50+ 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 6/16. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TYS
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$189
(United Airlines)

One-way from

$50
(Flightnetwork)

Popular in

December

Cheapest in

August

Average price

$283

Good round-trip deal

$86 or less

Good one-way deal

$56 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 May 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 May 1, 2025.

This United Airlines deal was found by Cheapflights users on 4/30. 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 5/302:00 pmORD - TYS
Nonstop1h 57mUnited Airlines
Fri 6/67:00 amTYS - ORD
Nonstop1h 57mUnited Airlines
Deal found 4/30$189
This American Airlines deal was found by Cheapflights users on 4/30. 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 6/1610:35 amORD - TYS
Nonstop1h 47mAmerican Airlines
Mon 6/306:39 pmTYS - ORD
Nonstop1h 55mAmerican Airlines
Deal found 4/30$191
This Delta deal was found by Cheapflights users on 4/29. 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.
Sun 5/255:40 pmSTL - TYS
1 stop5h 11mDelta
Fri 5/307:50 amTYS - STL
1 stop6h 29mDelta
Deal found 4/29$199
This Mytrip deal was found by Cheapflights users on 4/30. 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 5/308:04 pmMDW - TYS
2 stops25h 36mAllegiant Air
Fri 6/61:29 pmTYS - MDW
Nonstop1h 34mAllegiant Air
Deal found 4/30$202
This Delta deal was found by Cheapflights users on 4/30. 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 7/252:00 pmORD - TYS
1 stop6h 16mDelta
Tue 7/292:33 pmTYS - ORD
1 stop5h 16mDelta
Deal found 4/30$209
This Delta deal was found by Cheapflights users on 4/30. 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 5/294:15 pmMDW - TYS
1 stop6h 36mDelta
Wed 6/187:46 amTYS - MDW
1 stop5h 43mDelta
Deal found 4/30$209
This Mytrip deal was found by Cheapflights users on 4/30. 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 5/3012:41 pmORD - TYS
2 stops23h 09mMultiple Airlines
Mon 6/212:45 pmTYS - ORD
2 stops21h 05mMultiple Airlines
Deal found 4/30$211
This Frontier deal was found by Cheapflights users on 4/30. 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 6/56:00 amORD - TYS
1 stop9h 29mFrontier
Sun 6/85:25 pmTYS - ORD
1 stop7h 34mFrontier
Deal found 4/30$220
This American Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 5/274:01 pmSTL - TYS
1 stop4h 54mAmerican Airlines
Sat 5/315:20 amTYS - STL
1 stop5h 34mAmerican Airlines
Deal found 4/29$225
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/215:00 amPIA - TYS
1 stop4h 28mAmerican Airlines
Wed 5/285:58 pmTYS - PIA
1 stop6h 58mAmerican Airlines
Deal found 4/30$229
This United Airlines deal was found by Cheapflights users on 4/30. 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 5/145:25 pmPIA - TYS
1 stop4h 20mUnited Airlines
Tue 5/205:35 pmTYS - PIA
1 stop4h 58mUnited Airlines
Deal found 4/30$239
This Delta deal was found by Cheapflights users on 4/29. 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 6/105:27 pmMLI - TYS
1 stop5h 32mDelta
Tue 6/175:57 pmTYS - MLI
1 stop5h 52mDelta
Deal found 4/29$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 May 1, 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

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Fri 5/30

2:00 pm-4:57 pm

Nonstop1h 57m

Knoxville McGhee Tyson

Fri 6/6

7:00 am-7:57 am

Nonstop1h 57m

$189

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Mon 6/16

10:35 am-1:22 pm

Nonstop1h 47m

Knoxville McGhee Tyson

Mon 6/30

6:39 pm-7:34 pm

Nonstop1h 55m

$191

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Sun 5/25

5:40 pm-11:51 pm

1 stop5h 11m

Knoxville McGhee Tyson

Fri 5/30

7:50 am-1:19 pm

1 stop6h 29m

$199

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Fri 5/30

8:04 pm-10:40 pm

2 stops25h 36m

Knoxville McGhee Tyson

Fri 6/6

1:29 pm-2:03 pm

Nonstop1h 34m

$202

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Fri 7/25

2:00 pm-9:16 pm

1 stop6h 16m

Knoxville McGhee Tyson

Tue 7/29

2:33 pm-6:49 pm

1 stop5h 16m

$209

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Thu 5/29

4:15 pm-11:51 pm

1 stop6h 36m

Knoxville McGhee Tyson

Wed 6/18

7:46 am-12:29 pm

1 stop5h 43m

$209

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Fri 5/30

12:41 pm-12:50 pm

2 stops23h 09m

Knoxville McGhee Tyson

Mon 6/2

12:45 pm-8:50 am

2 stops21h 05m

$211

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Thu 6/5

6:00 am-4:29 pm

1 stop9h 29m

Knoxville McGhee Tyson

Sun 6/8

5:25 pm-11:59 pm

1 stop7h 34m

$220

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Tue 5/27

4:01 pm-9:55 pm

1 stop4h 54m

Knoxville McGhee Tyson

Sat 5/31

5:20 am-9:54 am

1 stop5h 34m

$225

PeoriaKnoxville

PIA - TYS

PIATYS

Greater Peoria

Wed 5/21

5:00 am-10:28 am

1 stop4h 28m

Knoxville McGhee Tyson

Wed 5/28

5:58 pm-11:56 pm

1 stop6h 58m

$229

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 37 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 May 1, 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 May 1, 2025.

The most flights from USIL to TYS are scheduled on a Wednesday (26 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 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 May 1, 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
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

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
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

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
8,696 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

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
734 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

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
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

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
3,287 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Crew

8.5

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 Allegiant Air ($50), United Airlines ($100), and Frontier ($110).

  • 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 (92%), Air Canada (85%) or Republic Airways (83%) 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 $371, our data shows the cheapest flight currently is $115. 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
Maryville
Oak Ridge
Alcoa
Murphy

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$59Average$141FlexibilityNo cancel feeOn-time88%
American AirlinesCheapest$169Average$478FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$180Average$343FlexibilityNo cancel feeOn-time69%
DeltaCheapest$188Average$373FlexibilityNo cancel feeOn-timeN/A

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