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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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TYS
Feb 11 — Feb 181
Tue 2/11
Tue 2/18
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 February 6, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$201
(Mytrip)

One-way from

$55
(Frontier)

Popular in

March

Cheapest in

August

Average price

$240

Good round-trip deal

$125 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. 5% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 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 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 February 6, 2025.

This American Airlines deal was found by Cheapflights users on 2/6. 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 2/153:37 pmPIA - TYS
1 stop7h 12mAmerican Airlines
Sat 2/2212:46 pmTYS - PIA
1 stop4h 07mAmerican Airlines
Deal found 2/6$199
This Mytrip deal was found by Cheapflights users on 2/5. 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 3/65:55 amORD - TYS
2 stops16h 23mMultiple Airlines
Mon 3/106:25 pmTYS - ORD
1 stop16h 14mMultiple Airlines
Deal found 2/5$201
This United Airlines deal was found by Cheapflights users on 2/4. 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 4/45:59 pmORD - TYS
1 stop5h 00mUnited Airlines
Fri 4/117:00 amTYS - ORD
Nonstop1h 57mUnited Airlines
Deal found 2/4$202
This Delta deal was found by Cheapflights users on 2/4. 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 2/188:35 amORD - TYS
1 stop6h 34mDelta
Tue 2/255:56 pmTYS - ORD
1 stop5h 40mDelta
Deal found 2/4$204
This eDestinos deal was found by Cheapflights users on 2/6. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/84:40 pmMDW - TYS
2 stops17h 23mMultiple Airlines
Thu 3/134:23 pmTYS - MDW
1 stop8h 54mMultiple Airlines
Deal found 2/6$211
This American Airlines deal was found by Cheapflights users on 2/5. 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 5/35:27 pmSTL - TYS
1 stop5h 28mAmerican Airlines
Mon 5/57:55 amTYS - STL
1 stop5h 24mAmerican Airlines
Deal found 2/5$214
This American Airlines deal was found by Cheapflights users on 2/5. 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 2/227:10 pmORD - TYS
Nonstop1h 38mAmerican Airlines
Sun 2/2311:43 amTYS - ORD
Nonstop1h 56mAmerican Airlines
Deal found 2/5$217
This Delta deal was found by Cheapflights users on 2/5. 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 2/212:08 pmMDW - TYS
1 stop6h 31mDelta
Tue 2/251:00 pmTYS - MDW
1 stop6h 11mDelta
Deal found 2/5$219
This United Airlines deal was found by Cheapflights users on 2/5. 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 3/75:33 pmSTL - TYS
1 stop4h 20mUnited Airlines
Sat 3/85:40 amTYS - STL
1 stop5h 28mUnited Airlines
Deal found 2/5$224
This United Airlines deal was found by Cheapflights users on 2/4. 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 3/75:18 pmPIA - TYS
1 stop4h 35mUnited Airlines
Thu 3/137:00 amTYS - PIA
1 stop4h 24mUnited Airlines
Deal found 2/4$229
This Frontier deal was found by Cheapflights users on 2/5. 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 3/66:45 amORD - TYS
1 stop7h 38mFrontier
Sun 3/94:43 pmTYS - ORD
1 stop8h 40mFrontier
Deal found 2/5$230
This Delta deal was found by Cheapflights users on 2/5. 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 5/145:40 pmSTL - TYS
1 stop5h 06mDelta
Sat 5/175:30 amTYS - STL
1 stop4h 23mDelta
Deal found 2/5$249

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 February 6, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Thu 3/6

5:55 am-11:18 pm

2 stops16h 23m

Knoxville McGhee Tyson

Mon 3/10

6:25 pm-9:39 am

1 stop16h 14m

$201

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Fri 4/4

5:59 pm-11:59 pm

1 stop5h 00m

Knoxville McGhee Tyson

Fri 4/11

7:00 am-7:57 am

Nonstop1h 57m

$202

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Tue 2/18

8:35 am-4:09 pm

1 stop6h 34m

Knoxville McGhee Tyson

Tue 2/25

5:56 pm-10:36 pm

1 stop5h 40m

$204

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Wed 3/5

5:05 pm-11:47 pm

1 stop5h 42m

Knoxville McGhee Tyson

Wed 3/12

7:50 am-12:36 pm

1 stop5h 46m

$209

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Sat 3/8

4:40 pm-11:03 am

2 stops17h 23m

Knoxville McGhee Tyson

Thu 3/13

4:23 pm-12:17 am

1 stop8h 54m

$211

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Sat 5/3

5:27 pm-11:55 pm

1 stop5h 28m

Knoxville McGhee Tyson

Mon 5/5

7:55 am-12:19 pm

1 stop5h 24m

$214

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Sat 2/22

7:10 pm-9:48 pm

Nonstop1h 38m

Knoxville McGhee Tyson

Sun 2/23

11:43 am-12:39 pm

Nonstop1h 56m

$217

St. LouisKnoxville

STL - TYS

STLTYS

Lambert-St Louis

Fri 3/7

5:33 pm-10:53 pm

1 stop4h 20m

Knoxville McGhee Tyson

Sat 3/8

5:40 am-10:08 am

1 stop5h 28m

$224

ChicagoKnoxville

ORD - TYS

ORDTYS

Chicago O'Hare Intl

Thu 3/6

6:45 am-3:23 pm

1 stop7h 38m

Knoxville McGhee Tyson

Sun 3/9

4:43 pm-12:23 am

1 stop8h 40m

$230

ChicagoKnoxville

MDW - TYS

MDWTYS

Chicago Midway

Thu 3/6

6:40 am-3:23 pm

1 stop7h 43m

Knoxville McGhee Tyson

Sun 3/9

4:43 pm-12:19 am

1 stop8h 36m

$230

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/4

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.

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 $295). 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 February 6, 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 February 6, 2025.

The most flights from USIL to TYS are scheduled on a Wednesday (16 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 February 6, 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
8,396 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

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
8,396 reviews
Delta
8.0
Very good
8,396 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

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
8,882 reviews
Delta
8.0
Very good
8,396 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

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
782 reviews
Delta
8.0
Very good
8,396 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

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
8,396 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

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
3,410 reviews
Delta
8.0
Very good
8,396 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Food

7.3

Comfort

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 ($55), American Airlines ($90), and Delta ($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 Qatar Airways (100%), Envoy Air (81%) or Air New Zealand (78%) 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 $129. 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 $295). 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
Corbin
Cherokee
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 February 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$59Average$139FlexibilityNo cancel feeOn-time88%
DeltaCheapest$160Average$329FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$162Average$400FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$181Average$353FlexibilityNo cancel feeOn-time69%
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