$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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Illinois to Knoxville with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 June 12, 2025.
Round-trip from | $136 (Cheapflightsfares) |
|---|---|
One-way from | $49 (Booking.com) |
Popular in | December |
Cheapest in | August |
Average price | $274 |
Good round-trip deal | $80 or less |
Good one-way deal | $49 or less |
Find flight deals from Illinois to Knoxville
Cheapest flights from Illinois to KnoxvilleExplore 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 June 12, 2025.
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 June 12, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 6/9. 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.
This American Airlines deal was found by Cheapflights users on 6/11. 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.
This United Airlines deal was found by Cheapflights users on 6/10. 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.
This Delta deal was found by Cheapflights users on 6/11. 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.
This Delta deal was found by Cheapflights users on 6/11. 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.
This eDestinos deal was found by Cheapflights users on 6/11. 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.
This Mytrip deal was found by Cheapflights users on 6/10. 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.
This Delta deal was found by Cheapflights users on 6/10. 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.
This American Airlines deal was found by Cheapflights users on 6/10. 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.
This Mytrip deal was found by Cheapflights users on 6/11. 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.
This Mytrip deal was found by Cheapflights users on 6/11. 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.
This Mytrip deal was found by Cheapflights users on 6/10. 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.
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 June 12, 2025.
Use the filters below to find and compare flights from Illinois to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
ChicagoKnoxville
MDW - TYS
MDWTYS
Chicago Midway
Mon 8/4
2:46 pm-5:12 pm
Nonstop1h 26m
Knoxville McGhee Tyson
Mon 8/11
1:23 pm-1:56 pm
Nonstop1h 33m
ChicagoKnoxville
ORD - TYS
ORDTYS
Chicago O'Hare Intl
Sat 9/6
6:14 pm-9:00 pm
Nonstop1h 46m
Knoxville McGhee Tyson
Sat 9/13
3:10 pm-4:10 pm
Nonstop2h 00m
ChicagoKnoxville
ORD - TYS
ORDTYS
Chicago O'Hare Intl
Sat 6/28
7:50 pm-10:35 pm
Nonstop1h 45m
Knoxville McGhee Tyson
Mon 6/30
7:00 am-7:57 am
Nonstop1h 57m
ChicagoKnoxville
ORD - TYS
ORDTYS
Chicago O'Hare Intl
Tue 7/22
2:00 pm-9:16 pm
1 stop6h 16m
Knoxville McGhee Tyson
Mon 7/28
6:19 pm-12:09 am
1 stop6h 50m
ChicagoKnoxville
MDW - TYS
MDWTYS
Chicago Midway
Fri 8/15
10:11 am-5:19 pm
1 stop6h 08m
Knoxville McGhee Tyson
Sun 8/17
5:45 am-9:16 am
1 stop4h 31m
ChicagoKnoxville
MDW - TYS
MDWTYS
Chicago Midway
Fri 7/25
2:54 pm-5:20 pm
Nonstop1h 26m
Knoxville McGhee Tyson
Mon 7/28
6:00 am-3:06 pm
1 stop10h 06m
ChicagoKnoxville
ORD - TYS
ORDTYS
Chicago O'Hare Intl
Thu 7/17
6:15 pm-4:12 pm
1 stop20h 57m
Knoxville McGhee Tyson
Mon 7/21
11:01 am-5:27 pm
1 stop7h 26m
St. LouisKnoxville
STL - TYS
STLTYS
Lambert-St Louis
Tue 7/8
1:29 pm-7:01 pm
1 stop4h 32m
Knoxville McGhee Tyson
Tue 7/15
5:12 pm-8:36 pm
1 stop4h 24m
St. LouisKnoxville
STL - TYS
STLTYS
Lambert-St Louis
Tue 7/8
5:27 pm-11:52 pm
1 stop5h 25m
Knoxville McGhee Tyson
Sat 7/12
8:22 pm-11:59 pm
1 stop4h 37m
BloomingtonKnoxville
BMI - TYS
BMITYS
Bloomington-Normal
Thu 7/24
8:11 pm-9:20 pm
1 stop24h 09m
Knoxville McGhee Tyson
Sun 7/27
7:10 am-7:46 am
1 stop25h 36m
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.
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 June 12, 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 June 12, 2025.
The most flights from USIL to TYS are scheduled on a Tuesday (27 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 June 12, 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.
Boarding
Comfort
Food
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Food
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Food
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Food
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Food
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
Boarding
Comfort
Food
Overall
Entertainment
Crew
Reviews
Kim,May 2025
PIH - SLC
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.
Traveling to a place near Illinois?
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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.
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 June 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$63 | Average$124 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$169 | Average$418 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$184 | Average$345 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$188 | Average$353 | FlexibilityNo cancel fee | On-timeN/A |