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$57+ Cheap flights from Knoxville to Austin (TYS - AUS)

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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — AUS
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Knoxville McGhee Tyson to Austin Bergstrom are usually found in October or September, booked 67 days in advance, depart on a Wednesday or Tuesday and return on a Saturday

Cheap flight deals from Knoxville to Austin

Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Austin (AUS). 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 August 14, 2025.

Round-trip from

$77
(lastminute.com)

One-way from

$57
(Cheapflightsfares)

Popular in

November

Cheapest in

October

Average price

$254

Good round-trip deal

$100 or less

Good one-way deal

$48 or less
From Knoxville McGhee Tyson to Austin Bergstrom
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One-way flight from Knoxville McGhee Tyson to Austin Bergstrom
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High demand for flights, 2% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Knoxville McGhee Tyson to Austin Bergstrom.
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Price to beat on a one-way flight from Knoxville McGhee Tyson to Austin Bergstrom.
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Find flight deals from Knoxville to Austin

Cheapest flights from Knoxville to Austin
Explore the most affordable flight options available from Knoxville to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This lastminute.com deal was found by Cheapflights users on 8/13. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/228:00 amTYS - AUS
Nonstop2h 32mAllegiant Air
Mon 8/2510:22 amAUS - TYS
Nonstop2h 17mAllegiant Air
Deal found 8/13$77
This Cheapflightsfares deal was found by Cheapflights users on 8/13. 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.
Thu 10/94:23 pmTYS - AUS
Nonstop2h 28mAllegiant Air
Mon 10/133:03 pmAUS - TYS
Nonstop2h 09mAllegiant Air
Deal found 8/13$113
This Cheapflightsfares deal was found by Cheapflights users on 8/14. 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 8/298:00 amTYS - AUS
Nonstop2h 32mAllegiant Air
Mon 9/110:22 amAUS - TYS
Nonstop2h 17mAllegiant Air
Deal found 8/14$133
This Cheapflightsfares deal was found by Cheapflights users on 8/14. 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 10/1712:45 pmTYS - AUS
Nonstop2h 28mAllegiant Air
Sun 10/196:41 pmAUS - TYS
Nonstop2h 09mAllegiant Air
Deal found 8/14$168
This Cheapflightsfares deal was found by Cheapflights users on 8/14. 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.
Thu 10/164:23 pmTYS - AUS
Nonstop2h 28mAllegiant Air
Mon 10/203:03 pmAUS - TYS
Nonstop2h 09mAllegiant Air
Deal found 8/14$179
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2212:45 pmTYS - AUS
Nonstop2h 22mMultiple Airlines
Sat 9/275:45 amAUS - TYS
1 stop28h 33mMultiple Airlines
Deal found 8/13$190
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/228:00 amTYS - AUS
Nonstop2h 32mMultiple Airlines
Mon 8/2512:41 pmAUS - TYS
2 stops29h 43mMultiple Airlines
Deal found 8/13$196
This Kiwi.com deal was found by Cheapflights users on 8/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/298:00 amTYS - AUS
Nonstop2h 32mMultiple Airlines
Sat 9/65:45 amAUS - TYS
1 stop28h 33mMultiple Airlines
Deal found 8/13$199

Cheapflights Fare Finder

 
Customize your flight search to find flights from Knoxville to Austin 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 August 14, 2025.
Use the filters below to find and compare flights from Knoxville to Austin that are best for you.

Fly from

Knoxville

Fly to

Austin

Route

Depart

Return

Price

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 8/22

8:00 am-9:32 am

Nonstop2h 32m

Austin Bergstrom

Mon 8/25

10:22 am-1:39 pm

Nonstop2h 17m

$77

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Thu 10/9

4:23 pm-5:51 pm

Nonstop2h 28m

Austin Bergstrom

Mon 10/13

3:03 pm-6:12 pm

Nonstop2h 09m

$113

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 8/29

8:00 am-9:32 am

Nonstop2h 32m

Austin Bergstrom

Mon 9/1

10:22 am-1:39 pm

Nonstop2h 17m

$133

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 10/17

12:45 pm-2:13 pm

Nonstop2h 28m

Austin Bergstrom

Sun 10/19

6:41 pm-9:50 pm

Nonstop2h 09m

$168

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Thu 10/16

4:23 pm-5:51 pm

Nonstop2h 28m

Austin Bergstrom

Mon 10/20

3:03 pm-6:12 pm

Nonstop2h 09m

$179

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 9/22

12:45 pm-2:07 pm

Nonstop2h 22m

Austin Bergstrom

Sat 9/27

5:45 am-11:18 am

1 stop28h 33m

$190

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 10/27

5:26 pm-6:54 pm

Nonstop2h 28m

$57

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 8/29

8:00 am-9:32 am

Nonstop2h 32m

$86

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 9/15

8:35 pm-8:58 pm

1 stop25h 23m

$88

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 10/27

6:27 pm-9:45 pm

1 stop28h 18m

$106

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 17 results
1
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Best time to book a flight from Knoxville to Austin

Have a flexible travel schedule? Discover the best time to fly to Austin from Knoxville 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 Knoxville to Austin

How far ahead should I book a flight from Knoxville to Austin?

Use this chart to determine the optimal time to book a round-trip flight from Knoxville to Austin. Price data was last updated on August 8, 2025.

Booking 67 days in advance of your planned departure date is, on average, the best time to get cheap flights from Knoxville to Austin. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Knoxville to Austin?

Currently, January is the cheapest month in which you can book a flight from Knoxville to Austin (average of $286). Flying from Knoxville to Austin in March is currently the most expensive (average of $362). 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 TYS to AUS?

Find hourly flight availability from Knoxville to Austin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

One of the essential ways to save on airfare from Knoxville to Austin is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 37% on airfare.

What is the cheapest day to fly from Knoxville to Austin?

Use this chart to determine the cheapest time to fly round-trip from Knoxville to Austin. Price data was last updated on August 10, 2025.

Travelers seeking maximum savings on their Knoxville to Austin flight should consider departing on Friday at noon when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Austin

Get insights into the airlines that provide service to Austin. 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 Austin. Reviews last updated August 14, 2025.
Read through reviews of airlines operating flights from Knoxville to Austin, such as Delta, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,916 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Allegiant Air
7.2
Good
701 reviews
Delta
8.0
Very good
7,980 reviews

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

Find useful and relevant information for your journey from Knoxville to Austin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Knoxville to Austin flight route?

    This flight path from Knoxville McGhee Tyson to Austin Bergstrom was viewed by 3 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • What are the cheapest airlines flying from Knoxville to Austin round-trip?

    Flying on Allegiant Air is currently your cheapest option to Austin, with prices starting at $87. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $219 and $228, respectively. Allegiant Air is 68% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest flights from Knoxville to Austin?

    The cheapest flight price from Knoxville to Austin is $42. On average you can expect to pay $100. The most popular route, (Knoxville McGhee Tyson - Austin Bergstrom), can usually be booked for $100.

  • Can I find deals for flights from Knoxville to Austin that include hotel bookings?

    Yes. In addition to deals on Knoxville to Austin flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Knoxville to Austin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Austin.

  • Can I find deals for business class flights from Knoxville to Austin?

    Yes. Cheapflights offers flight deals from Knoxville to Austin 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 Knoxville to Austin?

    Currently, January is the cheapest month in which you can book a flight from Knoxville to Austin (average of $286). Flying from Knoxville to Austin in March is currently the most expensive (average of $362). 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 Austin?

Book flights to Austin if you plan to visit one of these locations
San Marcos
Georgetown
Fredericksburg
Pflugerville
Dripping Springs
Cedar Park
Canyon Lake
Round Rock
Seguin
Horseshoe Bay

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Top 4 airlines flying from Knoxville to Austin

Discover the top 4 airlines that operate flights from Knoxville to Austin. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$87Average$134FlexibilityNo cancel feeOn-time88%
DeltaCheapest$219Average$309FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$228Average$341FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$248Average$388FlexibilityNo cancel feeOn-time69%

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