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$75+ 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — AUS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 March, booked 58 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 September 11, 2025.

Round-trip from

$127
(Kiwi.com)

One-way from

$75
(Cheapflightsfares)

Popular in

November

Cheapest in

October

Average price

$248

Good round-trip deal

$76 or less

Good one-way deal

$62 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, 4% 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 September 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 September 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/11. 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.
Thu 10/164:23 pmTYS - AUS
Nonstop2h 28mAllegiant Air
Mon 10/277:44 pmAUS - TYS
Nonstop2h 09mAllegiant Air
Deal found 9/11$122
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1912:45 pmTYS - AUS
Nonstop2h 22mAllegiant Air
Mon 9/222:57 pmAUS - TYS
Nonstop2h 13mAllegiant Air
Deal found 9/9$146
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2612:45 pmTYS - AUS
Nonstop2h 22mAllegiant Air
Mon 9/292:57 pmAUS - TYS
Nonstop2h 13mAllegiant Air
Deal found 9/11$147
This Cheapflightsfares deal was found by Cheapflights users on 9/11. 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 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 9/11$153
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 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 9/10$169
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/164:23 pmTYS - AUS
Nonstop2h 28mMultiple Airlines
Mon 10/2711:30 amAUS - TYS
1 stop22h 03mMultiple Airlines
Deal found 9/10$174
This Frontier deal was found by Cheapflights users on 9/10. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:40 pmTYS - AUS
2 stops16h 04mFrontier
Mon 9/296:30 amAUS - TYS
1 stop12h 15mFrontier
Deal found 9/10$194
This Cheapflightsfares deal was found by Cheapflights users on 9/10. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/1012:45 pmTYS - AUS
Nonstop2h 28mAllegiant Air
Fri 10/173:03 pmAUS - TYS
Nonstop2h 09mAllegiant Air
Deal found 9/10$197

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 September 11, 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

Thu 10/16

4:23 pm-5:51 pm

Nonstop2h 28m

Austin Bergstrom

Mon 10/27

7:44 pm-10:53 pm

Nonstop2h 09m

$122

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Thu 10/16

4:23 pm-5:51 pm

Nonstop2h 28m

Austin Bergstrom

Mon 10/27

7:20 am-10:33 am

1 stop26h 13m

$163

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

$169

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 10/24

12:45 pm-2:13 pm

Nonstop2h 28m

Austin Bergstrom

Sun 10/26

7:20 am-8:25 pm

1 stop12h 05m

$219

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 10/10

12:45 pm-2:13 pm

Nonstop2h 28m

Austin Bergstrom

Fri 10/17

9:56 am-7:50 am

1 stop20h 54m

$220

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Wed 9/24

4:37 pm-9:06 pm

1 stop5h 29m

Austin Bergstrom

Tue 9/30

2:38 pm-11:03 pm

1 stop7h 25m

$232

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Wed 9/24

4:31 pm-11:02 pm

1 stop7h 31m

Austin Bergstrom

Sat 9/27

5:45 am-3:41 pm

1 stop8h 56m

$245

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 9/26

12:45 pm-2:07 pm

Nonstop2h 22m

Austin Bergstrom

Mon 9/29

6:30 am-7:45 pm

1 stop12h 15m

$246

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 11/7

12:50 pm-2:29 pm

Nonstop2h 39m

$77

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Tue 10/21

6:00 am-9:37 am

1 stop4h 37m

$93

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 18 results
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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 29, 2025.

Booking 58 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, August is the cheapest month in which you can book a flight from Knoxville to Austin (average of $285). 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 September 11, 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 evening tend to be the most expensive. A flight at noon could potentially save you up to 30% 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 September 7, 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.

How much does it cost to fly round-trip from Knoxville to Austin?

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 September 11, 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
7,960 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

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
8,937 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

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
7,960 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

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
702 reviews
Delta
8.0
Very good
7,960 reviews

Crew

8.5

Overall

8.0

Entertainment

7.9

Comfort

7.9

Food

7.3

Boarding

8.2

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.

  • How long is the flight from Knoxville to Austin?

    Departing from Knoxville to Austin will take you 2h 28m. Knoxville and Austin are separated by a distance of 881 mi. Generally, flights for this route are nonstop.

  • 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 $86. Additional round-trip tickets that might be worth considering are offered by Delta and American Airlines, with the lowest prices starting at $216 and $229, 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 $48. On average you can expect to pay $123. The most popular route, (Knoxville McGhee Tyson - Austin Bergstrom), can usually be booked for $127.

  • 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, August is the cheapest month in which you can book a flight from Knoxville to Austin (average of $285). 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
Round Rock
Fredericksburg
Pflugerville
Dripping Springs
Georgetown
Cedar Park
Canyon Lake
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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$86Average$136FlexibilityNo cancel feeOn-time88%
DeltaCheapest$216Average$315FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$229Average$341FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$248Average$388FlexibilityNo cancel feeOn-time69%

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