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$127+ 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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — AUS
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
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 December, booked 58 days in advance, depart on a Tuesday or Friday 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 January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$144
(Kiwi.com)

One-way from

$127
(Kiwi.com)

Popular in

November

Cheapest in

October

Average price

$308

Good round-trip deal

$126 or less
Provider with most accurate pricing for Knoxville McGhee Tyson-Austin Bergstrom flight deals.
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Provider most trusted by Cheapflights users for Knoxville McGhee Tyson-Austin Bergstrom flights.
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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, 6% 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 January 2026
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Price to beat on a round-trip 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 January 14, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/13. 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 6/16:00 am
TYS
-
AUS
Nonstop2h 36m
Allegiant Air
Mon 6/88:38 am
AUS
-
TYS
Nonstop2h 21m
Allegiant Air
Deal found 1/13$144
This Mytrip deal was found by Cheapflights users on 1/13. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:13 pm
TYS
-
AUS
1 stop28h 00m
Frontier
Thu 3/510:06 am
AUS
-
TYS
1 stop28h 19m
Frontier
Deal found 1/13$188
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/612:55 pm
TYS
-
AUS
1 stop22h 26m
Multiple Airlines
Wed 2/114:59 pm
AUS
-
TYS
2 stops28h 26m
Multiple Airlines
Deal found 1/14$222
This Kiwi.com deal was found by Cheapflights users on 1/13. 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 6/16:00 am
TYS
-
AUS
Nonstop2h 36m
Multiple Airlines
Tue 6/97:20 am
AUS
-
TYS
1 stop7h 52m
Multiple Airlines
Deal found 1/13$246
This Kiwi.com deal was found by Cheapflights users on 1/13. 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.
Thu 1/299:29 am
TYS
-
AUS
1 stop13h 06m
Multiple Airlines
Mon 2/26:55 am
AUS
-
TYS
1 stop7h 40m
Multiple Airlines
Deal found 1/13$253
This Kiwi.com deal was found by Cheapflights users on 1/13. 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.
Tue 2/31:00 pm
TYS
-
AUS
1 stop28h 04m
Multiple Airlines
Thu 2/124:35 pm
AUS
-
TYS
2 stops30h 03m
Multiple Airlines
Deal found 1/13$257
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/127:00 am
TYS
-
AUS
1 stop14h 53m
Multiple Airlines
Mon 2/166:45 am
AUS
-
TYS
1 stop11h 33m
Multiple Airlines
Deal found 1/14$265
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/136:30 am
TYS
-
AUS
1 stop10h 34m
Multiple Airlines
Wed 2/188:30 am
AUS
-
TYS
2 stops36h 40m
Multiple Airlines
Deal found 1/14$268
This Kiwi.com deal was found by Cheapflights users on 1/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/136:30 am
TYS
-
AUS
1 stop10h 34m
Multiple Airlines
Mon 2/1610:16 am
AUS
-
TYS
1 stop8h 02m
Multiple Airlines
Deal found 1/14$270
This United Airlines deal was found by Cheapflights users on 1/12. 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.
Thu 2/127:05 am
TYS
-
AUS
1 stop5h 18m
United Airlines
Sat 2/1412:17 pm
AUS
-
TYS
1 stop4h 53m
United Airlines
Deal found 1/12$271
This Kiwi.com deal was found by Cheapflights users on 1/13. 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.
Wed 1/214:47 pm
TYS
-
AUS
1 stop29h 48m
Multiple Airlines
Wed 1/287:25 am
AUS
-
TYS
1 stop24h 14m
Multiple Airlines
Deal found 1/13$273

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 January 14, 2026.
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

Mon 3/2

8:13 pm-11:13 pm

1 stop28h 00m

Austin Bergstrom

Thu 3/5

10:06 am-3:25 pm

1 stop28h 19m

$188

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Tue 2/3

1:00 pm-4:04 pm

1 stop28h 04m

Austin Bergstrom

Thu 2/12

4:35 pm-11:38 pm

2 stops30h 03m

$257

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Thu 2/12

7:00 am-8:53 pm

1 stop14h 53m

Austin Bergstrom

Mon 2/16

6:45 am-7:18 pm

1 stop11h 33m

$265

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Fri 2/13

6:30 am-4:04 pm

1 stop10h 34m

Austin Bergstrom

Wed 2/18

8:30 am-10:10 pm

2 stops36h 40m

$268

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Thu 2/12

7:05 am-11:23 am

1 stop5h 18m

Austin Bergstrom

Sat 2/14

12:17 pm-6:10 pm

1 stop4h 53m

$271

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Wed 1/21

4:47 pm-5:02 pm

2 stops25h 15m

Austin Bergstrom

Wed 1/28

7:25 am-8:39 am

1 stop24h 14m

$274

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Sat 3/14

3:23 pm-11:32 pm

1 stop9h 09m

Austin Bergstrom

Tue 3/24

6:18 pm-12:51 pm

1 stop17h 33m

$290

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Mon 3/16

2:06 pm-10:08 pm

1 stop9h 02m

Austin Bergstrom

Fri 3/20

12:08 pm-9:50 am

1 stop20h 42m

$299

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Sat 3/14

6:35 am-10:05 am

1 stop4h 30m

Austin Bergstrom

Tue 3/24

8:55 am-8:05 pm

2 stops10h 10m

$307

KnoxvilleAustin

TYS - AUS

TYSAUS

Knoxville McGhee Tyson

Thu 2/12

9:32 pm-8:53 pm

1 stop24h 21m

$127

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Showing 1-10 of 19 results
1
2

Compare providers for flights from Knoxville to Austin

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Austin in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Knoxville-Austin flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Knoxville-Austin flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Knoxville-Austin flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Knoxville-Austin flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Austin flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 January 9, 2026.

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, May is the cheapest month in which you can book a flight from Knoxville to Austin (average of $86). Flying from Knoxville to Austin in January is currently the most expensive (average of $128). 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 January 14, 2026.

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 58% on airfare.

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 January 14, 2026.
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
7.9
Good
8,048 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,048 reviews
Delta
7.9
Good
8,048 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,163 reviews
Delta
7.9
Good
8,048 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
American Airlines
7.2
Good
11,129 reviews
Delta
7.9
Good
8,048 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Allegiant Air
7.2
Good
702 reviews
Delta
7.9
Good
8,048 reviews

Boarding

8.1

Overall

7.9

Crew

8.5

Entertainment

7.8

Comfort

7.9

Food

7.2

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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 28h. Knoxville and Austin are separated by a distance of 881 mi.

  • 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 United Airlines, with the lowest prices starting at $129 and $233, respectively. Allegiant Air is 70% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Knoxville to Austin one-way?

    For one-way options, check prices for Allegiant Air. According to our data, you can fly for as low as $46. Users have also found prices from $99 and $118 on American Airlines and Delta, respectively.

  • What are the cheapest flights from Knoxville to Austin?

    The cheapest flight price from Knoxville to Austin is $126. On average you can expect to pay $152. The most popular route, (Knoxville McGhee Tyson - Austin Bergstrom), can usually be booked for $144.

  • 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, May is the cheapest month in which you can book a flight from Knoxville to Austin (average of $86). Flying from Knoxville to Austin in January is currently the most expensive (average of $128). 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
Cedar Park
Fredericksburg
Round Rock
San Marcos
Georgetown
Pflugerville
Dripping Springs
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 January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Allegiant AirCheapest$88Average$145FlexibilityNo cancel feeOn-time88%
DeltaCheapest$214Average$330FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$233Average$323FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$248Average$358FlexibilityNo cancel feeOn-time71%

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