Southwest® flights from Knoxville to Austin from $152

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Low fares from Knoxville to Austin

$

Knoxville (TYS)to

Austin (AUS)
Depart: 09/22/2026

One-way

Basic

From
$152

Low fares from Knoxville to Austin

$

Knoxville (TYS)to

Austin (AUS)
Depart: 10/07/2026

One-way

Basic

From
$152
Seen: 4 hrs ago

Knoxville (TYS)to

Austin (AUS)
Depart: 12/05/2026

One-way

Basic

From
$152
Seen: 1 hour ago

Knoxville (TYS)to

Austin (AUS)
Depart: 09/22/2026

One-way

Basic

From
$152
Seen: 3 hrs ago

Knoxville (TYS)to

Austin (AUS)
Depart: 10/05/2026

One-way

Basic

From
$152
Seen: 19 hrs ago

Knoxville (TYS)to

Austin (AUS)
Depart: 09/26/2026

One-way

Basic

From
$152
Seen: 14 hrs ago

Knoxville (TYS)to

Austin (AUS)
Depart: 12/10/2026

One-way

Basic

From
$152
Seen: 15 hrs ago

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Explore flights from Knoxville to Austin

Sep 2026
From$152*
Seen: 3 hrs ago
One Way/Basic
Oct 2026
From$152*
Seen: 19 hrs ago
One Way/Basic
Nov 2026
From$152*
Seen: 6 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $152
Displaying fares for September-2026
  • TYS–AUS: cmp-view-offers-disclaimer. Find Offers
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  • TYS–AUS, 09/04/2026: From $364
    04

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    Tue

  • TYS–AUS, 09/09/2026: From $349
    09

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    10

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  • TYS–AUS, 09/11/2026: From $349
    11

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    12

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    13

    Sun

  • TYS–AUS, 09/14/2026: From $244
    14

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    15

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    17

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    18

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    19

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    20

    Sun

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    21

    Mon

  • TYS–AUS, 09/22/2026: From $152
    22

    Tue

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    23

    Wed

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    24

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  • TYS–AUS, 09/25/2026: From $153
    25

    Fri

  • TYS–AUS, 09/26/2026: From $152
    26

    Sat

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    27

    Sun

  • TYS–AUS, 09/28/2026: From $274
    28

    Mon

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    29

    Tue

  • TYS–AUS, 09/30/2026: From $152
    30

    Wed

    • Range$152-$364

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Mc Ghee Tyson Airport
    Arriving at:
    Austin-Bergstrom International Airport
    Distance:
    882 miles

    Route Information

    76† Weekly flights

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    There are 76 weekly flights from Knoxville to Austin on Southwest Airlines.
    To find the lowest fares by day and time to fly Knoxville to Austin with Southwest, check out our Low Fare Calendar.
    You can rent a car at Austin-Bergstrom International Airport book yours with your flight.
    Yes! Flights from Knoxville to Austin—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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