Southwest® flights from Knoxville to Austin from $115

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Low fares from Knoxville to Austin

$

Knoxville (TYS)to

Austin (AUS)
Depart: 09/10/2026

One-way

Basic

From
$115

Low fares from Knoxville to Austin

$

Knoxville (TYS)to

Austin (AUS)
Depart: 09/10/2026

One-way

Basic

From
$115
Seen: 20 hrs ago

Knoxville (TYS)to

Austin (AUS)
Depart: 11/03/2026

One-way

Basic

From
$115
Seen: 22 hrs ago

Knoxville (TYS)to

Austin (AUS)
Depart: 10/07/2026

One-way

Basic

From
$115
Seen: 9 hrs ago

Knoxville (TYS)to

Austin (AUS)
Depart: 09/22/2026

One-way

Basic

From
$115
Seen: 3 hrs ago

Knoxville (TYS)to

Austin (AUS)
Depart: 10/06/2026

One-way

Basic

From
$115
Seen: 13 hrs ago

Knoxville (TYS)to

Austin (AUS)
Depart: 10/31/2026

One-way

Basic

From
$115
Seen: 17 hrs ago

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Explore flights from Knoxville to Austin

Aug 2026
From$244*
Seen: 16 hrs ago
One Way/Basic
Sep 2026
From$115*
Seen: 20 hrs ago
One Way/Basic
Oct 2026
From$115*
Seen: 17 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $115
cmp-daily-histogram-bars-legend-max-price-aria-label $392
Displaying fares for August-2026
  • TYS–AUS, 08/12/2026: From $364
    12

    Wed

    AUG

  • TYS–AUS, 08/13/2026: From $364
    13

    Thu

  • TYS–AUS, 08/14/2026: From $364
    14

    Fri

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    15

    Sat

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    16

    Sun

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    17

    Mon

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    18

    Tue

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    19

    Wed

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    20

    Thu

  • TYS–AUS, 08/21/2026: From $349
    21

    Fri

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    22

    Sat

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    23

    Sun

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    24

    Mon

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    25

    Tue

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    26

    Wed

  • TYS–AUS: cmp-view-offers-disclaimer. Find Offers
    27

    Thu

  • TYS–AUS, 08/28/2026: From $244
    28

    Fri

  • TYS–AUS: cmp-view-offers-disclaimer. Find Offers
    29

    Sat

  • TYS–AUS: cmp-view-offers-disclaimer. Find Offers
    30

    Sun

  • TYS–AUS: cmp-view-offers-disclaimer. Find Offers
    31

    Mon

  • TYS–AUS, 09/01/2026: From $138
    01

    Tue

    SEP

  • TYS–AUS, 09/02/2026: From $138
    02

    Wed

  • TYS–AUS, 09/03/2026: From $214
    03

    Thu

  • TYS–AUS, 09/04/2026: From $214
    04

    Fri

  • TYS–AUS, 09/05/2026: From $121
    05

    Sat

  • TYS–AUS, 09/06/2026: From $244
    06

    Sun

  • TYS–AUS, 09/07/2026: From $392
    07

    Mon

  • TYS–AUS, 09/08/2026: From $214
    08

    Tue

  • TYS–AUS: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

  • TYS–AUS, 09/10/2026: From $115
    10

    Thu

  • TYS–AUS, 09/11/2026: From $121
    11

    Fri

    • Range$115-$392

    *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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