Southwest® flights from St. Louis to Austin from $127

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Low fares from St. Louis to Austin

$

St. Louis (STL)to

Austin (AUS)
Depart: 12/22/2026

One-way

Basic

From
$127
Seen: 20 hrs ago

St. Louis (STL)to

Austin (AUS)
Depart: 01/05/2027

One-way

Basic

From
$127
Seen: 17 hrs ago

St. Louis (STL)to

Austin (AUS)
Depart: 12/19/2026

One-way

Basic

From
$127
Seen: 15 hrs ago

St. Louis (STL)to

Austin (AUS)
Depart: 12/15/2026

One-way

Basic

From
$127
Seen: 15 hrs ago

St. Louis (STL)to

Austin (AUS)
Depart: 01/27/2027

One-way

Basic

From
$127
Seen: 13 hrs ago

St. Louis (STL)to

Austin (AUS)
Depart: 01/26/2027

One-way

Basic

From
$127
Seen: 12 hrs ago

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Explore flights from St. Louis to Austin

Nov 2026
From$209*
Seen: 19 hrs ago
One Way/Basic
Dec 2026
From$127*
Seen: 17 hrs ago
One Way/Basic
Jan 2027
From$127*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $127
cmp-daily-histogram-bars-legend-max-price-aria-label $434
Displaying fares for November-2026
  • STL–AUS, 11/10/2026: From $434
    10

    Tue

    NOV

  • STL–AUS, 11/11/2026: From $434
    11

    Wed

  • STL–AUS, 11/12/2026: From $434
    12

    Thu

  • STL–AUS, 11/13/2026: From $434
    13

    Fri

  • STL–AUS, 11/14/2026: From $434
    14

    Sat

  • STL–AUS, 11/15/2026: From $434
    15

    Sun

  • STL–AUS, 11/16/2026: From $310
    16

    Mon

  • STL–AUS, 11/17/2026: From $310
    17

    Tue

  • STL–AUS, 11/18/2026: From $310
    18

    Wed

  • STL–AUS, 11/19/2026: From $310
    19

    Thu

  • STL–AUS, 11/20/2026: From $310
    20

    Fri

  • STL–AUS, 11/21/2026: From $310
    21

    Sat

  • STL–AUS, 11/22/2026: From $310
    22

    Sun

  • STL–AUS: cmp-view-offers-disclaimer. Find Offers
    23

    Mon

  • STL–AUS: cmp-view-offers-disclaimer. Find Offers
    24

    Tue

  • STL–AUS, 11/25/2026: From $209
    25

    Wed

  • STL–AUS, 11/26/2026: From $209
    26

    Thu

  • STL–AUS, 11/27/2026: From $209
    27

    Fri

  • STL–AUS: cmp-view-offers-disclaimer. Find Offers
    28

    Sat

  • STL–AUS, 11/29/2026: From $340
    29

    Sun

  • STL–AUS, 11/30/2026: From $239
    30

    Mon

  • STL–AUS, 12/01/2026: From $162
    01

    Tue

    DEC

  • STL–AUS, 12/02/2026: From $127
    02

    Wed

  • STL–AUS, 12/03/2026: From $142
    03

    Thu

  • STL–AUS: cmp-view-offers-disclaimer. Find Offers
    04

    Fri

  • STL–AUS: cmp-view-offers-disclaimer. Find Offers
    05

    Sat

  • STL–AUS: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • STL–AUS, 12/07/2026: From $142
    07

    Mon

  • STL–AUS, 12/08/2026: From $127
    08

    Tue

  • STL–AUS, 12/09/2026: From $127
    09

    Wed

    • Range$127-$434

    *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:
    Lambert-St Louis Int'l Airport
    Arriving at:
    Austin-Bergstrom International Airport
    Average flight time:
    2 hours 4 minutes
    Distance:
    721 miles

    Questions we hear the most

    The average flight time from St. Louis to Austin is 2 hours 4 minutes.
    There are 156 weekly flights from St. Louis to Austin on Southwest Airlines.
    Yes, Southwest flies nonstop from St. Louis to Austin 2 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from St. Louis to Austin once per day on Saturdays and 3 times per day on Sundays.
    To find the lowest fares by day and time to fly St. Louis 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 St. Louis 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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