Southwest® flights from St. Louis to Austin from $102

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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
$102
Seen: 14 hrs ago

St. Louis (STL)to

Austin (AUS)
Depart: 12/09/2026

One-way

Basic

From
$102
Seen: 13 hrs ago

St. Louis (STL)to

Austin (AUS)
Depart: 12/15/2026

One-way

Basic

From
$102
Seen: 13 hrs ago

St. Louis (STL)to

Austin (AUS)
Depart: 01/27/2027

One-way

Basic

From
$102
Seen: 20 hrs ago

St. Louis (STL)to

Austin (AUS)
Depart: 12/01/2026

One-way

Basic

From
$102
Seen: 8 hrs ago

St. Louis (STL)to

Austin (AUS)
Depart: 12/23/2026

One-way

Basic

From
$102
Seen: 14 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

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Explore flights from St. Louis to Austin

Oct 2026
From$300*
Seen: 11 hrs ago
One Way/Basic
Nov 2026
From$102*
Seen: 18 hrs ago
One Way/Basic
Dec 2026
From$102*
Seen: 11 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $102
cmp-daily-histogram-bars-legend-max-price-aria-label $429
Displaying fares for October-2026
  • STL–AUS: cmp-view-offers-disclaimer. Find Offers
    20

    Tue

    OCT

  • STL–AUS, 10/21/2026: From $429
    21

    Wed

  • STL–AUS, 10/22/2026: From $429
    22

    Thu

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

    Fri

  • STL–AUS, 10/24/2026: From $424
    24

    Sat

  • STL–AUS: cmp-view-offers-disclaimer. Find Offers
    25

    Sun

  • STL–AUS, 10/26/2026: From $429
    26

    Mon

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

    Tue

  • STL–AUS, 10/28/2026: From $305
    28

    Wed

  • STL–AUS, 10/29/2026: From $300
    29

    Thu

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

    Fri

  • STL–AUS, 10/31/2026: From $305
    31

    Sat

  • STL–AUS, 11/01/2026: From $305
    01

    Sun

    NOV

  • STL–AUS, 11/02/2026: From $204
    02

    Mon

  • STL–AUS, 11/03/2026: From $204
    03

    Tue

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

    Wed

  • STL–AUS, 11/05/2026: From $204
    05

    Thu

  • STL–AUS, 11/06/2026: From $204
    06

    Fri

  • STL–AUS, 11/07/2026: From $204
    07

    Sat

  • STL–AUS, 11/08/2026: From $204
    08

    Sun

  • STL–AUS, 11/09/2026: From $108
    09

    Mon

  • STL–AUS, 11/10/2026: From $108
    10

    Tue

  • STL–AUS, 11/11/2026: From $108
    11

    Wed

  • STL–AUS, 11/12/2026: From $108
    12

    Thu

  • STL–AUS, 11/13/2026: From $114
    13

    Fri

  • STL–AUS: cmp-view-offers-disclaimer. Find Offers
    14

    Sat

  • STL–AUS, 11/15/2026: From $114
    15

    Sun

  • STL–AUS, 11/16/2026: From $108
    16

    Mon

  • STL–AUS, 11/17/2026: From $108
    17

    Tue

  • STL–AUS, 11/18/2026: From $102
    18

    Wed

  • STL–AUS, 11/19/2026: From $108
    19

    Thu

    • Range$102-$429

    *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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