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

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Low fares from Austin to St. Louis

$

Austin (AUS)to

St. Louis (STL)
Depart: 12/09/2026

One-way

Basic

From
$102
Seen: 19 hrs ago

Austin (AUS)to

St. Louis (STL)
Depart: 12/30/2026

One-way

Basic

From
$102
Seen: 13 hrs ago

Austin (AUS)to

St. Louis (STL)
Depart: 01/05/2027

One-way

Basic

From
$102
Seen: 15 hrs ago

Austin (AUS)to

St. Louis (STL)
Depart: 12/01/2026

One-way

Basic

From
$102
Seen: 20 hrs ago

Austin (AUS)to

St. Louis (STL)
Depart: 01/06/2027

One-way

Basic

From
$102
Seen: 14 hrs ago

Austin (AUS)to

St. Louis (STL)
Depart: 12/08/2026

One-way

Basic

From
$102
Seen: 3 hrs ago

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Explore flights from Austin to St. Louis

Oct 2026
From$300*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$108*
Seen: 16 hrs ago
One Way/Basic
Dec 2026
From$102*
Seen: 20 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $108
cmp-daily-histogram-bars-legend-max-price-aria-label $429
Displaying fares for October-2026
  • AUS–STL, 10/22/2026: From $429
    22

    Thu

    OCT

  • AUS–STL, 10/23/2026: From $429
    23

    Fri

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

    Sat

  • AUS–STL, 10/25/2026: From $424
    25

    Sun

  • AUS–STL: cmp-view-offers-disclaimer. Find Offers
    26

    Mon

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

    Tue

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

    Wed

  • AUS–STL, 10/29/2026: From $305
    29

    Thu

  • AUS–STL, 10/30/2026: From $305
    30

    Fri

  • AUS–STL, 10/31/2026: From $300
    31

    Sat

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

    Sun

    NOV

  • AUS–STL: cmp-view-offers-disclaimer. Find Offers
    02

    Mon

  • AUS–STL, 11/03/2026: From $305
    03

    Tue

  • AUS–STL, 11/04/2026: From $204
    04

    Wed

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

    Thu

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

    Fri

  • AUS–STL: cmp-view-offers-disclaimer. Find Offers
    07

    Sat

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

    Sun

  • AUS–STL, 11/09/2026: From $124
    09

    Mon

  • AUS–STL, 11/10/2026: From $114
    10

    Tue

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

    Wed

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

    Thu

  • AUS–STL: cmp-view-offers-disclaimer. Find Offers
    13

    Fri

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

    Sat

  • AUS–STL: cmp-view-offers-disclaimer. Find Offers
    15

    Sun

  • AUS–STL: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

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

    Tue

  • AUS–STL, 11/18/2026: From $108
    18

    Wed

  • AUS–STL, 11/19/2026: From $112
    19

    Thu

  • AUS–STL, 11/20/2026: From $170
    20

    Fri

  • AUS–STL: cmp-view-offers-disclaimer. Find Offers
    21

    Sat

    • Range$108-$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:
    Austin-Bergstrom International Airport
    Arriving at:
    Lambert-St Louis Int'l Airport
    Average flight time:
    2 hours 5 minutes
    Distance:
    721 miles

    Questions we hear the most

    The average flight time from Austin to St. Louis is 2 hours 5 minutes.
    There are 156 weekly flights from Austin to St. Louis on Southwest Airlines.
    Yes, Southwest flies nonstop from Austin to St. Louis 2 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Austin to St. Louis once per day on Saturdays and 3 times per day on Sundays.
    To find the lowest fares by day and time to fly Austin to St. Louis with Southwest, check out our Low Fare Calendar.
    You can rent a car at Lambert-St Louis Int'l Airport book yours with your flight.
    Yes! Flights from Austin to St. Louis—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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