American Airlines flights from Saint Louis to Austin

Recent searches for flights from Saint Louis to Austin

Aug 2026
From$269*
Updated: 3 hours ago
Round tripIEconomy
Sep 2026
From$187*
Updated: 7 hours ago
Round tripIEconomy
Oct 2026
From$187*
Updated: 7 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $187
cmp-daily-histogram-bars-legend-max-price-aria-label $351
Displaying fares for August-2026
  • STL–AUS, 08/12/26 – 08/19/26: From $351
    12

    We

    AUG

  • STL–AUS, 08/13/26 – 08/20/26: From $351
    13

    Th

  • STL–AUS, 08/14/26 – 08/21/26: From $351
    14

    Fr

  • STL–AUS, 08/15/26 – 08/22/26: From $351
    15

    Sa

  • STL–AUS, 08/16/26 – 08/23/26: From $351
    16

    Su

  • STL–AUS, 08/17/26 – 08/24/26: From $351
    17

    Mo

  • STL–AUS, 08/18/26 – 08/25/26: From $351
    18

    Tu

  • STL–AUS, 08/19/26 – 08/26/26: From $351
    19

    We

  • STL–AUS, 08/20/26 – 08/27/26: From $351
    20

    Th

  • STL–AUS, 08/21/26 – 08/28/26: From $351
    21

    Fr

  • STL–AUS, 08/22/26 – 08/29/26: From $351
    22

    Sa

  • STL–AUS, 08/23/26 – 08/30/26: From $351
    23

    Su

  • STL–AUS, 08/24/26 – 08/31/26: From $335
    24

    Mo

  • STL–AUS, 08/25/26 – 09/01/26: From $335
    25

    Tu

  • STL–AUS, 08/26/26 – 09/02/26: From $277
    26

    We

  • STL–AUS, 08/27/26 – 09/03/26: From $277
    27

    Th

  • STL–AUS, 08/28/26 – 08/30/26: From $351
    28

    Fr

  • STL–AUS, 08/29/26 – 09/05/26: From $277
    29

    Sa

  • STL–AUS, 08/30/26 – 09/06/26: From $302
    30

    Su

  • STL–AUS, 08/31/26 – 09/07/26: From $269
    31

    Mo

  • STL–AUS, 09/01/26 – 09/08/26: From $213
    01

    Tu

    SEP

  • STL–AUS, 09/02/26 – 09/09/26: From $187
    02

    We

  • STL–AUS, 09/03/26 – 09/10/26: From $187
    03

    Th

  • STL–AUS, 09/04/26 – 09/11/26: From $266
    04

    Fr

  • STL–AUS, 09/05/26 – 09/12/26: From $187
    05

    Sa

  • STL–AUS, 09/06/26 – 09/13/26: From $268
    06

    Su

  • STL–AUS, 09/07/26 – 09/14/26: From $243
    07

    Mo

  • STL–AUS, 09/08/26 – 09/15/26: From $187
    08

    Tu

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

    We

  • STL–AUS: cmp-view-offers-disclaimer. Find Offers
    10

    Th

  • STL–AUS, 09/11/26 – 09/18/26: From $233
    11

    Fr

    • range$187-$351

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

    Find deals on Saint Louis to Austin flights

    $
    keyboard_arrow_down

    Saint Louis (STL)to

    Austin (AUS)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $187Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Austin (AUS)
    10/07/26 - 10/14/26

    Round trip

    Economy

    from
    $187Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Austin (AUS)
    10/17/26 - 10/24/26

    Round trip

    Economy

    from
    $187Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Austin (AUS)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $187Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Austin (AUS)
    09/05/26 - 09/12/26

    Round trip

    Economy

    from
    $187Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Austin (AUS)
    09/15/26 - 09/22/26

    Round trip

    Economy

    from
    $187Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Austin (AUS)
    09/16/26 - 09/23/26

    Round trip

    Economy

    from
    $187Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Austin (AUS)
    09/19/26 - 09/26/26

    Round trip

    Economy

    from
    $187Fare subject to changes
    Updated: 7 hours ago

    *Fares displayed have been collected within the last 24hrs and may no longer be available at time of booking. Some fares listed may include one or more connections that are Basic Economy, which class is subject to additional terms and conditions. Modifying this information may result in a different fare. To find the most updated fare, please visit aa.com. Additional baggage fees and charges for optional products and services may apply.

    Finding cheap flights from Saint Louis to Austin

    Looking for lower fares on your trip from Saint Louis to Austin? Here are a few ways to save.

    • Book early: Booking 1 to 3 months ahead can help you find lower fares
    • Be flexible with dates: Midweek travel, like Tuesdays and Wednesdays, can be more affordable
    • Travel during less busy periods: Flying outside peak travel times can help find lower fares and avoid crowds

    Earn up to $500 back on your next American Airlines flight plus, 30,000 bonus miles. Offers vary elsewhere. Opens another site in a new window that may not meet accessibility guidelines.

    Upgrade your flight with Main Cabin Extra

    Make your trip more comfortable with Main Cabin Extra. Enjoy benefits like:

    • Extra legroom: More space with seats at the front of the Main Cabin or in exit rows.
    • Early boarding: Preferred Group 5 boarding allows easier access to overhead bins.
    • Complimentary drinks: Enjoy beer, wine and spirits on flights with full beverage service.

    Discover how Main Cabin Extra can enhance your trip.

    American Airlines flights from Saint Louis to Austin