American Airlines flights from Austin to Saint Louis

Recent searches for flights from Austin to Saint Louis

Sep 2026
From$293*
Updated: 7 hours ago
Round tripIEconomy
Oct 2026
From$199*
Updated: 7 hours ago
Round tripIEconomy
Nov 2026
From$199*
Updated: 7 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $199
cmp-daily-histogram-bars-legend-max-price-aria-label $453
Displaying fares for September-2026
  • AUS–STL: cmp-view-offers-disclaimer. Find Offers
    15

    Tu

    SEP

  • AUS–STL, 09/16/26 – 09/23/26: From $393
    16

    We

  • AUS–STL, 09/17/26 – 09/24/26: From $453
    17

    Th

  • AUS–STL, 09/18/26 – 09/29/26: From $423
    18

    Fr

  • AUS–STL, 09/19/26 – 09/26/26: From $393
    19

    Sa

  • AUS–STL, 09/20/26 – 09/27/26: From $453
    20

    Su

  • AUS–STL, 09/21/26 – 09/28/26: From $453
    21

    Mo

  • AUS–STL, 09/22/26 – 09/29/26: From $393
    22

    Tu

  • AUS–STL, 09/23/26 – 09/30/26: From $393
    23

    We

  • AUS–STL, 09/24/26 – 10/01/26: From $438
    24

    Th

  • AUS–STL, 09/25/26 – 10/02/26: From $438
    25

    Fr

  • AUS–STL, 09/26/26 – 10/03/26: From $393
    26

    Sa

  • AUS–STL, 09/27/26 – 10/02/26: From $418
    27

    Su

  • AUS–STL, 09/28/26 – 10/05/26: From $356
    28

    Mo

  • AUS–STL, 09/29/26 – 10/06/26: From $293
    29

    Tu

  • AUS–STL, 09/30/26 – 10/07/26: From $293
    30

    We

  • AUS–STL, 10/01/26 – 10/08/26: From $305
    01

    Th

    OCT

  • AUS–STL, 10/02/26 – 10/09/26: From $353
    02

    Fr

  • AUS–STL, 10/03/26 – 10/10/26: From $293
    03

    Sa

  • AUS–STL, 10/04/26 – 10/11/26: From $353
    04

    Su

  • AUS–STL, 10/05/26 – 10/08/26: From $254
    05

    Mo

  • AUS–STL, 10/06/26 – 10/13/26: From $199
    06

    Tu

  • AUS–STL, 10/07/26 – 10/14/26: From $199
    07

    We

  • AUS–STL, 10/08/26 – 10/15/26: From $356
    08

    Th

  • AUS–STL, 10/09/26 – 10/16/26: From $328
    09

    Fr

  • AUS–STL, 10/10/26 – 10/17/26: From $199
    10

    Sa

  • AUS–STL, 10/11/26 – 10/18/26: From $319
    11

    Su

  • AUS–STL, 10/12/26 – 10/19/26: From $254
    12

    Mo

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

    Tu

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

    We

    • range$199-$453

    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 Austin to Saint Louis flights

    $
    keyboard_arrow_down

    Austin (AUS)to

    Saint Louis (STL)
    10/17/26 - 10/24/26

    Round trip

    Economy

    from
    $199Fare subject to changes
    Updated: 7 hours ago

    Austin (AUS)to

    Saint Louis (STL)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $199Fare subject to changes
    Updated: 7 hours ago

    Austin (AUS)to

    Saint Louis (STL)
    10/27/26 - 11/03/26

    Round trip

    Economy

    from
    $199Fare subject to changes
    Updated: 7 hours ago

    Austin (AUS)to

    Saint Louis (STL)
    10/31/26 - 11/07/26

    Round trip

    Economy

    from
    $199Fare subject to changes
    Updated: 7 hours ago

    Austin (AUS)to

    Saint Louis (STL)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $199Fare subject to changes
    Updated: 7 hours ago

    Austin (AUS)to

    Saint Louis (STL)
    10/10/26 - 10/17/26

    Round trip

    Economy

    from
    $199Fare subject to changes
    Updated: 7 hours ago

    Austin (AUS)to

    Saint Louis (STL)
    12/02/26 - 12/09/26

    Round trip

    Economy

    from
    $199Fare subject to changes
    Updated: 7 hours ago

    Austin (AUS)to

    Saint Louis (STL)
    12/09/26 - 12/16/26

    Round trip

    Economy

    from
    $199Fare 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.

    Citi / AAdvantage credit card offer.