American Airlines flights from Houston to Saint Louis

Recent searches for flights from Houston to Saint Louis

Aug 2026
From$256*
Updated: 2 hours ago
Round tripIEconomy
Sep 2026
From$256*
Updated: 22 hours ago
Round tripIEconomy
Oct 2026
From$275*
Updated: 2 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $256
cmp-daily-histogram-bars-legend-max-price-aria-label $899
Displaying fares for August-2026
  • IAH–STL, 08/06/26 – 08/13/26: From $671
    06

    Th

    AUG

  • IAH–STL, 08/07/26 – 08/14/26: From $899
    07

    Fr

  • IAH–STL, 08/08/26 – 08/15/26: From $853
    08

    Sa

  • IAH–STL, 08/09/26 – 08/16/26: From $899
    09

    Su

  • IAH–STL, 08/10/26 – 08/17/26: From $899
    10

    Mo

  • IAH–STL, 08/11/26 – 08/18/26: From $899
    11

    Tu

  • IAH–STL, 08/12/26 – 08/19/26: From $899
    12

    We

  • IAH–STL, 08/13/26 – 08/20/26: From $674
    13

    Th

  • IAH–STL, 08/14/26 – 08/21/26: From $674
    14

    Fr

  • IAH–STL, 08/15/26 – 08/22/26: From $674
    15

    Sa

  • IAH–STL, 08/16/26 – 08/23/26: From $674
    16

    Su

  • IAH–STL, 08/17/26 – 08/24/26: From $674
    17

    Mo

  • IAH–STL, 08/18/26 – 08/25/26: From $674
    18

    Tu

  • IAH–STL, 08/19/26 – 08/23/26: From $513
    19

    We

  • IAH–STL, 08/20/26 – 08/27/26: From $394
    20

    Th

  • IAH–STL, 08/21/26 – 08/28/26: From $437
    21

    Fr

  • IAH–STL, 08/22/26 – 08/29/26: From $394
    22

    Sa

  • IAH–STL, 08/23/26 – 08/30/26: From $490
    23

    Su

  • IAH–STL, 08/24/26 – 08/31/26: From $394
    24

    Mo

  • IAH–STL, 08/25/26 – 09/01/26: From $394
    25

    Tu

  • IAH–STL, 08/26/26 – 09/02/26: From $394
    26

    We

  • IAH–STL, 08/27/26 – 09/03/26: From $275
    27

    Th

  • IAH–STL, 08/28/26 – 09/04/26: From $361
    28

    Fr

  • IAH–STL, 08/29/26 – 09/05/26: From $256
    29

    Sa

  • IAH–STL, 08/30/26 – 09/06/26: From $352
    30

    Su

  • IAH–STL, 08/31/26 – 09/07/26: From $275
    31

    Mo

  • IAH–STL, 09/01/26 – 09/08/26: From $275
    01

    Tu

    SEP

  • IAH–STL, 09/02/26 – 09/09/26: From $275
    02

    We

  • IAH–STL: cmp-view-offers-disclaimer. Find Offers
    03

    Th

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

    Fr

  • IAH–STL, 09/05/26 – 09/12/26: From $256
    05

    Sa

    • range$256-$899

    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 Houston to Saint Louis flights

    $
    keyboard_arrow_down

    Houston (IAH)to

    Saint Louis (STL)
    09/05/26 - 09/12/26

    Round trip

    Economy

    from
    $256Fare subject to changes
    Updated: 22 hours ago

    Houston (IAH)to

    Saint Louis (STL)
    08/29/26 - 09/05/26

    Round trip

    Economy

    from
    $256Fare subject to changes
    Updated: 2 hours ago

    Houston (IAH)to

    Saint Louis (STL)
    10/13/26 - 10/20/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 2 hours ago

    Houston (IAH)to

    Saint Louis (STL)
    10/19/26 - 10/26/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 2 hours ago

    Houston (IAH)to

    Saint Louis (STL)
    10/20/26 - 10/27/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 2 hours ago

    Houston (IAH)to

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

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 2 hours ago

    Houston (IAH)to

    Saint Louis (STL)
    09/19/26 - 09/26/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 2 hours ago

    Houston (IAH)to

    Saint Louis (STL)
    09/23/26 - 09/30/26

    Round trip

    Economy

    from
    $275Fare subject to changes
    Updated: 2 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 Houston to Saint Louis

    Looking for lower fares on your trip from Houston to Saint Louis? 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 Houston to Saint Louis