American Airlines flights from Buffalo to Saint Louis

Recent searches for flights from Buffalo to Saint Louis

Aug 2026
From$322*
Updated: 2 hours ago
Round tripIEconomy
Sep 2026
From$322*
Updated: 2 hours ago
Round tripIEconomy
Oct 2026
From$335*
Updated: 2 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $322
cmp-daily-histogram-bars-legend-max-price-aria-label $657
Displaying fares for August-2026
  • BUF–STL: cmp-view-offers-disclaimer. Find Offers
    04

    Tu

    AUG

  • BUF–STL, 08/05/26 – 08/12/26: From $533
    05

    We

  • BUF–STL, 08/06/26 – 08/13/26: From $657
    06

    Th

  • BUF–STL, 08/07/26 – 08/14/26: From $657
    07

    Fr

  • BUF–STL, 08/08/26 – 08/15/26: From $533
    08

    Sa

  • BUF–STL, 08/09/26 – 08/16/26: From $657
    09

    Su

  • BUF–STL, 08/10/26 – 08/17/26: From $657
    10

    Mo

  • BUF–STL, 08/11/26 – 08/18/26: From $505
    11

    Tu

  • BUF–STL, 08/12/26 – 08/19/26: From $505
    12

    We

  • BUF–STL, 08/13/26 – 08/20/26: From $607
    13

    Th

  • BUF–STL, 08/14/26 – 08/21/26: From $607
    14

    Fr

  • BUF–STL, 08/15/26 – 08/22/26: From $505
    15

    Sa

  • BUF–STL, 08/16/26 – 08/23/26: From $607
    16

    Su

  • BUF–STL, 08/17/26 – 08/24/26: From $607
    17

    Mo

  • BUF–STL, 08/18/26 – 08/25/26: From $357
    18

    Tu

  • BUF–STL, 08/19/26 – 08/26/26: From $357
    19

    We

  • BUF–STL, 08/20/26 – 08/27/26: From $406
    20

    Th

  • BUF–STL, 08/21/26 – 08/28/26: From $422
    21

    Fr

  • BUF–STL, 08/22/26 – 08/29/26: From $357
    22

    Sa

  • BUF–STL, 08/23/26 – 08/30/26: From $447
    23

    Su

  • BUF–STL, 08/24/26 – 08/31/26: From $406
    24

    Mo

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

    Tu

  • BUF–STL, 08/26/26 – 09/02/26: From $335
    26

    We

  • BUF–STL, 08/27/26 – 09/03/26: From $335
    27

    Th

  • BUF–STL, 08/28/26 – 09/04/26: From $391
    28

    Fr

  • BUF–STL, 08/29/26 – 09/05/26: From $322
    29

    Sa

  • BUF–STL, 08/30/26 – 09/06/26: From $363
    30

    Su

  • BUF–STL, 08/31/26 – 09/07/26: From $335
    31

    Mo

  • BUF–STL: cmp-view-offers-disclaimer. Find Offers
    01

    Tu

    SEP

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

    We

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

    Th

    • range$322-$657

    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 Buffalo to Saint Louis flights

    $
    keyboard_arrow_down

    Buffalo (BUF)to

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

    Round trip

    Economy

    from
    $322Fare subject to changes
    Updated: 2 hours ago

    Buffalo (BUF)to

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

    Round trip

    Economy

    from
    $322Fare subject to changes
    Updated: 2 hours ago

    Buffalo (BUF)to

    Saint Louis (STL)
    10/29/26 - 11/05/26

    Round trip

    Economy

    from
    $335Fare subject to changes
    Updated: 2 hours ago

    Buffalo (BUF)to

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

    Round trip

    Economy

    from
    $335Fare subject to changes
    Updated: 2 hours ago

    Buffalo (BUF)to

    Saint Louis (STL)
    10/14/26 - 10/21/26

    Round trip

    Economy

    from
    $335Fare subject to changes
    Updated: 2 hours ago

    Buffalo (BUF)to

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

    Round trip

    Economy

    from
    $335Fare subject to changes
    Updated: 2 hours ago

    Buffalo (BUF)to

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

    Round trip

    Economy

    from
    $335Fare subject to changes
    Updated: 2 hours ago

    Buffalo (BUF)to

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

    Round trip

    Economy

    from
    $335Fare 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 Buffalo to Saint Louis

    Looking for lower fares on your trip from Buffalo 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 Buffalo to Saint Louis