American Airlines flights from Saint Louis to Knoxville

Recent searches for flights from Saint Louis to Knoxville

Aug 2026
From$521*
Updated: 7 hours ago
Round tripIEconomy
Sep 2026
From$243*
Updated: 20 hours ago
Round tripIEconomy
Oct 2026
From$243*
Updated: 7 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $243
cmp-daily-histogram-bars-legend-max-price-aria-label $653
Displaying fares for August-2026
  • STL–TYS, 08/23/26 – 08/30/26: From $643
    23

    Su

    AUG

  • STL–TYS, 08/24/26 – 08/31/26: From $643
    24

    Mo

  • STL–TYS, 08/25/26 – 09/01/26: From $521
    25

    Tu

  • STL–TYS, 08/26/26 – 09/02/26: From $521
    26

    We

  • STL–TYS, 08/27/26 – 09/03/26: From $643
    27

    Th

  • STL–TYS, 08/28/26 – 09/04/26: From $643
    28

    Fr

  • STL–TYS, 08/29/26 – 09/05/26: From $521
    29

    Sa

  • STL–TYS, 08/30/26 – 09/06/26: From $577
    30

    Su

  • STL–TYS, 08/31/26 – 09/07/26: From $577
    31

    Mo

  • STL–TYS, 09/01/26 – 09/08/26: From $484
    01

    Tu

    SEP

  • STL–TYS, 09/02/26 – 09/09/26: From $484
    02

    We

  • STL–TYS, 09/03/26 – 09/10/26: From $577
    03

    Th

  • STL–TYS, 09/04/26 – 09/07/26: From $653
    04

    Fr

  • STL–TYS, 09/05/26 – 09/12/26: From $387
    05

    Sa

  • STL–TYS, 09/06/26 – 09/13/26: From $357
    06

    Su

  • STL–TYS, 09/07/26 – 09/14/26: From $345
    07

    Mo

  • STL–TYS, 09/08/26 – 09/15/26: From $345
    08

    Tu

  • STL–TYS, 09/09/26 – 09/16/26: From $285
    09

    We

  • STL–TYS, 09/10/26 – 09/17/26: From $285
    10

    Th

  • STL–TYS, 09/11/26 – 09/18/26: From $298
    11

    Fr

  • STL–TYS, 09/12/26 – 09/19/26: From $285
    12

    Sa

  • STL–TYS, 09/13/26 – 09/20/26: From $463
    13

    Su

  • STL–TYS, 09/14/26 – 09/21/26: From $243
    14

    Mo

  • STL–TYS, 09/15/26 – 09/22/26: From $243
    15

    Tu

  • STL–TYS, 09/16/26 – 09/23/26: From $243
    16

    We

  • STL–TYS, 09/17/26 – 09/24/26: From $391
    17

    Th

  • STL–TYS, 09/18/26 – 09/25/26: From $404
    18

    Fr

  • STL–TYS, 09/19/26 – 09/26/26: From $243
    19

    Sa

  • STL–TYS: cmp-view-offers-disclaimer. Find Offers
    20

    Su

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

    Mo

  • STL–TYS, 09/22/26 – 09/29/26: From $243
    22

    Tu

    • range$243-$653

    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 Knoxville flights

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    Saint Louis (STL)to

    Knoxville (TYS)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Knoxville (TYS)
    10/27/26 - 11/03/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Knoxville (TYS)
    10/03/26 - 10/10/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Knoxville (TYS)
    09/29/26 - 10/06/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Knoxville (TYS)
    09/15/26 - 09/22/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Knoxville (TYS)
    11/02/26 - 11/09/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Knoxville (TYS)
    11/03/26 - 11/10/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 7 hours ago

    Saint Louis (STL)to

    Knoxville (TYS)
    11/09/26 - 11/16/26

    Round trip

    Economy

    from
    $243Fare 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 Knoxville

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