American Airlines flights from Saint Louis to Harrisburg

Recent searches for flights from Saint Louis to Harrisburg

Aug 2026
From$378*
Updated: 1 hour ago
Round tripIEconomy
Sep 2026
From$301*
Updated: 1 hour ago
Round tripIEconomy
Oct 2026
From$301*
Updated: 1 hour ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $310
cmp-daily-histogram-bars-legend-max-price-aria-label $424
Displaying fares for August-2026
  • STL–MDT, 08/22/26 – 08/29/26: From $407
    22

    Sa

    AUG

  • STL–MDT, 08/23/26 – 08/30/26: From $424
    23

    Su

  • STL–MDT, 08/24/26 – 08/31/26: From $424
    24

    Mo

  • STL–MDT, 08/25/26 – 09/01/26: From $407
    25

    Tu

  • STL–MDT, 08/26/26 – 09/02/26: From $407
    26

    We

  • STL–MDT, 08/27/26 – 09/03/26: From $424
    27

    Th

  • STL–MDT, 08/28/26 – 09/04/26: From $379
    28

    Fr

  • STL–MDT, 08/29/26 – 09/05/26: From $378
    29

    Sa

  • STL–MDT, 08/30/26 – 09/06/26: From $379
    30

    Su

  • STL–MDT, 08/31/26 – 09/07/26: From $379
    31

    Mo

  • STL–MDT, 09/01/26 – 09/08/26: From $378
    01

    Tu

    SEP

  • STL–MDT, 09/02/26 – 09/09/26: From $378
    02

    We

  • STL–MDT, 09/03/26 – 09/10/26: From $379
    03

    Th

  • STL–MDT, 09/04/26 – 09/07/26: From $404
    04

    Fr

  • STL–MDT, 09/05/26 – 09/12/26: From $310
    05

    Sa

  • STL–MDT, 09/06/26 – 09/13/26: From $310
    06

    Su

  • STL–MDT, 09/07/26 – 09/14/26: From $334
    07

    Mo

  • STL–MDT, 09/08/26 – 09/15/26: From $334
    08

    Tu

  • STL–MDT, 09/09/26 – 09/16/26: From $310
    09

    We

  • STL–MDT, 09/10/26 – 09/17/26: From $310
    10

    Th

  • STL–MDT, 09/11/26 – 09/18/26: From $310
    11

    Fr

  • STL–MDT, 09/12/26 – 09/19/26: From $310
    12

    Sa

  • STL–MDT, 09/13/26 – 09/20/26: From $389
    13

    Su

  • STL–MDT, 09/14/26 – 09/21/26: From $319
    14

    Mo

  • STL–MDT, 09/15/26 – 09/22/26: From $310
    15

    Tu

  • STL–MDT, 09/16/26 – 09/23/26: From $310
    16

    We

  • STL–MDT, 09/17/26 – 09/24/26: From $389
    17

    Th

  • STL–MDT, 09/18/26 – 09/25/26: From $319
    18

    Fr

  • STL–MDT: cmp-view-offers-disclaimer. Find Offers
    19

    Sa

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

    Su

  • STL–MDT, 09/21/26 – 09/28/26: From $352
    21

    Mo

    • range$310-$424

    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 Harrisburg flights

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    Saint Louis (STL)to

    Harrisburg (MDT)
    10/03/26 - 10/10/26

    Round trip

    Economy

    from
    $301Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Harrisburg (MDT)
    10/10/26 - 10/17/26

    Round trip

    Economy

    from
    $301Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Harrisburg (MDT)
    10/13/26 - 10/20/26

    Round trip

    Economy

    from
    $301Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Harrisburg (MDT)
    09/30/26 - 10/07/26

    Round trip

    Economy

    from
    $301Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Harrisburg (MDT)
    10/21/26 - 10/28/26

    Round trip

    Economy

    from
    $301Fare subject to changes
    Updated: 18 hours ago

    Saint Louis (STL)to

    Harrisburg (MDT)
    10/28/26 - 11/04/26

    Round trip

    Economy

    from
    $301Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Harrisburg (MDT)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $301Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Harrisburg (MDT)
    09/22/26 - 09/29/26

    Round trip

    Economy

    from
    $301Fare subject to changes
    Updated: 1 hour 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 Harrisburg

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