American Airlines flights from Colorado Springs to Saint Louis

Recent searches for flights from Colorado Springs to Saint Louis

Aug 2026
From$270*
Updated: 5 hours ago
Round tripIEconomy
Sep 2026
From$245*
Updated: 9 hours ago
Round tripIEconomy
Oct 2026
From$245*
Updated: 9 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $247
cmp-daily-histogram-bars-legend-max-price-aria-label $710
Displaying fares for August-2026
  • COS–STL: cmp-view-offers-disclaimer. Find Offers
    12

    We

    AUG

  • COS–STL, 08/13/26 – 08/20/26: From $660
    13

    Th

  • COS–STL, 08/14/26 – 08/21/26: From $660
    14

    Fr

  • COS–STL, 08/15/26 – 08/22/26: From $589
    15

    Sa

  • COS–STL, 08/16/26 – 08/23/26: From $706
    16

    Su

  • COS–STL, 08/17/26 – 08/24/26: From $660
    17

    Mo

  • COS–STL, 08/18/26 – 08/25/26: From $521
    18

    Tu

  • COS–STL, 08/19/26 – 08/26/26: From $521
    19

    We

  • COS–STL, 08/20/26 – 08/27/26: From $588
    20

    Th

  • COS–STL, 08/21/26 – 08/28/26: From $588
    21

    Fr

  • COS–STL, 08/22/26 – 08/29/26: From $521
    22

    Sa

  • COS–STL, 08/23/26 – 08/30/26: From $588
    23

    Su

  • COS–STL, 08/24/26 – 08/31/26: From $506
    24

    Mo

  • COS–STL, 08/25/26 – 09/01/26: From $310
    25

    Tu

  • COS–STL, 08/26/26 – 09/02/26: From $415
    26

    We

  • COS–STL, 08/27/26 – 09/03/26: From $457
    27

    Th

  • COS–STL, 08/28/26 – 09/04/26: From $565
    28

    Fr

  • COS–STL, 08/29/26 – 09/05/26: From $310
    29

    Sa

  • COS–STL, 08/30/26 – 09/06/26: From $395
    30

    Su

  • COS–STL, 08/31/26 – 09/07/26: From $270
    31

    Mo

  • COS–STL, 09/01/26 – 09/08/26: From $247
    01

    Tu

    SEP

  • COS–STL, 09/02/26 – 09/09/26: From $247
    02

    We

  • COS–STL, 09/03/26 – 09/10/26: From $247
    03

    Th

  • COS–STL, 09/04/26 – 09/11/26: From $311
    04

    Fr

  • COS–STL, 09/05/26 – 09/12/26: From $247
    05

    Sa

  • COS–STL, 09/06/26 – 09/13/26: From $365
    06

    Su

  • COS–STL, 09/07/26 – 09/14/26: From $710
    07

    Mo

  • COS–STL, 09/08/26 – 09/15/26: From $351
    08

    Tu

  • COS–STL: cmp-view-offers-disclaimer. Find Offers
    09

    We

  • COS–STL: cmp-view-offers-disclaimer. Find Offers
    10

    Th

  • COS–STL: cmp-view-offers-disclaimer. Find Offers
    11

    Fr

    • range$247-$710

    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 Colorado Springs to Saint Louis flights

    $
    keyboard_arrow_down

    Colorado Springs (COS)to

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

    Round trip

    Economy

    from
    $245Fare subject to changes
    Updated: 9 hours ago

    Colorado Springs (COS)to

    Saint Louis (STL)
    10/07/26 - 10/14/26

    Round trip

    Economy

    from
    $245Fare subject to changes
    Updated: 9 hours ago

    Colorado Springs (COS)to

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

    Round trip

    Economy

    from
    $245Fare subject to changes
    Updated: 9 hours ago

    Colorado Springs (COS)to

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

    Round trip

    Economy

    from
    $245Fare subject to changes
    Updated: 9 hours ago

    Colorado Springs (COS)to

    Saint Louis (STL)
    09/22/26 - 09/29/26

    Round trip

    Economy

    from
    $245Fare subject to changes
    Updated: 9 hours ago

    Colorado Springs (COS)to

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

    Round trip

    Economy

    from
    $245Fare subject to changes
    Updated: 9 hours ago

    Colorado Springs (COS)to

    Saint Louis (STL)
    09/29/26 - 10/06/26

    Round trip

    Economy

    from
    $245Fare subject to changes
    Updated: 9 hours ago

    Colorado Springs (COS)to

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

    Round trip

    Economy

    from
    $245Fare subject to changes
    Updated: 9 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 Colorado Springs to Saint Louis

    Looking for lower fares on your trip from Colorado Springs 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 Colorado Springs to Saint Louis