American Airlines flights from Saint Louis to Phoenix

Recent searches for flights from Saint Louis to Phoenix

Aug 2026
From$561*
Updated: 1 hour ago
Round tripIEconomy
Sep 2026
From$277*
Updated: 1 hour ago
Round tripIEconomy
Oct 2026
From$277*
Updated: 1 hour ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $277
cmp-daily-histogram-bars-legend-max-price-aria-label $663
Displaying fares for August-2026
  • STL–PHX: cmp-view-offers-disclaimer. Find Offers
    25

    Tu

    AUG

  • STL–PHX, 08/26/26 – 09/02/26: From $561
    26

    We

  • STL–PHX, 08/27/26 – 09/03/26: From $653
    27

    Th

  • STL–PHX, 08/28/26 – 09/04/26: From $653
    28

    Fr

  • STL–PHX, 08/29/26 – 09/05/26: From $561
    29

    Sa

  • STL–PHX, 08/30/26 – 09/06/26: From $653
    30

    Su

  • STL–PHX, 08/31/26 – 09/07/26: From $663
    31

    Mo

  • STL–PHX, 09/01/26 – 09/08/26: From $581
    01

    Tu

    SEP

  • STL–PHX, 09/02/26 – 09/09/26: From $561
    02

    We

  • STL–PHX, 09/03/26 – 09/10/26: From $641
    03

    Th

  • STL–PHX, 09/04/26 – 09/06/26: From $609
    04

    Fr

  • STL–PHX, 09/05/26 – 09/12/26: From $483
    05

    Sa

  • STL–PHX, 09/06/26 – 09/13/26: From $517
    06

    Su

  • STL–PHX, 09/07/26 – 09/14/26: From $641
    07

    Mo

  • STL–PHX, 09/08/26 – 09/15/26: From $419
    08

    Tu

  • STL–PHX, 09/09/26 – 09/16/26: From $341
    09

    We

  • STL–PHX, 09/10/26 – 09/17/26: From $361
    10

    Th

  • STL–PHX, 09/11/26 – 09/18/26: From $401
    11

    Fr

  • STL–PHX, 09/12/26 – 09/19/26: From $341
    12

    Sa

  • STL–PHX, 09/13/26 – 09/20/26: From $513
    13

    Su

  • STL–PHX, 09/14/26 – 09/15/26: From $453
    14

    Mo

  • STL–PHX, 09/15/26 – 09/22/26: From $277
    15

    Tu

  • STL–PHX, 09/16/26 – 09/23/26: From $277
    16

    We

  • STL–PHX, 09/17/26 – 09/24/26: From $307
    17

    Th

  • STL–PHX, 09/18/26 – 09/25/26: From $397
    18

    Fr

  • STL–PHX, 09/19/26 – 09/26/26: From $277
    19

    Sa

  • STL–PHX, 09/20/26 – 09/27/26: From $407
    20

    Su

  • STL–PHX, 09/21/26 – 09/28/26: From $297
    21

    Mo

  • STL–PHX, 09/22/26 – 09/29/26: From $277
    22

    Tu

  • STL–PHX, 09/23/26 – 09/27/26: From $347
    23

    We

  • STL–PHX, 09/24/26 – 09/27/26: From $357
    24

    Th

    • range$277-$663

    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 Phoenix flights

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    Saint Louis (STL)to

    Phoenix (PHX)
    09/19/26 - 09/26/26

    Round trip

    Economy

    from
    $277Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Phoenix (PHX)
    11/03/26 - 11/10/26

    Round trip

    Economy

    from
    $277Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Phoenix (PHX)
    11/04/26 - 11/11/26

    Round trip

    Economy

    from
    $277Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Phoenix (PHX)
    11/07/26 - 11/14/26

    Round trip

    Economy

    from
    $277Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Phoenix (PHX)
    11/11/26 - 11/18/26

    Round trip

    Economy

    from
    $277Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Phoenix (PHX)
    10/28/26 - 11/04/26

    Round trip

    Economy

    from
    $277Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Phoenix (PHX)
    10/31/26 - 11/07/26

    Round trip

    Economy

    from
    $277Fare subject to changes
    Updated: 1 hour ago

    Saint Louis (STL)to

    Phoenix (PHX)
    10/03/26 - 10/10/26

    Round trip

    Economy

    from
    $277Fare 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 Phoenix

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