American Airlines flights from Chicago to Saint Louis

Recent searches for flights from Chicago to Saint Louis

Sep 2026
From$366*
Updated: 15 hours ago
Round tripIEconomy
Oct 2026
From$243*
Updated: 15 hours ago
Round tripIEconomy
Nov 2026
From$243*
Updated: 15 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $243
cmp-daily-histogram-bars-legend-max-price-aria-label $579
Displaying fares for September-2026
  • ORD–STL, 09/17/26 – 09/19/26: From $553
    17

    Th

    SEP

  • ORD–STL, 09/18/26 – 09/25/26: From $579
    18

    Fr

  • ORD–STL, 09/19/26 – 09/26/26: From $527
    19

    Sa

  • ORD–STL, 09/20/26 – 09/27/26: From $579
    20

    Su

  • ORD–STL, 09/21/26 – 09/28/26: From $579
    21

    Mo

  • ORD–STL, 09/22/26 – 09/29/26: From $527
    22

    Tu

  • ORD–STL, 09/23/26 – 09/30/26: From $508
    23

    We

  • ORD–STL, 09/24/26 – 10/23/26: From $447
    24

    Th

  • ORD–STL, 09/25/26 – 10/02/26: From $534
    25

    Fr

  • ORD–STL, 09/26/26 – 10/25/26: From $457
    26

    Sa

  • ORD–STL, 09/27/26 – 10/25/26: From $483
    27

    Su

  • ORD–STL, 09/28/26 – 10/05/26: From $429
    28

    Mo

  • ORD–STL, 09/29/26 – 10/06/26: From $385
    29

    Tu

  • ORD–STL, 09/30/26 – 10/07/26: From $366
    30

    We

  • ORD–STL, 10/01/26 – 10/08/26: From $384
    01

    Th

    OCT

  • ORD–STL, 10/02/26 – 10/09/26: From $402
    02

    Fr

  • ORD–STL, 10/03/26 – 10/10/26: From $366
    03

    Sa

  • ORD–STL, 10/04/26 – 10/11/26: From $449
    04

    Su

  • ORD–STL, 10/05/26 – 10/12/26: From $279
    05

    Mo

  • ORD–STL, 10/06/26 – 10/13/26: From $243
    06

    Tu

  • ORD–STL, 10/07/26 – 10/14/26: From $243
    07

    We

  • ORD–STL, 10/08/26 – 10/15/26: From $279
    08

    Th

  • ORD–STL, 10/09/26 – 10/16/26: From $315
    09

    Fr

  • ORD–STL, 10/10/26 – 10/17/26: From $243
    10

    Sa

  • ORD–STL, 10/11/26 – 10/18/26: From $398
    11

    Su

  • ORD–STL, 10/12/26 – 10/19/26: From $279
    12

    Mo

  • ORD–STL, 10/13/26 – 10/20/26: From $243
    13

    Tu

  • ORD–STL: cmp-view-offers-disclaimer. Find Offers
    14

    We

  • ORD–STL: cmp-view-offers-disclaimer. Find Offers
    15

    Th

  • ORD–STL, 10/16/26 – 10/31/26: From $279
    16

    Fr

    • range$243-$579

    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 Chicago to Saint Louis flights

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    Chicago (ORD)to

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

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 15 hours ago

    Chicago (ORD)to

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

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 15 hours ago

    Chicago (ORD)to

    Saint Louis (STL)
    10/13/26 - 10/20/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 15 hours ago

    Chicago (ORD)to

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

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 15 hours ago

    Chicago (ORD)to

    Saint Louis (STL)
    12/01/26 - 12/08/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 15 hours ago

    Chicago (ORD)to

    Saint Louis (STL)
    12/02/26 - 12/09/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 15 hours ago

    Chicago (ORD)to

    Saint Louis (STL)
    11/17/26 - 11/24/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 15 hours ago

    Chicago (ORD)to

    Saint Louis (STL)
    11/24/26 - 12/01/26

    Round trip

    Economy

    from
    $243Fare subject to changes
    Updated: 15 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.

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