American Airlines flights from Washington, D.C. to Saint Louis

Recent searches for flights from Washington, D.C. to Saint Louis

Sep 2026
From$368*
Updated: 23 minutes ago
Round tripIEconomy
Oct 2026
From$231*
Updated: 53 minutes ago
Round tripIEconomy
Nov 2026
From$231*
Updated: 53 minutes ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $231
cmp-daily-histogram-bars-legend-max-price-aria-label $505
Displaying fares for September-2026
  • DCA–STL, 09/15/26 – 09/16/26: From $505
    15

    Tu

    SEP

  • WAS–STL, 09/16/26 – 09/23/26: From $391
    16

    We

  • WAS–STL, 09/17/26 – 09/24/26: From $451
    17

    Th

  • WAS–STL, 09/18/26 – 09/25/26: From $489
    18

    Fr

  • WAS–STL, 09/19/26 – 09/26/26: From $391
    19

    Sa

  • WAS–STL, 09/20/26 – 09/27/26: From $473
    20

    Su

  • WAS–STL, 09/21/26 – 09/28/26: From $473
    21

    Mo

  • WAS–STL, 09/22/26 – 09/29/26: From $391
    22

    Tu

  • WAS–STL, 09/23/26 – 09/30/26: From $391
    23

    We

  • WAS–STL, 09/24/26 – 10/01/26: From $451
    24

    Th

  • WAS–STL, 09/25/26 – 10/02/26: From $451
    25

    Fr

  • WAS–STL, 09/26/26 – 10/03/26: From $391
    26

    Sa

  • WAS–STL, 09/27/26 – 10/04/26: From $473
    27

    Su

  • WAS–STL, 09/28/26 – 10/05/26: From $427
    28

    Mo

  • DCA–STL, 09/29/26 – 10/06/26: From $368
    29

    Tu

  • DCA–STL, 09/30/26 – 10/07/26: From $368
    30

    We

  • WAS–STL, 10/01/26 – 10/08/26: From $408
    01

    Th

    OCT

  • WAS–STL, 10/02/26 – 10/09/26: From $429
    02

    Fr

  • DCA–STL, 10/03/26 – 10/10/26: From $378
    03

    Sa

  • WAS–STL, 10/04/26 – 10/13/26: From $396
    04

    Su

  • DCA–STL, 10/05/26 – 10/12/26: From $285
    05

    Mo

  • DCA–STL, 10/06/26 – 10/13/26: From $231
    06

    Tu

  • DCA–STL, 10/07/26 – 10/14/26: From $231
    07

    We

  • DCA–STL, 10/08/26 – 10/15/26: From $265
    08

    Th

  • DCA–STL, 10/09/26 – 10/16/26: From $297
    09

    Fr

  • DCA–STL, 10/10/26 – 10/17/26: From $241
    10

    Sa

  • WAS–STL, 10/11/26 – 10/18/26: From $387
    11

    Su

  • DCA–STL, 10/12/26 – 10/19/26: From $255
    12

    Mo

  • DCA–STL, 10/13/26 – 10/16/26: From $264
    13

    Tu

  • WAS–STL, 10/14/26 – 10/19/26: From $243
    14

    We

    • range$231-$505

    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 Washington, D.C. to Saint Louis flights

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    Washington, D.C. (WAS)to

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

    Round trip

    Economy

    from
    $231Fare subject to changes
    Updated: 23 minutes ago

    Washington, D.C. (WAS)to

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

    Round trip

    Economy

    from
    $231Fare subject to changes
    Updated: 23 minutes ago

    Washington, D.C. (WAS)to

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

    Round trip

    Economy

    from
    $231Fare subject to changes
    Updated: 23 minutes ago

    Washington, D.C. (WAS)to

    Saint Louis (STL)
    12/09/26 - 12/16/26

    Round trip

    Economy

    from
    $231Fare subject to changes
    Updated: 23 minutes ago

    Washington, D.C. (WAS)to

    Saint Louis (STL)
    11/04/26 - 11/11/26

    Round trip

    Economy

    from
    $231Fare subject to changes
    Updated: 23 minutes ago

    Washington, D.C. (WAS)to

    Saint Louis (STL)
    11/10/26 - 11/17/26

    Round trip

    Economy

    from
    $231Fare subject to changes
    Updated: 23 minutes ago

    Washington, D.C. (WAS)to

    Saint Louis (STL)
    11/11/26 - 11/18/26

    Round trip

    Economy

    from
    $231Fare subject to changes
    Updated: 23 minutes ago

    Washington, D.C. (WAS)to

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

    Round trip

    Economy

    from
    $231Fare subject to changes
    Updated: 23 minutes 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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