American Airlines flights from Saint Louis to Liberia (Costa Rica)

Recent searches for flights from Saint Louis to Liberia (Costa Rica)

Jul 2026
From$1,339*
Updated: 6 hours ago
Round tripIEconomy
Aug 2026
From$415*
Updated: 6 hours ago
Round tripIEconomy
Sep 2026
From$415*
Updated: 6 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $415
cmp-daily-histogram-bars-legend-max-price-aria-label $3.0K
Displaying fares for July-2026
  • STL–LIR: cmp-view-offers-disclaimer. Find Offers
    30

    Th

    JUL

  • STL–LIR, 07/31/26 – 08/07/26: From $1,339
    31

    Fr

  • STL–LIR, 08/01/26 – 08/08/26: From $2,963
    01

    Sa

    AUG

  • STL–LIR, 08/02/26 – 08/09/26: From $1,359
    02

    Su

  • STL–LIR, 08/03/26 – 08/10/26: From $1,354
    03

    Mo

  • STL–LIR, 08/04/26 – 08/11/26: From $1,324
    04

    Tu

  • STL–LIR, 08/05/26 – 08/12/26: From $1,139
    05

    We

  • STL–LIR, 08/06/26 – 08/13/26: From $1,339
    06

    Th

  • STL–LIR, 08/07/26 – 08/14/26: From $1,344
    07

    Fr

  • STL–LIR, 08/08/26 – 08/15/26: From $1,354
    08

    Sa

  • STL–LIR, 08/09/26 – 08/16/26: From $997
    09

    Su

  • STL–LIR, 08/10/26 – 08/17/26: From $739
    10

    Mo

  • STL–LIR, 08/11/26 – 08/18/26: From $739
    11

    Tu

  • STL–LIR, 08/12/26 – 08/19/26: From $644
    12

    We

  • STL–LIR, 08/13/26 – 08/20/26: From $642
    13

    Th

  • STL–LIR, 08/14/26 – 08/21/26: From $642
    14

    Fr

  • STL–LIR, 08/15/26 – 08/22/26: From $1,134
    15

    Sa

  • STL–LIR, 08/16/26 – 08/23/26: From $837
    16

    Su

  • STL–LIR, 08/17/26 – 08/24/26: From $639
    17

    Mo

  • STL–LIR, 08/18/26 – 08/25/26: From $584
    18

    Tu

  • STL–LIR, 08/19/26 – 08/26/26: From $609
    19

    We

  • STL–LIR, 08/20/26 – 08/27/26: From $932
    20

    Th

  • STL–LIR, 08/21/26 – 08/28/26: From $610
    21

    Fr

  • STL–LIR, 08/22/26 – 08/29/26: From $658
    22

    Sa

  • STL–LIR, 08/23/26 – 08/30/26: From $901
    23

    Su

  • STL–LIR, 08/24/26 – 08/31/26: From $658
    24

    Mo

  • STL–LIR, 08/25/26 – 09/01/26: From $415
    25

    Tu

  • STL–LIR, 08/26/26 – 09/02/26: From $455
    26

    We

  • STL–LIR, 08/27/26 – 09/03/26: From $526
    27

    Th

  • STL–LIR, 08/28/26 – 09/04/26: From $526
    28

    Fr

  • STL–LIR, 08/29/26 – 09/05/26: From $516
    29

    Sa

    • range$415-$2,963

    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 Liberia (Costa Rica) flights

    $
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    Saint Louis (STL)to

    Liberia (Costa Rica) (LIR)
    09/15/26 - 09/22/26

    Round trip

    Economy

    from
    $415Fare subject to changes
    Updated: 6 hours ago

    Saint Louis (STL)to

    Liberia (Costa Rica) (LIR)
    08/25/26 - 09/01/26

    Round trip

    Economy

    from
    $415Fare subject to changes
    Updated: 6 hours ago

    Saint Louis (STL)to

    Liberia (Costa Rica) (LIR)
    09/22/26 - 09/29/26

    Round trip

    Economy

    from
    $415Fare subject to changes
    Updated: 6 hours ago

    Saint Louis (STL)to

    Liberia (Costa Rica) (LIR)
    09/18/26 - 09/25/26

    Round trip

    Economy

    from
    $440Fare subject to changes
    Updated: 6 hours ago

    Saint Louis (STL)to

    Liberia (Costa Rica) (LIR)
    09/11/26 - 09/18/26

    Round trip

    Economy

    from
    $440Fare subject to changes
    Updated: 6 hours ago

    Saint Louis (STL)to

    Liberia (Costa Rica) (LIR)
    09/17/26 - 09/24/26

    Round trip

    Economy

    from
    $440Fare subject to changes
    Updated: 6 hours ago

    Saint Louis (STL)to

    Liberia (Costa Rica) (LIR)
    09/10/26 - 09/17/26

    Round trip

    Economy

    from
    $445Fare subject to changes
    Updated: 6 hours ago

    Saint Louis (STL)to

    Liberia (Costa Rica) (LIR)
    09/19/26 - 09/26/26

    Round trip

    Economy

    from
    $445Fare subject to changes
    Updated: 6 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 Saint Louis to Liberia (Costa Rica)

    Looking for lower fares on your trip from Saint Louis to Liberia (Costa Rica)? 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 Liberia (Costa Rica)