American Airlines flights from Washington, D.C. to Liberia (Costa Rica)

Recent searches for flights from Washington, D.C. to Liberia (Costa Rica)

Aug 2026
From$431*
Updated: 7 hours ago
Round tripIEconomy
Sep 2026
From$368*
Updated: 7 hours ago
Round tripIEconomy
Oct 2026
From$276*
Updated: 7 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $368
cmp-daily-histogram-bars-legend-max-price-aria-label $1.0K
Displaying fares for August-2026
  • DCA–LIR, 08/20/26 – 08/27/26: From $927
    20

    Th

    AUG

  • DCA–LIR, 08/21/26 – 08/28/26: From $536
    21

    Fr

  • DCA–LIR, 08/22/26 – 08/29/26: From $768
    22

    Sa

  • DCA–LIR, 08/23/26 – 08/30/26: From $773
    23

    Su

  • DCA–LIR, 08/24/26 – 08/31/26: From $763
    24

    Mo

  • DCA–LIR, 08/25/26 – 09/01/26: From $755
    25

    Tu

  • DCA–LIR, 08/26/26 – 09/02/26: From $665
    26

    We

  • DCA–LIR, 08/27/26 – 09/03/26: From $451
    27

    Th

  • DCA–LIR, 08/28/26 – 09/04/26: From $451
    28

    Fr

  • DCA–LIR, 08/29/26 – 09/05/26: From $431
    29

    Sa

  • DCA–LIR, 08/30/26 – 09/06/26: From $590
    30

    Su

  • DCA–LIR, 08/31/26 – 09/07/26: From $1,026
    31

    Mo

  • DCA–LIR, 09/01/26 – 09/08/26: From $1,026
    01

    Tu

    SEP

  • DCA–LIR, 09/02/26 – 09/09/26: From $713
    02

    We

  • DCA–LIR, 09/03/26 – 09/10/26: From $965
    03

    Th

  • DCA–LIR, 09/04/26 – 09/11/26: From $632
    04

    Fr

  • DCA–LIR, 09/05/26 – 09/12/26: From $795
    05

    Sa

  • DCA–LIR, 09/06/26 – 09/13/26: From $667
    06

    Su

  • DCA–LIR, 09/07/26 – 09/14/26: From $506
    07

    Mo

  • DCA–LIR, 09/08/26 – 09/15/26: From $661
    08

    Tu

  • DCA–LIR, 09/09/26 – 09/16/26: From $538
    09

    We

  • DCA–LIR, 09/10/26 – 09/17/26: From $373
    10

    Th

  • DCA–LIR, 09/11/26 – 09/18/26: From $368
    11

    Fr

  • DCA–LIR, 09/12/26 – 09/19/26: From $451
    12

    Sa

  • DCA–LIR, 09/13/26 – 09/20/26: From $533
    13

    Su

  • DCA–LIR, 09/14/26 – 09/21/26: From $528
    14

    Mo

  • DCA–LIR, 09/15/26 – 09/22/26: From $730
    15

    Tu

  • DCA–LIR, 09/16/26 – 09/23/26: From $619
    16

    We

  • DCA–LIR, 09/17/26 – 09/24/26: From $544
    17

    Th

  • DCA–LIR, 09/18/26 – 09/25/26: From $548
    18

    Fr

  • DCA–LIR, 09/19/26 – 09/26/26: From $660
    19

    Sa

    • range$368-$1,026

    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 Liberia (Costa Rica) flights

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    *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 Washington, D.C. to Liberia (Costa Rica)

    Looking for lower fares on your trip from Washington, D.C. 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 Washington, D.C. to Liberia (Costa Rica)