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

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

Sep 2026
From$384*
Updated: 15 hours ago
Round tripIEconomy
Oct 2026
From$329*
Updated: 15 hours ago
Round tripIEconomy
Nov 2026
From$355*
Updated: 15 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $360
cmp-daily-histogram-bars-legend-max-price-aria-label $752
Displaying fares for September-2026
  • WAS–LIR: cmp-view-offers-disclaimer. Find Offers
    08

    Tu

    SEP

  • DCA–LIR, 09/09/26 – 09/16/26: From $605
    09

    We

  • DCA–LIR, 09/10/26 – 09/17/26: From $466
    10

    Th

  • DCA–LIR, 09/11/26 – 09/18/26: From $455
    11

    Fr

  • DCA–LIR, 09/12/26 – 09/19/26: From $460
    12

    Sa

  • DCA–LIR, 09/13/26 – 09/20/26: From $460
    13

    Su

  • DCA–LIR, 09/14/26 – 09/21/26: From $516
    14

    Mo

  • DCA–LIR, 09/15/26 – 09/22/26: From $467
    15

    Tu

  • DCA–LIR, 09/16/26 – 09/23/26: From $678
    16

    We

  • DCA–LIR, 09/17/26 – 09/24/26: From $505
    17

    Th

  • DCA–LIR, 09/18/26 – 09/25/26: From $441
    18

    Fr

  • DCA–LIR, 09/19/26 – 09/26/26: From $431
    19

    Sa

  • DCA–LIR, 09/20/26 – 09/27/26: From $431
    20

    Su

  • DCA–LIR, 09/21/26 – 09/28/26: From $426
    21

    Mo

  • DCA–LIR, 09/22/26 – 09/29/26: From $752
    22

    Tu

  • DCA–LIR, 09/23/26 – 09/30/26: From $656
    23

    We

  • DCA–LIR, 09/24/26 – 10/01/26: From $384
    24

    Th

  • DCA–LIR, 09/25/26 – 10/02/26: From $384
    25

    Fr

  • DCA–LIR, 09/26/26 – 10/03/26: From $394
    26

    Sa

  • DCA–LIR, 09/27/26 – 10/04/26: From $394
    27

    Su

  • DCA–LIR, 09/28/26 – 10/05/26: From $389
    28

    Mo

  • DCA–LIR, 09/29/26 – 10/06/26: From $625
    29

    Tu

  • DCA–LIR, 09/30/26 – 10/07/26: From $626
    30

    We

  • DCA–LIR, 10/01/26 – 10/08/26: From $365
    01

    Th

    OCT

  • DCA–LIR, 10/02/26 – 10/09/26: From $360
    02

    Fr

  • DCA–LIR, 10/03/26 – 10/10/26: From $369
    03

    Sa

  • DCA–LIR, 10/04/26 – 10/11/26: From $413
    04

    Su

  • DCA–LIR, 10/05/26 – 10/12/26: From $463
    05

    Mo

  • DCA–LIR, 10/06/26 – 10/13/26: From $451
    06

    Tu

  • DCA–LIR, 10/07/26 – 10/14/26: From $456
    07

    We

    • range$360-$752

    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

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    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)