American Airlines flights from Philadelphia to Liberia (Costa Rica)

Recent searches for flights from Philadelphia to Liberia (Costa Rica)

Aug 2026
From$717*
Updated: 4 hours ago
Round tripIEconomy
Sep 2026
From$442*
Updated: 4 hours ago
Round tripIEconomy
Oct 2026
From$388*
Updated: 4 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $442
cmp-daily-histogram-bars-legend-max-price-aria-label $1.3K
Displaying fares for August-2026
  • PHL–LIR: cmp-view-offers-disclaimer. Find Offers
    19

    We

    AUG

  • PHL–LIR, 08/20/26 – 08/27/26: From $1,308
    20

    Th

  • PHL–LIR, 08/21/26 – 08/28/26: From $717
    21

    Fr

  • PHL–LIR, 08/22/26 – 08/29/26: From $874
    22

    Sa

  • PHL–LIR, 08/23/26 – 08/30/26: From $852
    23

    Su

  • PHL–LIR, 08/24/26 – 08/31/26: From $842
    24

    Mo

  • PHL–LIR, 08/25/26 – 09/01/26: From $865
    25

    Tu

  • PHL–LIR, 08/26/26 – 08/31/26: From $727
    26

    We

  • PHL–LIR, 08/27/26 – 09/03/26: From $717
    27

    Th

  • PHL–LIR, 08/28/26 – 09/04/26: From $717
    28

    Fr

  • PHL–LIR, 08/29/26 – 09/05/26: From $717
    29

    Sa

  • PHL–LIR, 08/30/26 – 09/06/26: From $722
    30

    Su

  • PHL–LIR, 08/31/26 – 09/07/26: From $1,024
    31

    Mo

  • PHL–LIR, 09/01/26 – 09/08/26: From $1,291
    01

    Tu

    SEP

  • PHL–LIR, 09/02/26 – 09/09/26: From $621
    02

    We

  • PHL–LIR, 09/03/26 – 09/10/26: From $910
    03

    Th

  • PHL–LIR, 09/04/26 – 09/11/26: From $747
    04

    Fr

  • PHL–LIR, 09/05/26 – 09/12/26: From $872
    05

    Sa

  • PHL–LIR, 09/06/26 – 09/13/26: From $763
    06

    Su

  • PHL–LIR, 09/07/26 – 09/14/26: From $753
    07

    Mo

  • PHL–LIR, 09/08/26 – 09/15/26: From $677
    08

    Tu

  • PHL–LIR, 09/09/26 – 09/16/26: From $540
    09

    We

  • PHL–LIR, 09/10/26 – 09/17/26: From $442
    10

    Th

  • PHL–LIR, 09/11/26 – 09/18/26: From $442
    11

    Fr

  • PHL–LIR, 09/12/26 – 09/19/26: From $485
    12

    Sa

  • PHL–LIR, 09/13/26 – 09/20/26: From $534
    13

    Su

  • PHL–LIR, 09/14/26 – 09/21/26: From $529
    14

    Mo

  • PHL–LIR, 09/15/26 – 09/22/26: From $563
    15

    Tu

  • PHL–LIR, 09/16/26 – 09/23/26: From $687
    16

    We

  • PHL–LIR, 09/17/26 – 09/24/26: From $590
    17

    Th

  • PHL–LIR, 09/18/26 – 09/25/26: From $590
    18

    Fr

    • range$442-$1,308

    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 Philadelphia to Liberia (Costa Rica) flights

    $
    keyboard_arrow_down

    Philadelphia (PHL)to

    Liberia (Costa Rica) (LIR)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $388Fare subject to changes
    Updated: 4 hours ago

    Philadelphia (PHL)to

    Liberia (Costa Rica) (LIR)
    10/13/26 - 10/20/26

    Round trip

    Economy

    from
    $388Fare subject to changes
    Updated: 4 hours ago

    Philadelphia (PHL)to

    Liberia (Costa Rica) (LIR)
    10/20/26 - 10/27/26

    Round trip

    Economy

    from
    $388Fare subject to changes
    Updated: 4 hours ago

    Philadelphia (PHL)to

    Liberia (Costa Rica) (LIR)
    10/27/26 - 11/03/26

    Round trip

    Economy

    from
    $388Fare subject to changes
    Updated: 4 hours ago

    Philadelphia (PHL)to

    Liberia (Costa Rica) (LIR)
    10/14/26 - 10/21/26

    Round trip

    Economy

    from
    $393Fare subject to changes
    Updated: 4 hours ago

    Philadelphia (PHL)to

    Liberia (Costa Rica) (LIR)
    10/28/26 - 11/04/26

    Round trip

    Economy

    from
    $393Fare subject to changes
    Updated: 4 hours ago

    Philadelphia (PHL)to

    Liberia (Costa Rica) (LIR)
    10/17/26 - 10/22/26

    Round trip

    Economy

    from
    $393Fare subject to changes
    Updated: 5 hours ago

    Philadelphia (PHL)to

    Liberia (Costa Rica) (LIR)
    10/10/26 - 10/15/26

    Round trip

    Economy

    from
    $393Fare subject to changes
    Updated: 4 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 Philadelphia to Liberia (Costa Rica)

    Looking for lower fares on your trip from Philadelphia 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 Philadelphia to Liberia (Costa Rica)