American Airlines flights from Boston to Liberia (Costa Rica)

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

Jul 2026
From$1,416*
Updated: 6 hours ago
Round tripIEconomy
Aug 2026
From$433*
Updated: 6 hours ago
Round tripIEconomy
Sep 2026
From$391*
Updated: 10 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $433
cmp-daily-histogram-bars-legend-max-price-aria-label $2.6K
Displaying fares for July-2026
  • BOS–LIR: cmp-view-offers-disclaimer. Find Offers
    30

    Th

    JUL

  • BOS–LIR, 07/31/26 – 08/07/26: From $1,416
    31

    Fr

  • BOS–LIR, 08/01/26 – 08/08/26: From $2,640
    01

    Sa

    AUG

  • BOS–LIR, 08/02/26 – 08/09/26: From $2,054
    02

    Su

  • BOS–LIR, 08/03/26 – 08/10/26: From $2,049
    03

    Mo

  • BOS–LIR, 08/04/26 – 08/11/26: From $1,509
    04

    Tu

  • BOS–LIR, 08/05/26 – 08/12/26: From $964
    05

    We

  • BOS–LIR, 08/06/26 – 08/13/26: From $1,712
    06

    Th

  • BOS–LIR, 08/07/26 – 08/14/26: From $1,712
    07

    Fr

  • BOS–LIR, 08/08/26 – 08/15/26: From $1,385
    08

    Sa

  • BOS–LIR, 08/09/26 – 08/16/26: From $1,410
    09

    Su

  • BOS–LIR, 08/10/26 – 08/17/26: From $949
    10

    Mo

  • BOS–LIR, 08/11/26 – 08/18/26: From $876
    11

    Tu

  • BOS–LIR, 08/12/26 – 08/19/26: From $881
    12

    We

  • BOS–LIR, 08/13/26 – 08/20/26: From $906
    13

    Th

  • BOS–LIR, 08/14/26 – 08/21/26: From $989
    14

    Fr

  • BOS–LIR, 08/15/26 – 08/22/26: From $1,450
    15

    Sa

  • BOS–LIR, 08/16/26 – 08/23/26: From $1,450
    16

    Su

  • BOS–LIR, 08/17/26 – 08/24/26: From $883
    17

    Mo

  • BOS–LIR, 08/18/26 – 08/25/26: From $912
    18

    Tu

  • BOS–LIR, 08/19/26 – 08/26/26: From $781
    19

    We

  • BOS–LIR, 08/20/26 – 08/27/26: From $989
    20

    Th

  • BOS–LIR, 08/21/26 – 08/28/26: From $777
    21

    Fr

  • BOS–LIR, 08/22/26 – 08/29/26: From $816
    22

    Sa

  • BOS–LIR, 08/23/26 – 08/29/26: From $712
    23

    Su

  • BOS–LIR, 08/24/26 – 08/31/26: From $689
    24

    Mo

  • BOS–LIR, 08/25/26 – 09/01/26: From $547
    25

    Tu

  • BOS–LIR, 08/26/26 – 09/02/26: From $441
    26

    We

  • BOS–LIR, 08/27/26 – 09/03/26: From $433
    27

    Th

  • BOS–LIR, 08/28/26 – 09/04/26: From $438
    28

    Fr

  • BOS–LIR, 08/29/26 – 09/05/26: From $438
    29

    Sa

    • range$433-$2,640

    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 Boston to Liberia (Costa Rica) flights

    $
    keyboard_arrow_down

    Boston (BOS)to

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

    Round trip

    Economy

    from
    $430Fare subject to changes
    Updated: 6 hours ago

    Boston (BOS)to

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

    Round trip

    Economy

    from
    $386Fare subject to changes
    Updated: 10 hours ago

    Boston (BOS)to

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

    Round trip

    Economy

    from
    $386Fare subject to changes
    Updated: 10 hours ago

    Boston (BOS)to

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

    Round trip

    Economy

    from
    $391Fare subject to changes
    Updated: 10 hours ago

    Boston (BOS)to

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

    Round trip

    Economy

    from
    $391Fare subject to changes
    Updated: 10 hours ago

    Boston (BOS)to

    Liberia (Costa Rica) (LIR)
    09/29/26 - 10/06/26

    Round trip

    Economy

    from
    $391Fare subject to changes
    Updated: 10 hours ago

    Boston (BOS)to

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

    Round trip

    Economy

    from
    $391Fare subject to changes
    Updated: 10 hours ago

    Boston (BOS)to

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

    Round trip

    Economy

    from
    $391Fare subject to changes
    Updated: 10 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 Boston to Liberia (Costa Rica)

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