American Airlines flights from Boston to San Jose, CR

Recent searches for flights from Boston to San Jose, CR

Aug 2026
From$547*
Updated: 59 minutes ago
Round tripIEconomy
Sep 2026
From$391*
Updated: 13 hours ago
Round tripIEconomy
Oct 2026
From$386*
Updated: 59 minutes ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $406
cmp-daily-histogram-bars-legend-max-price-aria-label $2.5K
Displaying fares for August-2026
  • BOS–SJO, 08/24/26 – 08/31/26: From $730
    24

    Mo

    AUG

  • BOS–SJO, 08/25/26 – 09/01/26: From $719
    25

    Tu

  • BOS–SJO, 08/26/26 – 09/02/26: From $714
    26

    We

  • BOS–SJO, 08/27/26 – 09/03/26: From $714
    27

    Th

  • BOS–SJO, 08/28/26 – 09/04/26: From $547
    28

    Fr

  • BOS–SJO, 08/29/26 – 09/05/26: From $628
    29

    Sa

  • BOS–SJO, 08/30/26 – 09/06/26: From $552
    30

    Su

  • BOS–SJO, 08/31/26 – 09/07/26: From $648
    31

    Mo

  • BOS–SJO, 09/01/26 – 09/08/26: From $577
    01

    Tu

    SEP

  • BOS–SJO, 09/02/26 – 09/09/26: From $2,506
    02

    We

  • BOS–SJO, 09/03/26 – 09/10/26: From $646
    03

    Th

  • BOS–SJO, 09/04/26 – 09/11/26: From $726
    04

    Fr

  • BOS–SJO, 09/05/26 – 09/12/26: From $2,503
    05

    Sa

  • BOS–SJO, 09/06/26 – 09/13/26: From $584
    06

    Su

  • BOS–SJO, 09/07/26 – 09/14/26: From $542
    07

    Mo

  • BOS–SJO, 09/08/26 – 09/15/26: From $495
    08

    Tu

  • BOS–SJO, 09/09/26 – 09/16/26: From $495
    09

    We

  • BOS–SJO, 09/10/26 – 09/17/26: From $490
    10

    Th

  • BOS–SJO, 09/11/26 – 09/18/26: From $423
    11

    Fr

  • BOS–SJO, 09/12/26 – 09/19/26: From $490
    12

    Sa

  • BOS–SJO, 09/13/26 – 09/20/26: From $532
    13

    Su

  • BOS–SJO, 09/14/26 – 09/21/26: From $527
    14

    Mo

  • BOS–SJO, 09/15/26 – 09/22/26: From $646
    15

    Tu

  • BOS–SJO, 09/16/26 – 09/23/26: From $594
    16

    We

  • BOS–SJO, 09/17/26 – 09/21/26: From $428
    17

    Th

  • BOS–SJO, 09/18/26 – 09/25/26: From $490
    18

    Fr

  • BOS–SJO, 09/19/26 – 09/26/26: From $655
    19

    Sa

  • BOS–SJO, 09/20/26 – 09/27/26: From $599
    20

    Su

  • BOS–SJO, 09/21/26 – 09/28/26: From $490
    21

    Mo

  • BOS–SJO, 09/22/26 – 10/06/26: From $406
    22

    Tu

  • BOS–SJO, 09/23/26 – 09/30/26: From $599
    23

    We

    • range$406-$2,506

    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 San Jose, CR flights

    $
    keyboard_arrow_down

    Boston (BOS)to

    San Jose, CR (SJO)
    10/06/26 - 10/13/26

    Round trip

    Economy

    from
    $386Fare subject to changes
    Updated: 59 minutes ago

    Boston (BOS)to

    San Jose, CR (SJO)
    10/15/26 - 10/22/26

    Round trip

    Economy

    from
    $386Fare subject to changes
    Updated: 59 minutes ago

    Boston (BOS)to

    San Jose, CR (SJO)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $386Fare subject to changes
    Updated: 59 minutes ago

    Boston (BOS)to

    San Jose, CR (SJO)
    10/26/26 - 11/02/26

    Round trip

    Economy

    from
    $386Fare subject to changes
    Updated: 59 minutes ago

    Boston (BOS)to

    San Jose, CR (SJO)
    10/30/26 - 11/06/26

    Round trip

    Economy

    from
    $386Fare subject to changes
    Updated: 59 minutes ago

    Boston (BOS)to

    San Jose, CR (SJO)
    10/08/26 - 10/15/26

    Round trip

    Economy

    from
    $386Fare subject to changes
    Updated: 59 minutes ago

    Boston (BOS)to

    San Jose, CR (SJO)
    10/13/26 - 10/20/26

    Round trip

    Economy

    from
    $386Fare subject to changes
    Updated: 59 minutes ago

    Boston (BOS)to

    San Jose, CR (SJO)
    10/19/26 - 10/26/26

    Round trip

    Economy

    from
    $386Fare subject to changes
    Updated: 59 minutes 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 San Jose, CR

    Looking for lower fares on your trip from Boston to San Jose, CR? 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 San Jose, CR