American Airlines flights from Seattle to San Juan

Recent searches for flights from Seattle to San Juan

Aug 2026
From$692*
Updated: 11 hours ago
Round tripIEconomy
Sep 2026
From$514*
Updated: 11 hours ago
Round tripIEconomy
Oct 2026
From$514*
Updated: 11 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $514
cmp-daily-histogram-bars-legend-max-price-aria-label $804
Displaying fares for August-2026
  • SEA–SJU: cmp-view-offers-disclaimer. Find Offers
    16

    Su

    AUG

  • SEA–SJU, 08/17/26 – 08/24/26: From $804
    17

    Mo

  • SEA–SJU, 08/18/26 – 08/25/26: From $692
    18

    Tu

  • SEA–SJU, 08/19/26 – 08/26/26: From $697
    19

    We

  • SEA–SJU, 08/20/26 – 08/27/26: From $692
    20

    Th

  • SEA–SJU, 08/21/26 – 08/28/26: From $727
    21

    Fr

  • SEA–SJU, 08/22/26 – 08/29/26: From $727
    22

    Sa

  • SEA–SJU, 08/23/26 – 08/30/26: From $692
    23

    Su

  • SEA–SJU, 08/24/26 – 08/31/26: From $692
    24

    Mo

  • SEA–SJU, 08/25/26 – 09/01/26: From $692
    25

    Tu

  • SEA–SJU, 08/26/26 – 09/02/26: From $697
    26

    We

  • SEA–SJU, 08/27/26 – 09/03/26: From $692
    27

    Th

  • SEA–SJU, 08/28/26 – 09/04/26: From $692
    28

    Fr

  • SEA–SJU, 08/29/26 – 09/05/26: From $727
    29

    Sa

  • SEA–SJU, 08/30/26 – 09/06/26: From $692
    30

    Su

  • SEA–SJU, 08/31/26 – 09/07/26: From $742
    31

    Mo

  • SEA–SJU, 09/01/26 – 09/08/26: From $742
    01

    Tu

    SEP

  • SEA–SJU, 09/02/26 – 09/09/26: From $697
    02

    We

  • SEA–SJU, 09/03/26 – 09/10/26: From $717
    03

    Th

  • SEA–SJU, 09/04/26 – 09/11/26: From $717
    04

    Fr

  • SEA–SJU, 09/05/26 – 09/12/26: From $751
    05

    Sa

  • SEA–SJU, 09/06/26 – 09/13/26: From $555
    06

    Su

  • SEA–SJU, 09/07/26 – 09/14/26: From $596
    07

    Mo

  • SEA–SJU, 09/08/26 – 09/15/26: From $589
    08

    Tu

  • SEA–SJU, 09/09/26 – 09/16/26: From $519
    09

    We

  • SEA–SJU, 09/10/26 – 09/17/26: From $589
    10

    Th

  • SEA–SJU, 09/11/26 – 09/18/26: From $514
    11

    Fr

  • SEA–SJU, 09/12/26 – 09/19/26: From $514
    12

    Sa

  • SEA–SJU: cmp-view-offers-disclaimer. Find Offers
    13

    Su

  • SEA–SJU: cmp-view-offers-disclaimer. Find Offers
    14

    Mo

  • SEA–SJU: cmp-view-offers-disclaimer. Find Offers
    15

    Tu

    • range$514-$804

    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 Seattle to San Juan flights

    $
    keyboard_arrow_down

    Seattle (SEA)to

    San Juan (SJU)
    10/03/26 - 10/10/26

    Round trip

    Economy

    from
    $514Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    San Juan (SJU)
    10/08/26 - 10/15/26

    Round trip

    Economy

    from
    $514Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    San Juan (SJU)
    10/11/26 - 10/18/26

    Round trip

    Economy

    from
    $514Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    San Juan (SJU)
    10/18/26 - 10/25/26

    Round trip

    Economy

    from
    $514Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    San Juan (SJU)
    10/22/26 - 10/29/26

    Round trip

    Economy

    from
    $514Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    San Juan (SJU)
    10/25/26 - 11/01/26

    Round trip

    Economy

    from
    $514Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    San Juan (SJU)
    09/12/26 - 09/19/26

    Round trip

    Economy

    from
    $514Fare subject to changes
    Updated: 11 hours ago

    Seattle (SEA)to

    San Juan (SJU)
    09/19/26 - 09/26/26

    Round trip

    Economy

    from
    $514Fare subject to changes
    Updated: 11 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 Seattle to San Juan

    Looking for lower fares on your trip from Seattle to San Juan? 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 Seattle to San Juan