American Airlines flights from Ontario to San Juan

Recent searches for flights from Ontario to San Juan

Aug 2026
From$580*
Updated: 2 hours ago
Round tripIEconomy
Sep 2026
From$342*
Updated: 2 hours ago
Round tripIEconomy
Oct 2026
From$342*
Updated: 2 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $481
cmp-daily-histogram-bars-legend-max-price-aria-label $1.0K
Displaying fares for August-2026
  • ONT–SJU, 08/13/26 – 08/20/26: From $801
    13

    Th

    AUG

  • ONT–SJU, 08/14/26 – 08/21/26: From $676
    14

    Fr

  • ONT–SJU, 08/15/26 – 08/22/26: From $676
    15

    Sa

  • ONT–SJU, 08/16/26 – 08/23/26: From $841
    16

    Su

  • ONT–SJU, 08/17/26 – 08/24/26: From $676
    17

    Mo

  • ONT–SJU, 08/18/26 – 08/25/26: From $676
    18

    Tu

  • ONT–SJU, 08/19/26 – 08/26/26: From $681
    19

    We

  • ONT–SJU, 08/20/26 – 08/27/26: From $1,007
    20

    Th

  • ONT–SJU, 08/21/26 – 08/28/26: From $676
    21

    Fr

  • ONT–SJU, 08/22/26 – 08/29/26: From $676
    22

    Sa

  • ONT–SJU, 08/23/26 – 08/30/26: From $676
    23

    Su

  • ONT–SJU, 08/24/26 – 08/31/26: From $676
    24

    Mo

  • ONT–SJU, 08/25/26 – 09/01/26: From $676
    25

    Tu

  • ONT–SJU, 08/26/26 – 09/02/26: From $681
    26

    We

  • ONT–SJU, 08/27/26 – 09/03/26: From $580
    27

    Th

  • ONT–SJU, 08/28/26 – 09/04/26: From $580
    28

    Fr

  • ONT–SJU, 08/29/26 – 09/05/26: From $580
    29

    Sa

  • ONT–SJU, 08/30/26 – 09/06/26: From $671
    30

    Su

  • ONT–SJU, 08/31/26 – 09/07/26: From $891
    31

    Mo

  • ONT–SJU, 09/01/26 – 09/08/26: From $685
    01

    Tu

    SEP

  • ONT–SJU, 09/02/26 – 09/09/26: From $640
    02

    We

  • ONT–SJU, 09/03/26 – 09/10/26: From $841
    03

    Th

  • ONT–SJU, 09/04/26 – 09/11/26: From $676
    04

    Fr

  • ONT–SJU, 09/05/26 – 09/12/26: From $638
    05

    Sa

  • ONT–SJU, 09/06/26 – 09/13/26: From $753
    06

    Su

  • ONT–SJU, 09/07/26 – 09/11/26: From $481
    07

    Mo

  • ONT–SJU, 09/08/26 – 09/15/26: From $753
    08

    Tu

  • ONT–SJU, 09/09/26 – 09/16/26: From $489
    09

    We

  • ONT–SJU: cmp-view-offers-disclaimer. Find Offers
    10

    Th

  • ONT–SJU: cmp-view-offers-disclaimer. Find Offers
    11

    Fr

  • ONT–SJU, 09/12/26 – 09/19/26: From $509
    12

    Sa

    • range$481-$1,007

    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 Ontario to San Juan flights

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    keyboard_arrow_down

    Ontario (ONT)to

    San Juan (SJU)
    10/15/26 - 10/22/26

    Round trip

    Economy

    from
    $342Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    San Juan (SJU)
    10/24/26 - 10/31/26

    Round trip

    Economy

    from
    $342Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    San Juan (SJU)
    10/17/26 - 10/24/26

    Round trip

    Economy

    from
    $342Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    San Juan (SJU)
    10/19/26 - 10/26/26

    Round trip

    Economy

    from
    $342Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    San Juan (SJU)
    10/20/26 - 10/27/26

    Round trip

    Economy

    from
    $342Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    San Juan (SJU)
    09/29/26 - 10/06/26

    Round trip

    Economy

    from
    $342Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    San Juan (SJU)
    10/13/26 - 10/20/26

    Round trip

    Economy

    from
    $342Fare subject to changes
    Updated: 2 hours ago

    Ontario (ONT)to

    San Juan (SJU)
    10/23/26 - 10/30/26

    Round trip

    Economy

    from
    $342Fare subject to changes
    Updated: 2 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 Ontario to San Juan

    Looking for lower fares on your trip from Ontario 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 Ontario to San Juan