American Airlines flights from Ontario to San Juan

Recent searches for flights from Ontario to San Juan

Sep 2026
From$342*
Updated: 2 hours ago
Round tripIEconomy
Oct 2026
From$342*
Updated: 2 hours ago
Round tripIEconomy
Nov 2026
From$347*
Updated: 2 hours ago
Round tripIEconomy
cmp-daily-histogram-bars-legend-min-price-aria-label $342
cmp-daily-histogram-bars-legend-max-price-aria-label $984
Displaying fares for September-2026
  • ONT–SJU, 09/06/26 – 09/13/26: From $984
    06

    Su

    SEP

  • ONT–SJU, 09/07/26 – 09/14/26: From $984
    07

    Mo

  • ONT–SJU, 09/08/26 – 09/15/26: From $727
    08

    Tu

  • ONT–SJU, 09/09/26 – 09/16/26: From $732
    09

    We

  • ONT–SJU, 09/10/26 – 09/17/26: From $662
    10

    Th

  • ONT–SJU, 09/11/26 – 09/18/26: From $662
    11

    Fr

  • ONT–SJU, 09/12/26 – 09/19/26: From $656
    12

    Sa

  • ONT–SJU, 09/13/26 – 09/20/26: From $824
    13

    Su

  • ONT–SJU, 09/14/26 – 09/21/26: From $984
    14

    Mo

  • ONT–SJU, 09/15/26 – 09/22/26: From $656
    15

    Tu

  • ONT–SJU, 09/16/26 – 09/23/26: From $611
    16

    We

  • ONT–SJU, 09/17/26 – 09/24/26: From $698
    17

    Th

  • ONT–SJU, 09/18/26 – 09/25/26: From $606
    18

    Fr

  • ONT–SJU, 09/19/26 – 09/26/26: From $539
    19

    Sa

  • ONT–SJU, 09/20/26 – 09/27/26: From $764
    20

    Su

  • ONT–SJU, 09/21/26 – 09/28/26: From $698
    21

    Mo

  • ONT–SJU, 09/22/26 – 09/29/26: From $578
    22

    Tu

  • ONT–SJU, 09/23/26 – 09/30/26: From $451
    23

    We

  • ONT–SJU, 09/24/26 – 10/01/26: From $677
    24

    Th

  • ONT–SJU, 09/25/26 – 10/02/26: From $532
    25

    Fr

  • ONT–SJU, 09/26/26 – 10/03/26: From $388
    26

    Sa

  • ONT–SJU, 09/27/26 – 10/04/26: From $640
    27

    Su

  • ONT–SJU, 09/28/26 – 10/05/26: From $474
    28

    Mo

  • ONT–SJU, 09/29/26 – 10/06/26: From $342
    29

    Tu

  • ONT–SJU, 09/30/26 – 10/07/26: From $347
    30

    We

  • ONT–SJU, 10/01/26 – 10/08/26: From $511
    01

    Th

    OCT

  • ONT–SJU, 10/02/26 – 10/09/26: From $342
    02

    Fr

  • ONT–SJU: cmp-view-offers-disclaimer. Find Offers
    03

    Sa

  • ONT–SJU: cmp-view-offers-disclaimer. Find Offers
    04

    Su

  • ONT–SJU: cmp-view-offers-disclaimer. Find Offers
    05

    Mo

    • range$342-$984

    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

    $
    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)
    10/20/26 - 10/27/26

    Round trip

    Economy

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

    Ontario (ONT)to

    San Juan (SJU)
    10/26/26 - 11/02/26

    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)
    10/02/26 - 10/09/26

    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

    *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

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    • Extra legroom: More space with seats at the front of the Main Cabin or in exit rows.
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    American Airlines flights from Ontario to San Juan