Southwest® flights from San Jose, CA to Ontario/LA from $59

Promo Code

Low fares from San Jose, CA to Ontario/LA

$

San Jose, CA (SJC)to

Ontario/LA (ONT)
Depart: 09/06/2026

One-way

Basic

From
$59
Seen: 4 hrs ago

San Jose, CA (SJC)to

Ontario/LA (ONT)
Depart: 09/05/2026

One-way

Basic

From
$59
Seen: 1 hour ago

San Jose, CA (SJC)to

Ontario/LA (ONT)
Depart: 09/11/2026

One-way

Basic

From
$59
Seen: 8 hrs ago

San Jose, CA (SJC)to

Ontario/LA (ONT)
Depart: 10/30/2026

One-way

Basic

From
$59
Seen: 1 hour ago

San Jose, CA (SJC)to

Ontario/LA (ONT)
Depart: 10/10/2026

One-way

Basic

From
$76
Seen: 18 hrs ago

San Jose, CA (SJC)to

Ontario/LA (ONT)
Depart: 09/02/2026

One-way

Basic

From
$76
Seen: 21 hrs ago

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Explore flights from San Jose, CA to Ontario/LA

Aug 2026
From$76*
Seen: 7 hrs ago
One Way/Basic
Sep 2026
From$59*
Seen: 1 hour ago
One Way/Basic
Oct 2026
From$59*
Seen: 1 hour ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $76
cmp-daily-histogram-bars-legend-max-price-aria-label $412
Displaying fares for August-2026
  • SJC–ONT, 08/02/2026: From $407
    02

    Sun

    AUG

  • SJC–ONT, 08/03/2026: From $412
    03

    Mon

  • SJC–ONT, 08/04/2026: From $412
    04

    Tue

  • SJC–ONT, 08/05/2026: From $412
    05

    Wed

  • SJC–ONT, 08/06/2026: From $412
    06

    Thu

  • SJC–ONT, 08/07/2026: From $323
    07

    Fri

  • SJC–ONT, 08/08/2026: From $323
    08

    Sat

  • SJC–ONT, 08/09/2026: From $323
    09

    Sun

  • SJC–ONT, 08/10/2026: From $323
    10

    Mon

  • SJC–ONT, 08/11/2026: From $323
    11

    Tue

  • SJC–ONT, 08/12/2026: From $323
    12

    Wed

  • SJC–ONT, 08/13/2026: From $323
    13

    Thu

  • SJC–ONT, 08/14/2026: From $210
    14

    Fri

  • SJC–ONT, 08/15/2026: From $210
    15

    Sat

  • SJC–ONT, 08/16/2026: From $210
    16

    Sun

  • SJC–ONT, 08/17/2026: From $210
    17

    Mon

  • SJC–ONT, 08/18/2026: From $210
    18

    Tue

  • SJC–ONT, 08/19/2026: From $210
    19

    Wed

  • SJC–ONT, 08/20/2026: From $210
    20

    Thu

  • SJC–ONT, 08/21/2026: From $118
    21

    Fri

  • SJC–ONT, 08/22/2026: From $76
    22

    Sat

  • SJC–ONT, 08/23/2026: From $170
    23

    Sun

  • SJC–ONT, 08/24/2026: From $76
    24

    Mon

  • SJC–ONT, 08/25/2026: From $76
    25

    Tue

  • SJC–ONT, 08/26/2026: From $76
    26

    Wed

  • SJC–ONT, 08/27/2026: From $76
    27

    Thu

  • SJC–ONT, 08/28/2026: From $118
    28

    Fri

  • SJC–ONT, 08/29/2026: From $76
    29

    Sat

  • SJC–ONT, 08/30/2026: From $170
    30

    Sun

  • SJC–ONT, 08/31/2026: From $76
    31

    Mon

  • SJC–ONT: cmp-view-offers-disclaimer. Find Offers
    01

    Tue

    SEP

    • Range$76-$412

    *Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

    Flight Details

    Departing from:
    Norman Y. Mineta San José International Airport
    Arriving at:
    LA/Ontario International Airport
    Average flight time:
    1 hour 16 minutes
    Distance:
    333 miles

    Route Information

    139† Weekly flights
    • 3‡ Nonstop flights per day Monday through Friday
    • 3‡ Nonstop flights on Saturday
    • 4‡ Nonstop flights on Sunday

    † Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

    ‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

    Questions we hear the most

    The average flight time from San Jose, CA to Ontario/LA is 1 hour 16 minutes.
    There are 139 weekly flights from San Jose, CA to Ontario/LA on Southwest Airlines.
    Yes, Southwest flies nonstop from San Jose, CA to Ontario/LA 3 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from San Jose, CA to Ontario/LA 3 times per day on Saturdays and 4 times per day on Sundays.
    To find the lowest fares by day and time to fly San Jose, CA to Ontario/LA with Southwest, check out our Low Fare Calendar.
    You can rent a car at LA/Ontario International Airport book yours with your flight.
    Yes! Flights from San Jose, CA to Ontario/LA—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
    Check the status of your upcoming Southwest flight.
    Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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