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: 12/10/2026

One-way

Basic

From
$59
Seen: 20 hrs ago

San Jose, CA (SJC)to

Ontario/LA (ONT)
Depart: 11/03/2026

One-way

Basic

From
$59
Seen: 17 hrs ago

San Jose, CA (SJC)to

Ontario/LA (ONT)
Depart: 11/18/2026

One-way

Basic

From
$59
Seen: 17 hrs ago

San Jose, CA (SJC)to

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

One-way

Basic

From
$59
Seen: 19 hrs ago

San Jose, CA (SJC)to

Ontario/LA (ONT)
Depart: 10/27/2026

One-way

Basic

From
$59
Seen: 13 hrs ago

San Jose, CA (SJC)to

Ontario/LA (ONT)
Depart: 10/14/2026

One-way

Basic

From
$59
Seen: 22 hrs ago

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Explore flights from San Jose, CA to Ontario/LA

Sep 2026
From$59*
Seen: 2 hrs ago
One Way/Basic
Oct 2026
From$59*
Seen: 17 hrs ago
One Way/Basic
Nov 2026
From$59*
Seen: 21 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $59
cmp-daily-histogram-bars-legend-max-price-aria-label $422
Displaying fares for September-2026
  • SJC–ONT, 09/10/2026: From $422
    10

    Thu

    SEP

  • SJC–ONT, 09/11/2026: From $422
    11

    Fri

  • SJC–ONT, 09/12/2026: From $422
    12

    Sat

  • SJC–ONT, 09/13/2026: From $422
    13

    Sun

  • SJC–ONT, 09/14/2026: From $422
    14

    Mon

  • SJC–ONT, 09/15/2026: From $422
    15

    Tue

  • SJC–ONT, 09/16/2026: From $333
    16

    Wed

  • SJC–ONT, 09/17/2026: From $333
    17

    Thu

  • SJC–ONT, 09/18/2026: From $333
    18

    Fri

  • SJC–ONT, 09/19/2026: From $333
    19

    Sat

  • SJC–ONT, 09/20/2026: From $333
    20

    Sun

  • SJC–ONT, 09/21/2026: From $333
    21

    Mon

  • SJC–ONT, 09/22/2026: From $333
    22

    Tue

  • SJC–ONT, 09/23/2026: From $220
    23

    Wed

  • SJC–ONT, 09/24/2026: From $220
    24

    Thu

  • SJC–ONT, 09/25/2026: From $220
    25

    Fri

  • SJC–ONT, 09/26/2026: From $220
    26

    Sat

  • SJC–ONT, 09/27/2026: From $220
    27

    Sun

  • SJC–ONT, 09/28/2026: From $220
    28

    Mon

  • SJC–ONT: cmp-view-offers-disclaimer. Find Offers
    29

    Tue

  • SJC–ONT, 09/30/2026: From $59
    30

    Wed

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

    Thu

    OCT

  • SJC–ONT, 10/02/2026: From $86
    02

    Fri

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

    Sat

  • SJC–ONT, 10/04/2026: From $180
    04

    Sun

  • SJC–ONT, 10/05/2026: From $59
    05

    Mon

  • SJC–ONT, 10/06/2026: From $59
    06

    Tue

  • SJC–ONT: cmp-view-offers-disclaimer. Find Offers
    07

    Wed

  • SJC–ONT, 10/08/2026: From $59
    08

    Thu

  • SJC–ONT, 10/09/2026: From $96
    09

    Fri

    • Range$59-$422

    *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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