Southwest® flights from Ontario/LA to San Jose, CA from $114

Promo Code

Low fares from Ontario/LA to San Jose, CA

$

Ontario/LA (ONT)to

San Jose, CA (SJC)
Depart: 11/11/2026

One-way

Basic

From
$114
Seen: 20 hrs ago

Ontario/LA (ONT)to

San Jose, CA (SJC)
Depart: 12/02/2026

One-way

Basic

From
$114
Seen: 9 hrs ago

Ontario/LA (ONT)to

San Jose, CA (SJC)
Depart: 12/16/2026

One-way

Basic

From
$114
Seen: 7 hrs ago

Ontario/LA (ONT)to

San Jose, CA (SJC)
Depart: 12/08/2026

One-way

Basic

From
$114
Seen: 1 hour ago

Ontario/LA (ONT)to

San Jose, CA (SJC)
Depart: 10/27/2026

One-way

Basic

From
$114
Seen: 58 minutes ago

Ontario/LA (ONT)to

San Jose, CA (SJC)
Depart: 11/10/2026

One-way

Basic

From
$114
Seen: 17 hrs ago

Looking for more low-fare flights?

Check out the Low Fare Calendar to find a fare that works for you. Just choose the month you want to depart and return, and we’ll show you the best fares available.

Find low fares

Explore flights from Ontario/LA to San Jose, CA

Sep 2026
From$230*
Seen: 17 hrs ago
One Way/Basic
Oct 2026
From$114*
Seen: 58 minutes ago
One Way/Basic
Nov 2026
From$114*
Seen: 13 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $120
cmp-daily-histogram-bars-legend-max-price-aria-label $432
Displaying fares for September-2026
  • ONT–SJC, 09/17/2026: From $432
    17

    Thu

    SEP

  • ONT–SJC, 09/18/2026: From $432
    18

    Fri

  • ONT–SJC: cmp-view-offers-disclaimer. Find Offers
    19

    Sat

  • ONT–SJC, 09/20/2026: From $432
    20

    Sun

  • ONT–SJC, 09/21/2026: From $432
    21

    Mon

  • ONT–SJC, 09/22/2026: From $427
    22

    Tue

  • ONT–SJC, 09/23/2026: From $338
    23

    Wed

  • ONT–SJC, 09/24/2026: From $343
    24

    Thu

  • ONT–SJC, 09/25/2026: From $343
    25

    Fri

  • ONT–SJC, 09/26/2026: From $343
    26

    Sat

  • ONT–SJC, 09/27/2026: From $343
    27

    Sun

  • ONT–SJC: cmp-view-offers-disclaimer. Find Offers
    28

    Mon

  • ONT–SJC, 09/29/2026: From $338
    29

    Tue

  • ONT–SJC, 09/30/2026: From $230
    30

    Wed

  • ONT–SJC, 10/01/2026: From $230
    01

    Thu

    OCT

  • ONT–SJC, 10/02/2026: From $230
    02

    Fri

  • ONT–SJC, 10/03/2026: From $230
    03

    Sat

  • ONT–SJC, 10/04/2026: From $230
    04

    Sun

  • ONT–SJC, 10/05/2026: From $166
    05

    Mon

  • ONT–SJC, 10/06/2026: From $144
    06

    Tue

  • ONT–SJC, 10/07/2026: From $120
    07

    Wed

  • ONT–SJC, 10/08/2026: From $138
    08

    Thu

  • ONT–SJC, 10/09/2026: From $155
    09

    Fri

  • ONT–SJC, 10/10/2026: From $120
    10

    Sat

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

    Sun

  • ONT–SJC, 10/12/2026: From $190
    12

    Mon

  • ONT–SJC, 10/13/2026: From $120
    13

    Tue

  • ONT–SJC, 10/14/2026: From $120
    14

    Wed

  • ONT–SJC, 10/15/2026: From $138
    15

    Thu

  • ONT–SJC, 10/16/2026: From $155
    16

    Fri

    • Range$120-$432

    *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:
    LA/Ontario International Airport
    Arriving at:
    Norman Y. Mineta San José International Airport
    Average flight time:
    1 hour 14 minutes
    Distance:
    333 miles

    Route Information

    142† 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 Ontario/LA to San Jose, CA is 1 hour 14 minutes.
    There are 142 weekly flights from Ontario/LA to San Jose, CA on Southwest Airlines.
    Yes, Southwest flies nonstop from Ontario/LA to San Jose, CA 3 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Ontario/LA to San Jose, CA 3 times per day on Saturdays and 4 times per day on Sundays.
    To find the lowest fares by day and time to fly Ontario/LA to San Jose, CA with Southwest, check out our Low Fare Calendar.
    You can rent a car at Norman Y. Mineta San José International Airport book yours with your flight.
    Yes! Flights from Ontario/LA to San Jose, CA—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.

    Explore Flights from Other Popular Origins

    Popular Flights from Ontario/LA