Southwest® flights from San Antonio to Ontario/LA from $189

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Low fares from San Antonio to Ontario/LA

$

San Antonio (SAT)to

Ontario/LA (ONT)
Depart: 12/02/2026

One-way

Basic

From
$189
Seen: 2 hrs ago

San Antonio (SAT)to

Ontario/LA (ONT)
Depart: 12/16/2026

One-way

Basic

From
$194
Seen: 13 hrs ago

San Antonio (SAT)to

Ontario/LA (ONT)
Depart: 01/19/2027

One-way

Basic

From
$194
Seen: 14 hrs ago

San Antonio (SAT)to

Ontario/LA (ONT)
Depart: 02/02/2027

One-way

Basic

From
$194
Seen: 21 hrs ago

San Antonio (SAT)to

Ontario/LA (ONT)
Depart: 01/06/2027

One-way

Basic

From
$194
Seen: 20 hrs ago

San Antonio (SAT)to

Ontario/LA (ONT)
Depart: 01/16/2027

One-way

Basic

From
$194
Seen: 14 hrs ago

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Explore flights from San Antonio to Ontario/LA

Nov 2026
From$294*
Seen: 2 hrs ago
One Way/Basic
Dec 2026
From$189*
Seen: 2 hrs ago
One Way/Basic
Jan 2027
From$194*
Seen: 8 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $189
cmp-daily-histogram-bars-legend-max-price-aria-label $554
Displaying fares for November-2026
  • SAT–ONT, 11/11/2026: From $554
    11

    Wed

    NOV

  • SAT–ONT, 11/12/2026: From $554
    12

    Thu

  • SAT–ONT: cmp-view-offers-disclaimer. Find Offers
    13

    Fri

  • SAT–ONT, 11/14/2026: From $554
    14

    Sat

  • SAT–ONT, 11/15/2026: From $554
    15

    Sun

  • SAT–ONT: cmp-view-offers-disclaimer. Find Offers
    16

    Mon

  • SAT–ONT, 11/17/2026: From $549
    17

    Tue

  • SAT–ONT, 11/18/2026: From $474
    18

    Wed

  • SAT–ONT, 11/19/2026: From $469
    19

    Thu

  • SAT–ONT, 11/20/2026: From $474
    20

    Fri

  • SAT–ONT, 11/21/2026: From $474
    21

    Sat

  • SAT–ONT, 11/22/2026: From $474
    22

    Sun

  • SAT–ONT, 11/23/2026: From $474
    23

    Mon

  • SAT–ONT, 11/24/2026: From $474
    24

    Tue

  • SAT–ONT, 11/25/2026: From $294
    25

    Wed

  • SAT–ONT, 11/26/2026: From $294
    26

    Thu

  • SAT–ONT, 11/27/2026: From $294
    27

    Fri

  • SAT–ONT, 11/28/2026: From $377
    28

    Sat

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

    Sun

  • SAT–ONT, 11/30/2026: From $324
    30

    Mon

  • SAT–ONT, 12/01/2026: From $289
    01

    Tue

    DEC

  • SAT–ONT, 12/02/2026: From $189
    02

    Wed

  • SAT–ONT, 12/03/2026: From $214
    03

    Thu

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

    Fri

  • SAT–ONT, 12/05/2026: From $194
    05

    Sat

  • SAT–ONT: cmp-view-offers-disclaimer. Find Offers
    06

    Sun

  • SAT–ONT, 12/07/2026: From $214
    07

    Mon

  • SAT–ONT: cmp-view-offers-disclaimer. Find Offers
    08

    Tue

  • SAT–ONT: cmp-view-offers-disclaimer. Find Offers
    09

    Wed

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

    Thu

    • Range$189-$554

    *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:
    San Antonio International Airport
    Arriving at:
    LA/Ontario International Airport
    Distance:
    1166 miles

    Questions we hear the most

    There are 149 weekly flights from San Antonio to Ontario/LA on Southwest Airlines.
    To find the lowest fares by day and time to fly San Antonio 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 Antonio 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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