Southwest® flights from Austin to Ontario/LA from $138

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Low fares from Austin to Ontario/LA

$

Austin (AUS)to

Ontario/LA (ONT)
Depart: 12/15/2026

One-way

Basic

From
$138
Seen: 23 hrs ago

Austin (AUS)to

Ontario/LA (ONT)
Depart: 01/27/2027

One-way

Basic

From
$138
Seen: 21 hrs ago

Austin (AUS)to

Ontario/LA (ONT)
Depart: 12/05/2026

One-way

Basic

From
$160
Seen: 20 hrs ago

Austin (AUS)to

Ontario/LA (ONT)
Depart: 02/17/2027

One-way

Basic

From
$165
Seen: 18 hrs ago

Austin (AUS)to

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

One-way

Basic

From
$165
Seen: 5 hrs ago

Austin (AUS)to

Ontario/LA (ONT)
Depart: 01/20/2027

One-way

Basic

From
$165
Seen: 4 hrs ago

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Explore flights from Austin to Ontario/LA

Nov 2026
From$317*
Seen: 17 hrs ago
One Way/Basic
Dec 2026
From$138*
Seen: 23 hrs ago
One Way/Basic
Jan 2027
From$138*
Seen: 21 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $160
cmp-daily-histogram-bars-legend-max-price-aria-label $499
Displaying fares for November-2026
  • AUS–ONT, 11/11/2026: From $499
    11

    Wed

    NOV

  • AUS–ONT, 11/12/2026: From $494
    12

    Thu

  • AUS–ONT, 11/13/2026: From $494
    13

    Fri

  • AUS–ONT: cmp-view-offers-disclaimer. Find Offers
    14

    Sat

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    15

    Sun

  • AUS–ONT, 11/16/2026: From $499
    16

    Mon

  • AUS–ONT, 11/17/2026: From $499
    17

    Tue

  • AUS–ONT: cmp-view-offers-disclaimer. Find Offers
    18

    Wed

  • AUS–ONT, 11/19/2026: From $442
    19

    Thu

  • AUS–ONT, 11/20/2026: From $437
    20

    Fri

  • AUS–ONT, 11/21/2026: From $442
    21

    Sat

  • AUS–ONT: cmp-view-offers-disclaimer. Find Offers
    22

    Sun

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    23

    Mon

  • AUS–ONT, 11/24/2026: From $322
    24

    Tue

  • AUS–ONT, 11/25/2026: From $322
    25

    Wed

  • AUS–ONT, 11/26/2026: From $322
    26

    Thu

  • AUS–ONT, 11/27/2026: From $317
    27

    Fri

  • AUS–ONT, 11/28/2026: From $352
    28

    Sat

  • AUS–ONT, 11/29/2026: From $419
    29

    Sun

  • AUS–ONT, 11/30/2026: From $352
    30

    Mon

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

    Tue

    DEC

  • AUS–ONT: cmp-view-offers-disclaimer. Find Offers
    02

    Wed

  • AUS–ONT, 12/03/2026: From $185
    03

    Thu

  • AUS–ONT, 12/04/2026: From $200
    04

    Fri

  • AUS–ONT, 12/05/2026: From $160
    05

    Sat

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

    Sun

  • AUS–ONT, 12/07/2026: From $195
    07

    Mon

  • AUS–ONT, 12/08/2026: From $165
    08

    Tue

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

    Wed

  • AUS–ONT, 12/10/2026: From $195
    10

    Thu

    • Range$160-$499

    *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:
    Austin-Bergstrom International Airport
    Arriving at:
    LA/Ontario International Airport
    Average flight time:
    3 hours 3 minutes
    Distance:
    1196 miles

    Questions we hear the most

    The average flight time from Austin to Ontario/LA is 3 hours 3 minutes.
    There are 152 weekly flights from Austin to Ontario/LA on Southwest Airlines.
    Yes, Southwest flies nonstop from Austin to Ontario/LA once per day from Monday through Friday.
    Yes, Southwest flies nonstop from Austin to Ontario/LA once per day on Sundays.
    To find the lowest fares by day and time to fly Austin 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 Austin 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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