Southwest® flights from Austin to San Diego from $99

Promo Code

Low fares from Austin to San Diego

$

Austin (AUS)to

San Diego (SAN)
Depart: 10/27/2026

One-way

Basic

From
$99
Seen: 15 hrs ago

Austin (AUS)to

San Diego (SAN)
Depart: 10/29/2026

One-way

Basic

From
$99
Seen: 10 hrs ago

Austin (AUS)to

San Diego (SAN)
Depart: 09/11/2026

One-way

Basic

From
$99
Seen: 18 hrs ago

Austin (AUS)to

San Diego (SAN)
Depart: 09/02/2026

One-way

Basic

From
$99
Seen: 5 hrs ago

Austin (AUS)to

San Diego (SAN)
Depart: 10/30/2026

One-way

Basic

From
$99
Seen: 10 hrs ago

Austin (AUS)to

San Diego (SAN)
Depart: 09/10/2026

One-way

Basic

From
$99
Seen: 22 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.

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Explore flights from Austin to San Diego

Jul 2026
From$349*
Seen: 21 hrs ago
One Way/Basic
Aug 2026
From$99*
Seen: 13 hrs ago
One Way/Basic
Sep 2026
From$99*
Seen: 12 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $99
cmp-daily-histogram-bars-legend-max-price-aria-label $349
Displaying fares for July-2026
  • AUS–SAN, 07/31/2026: From $349
    31

    Fri

    JUL

  • AUS–SAN, 08/01/2026: From $349
    01

    Sat

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

    Sun

  • AUS–SAN, 08/03/2026: From $349
    03

    Mon

  • AUS–SAN, 08/04/2026: From $349
    04

    Tue

  • AUS–SAN, 08/05/2026: From $349
    05

    Wed

  • AUS–SAN, 08/06/2026: From $254
    06

    Thu

  • AUS–SAN, 08/07/2026: From $249
    07

    Fri

  • AUS–SAN, 08/08/2026: From $249
    08

    Sat

  • AUS–SAN, 08/09/2026: From $249
    09

    Sun

  • AUS–SAN, 08/10/2026: From $249
    10

    Mon

  • AUS–SAN, 08/11/2026: From $249
    11

    Tue

  • AUS–SAN, 08/12/2026: From $249
    12

    Wed

  • AUS–SAN, 08/13/2026: From $249
    13

    Thu

  • AUS–SAN, 08/14/2026: From $159
    14

    Fri

  • AUS–SAN, 08/15/2026: From $159
    15

    Sat

  • AUS–SAN, 08/16/2026: From $159
    16

    Sun

  • AUS–SAN, 08/17/2026: From $159
    17

    Mon

  • AUS–SAN, 08/18/2026: From $159
    18

    Tue

  • AUS–SAN, 08/19/2026: From $159
    19

    Wed

  • AUS–SAN, 08/20/2026: From $159
    20

    Thu

  • AUS–SAN, 08/21/2026: From $159
    21

    Fri

  • AUS–SAN, 08/22/2026: From $107
    22

    Sat

  • AUS–SAN: cmp-view-offers-disclaimer. Find Offers
    23

    Sun

  • AUS–SAN, 08/24/2026: From $107
    24

    Mon

  • AUS–SAN, 08/25/2026: From $107
    25

    Tue

  • AUS–SAN, 08/26/2026: From $107
    26

    Wed

  • AUS–SAN, 08/27/2026: From $99
    27

    Thu

  • AUS–SAN, 08/28/2026: From $161
    28

    Fri

  • AUS–SAN, 08/29/2026: From $107
    29

    Sat

  • AUS–SAN, 08/30/2026: From $179
    30

    Sun

    • Range$99-$349

    *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:
    San Diego International Airport
    Average flight time:
    3 hours
    Distance:
    1164 miles

    Route Information

    156† Weekly flights
    • 4‡ Nonstop flights per day Monday through Friday
    • 2‡ Nonstop flights on Saturday
    • 3‡ 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 Austin to San Diego is 3 hours.
    There are 156 weekly flights from Austin to San Diego on Southwest Airlines.
    Yes, Southwest flies nonstop from Austin to San Diego 4 times per day from Monday through Friday.
    Yes, Southwest flies nonstop from Austin to San Diego 2 times per day on Saturdays and 3 times per day on Sundays.
    To find the lowest fares by day and time to fly Austin to San Diego with Southwest, check out our Low Fare Calendar.
    You can rent a car at San Diego International Airport book yours with your flight.
    Yes! Flights from Austin to San Diego—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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