Southwest® flights from Seattle/Tacoma to Austin from $119

Promo Code

Low fares from Seattle/Tacoma to Austin

$

Seattle/Tacoma (SEA)to

Austin (AUS)
Depart: 11/04/2026

One-way

Basic

From
$119
Seen: 15 hrs ago

Seattle/Tacoma (SEA)to

Austin (AUS)
Depart: 09/26/2026

One-way

Basic

From
$119
Seen: 7 hrs ago

Seattle/Tacoma (SEA)to

Austin (AUS)
Depart: 10/14/2026

One-way

Basic

From
$119
Seen: 4 hrs ago

Seattle/Tacoma (SEA)to

Austin (AUS)
Depart: 10/20/2026

One-way

Basic

From
$119
Seen: 3 hrs ago

Seattle/Tacoma (SEA)to

Austin (AUS)
Depart: 08/22/2026

One-way

Basic

From
$119
Seen: 18 hrs ago

Seattle/Tacoma (SEA)to

Austin (AUS)
Depart: 11/07/2026

One-way

Basic

From
$119
Seen: 16 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 Seattle/Tacoma to Austin

Aug 2026
From$119*
Seen: 4 hrs ago
One Way/Basic
Sep 2026
From$119*
Seen: 23 hrs ago
One Way/Basic
Oct 2026
From$119*
Seen: 4 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $119
cmp-daily-histogram-bars-legend-max-price-aria-label $444
Displaying fares for August-2026
  • SEA–AUS, 08/01/2026: From $444
    01

    Sat

    AUG

  • SEA–AUS, 08/02/2026: From $360
    02

    Sun

  • SEA–AUS: cmp-view-offers-disclaimer. Find Offers
    03

    Mon

  • SEA–AUS, 08/04/2026: From $434
    04

    Tue

  • SEA–AUS: cmp-view-offers-disclaimer. Find Offers
    05

    Wed

  • SEA–AUS, 08/06/2026: From $434
    06

    Thu

  • SEA–AUS, 08/07/2026: From $364
    07

    Fri

  • SEA–AUS, 08/08/2026: From $354
    08

    Sat

  • SEA–AUS, 08/09/2026: From $444
    09

    Sun

  • SEA–AUS, 08/10/2026: From $364
    10

    Mon

  • SEA–AUS, 08/11/2026: From $354
    11

    Tue

  • SEA–AUS, 08/12/2026: From $354
    12

    Wed

  • SEA–AUS, 08/13/2026: From $354
    13

    Thu

  • SEA–AUS, 08/14/2026: From $239
    14

    Fri

  • SEA–AUS, 08/15/2026: From $249
    15

    Sat

  • SEA–AUS, 08/16/2026: From $304
    16

    Sun

  • SEA–AUS, 08/17/2026: From $239
    17

    Mon

  • SEA–AUS, 08/18/2026: From $229
    18

    Tue

  • SEA–AUS, 08/19/2026: From $229
    19

    Wed

  • SEA–AUS, 08/20/2026: From $229
    20

    Thu

  • SEA–AUS, 08/21/2026: From $149
    21

    Fri

  • SEA–AUS, 08/22/2026: From $119
    22

    Sat

  • SEA–AUS, 08/23/2026: From $229
    23

    Sun

  • SEA–AUS, 08/24/2026: From $194
    24

    Mon

  • SEA–AUS, 08/25/2026: From $119
    25

    Tue

  • SEA–AUS: cmp-view-offers-disclaimer. Find Offers
    26

    Wed

  • SEA–AUS: cmp-view-offers-disclaimer. Find Offers
    27

    Thu

  • SEA–AUS: cmp-view-offers-disclaimer. Find Offers
    28

    Fri

  • SEA–AUS, 08/29/2026: From $119
    29

    Sat

  • SEA–AUS, 08/30/2026: From $219
    30

    Sun

  • SEA–AUS, 08/31/2026: From $159
    31

    Mon

    • Range$119-$444

    *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:
    Seattle/Tacoma International Airport
    Arriving at:
    Austin-Bergstrom International Airport
    Distance:
    1770 miles

    Route Information

    145† Weekly flights

    † 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

    There are 145 weekly flights from Seattle/Tacoma to Austin on Southwest Airlines.
    To find the lowest fares by day and time to fly Seattle/Tacoma to Austin with Southwest, check out our Low Fare Calendar.
    You can rent a car at Austin-Bergstrom International Airport book yours with your flight.
    Yes! Flights from Seattle/Tacoma to Austin—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 Seattle/Tacoma