Southwest® flights from Austin to Seattle/Tacoma from $149

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Low fares from Austin to Seattle/Tacoma

$

Austin (AUS)to

Seattle/Tacoma (SEA)
Depart: 11/18/2026

One-way

Basic

From
$149
Seen: 17 hrs ago

Austin (AUS)to

Seattle/Tacoma (SEA)
Depart: 10/05/2026

One-way

Basic

From
$159
Seen: 23 hrs ago

Austin (AUS)to

Seattle/Tacoma (SEA)
Depart: 10/31/2026

One-way

Basic

From
$159
Seen: 16 hrs ago

Austin (AUS)to

Seattle/Tacoma (SEA)
Depart: 11/13/2026

One-way

Basic

From
$163
Seen: 16 hrs ago

Austin (AUS)to

Seattle/Tacoma (SEA)
Depart: 10/30/2026

One-way

Basic

From
$163
Seen: 17 hrs ago

Austin (AUS)to

Seattle/Tacoma (SEA)
Depart: 10/21/2026

One-way

Basic

From
$179
Seen: 7 hrs ago

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Explore flights from Austin to Seattle/Tacoma

Sep 2026
From$239*
Seen: 22 hrs ago
One Way/Basic
Oct 2026
From$159*
Seen: 23 hrs ago
One Way/Basic
Nov 2026
From$149*
Seen: 17 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $159
cmp-daily-histogram-bars-legend-max-price-aria-label $449
Displaying fares for September-2026
  • AUS–SEA, 09/12/2026: From $439
    12

    Sat

    SEP

  • AUS–SEA, 09/13/2026: From $449
    13

    Sun

  • AUS–SEA, 09/14/2026: From $439
    14

    Mon

  • AUS–SEA, 09/15/2026: From $439
    15

    Tue

  • AUS–SEA: cmp-view-offers-disclaimer. Find Offers
    16

    Wed

  • AUS–SEA, 09/17/2026: From $439
    17

    Thu

  • AUS–SEA, 09/18/2026: From $374
    18

    Fri

  • AUS–SEA, 09/19/2026: From $374
    19

    Sat

  • AUS–SEA, 09/20/2026: From $374
    20

    Sun

  • AUS–SEA, 09/21/2026: From $374
    21

    Mon

  • AUS–SEA, 09/22/2026: From $374
    22

    Tue

  • AUS–SEA, 09/23/2026: From $374
    23

    Wed

  • AUS–SEA, 09/24/2026: From $374
    24

    Thu

  • AUS–SEA, 09/25/2026: From $249
    25

    Fri

  • AUS–SEA, 09/26/2026: From $249
    26

    Sat

  • AUS–SEA, 09/27/2026: From $249
    27

    Sun

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

    Mon

  • AUS–SEA, 09/29/2026: From $249
    29

    Tue

  • AUS–SEA, 09/30/2026: From $239
    30

    Wed

  • AUS–SEA, 10/01/2026: From $249
    01

    Thu

    OCT

  • AUS–SEA, 10/02/2026: From $191
    02

    Fri

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

    Sat

  • AUS–SEA, 10/04/2026: From $219
    04

    Sun

  • AUS–SEA, 10/05/2026: From $159
    05

    Mon

  • AUS–SEA, 10/06/2026: From $181
    06

    Tue

  • AUS–SEA: cmp-view-offers-disclaimer. Find Offers
    07

    Wed

  • AUS–SEA, 10/08/2026: From $229
    08

    Thu

  • AUS–SEA, 10/09/2026: From $239
    09

    Fri

  • AUS–SEA, 10/10/2026: From $191
    10

    Sat

  • AUS–SEA, 10/11/2026: From $229
    11

    Sun

    • Range$159-$449

    *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:
    Seattle/Tacoma International Airport
    Distance:
    1770 miles

    Route Information

    143† 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 143 weekly flights from Austin to Seattle/Tacoma on Southwest Airlines.
    To find the lowest fares by day and time to fly Austin to Seattle/Tacoma with Southwest, check out our Low Fare Calendar.
    You can rent a car at Seattle/Tacoma International Airport book yours with your flight.
    Yes! Flights from Austin to Seattle/Tacoma—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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