Southwest® flights from Austin to Seattle/Tacoma from $155

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Low fares from Austin to Seattle/Tacoma

$

Austin (AUS)to

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

One-way

Basic

From
$155
Seen: 21 hrs ago

Austin (AUS)to

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

One-way

Basic

From
$155
Seen: 19 hrs ago

Austin (AUS)to

Seattle/Tacoma (SEA)
Depart: 12/30/2026

One-way

Basic

From
$155
Seen: 19 hrs ago

Austin (AUS)to

Seattle/Tacoma (SEA)
Depart: 10/28/2026

One-way

Basic

From
$155
Seen: 22 hrs ago

Austin (AUS)to

Seattle/Tacoma (SEA)
Depart: 11/03/2026

One-way

Basic

From
$155
Seen: 22 hrs ago

Austin (AUS)to

Seattle/Tacoma (SEA)
Depart: 11/10/2026

One-way

Basic

From
$155
Seen: 20 hrs ago

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Explore flights from Austin to Seattle/Tacoma

Oct 2026
From$155*
Seen: 19 hrs ago
One Way/Basic
Nov 2026
From$155*
Seen: 22 hrs ago
One Way/Basic
Dec 2026
From$155*
Seen: 19 hrs ago
One Way/Basic
cmp-daily-histogram-bars-legend-min-price-aria-label $155
cmp-daily-histogram-bars-legend-max-price-aria-label $469
Displaying fares for October-2026
  • AUS–SEA, 10/03/2026: From $469
    03

    Sat

    OCT

  • AUS–SEA, 10/04/2026: From $469
    04

    Sun

  • AUS–SEA, 10/05/2026: From $469
    05

    Mon

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

    Tue

  • AUS–SEA, 10/07/2026: From $469
    07

    Wed

  • AUS–SEA, 10/08/2026: From $469
    08

    Thu

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

    Fri

  • AUS–SEA: cmp-view-offers-disclaimer. Find Offers
    10

    Sat

  • AUS–SEA, 10/11/2026: From $384
    11

    Sun

  • AUS–SEA: cmp-view-offers-disclaimer. Find Offers
    12

    Mon

  • AUS–SEA, 10/13/2026: From $374
    13

    Tue

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

    Wed

  • AUS–SEA, 10/15/2026: From $374
    15

    Thu

  • AUS–SEA, 10/16/2026: From $374
    16

    Fri

  • AUS–SEA, 10/17/2026: From $179
    17

    Sat

  • AUS–SEA, 10/18/2026: From $259
    18

    Sun

  • AUS–SEA, 10/19/2026: From $189
    19

    Mon

  • AUS–SEA, 10/20/2026: From $165
    20

    Tue

  • AUS–SEA, 10/21/2026: From $155
    21

    Wed

  • AUS–SEA, 10/22/2026: From $179
    22

    Thu

  • AUS–SEA, 10/23/2026: From $162
    23

    Fri

  • AUS–SEA, 10/24/2026: From $179
    24

    Sat

  • AUS–SEA, 10/25/2026: From $284
    25

    Sun

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

    Mon

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

    Tue

  • AUS–SEA, 10/28/2026: From $155
    28

    Wed

  • AUS–SEA, 10/29/2026: From $179
    29

    Thu

  • AUS–SEA, 10/30/2026: From $186
    30

    Fri

  • AUS–SEA: cmp-view-offers-disclaimer. Find Offers
    31

    Sat

  • AUS–SEA, 11/01/2026: From $234
    01

    Sun

    NOV

  • AUS–SEA, 11/02/2026: From $189
    02

    Mon

    • Range$155-$469

    *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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