Seattle / Tacoma (SEA) to Austin (AUS) flight deal from $177 USD in economy class

ASAlaska Airlines, Inc.

Round Trip•Economy

SEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

AUS

Austin-Bergstrom International Ai

Austin, United States

$385 USD

-54%$177 USD

Verified Nov 6, 2025 at 10:41 AM

December 2025

Today

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1$216 2$251 3$177 4$187 5$187 6$177 7$187 8$187 9$177 10$177 11$187 12$187 13$208 14$262 15$262 16$252 17$252 18$283 19$377 20$345 21$355 22$283 23$252 24$212 25$208 26$208 27$397 28$302 29$263 30$260 31$207 1 2 3 4

Limited Availability

13% of dates checked are available within 10% of the lowest price

Monday, December 29th, 2025

10 round-trip options

Returning

Sat, Jan 3, 2026•5 Day Trip

$490 USD

Google Flights

Returning

Sun, Jan 4, 2026•6 Day Trip

$402 USD

Google Flights

Returning

Mon, Jan 5, 2026•7 Day Trip

$294 USD

Google Flights

Returning

Tue, Jan 6, 2026•8 Day Trip

$263 USD

Google Flights

Returning

Wed, Jan 7, 2026•9 Day Trip

$293 USD

Google Flights

Returning

Thu, Jan 8, 2026•10 Day Trip

$330 USD

Google Flights

Returning

Fri, Jan 9, 2026•11 Day Trip

$330 USD

Google Flights

Returning

Sat, Jan 10, 2026•12 Day Trip

$341 USD

Google Flights

Returning

Sun, Jan 11, 2026•13 Day Trip

$351 USD

Google Flights

Returning

Mon, Jan 12, 2026•14 Day Trip

$330 USD

Google Flights