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

ASAlaska Airlines, Inc.

Round Trip•Economy

AUS

Austin-Bergstrom International Ai

Austin, United States

SEA

Seattle–Tacoma International Airport

Seattle / Tacoma, United States

$385 USD

-54%$177 USD

Verified Nov 6, 2025 at 10:41 AM

December 2025

Today

Mon

Tue

Wed

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Sun

1$347 2$252 3$197 4$187 5$187 6$177 7$187 8$187 9$177 10$177 11$187 12$187 13$208 14$218 15$218 16$208 17$207 18$218 19$312 20$347 21$347 22$352 23$372 24$252 25$252 26$347 27$455 28$462 29$347 30$385 31$252 1 2 3 4

Limited Availability

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

Tuesday, December 23rd, 2025

10 round-trip options

Returning

Sun, Dec 28, 2025•5 Day Trip

$497 USD

Google Flights

Returning

Mon, Dec 29, 2025•6 Day Trip

$515 USD

Google Flights

Returning

Tue, Dec 30, 2025•7 Day Trip

$447 USD

Google Flights

Returning

Wed, Dec 31, 2025•8 Day Trip

$402 USD

Google Flights

Returning

Thu, Jan 1, 2026•9 Day Trip

$382 USD

Google Flights

Returning

Fri, Jan 2, 2026•10 Day Trip

$403 USD

Google Flights

Returning

Sat, Jan 3, 2026•11 Day Trip

$372 USD

Google Flights

Returning

Sun, Jan 4, 2026•12 Day Trip

$497 USD

Google Flights

Returning

Mon, Jan 5, 2026•13 Day Trip

$382 USD

Google Flights

Returning

Tue, Jan 6, 2026•14 Day Trip

$372 USD

Google Flights