Cheap flights from Austin to Northwest Washington

View AU$154 flight on Tue, 9 Sep. 2025Opens in a new window

Popular airlines from Austin to Northwest Washington

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

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Cheap Flights from Austin (AUS) to Northwest Washington (SEA)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Mon, 1 Sep. - Mon, 8 Sep.
AUS
Austin
SEA
Seattle
AU$425 Return, found 5 days ago
AU$425
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 1 Sep. from Austin to Seattle, returning Mon, 8 Sep., priced at AU$425 found 5 days ago
Delta
Mon, 1 Sep. - Mon, 8 Sep.
AUS
Austin
SEA
Seattle
AU$426 Return, found 5 days ago
AU$426
Return
found 5 days ago
Select Delta flight, departing Mon, 1 Sep. from Austin to Seattle, returning Mon, 8 Sep., priced at AU$426 found 5 days ago
Alaska Airlines
Mon, 1 Sep. - Mon, 8 Sep.
AUS
Austin
SEA
Seattle
AU$455 Return, found 5 days ago
AU$455
Return
found 5 days ago
Select Alaska Airlines flight, departing Mon, 1 Sep. from Austin to Seattle, returning Mon, 8 Sep., priced at AU$455 found 5 days ago
Delta
Mon, 1 Sep. - Mon, 8 Sep.
AUS
Austin
SEA
Seattle
AU$456 Return, found 5 days ago
AU$456
Return
found 5 days ago
Select Delta flight, departing Mon, 1 Sep. from Austin to Seattle, returning Mon, 8 Sep., priced at AU$456 found 5 days ago
Alaska Airlines
Wed, 19 Nov. - Sat, 29 Nov.
AUS
Austin
SEA
Seattle
AU$466 Return, found 4 days ago
AU$466
Return
found 4 days ago
Select Alaska Airlines flight, departing Wed, 19 Nov. from Austin to Seattle, returning Sat, 29 Nov., priced at AU$466 found 4 days ago
United
Mon, 1 Sep. - Mon, 8 Sep.
AUS
Austin
SEA
Seattle
AU$478 Return, found 5 days ago
AU$478
Return
found 5 days ago
Select United flight, departing Mon, 1 Sep. from Austin to Seattle, returning Mon, 8 Sep., priced at AU$478 found 5 days ago
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