Cheap flights from Portland to Southwest Austin

View AU$150 flight on Tue, 2 Sep. 2025Opens in a new window

Popular airlines from Portland to Southwest Austin

  • 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 Portland (PDX) to Southwest Austin (AUS)

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.

American Airlines
Thu, 21 Aug. - Sun, 24 Aug.
PDX
Portland
AUS
Austin
AU$302 Return, found 10 hours ago
AU$302
Return
found 10 hours ago
Select American Airlines flight, departing Thu, 21 Aug. from Portland to Austin, returning Sun, 24 Aug., priced at AU$302 found 10 hours ago
Delta
Thu, 21 Aug. - Sun, 24 Aug.
PDX
Portland
AUS
Austin
AU$302 Return, found 10 hours ago
AU$302
Return
found 10 hours ago
Select Delta flight, departing Thu, 21 Aug. from Portland to Austin, returning Sun, 24 Aug., priced at AU$302 found 10 hours ago
American Airlines
Thu, 21 Aug. - Sun, 24 Aug.
PDX
Portland
AUS
Austin
AU$335 Return, found 10 hours ago
AU$335
Return
found 10 hours ago
Select American Airlines flight, departing Thu, 21 Aug. from Portland to Austin, returning Sun, 24 Aug., priced at AU$335 found 10 hours ago
Alaska Airlines
Thu, 21 Aug. - Sun, 24 Aug.
PDX
Portland
AUS
Austin
AU$349 Return, found 10 hours ago
AU$349
Return
found 10 hours ago
Select Alaska Airlines flight, departing Thu, 21 Aug. from Portland to Austin, returning Sun, 24 Aug., priced at AU$349 found 10 hours ago
Delta
Thu, 4 Sep. - Sun, 7 Sep.
PDX
Portland
AUS
Austin
AU$365 Return, found 10 hours ago
AU$365
Return
found 10 hours ago
Select Delta flight, departing Thu, 4 Sep. from Portland to Austin, returning Sun, 7 Sep., priced at AU$365 found 10 hours ago
United
Thu, 4 Sep. - Sun, 7 Sep.
PDX
Portland
AUS
Austin
AU$478 Return, found 10 hours ago
AU$478
Return
found 10 hours ago
Select United flight, departing Thu, 4 Sep. from Portland to Austin, returning Sun, 7 Sep., priced at AU$478 found 10 hours ago

Find the cheapest month to fly from Portland (PDX) to Austin (AUS)

September is typically the cheapest month to fly

From AU$181 - AU$277 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.