Cheap flights from Portland to Eastern Australia

View AU$613 flight on Wed, 3 Sep. 2025Opens in a new window

Popular airlines from Portland to Eastern Australia

  • United

    United

  • Air Canada

    Air Canada

  • American Airlines

    American Airlines

  • Delta

    Delta

  • Qantas Airways

    Qantas Airways

  • Alaska Airlines

    Alaska Airlines

  • Air New Zealand

    Air New Zealand

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Cheap Flights from Portland (PDX) to Eastern Australia (MEL)

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.

Air Canada
Sun, 21 Sep. - Tue, 30 Sep.
PDX
Portland
SYD
Sydney
AU$1,206 Return, found 7 hours ago
AU$1,206
Return
found 7 hours ago
Select Air Canada flight, departing Sun, 21 Sep. from Portland to Sydney, returning Tue, 30 Sep., priced at AU$1,206 found 7 hours ago
American Airlines
Sat, 13 Sep. - Mon, 22 Sep.
PDX
Portland
SYD
Sydney
AU$1,235 Return, found 2 days ago
AU$1,235
Return
found 2 days ago
Select American Airlines flight, departing Sat, 13 Sep. from Portland to Sydney, returning Mon, 22 Sep., priced at AU$1,235 found 2 days ago
United
Sun, 21 Sep. - Tue, 30 Sep.
PDX
Portland
SYD
Sydney
AU$1,251 Return, found 7 hours ago
AU$1,251
Return
found 7 hours ago
Select United flight, departing Sun, 21 Sep. from Portland to Sydney, returning Tue, 30 Sep., priced at AU$1,251 found 7 hours ago
Delta
Sun, 21 Sep. - Tue, 30 Sep.
PDX
Portland
SYD
Sydney
AU$1,251 Return, found 7 hours ago
AU$1,251
Return
found 7 hours ago
Select Delta flight, departing Sun, 21 Sep. from Portland to Sydney, returning Tue, 30 Sep., priced at AU$1,251 found 7 hours ago
Qantas Airways
Thu, 18 Sep. - Thu, 25 Sep.
PDX
Portland
SYD
Sydney
AU$1,272 Return, found 8 hours ago
AU$1,272
Return
found 8 hours ago
Select Qantas Airways flight, departing Thu, 18 Sep. from Portland to Sydney, returning Thu, 25 Sep., priced at AU$1,272 found 8 hours ago
Alaska Airlines
Mon, 8 Sep. - Tue, 30 Sep.
PDX
Portland
BNE
Brisbane
AU$1,517 Return, found 20 hours ago
AU$1,517
Return
found 20 hours ago
Select Alaska Airlines flight, departing Mon, 8 Sep. from Portland to Brisbane, returning Tue, 30 Sep., priced at AU$1,517 found 20 hours ago

Find the cheapest month to fly from Portland (PDX) to Sydney (SYD)

September is typically the cheapest month to fly

From AU$1,193 - AU$2,671 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.