Cheap flights from Seattle to Eastern Australia

View AU$558 flight on Tue, 26 Aug. 2025Opens in a new window

Popular airlines from Seattle to Eastern Australia

  • Air Canada

    Air Canada

  • United

    United

  • Emirates

    Emirates

  • Air New Zealand

    Air New Zealand

  • Qantas Airways

    Qantas Airways

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

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Cheap Flights from Seattle (SEA) 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
Tue, 19 Aug. - Sun, 14 Sep.
SEA
Seattle
SYD
Sydney
AU$1,173 Return, found 6 days ago
AU$1,173
Return
found 6 days ago
Select Air Canada flight, departing Tue, 19 Aug. from Seattle to Sydney, returning Sun, 14 Sep., priced at AU$1,173 found 6 days ago
American Airlines
Mon, 22 Sep. - Fri, 17 Oct.
PAE
Seattle
SYD
Sydney
AU$1,233 Return, found 22 hours ago
AU$1,233
Return
found 22 hours ago
Select American Airlines flight, departing Mon, 22 Sep. from Seattle to Sydney, returning Fri, 17 Oct., priced at AU$1,233 found 22 hours ago
Qantas Airways
Fri, 12 Sep. - Fri, 10 Oct.
SEA
Seattle
SYD
Sydney
AU$1,235 Return, found 1 day ago
AU$1,235
Return
found 1 day ago
Select Qantas Airways flight, departing Fri, 12 Sep. from Seattle to Sydney, returning Fri, 10 Oct., priced at AU$1,235 found 1 day ago
United
Mon, 22 Sep. - Fri, 17 Oct.
SEA
Seattle
SYD
Sydney
AU$1,259 Return, found 22 hours ago
AU$1,259
Return
found 22 hours ago
Select United flight, departing Mon, 22 Sep. from Seattle to Sydney, returning Fri, 17 Oct., priced at AU$1,259 found 22 hours ago
Delta
Wed, 24 Sep. - Wed, 21 Jan.
SEA
Seattle
SYD
Sydney
AU$1,259 Return, found 13 hours ago
AU$1,259
Return
found 13 hours ago
Select Delta flight, departing Wed, 24 Sep. from Seattle to Sydney, returning Wed, 21 Jan., priced at AU$1,259 found 13 hours ago
All Nippon Airways
Tue, 19 Aug. - Tue, 9 Sep.
SEA
Seattle
SYD
Sydney
AU$1,312 Return, found 6 days ago
AU$1,312
Return
found 6 days ago
Select All Nippon Airways flight, departing Tue, 19 Aug. from Seattle to Sydney, returning Tue, 9 Sep., priced at AU$1,312 found 6 days ago

Find the cheapest month to fly from Seattle (SEA) to Sydney (SYD)

February is typically the cheapest month to fly

From AU$1,158 - AU$1,959 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.