Cheap flights from Seattle to Greater Western Sydney

View AU$556 flight on Thu, 14 Aug. 2025Opens in a new window

Popular airlines from Seattle to Greater Western Sydney

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • United

    United

  • American Airlines

    American Airlines

  • Air Canada

    Air Canada

  • Air New Zealand

    Air New Zealand

  • Emirates

    Emirates

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Cheap Flights from Seattle (SEA) to Greater Western Sydney (SYD)

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, 10 Aug. - Thu, 14 Aug.
SEA
Seattle
SYD
Sydney
AU$1,164 Return, found 2 days ago
AU$1,164
Return
found 2 days ago
Select Air Canada flight, departing Sun, 10 Aug. from Seattle to Sydney, returning Thu, 14 Aug., priced at AU$1,164 found 2 days ago
American Airlines
Fri, 12 Sep. - Fri, 19 Sep.
PAE
Seattle
SYD
Sydney
AU$1,221 Return, found 4 hours ago
AU$1,221
Return
found 4 hours ago
Select American Airlines flight, departing Fri, 12 Sep. from Seattle to Sydney, returning Fri, 19 Sep., priced at AU$1,221 found 4 hours ago
Qantas Airways
Fri, 12 Sep. - Fri, 10 Oct.
SEA
Seattle
SYD
Sydney
AU$1,235 Return, found 4 days ago
AU$1,235
Return
found 4 days ago
Select Qantas Airways flight, departing Fri, 12 Sep. from Seattle to Sydney, returning Fri, 10 Oct., priced at AU$1,235 found 4 days ago
United
Fri, 12 Sep. - Fri, 19 Sep.
SEA
Seattle
SYD
Sydney
AU$1,247 Return, found 4 hours ago
AU$1,247
Return
found 4 hours ago
Select United flight, departing Fri, 12 Sep. from Seattle to Sydney, returning Fri, 19 Sep., priced at AU$1,247 found 4 hours ago
Delta
Sat, 27 Sep. - Sat, 11 Oct.
SEA
Seattle
SYD
Sydney
AU$1,247 Return, found 4 hours ago
AU$1,247
Return
found 4 hours ago
Select Delta flight, departing Sat, 27 Sep. from Seattle to Sydney, returning Sat, 11 Oct., priced at AU$1,247 found 4 hours ago
All Nippon Airways
Sun, 30 Nov. - Sun, 7 Dec.
SEA
Seattle
SYD
Sydney
AU$1,349 Return, found 4 hours ago
AU$1,349
Return
found 4 hours ago
Select All Nippon Airways flight, departing Sun, 30 Nov. from Seattle to Sydney, returning Sun, 7 Dec., priced at AU$1,349 found 4 hours 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.