Seattle / Tacoma (SEA) to Sydney (SYD) flight deal in economy from $978
SEASeattle–Tacoma International Airport
Seattle / Tacoma, United States
SYDSydney Airport
Sydney, Australia
$1,342 USD
-27%$978 USD
Verified about 8 hours agoDecember 2026
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Good Availability
51% of dates checked are available within 10% of the lowest price
Friday, December 18th, 2026
10 round-trip options
Returning
Wed, Dec 23, 2026•5 Day Trip
$3,063 USD
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Thu, Dec 24, 2026•6 Day Trip
$3,113 USD
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Fri, Dec 25, 2026•7 Day Trip
$3,113 USD
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Sat, Dec 26, 2026•8 Day Trip
$3,113 USD
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Sun, Dec 27, 2026•9 Day Trip
$3,063 USD
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Mon, Dec 28, 2026•10 Day Trip
$3,084 USD
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Tue, Dec 29, 2026•11 Day Trip
$3,236 USD
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Wed, Dec 30, 2026•12 Day Trip
$4,268 USD
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Thu, Dec 31, 2026•13 Day Trip
$3,211 USD
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Fri, Jan 1, 2027•14 Day Trip
$4,843 USD