Alaska Airlines Cheap Flights from Seattle to Australia
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Deals on flights from Seattle to Australia.*
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Seattle (SEA)to
Sydney (SYD)Depart: Nov 16, 2026
From
$660
Seen: 16 hours ago
One-way
Saver
Seattle (SEA)to
Sydney (SYD)Depart: Nov 25, 2026
From
$660
Seen: 16 hours ago
One-way
Saver
Seattle (SEA)to
Sydney (SYD)Depart: Nov 23, 2026
From
$660
Seen: 16 hours ago
One-way
Saver
Seattle (SEA)to
Sydney (SYD)Depart: Nov 30, 2026
From
$675
Seen: 16 hours ago
One-way
Saver
Seattle (SEA)to
Sydney (SYD)Depart: Dec 2, 2026
From
$675
Seen: 16 hours ago
One-way
Saver
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.
One-way low-fare flights Seattle to Australia.*
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From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Seattle (SEA) | Sydney (SYD) | One-way | Saver | Depart: Apr 13, 2027 | From $550 Seen: 16 hours ago | |
| Seattle (SEA) | Sydney (SYD) | One-way | Saver | Depart: Apr 7, 2027 | From $550 Seen: 16 hours ago | |
| Seattle (SEA) | Sydney (SYD) | One-way | Saver | Depart: Apr 14, 2027 | From $550 Seen: 16 hours ago | |
| Seattle (SEA) | Sydney (SYD) | One-way | Saver | Depart: Feb 14, 2027 | From $550 Seen: 16 hours ago | |
| Seattle (SEA) | Sydney (SYD) | One-way | Saver | Depart: Apr 6, 2027 | From $550 Seen: 16 hours ago | |
| Seattle (SEA) | Sydney (SYD) | One-way | Saver | Depart: Mar 3, 2027 | From $550 Seen: 16 hours ago |
*Displayed prices have been available within the past 24 hours and may not be available at the time of booking. Fares listed may be Saver fares, which is our most restrictive fare option and subject to additional restrictions. For roundtrip journeys, the price displayed—available within the past 24 hours—is the aggregate of the lowest available fare each way. Additional baggage charges and fees for optional products and services may apply. Other terms and conditions may apply.