Book a trip from Seattle to Sydney with Cathay Pacific , fares from USD1,041
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1 Passenger(s), Economy
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Fly Cathay Pacific from Seattle (SEA) to Sydney (SYD). Enjoy award-winning service, entertainment, and an enhanced menu for Premium Economy and Business Class during your flight. Book direct to secure our best fare and join as a Cathay Pacific Member to earn Status Points or Miles.
Deals on Seattle (SEA) to Sydney (SYD) flights
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Book flights to Sydney SYD
From | To | Fare Type | Dates | Price | |
|---|---|---|---|---|---|
| Seattle (SEA) | Sydney (SYD) | Round-trip / Economy | 15/08/2026 - 25/08/2026 | From USD1,166 Seen 1 day ago | |
| Seattle (SEA) | Sydney (SYD) | Round-trip / Economy | 20/05/2026 - 27/05/2026 | From USD1,466 Seen 1 day ago | |
| Seattle (SEA) | Sydney (SYD) | Round-trip / Economy | 28/02/2026 - 07/03/2026 | From USD1,305 Seen 2 hours ago |
Lowest fares on round-trip flights found by other customers on Cathay Pacific’s official website in the last 48 hours. All fares are subject to change at any time. Other Cathay Pacific Terms & Conditions apply.
Book Business Class flights to Sydney - selected offers
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Lowest fares on flights found by other customers on Cathay Pacific’s official website in the last 48 hours. All fares are subject to change at any time. Other Cathay Pacific Terms & Conditions apply.