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Good to Know - Flights from Seattle to Sydney

Low Season:
June
Best time to beat the crowds
High Season:
August
Most popular time to fly
Good Deal:
$ 959.61
or less (round trip)

Cheapest Day of the Month to Book Flights



Top Tips for Finding Cheap Flights from Seattle to Sydney

Looking for cheap airfare from Seattle to Sydney? 25% of our users found round-trip tickets to Sydney for the following price or less: $ 959.61 Book at least 4 weeks before departure in order to get a below-average price. High season is considered to be August. The cheapest month to fly from Seattle to Sydney is June. Enter your preferred departure airport and travel dates into the search form above to unlock the latest Seattle to Sydney flight deals.

FAQs - Booking from Seattle to Sydney flights

How long is the flight from Seattle to Sydney?
A flight from Seattle to Sydney takes 1day.
What is the cheapest flight Seattle to Sydney?:
The cheapest flight Seattle to Sydney found on flyus.com in the last 72 hours was $959.61 round-trip.
 
Which airlines fly to Sydney?:
• Xiamen Airlines
• China Eastern Airlines
• Alaska Airlines
• Air New Zealand
• Hawaiian Airlines
• All Nippon Airways
• Emirates Airlines
• Asiana Airlines
• Virgin Australia
• American Airlines
• Hainan Airlines
• Japan Airlines International
• Cathay Pacific Airways
• Fiji Airways
• Qantas Airways
• Air Canada
• United Airlines
• Qatar Airways
• Korean Air
• China Southern Airlines
• Etihad Airways
 

Find cheap flights from Seattle to Sydney and book discounted airfare from different cities all over the United States. Explore airline ticket deals on flight routes all over the World! At Flyus, we take pride in helping you discover and book the best flight deals for your next trip at the cheapest price. We make booking flights from different departures easy and provide you with peace of mind with our Best Purchase Guarantee.

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Cheapest Flights
from Seattle, United States (SEA) to:

  • Sydney, Australia (SYD)
    Mar 02, 25 - Mar 17, 25
    $959.61
    Search

  • Sydney, Australia (SYD)
    Mar 09, 25 - Mar 17, 25
    $974.71
    Search

  • Sydney, Australia (SYD)
    Oct 30, 25 - Nov 07, 25
    $991.21
    Search

  • Sydney, Australia (SYD)
    Sep 21, 25 - Oct 07, 25
    $1,004.21
    Search

  • Sydney, Australia (SYD)
    Oct 30, 25 - Nov 06, 25
    $1,032.21
    Search