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Seattle to Sydney takes around 19 to 23 hours with one connection. The distance between Seattle and Sydney is roughly 7,749 miles (12,471 kilometers). No airline currently operates nonstop service on this route. Most travelers fly out of Seattle-Tacoma International Airport (SEA) and connect through Asian or European hub cities to reach Sydney Kingsford Smith Airport (SYD). Qantas, United Airlines, Air New Zealand offer connecting service with good schedules. Sydney is 19 hours ahead of Seattle. Plan for the time difference when booking your connection times.
Flights from Seattle to Sydney require at least one connection. Total travel time runs 19 to 23 hours depending on your routing.
Qantas, United Airlines offer good connection options with reasonable layover times in their hub cities.
Shorter layovers of 2 to 3 hours keep total travel time down. Longer connections sometimes offer better fares or more comfortable schedules.
Sydney is 19 hours ahead of Seattle. Plan your arrival time carefully to minimize jet lag impact.
Eastbound flights typically depart in the afternoon or evening and arrive the next day. Westbound return flights often land the same calendar day you depart.
Book 6 to 8 weeks ahead for the best fares. Shoulder season months often offer better deals than peak travel periods.
How long is the flight from Seattle to Sydney?
Flights from Seattle to Sydney take 19 to 23 hours with one connection. No airline currently operates nonstop service on this route.
How far is it from Seattle to Sydney?
The distance from Seattle to Sydney is approximately 7,749 miles (12,471 kilometers). This transoceanic route crosses multiple time zones.
What is the time difference between Seattle and Sydney?
Sydney is 19 hours ahead of Seattle. The time difference may shift by one hour during daylight saving transitions if one location observes it and the other does not.
Are there direct flights from Seattle to Sydney?
No, there are no nonstop flights from Seattle to Sydney. All flights require at least one connection through Asian, Middle Eastern, or European hub cities.
Which airlines fly from Seattle to Sydney?
Qantas, United Airlines, Air New Zealand, Delta Air Lines operate flights from Seattle to Sydney. Qantas typically offers the most weekly departures on this route.
Planning beyond this route? Explore more flight times, distances, and travel durations using our tools below. Start with our Flight Time Calculator to estimate journey times worldwide, or browse average travel times from your departure city using the Seattle Flight Times.
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