Flights from Seattle to Sydney
Find and compare Seattle to Sydney flights below: airline choices, nonstop availability, flight time and the months that usually offer the best value.
Seattle to Sydney flights overview
Fares on the Seattle to Sydney route move daily with demand, sales and seat availability, so BookingTrolley compares live prices from several suppliers in one place. Based on this route's seasonal pattern, fares average roughly A$ 1,029.04 over the year. Nov tends to be the cheapest month to fly (around A$ 857.28), while Jun is usually the most expensive at about A$ 1,276.80 — a swing of roughly 49%.
The fastest nonstop Seattle to Sydney flights cover about 12,472 km in roughly 15.5 hours. Both full-service and low-cost carriers serve this corridor; BookingTrolley compares their published fares so you can weigh price against flight time and baggage.
Frequently asked questions about flying from Seattle to Sydney
Tuesday and Wednesday are typically the cheapest days on Seattle to Sydney for Australia travellers, with Friday and Sunday often higher. BookingTrolley compares mid-week and weekend fares on SEA–SYD.
Full-service and low-cost carriers compete from Seattle (SEA) to Sydney (SYD). BookingTrolley compares published fares so Australia travellers can see which carrier is cheapest.
Economy round-trip flights on Seattle to Sydney vary by season. BookingTrolley tracks live fares on SEA–SYD so Australia travellers can compare current prices.
The flying time from Seattle to Sydney is about 15.5 hours nonstop, covering roughly 12,472 km between SEA and SYD. BookingTrolley schedules show connecting itineraries take longer depending on layover length.
Shoulder months often pair good weather with lower airfare into Sydney. BookingTrolley price trends on Seattle to Sydney show steeper rises around major Australia holiday periods.
Use BookingTrolley's flexible-date comparison for Seattle (SEA) to Sydney (SYD) to see which days cost least. Avoiding Friday–Sunday peaks is one of the fastest ways for Australia travellers to cut the ticket price.
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Explore fares from Seattle, into Sydney, and on related corridors with BookingTrolley.
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