Seattle to Sydney flights
Routavio compares airline fares from several flight booking sites. Search Seattle to Sydney to see the lowest price before you book.
Your next trip, last seen at €450
Lowest observedAlaska Airlines · 1 stop · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Airlines seen
- Alaska Airlines, ANA, Cathay Pacific, Fiji Airways, Hainan Airlines, Korean Air, Philippine Airlines, Qantas, Scoot, Singapore Airlines, Transnusa, United Airlines (12)
- Typical journey time
- 19h 57m
About this route
Explore the fares we observed from Seattle to Sydney. Prices move often, so pick your dates to see the latest options.
- Route distance
- 12,470 km
- Typical journey time
- 19h 57m
- Seen on fares with a connection
- Alaska Airlines, Qantas, United Airlines, Cathay Pacific, Korean Air, Singapore Airlines
- Alternative airports
- BFI, WSI
Route-level information; individual journeys vary.
We have not observed non-stop service on this route; the fares shown include at least one stop.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Airport to city: straight-line distance
- King County International Airport - Boeing Field (BFI) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 9 km.
- Seattle–Tacoma International Airport (SEA) → Seattle, city gazetteer reference point (47.6062, -122.3321): ≈ 18 km.
- Sydney Kingsford Smith International Airport (SYD) → Sydney, city gazetteer reference point (-33.8689, 151.2071): ≈ 9 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Frequently asked
How much was a flight from Seattle to Sydney?
A fare of €450 was seen on 19 Oct 2026. Fares change, so search your dates for the current price.
Are there direct flights from Seattle to Sydney?
Our data holds no non-stop flight from Seattle to Sydney. The fares on this page include at least one stop.
Which airlines fly from Seattle to Sydney?
Routavio has seen these carriers on the route: Alaska Airlines, ANA, Cathay Pacific, Fiji Airways, Hainan Airlines, Korean Air, Philippine Airlines, Qantas, Scoot, Singapore Airlines, Transnusa, United Airlines (12).
How long does the flight from Seattle to Sydney take?
Across the 76 fares Routavio observed, the average journey time is 24h 20m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Seattle to Sydney fares were non-stop?
None of the 77 fares we observed was non-stop; every one included at least one stop. That describes our observations, not every flight that operates.
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.