How far is Sydney from Seattle, WA?
The distance between Seattle (Seattle Boeing Field) and Sydney (Sydney Airport) is 7742 miles / 12460 kilometers / 6728 nautical miles.
Seattle Boeing Field – Sydney Airport
Search flights
Distance from Seattle to Sydney
There are several ways to calculate the distance from Seattle to Sydney. Here are two standard methods:
Vincenty's formula (applied above)- 7742.262 miles
- 12459.963 kilometers
- 6727.842 nautical miles
Vincenty's formula calculates the distance between latitude/longitude points on the earth's surface using an ellipsoidal model of the planet.
Haversine formula- 7752.589 miles
- 12476.582 kilometers
- 6736.815 nautical miles
The haversine formula calculates the distance between latitude/longitude points assuming a spherical earth (great-circle distance – the shortest distance between two points).
How long does it take to fly from Seattle to Sydney?
The estimated flight time from Seattle Boeing Field to Sydney Airport is 15 hours and 9 minutes.
What is the time difference between Seattle and Sydney?
The time difference between Seattle and Sydney is 19 hours. Sydney is 19 hours ahead of Seattle.
Flight carbon footprint between Seattle Boeing Field (BFI) and Sydney Airport (SYD)
On average, flying from Seattle to Sydney generates about 961 kg of CO2 per passenger, and 961 kilograms equals 2 118 pounds (lbs). The figures are estimates and include only the CO2 generated by burning jet fuel.
Map of flight path from Seattle to Sydney
See the map of the shortest flight path between Seattle Boeing Field (BFI) and Sydney Airport (SYD).
Airport information
| Origin | Seattle Boeing Field |
|---|---|
| City: | Seattle, WA |
| Country: | United States  |
| IATA Code: | BFI |
| ICAO Code: | KBFI |
| Coordinates: | 47°31′47″N, 122°18′7″W |
| Destination | Sydney Airport |
|---|---|
| City: | Sydney |
| Country: | Australia  |
| IATA Code: | SYD |
| ICAO Code: | YSSY |
| Coordinates: | 33°56′45″S, 151°10′37″E |