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• St. Louis to Sydney Flight Time, Distance

St. Louis to Sydney Flight Time, Distance, Route Map

Flight time from St. Louis, United States to Sydney, Australia is 18 hours 8 minutes under avarage conditions. Our flight time calculator assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/hr or 434 knots. Actual flight times may vary depending on aircraft type, cruise speed, routing, weather conditions, passenger load, and other factors.

What is the Flight Distance Between St. Louis and Sydney?

The flight distance from St. Louis (United States) to Sydney (Australia) is 9063 miles. This is equivalent to 14586 kilometers or 7871 nautical miles. The calculated distance (air line) is the straight line distance or direct flight distance between cities. The nearest airport to St. Louis, is Bi-State Parks Airport (CPS) and the nearest airport to Sydney, is Kingsford Smith Airport (SYD).

St. Louis - Sydney Timezones & Time Difference

Current local time in St. Louis is 2025-12-05, 09:54:35 EST
Current local time in Sydney is 2025-12-06, 01:54:35 AEDT.
Time difference between St. Louis (United States) and Sydney (Australia) is 16 Hours.
Sydney time is 16 Hours ahead of St. Louis.

St. Louis to Sydney Flight Route Map

Flight map from St. Louis, United States to Sydney, Australia is given below.
Click the map to view St. Louis to Sydney nonstop flight path and travel direction.

The distance between cities calculated based on their latitudes and longitudes. This is also called distance as the crow flies. Bird flight distance is calculated by drawing a straight line between two point coordinates. The length of this drawn line will give the shortest distance value. This distance may be very much different from the actual travel distance. St. Louis GPS Coordinates: Latitude: N 38° 37' 37.2'' Longitude: W 90° 11' 57.9'' Sydney GPS Coordinates: Latitude: S 33° 52' 2.9'' Longitude: E 151° 12' 25.1'' St. Louis Map, Where is St. Louis located? Sydney Map, Where is Sydney located?

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