Helena (HLN) to Sydney (SYD)
Flight time
≈ 17h 09m
Bearing
249° W
Helena (HLN) to Sydney (SYD) is 8,172 miles (13,151 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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Route traffic
No carrier has filed nonstop HLN–SYDservice with the US Department of Transportation. That usually means the route is served with a connection, or only by carriers outside the DOT's reporting scope. The distance, map, and airport detail still apply.
The airports
Sydney
AU
Sydney Kingsford Smith International Airport
Coordinates
33.95°S, 151.18°E
Hemisphere
S · E
Frequently asked
How far is Helena (HLN) from Sydney (SYD)?
HLN to SYD is 8,172 miles (13,151 km / 7,101 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from HLN to SYD?
A nonstop covers the 8,172-mile great-circle distance in roughly 17h 09m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
Is HLN–SYD a nonstop route?
No US DOT nonstop filings were found for HLN–SYD, so it is typically flown with a connection. The great-circle distance above still applies to the direct path.
What mileage do I earn flying HLN–SYD?
Distance-based programs credit off the 8,172-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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