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Qantas QF128 flies the tropical convective route from Hong Kong to Sydney. Conditions change hour to hour — view the live forecast for your departure date.
View live forecastThis is a short or low-latitude sector, so clear-air turbulence from upper-level jets is rare. At tropical latitudes, convective turbulence from thunderstorms is the main driver — pilots generally route around storm cells, but afternoon/evening flights encounter more build-up than morning departures. A large portion of the flight crosses open ocean (North Pacific), where upper-level conditions are generally smoother than over continental terrain.
Calmest season: Dry season. Transpacific routes are most turbulent in winter months when the polar jet is strong and positioned further south. Tropical routes see more convective (thunderstorm-driven) turbulence during regional wet seasons and monsoon cycles, typically worst in the afternoon and evening.
Full HKG to SYD route guideQantas QF128 operates between HKG and SYD. Whether it’s bumpy depends on the day’s weather — Turbcast pulls live NOAA aviation-grade data so you can check the actual forecast for your departure date rather than relying on averages.
QF128 is typically operated by the A332. Aircraft swaps happen — confirm with your booking before flying.
Approximately 9h 06m direct, covering 7,394 km at a typical cruise of FL390.
Historically calmest during Dry season. Forecast accuracy improves as you get closer to departure — within 48 hours the NOAA WAFS model is at peak skill.