SEA to SIN Turbulence Forecast
Is the Seattle to Singapore flight turbulent? Live forecast & historical patterns.
Typical turbulence along the route
Historical average pattern for SEA–SIN
About the SEA–SIN route
The Seattle to Singapore route spans the Pacific Ocean — one of the longest commercial flight paths in the world at 8,065 miles. The Pacific jet stream creates moderate turbulence, typically around 3–7 hours into the flight. The sheer length of the route means passengers experience varying conditions: calm stretches punctuated by bumpy patches.
The route is served by United, American Airlines, Delta on Boeing 777-300ER · Boeing 787-9 aircraft, with flights typically cruising at 37,000 feet over a distance of 8,065 miles (7,008 nautical miles).
💡 Tip: Long flight — turbulence varies throughout. Wing seats significantly reduce motion.
Seattle to Singapore Flight Time
How long is the flight from SEA to SIN?
The Seattle (SEA) to Singapore (SIN) flight takes approximately 15h 50m, covering 8,065 miles (7,008 nautical miles) at 37,000 feet. The route is operated by United, American Airlines, Delta. Return flights (SIN to SEA) take a similar time, though westbound transatlantic and transpacific routes are typically 30–60 minutes longer due to headwinds.
Turbulence levels on SEA–SIN
What to expect at each phase of the flight
Get minute-by-minute timing for your specific flight
Best time to fly SEA–SIN
Turbulence by month
Best seat on SEA–SIN
Boeing 777-300ER
What you'll see in the app
Full forecast, live map & seat recommendations
Similar routes
Other popular routes with turbulence data
Related guides
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Passenger Reports
Frequently asked questions
Data Sources
- PIREP — Pilot reports (PIREPs) submitted via FAA/ICAO systems, aggregated over 12+ months of historical data
- SIGMET / AIRMET — Significant Meteorological Information bulletins from NOAA Aviation Weather Center
- EDR data — Eddy Dissipation Rate measurements from commercial aircraft (ADS-B derived turbulence intensity)
- Seasonal patterns — 5-year rolling averages of turbulence frequency and intensity by month for this route
Scores represent typical conditions. Actual turbulence varies daily. For real-time forecasts, use the Turbulence Forecast app. · About our data