Your Flight
We analysed more than 26,000 data points along your route from Singapore Changi Airport, Singapore to San Francisco International Airport, San Francisco.
SIN
Singapore Changi Airport
✈
SFO
San Francisco International Airport
Route Information
Departure
SIN (SIN)
Distance
13,581.5 km (7,333.4 nautical miles)
Arrival
SFO (SFO)
Flight Time
945 minutes (15h 45m)
Flight Profile
Cruise Altitude: 39,000 ft (Flight Level 390)
Route calculated using great circle navigation
Turbulence comfort along route
Comfort score combines turbulence probability with intensity, higher means rougher
Smooth
Light
Moderate
Severe
We know turbulence can feel scary - especially on long flights.
This report is built for you: what bumps feel like, when they happen, and why they don't put the aircraft in danger. Many passengers feel exactly the same way.
AI-powered flight briefing
26,000 data points analyzed
· HIGH confidence
Your Journey Beta
3 hours 45 minutes, 5 hours 25 minutes, and 11 hours 50 minutes into the flight: Some moderate bumps expected.
The crew may adjust altitude or ask you to stay seated during these sections.
The rest of the flight should be smooth.
Your route takes you crossing the North Pacific Ocean – conditions there can sometimes cause light turbulence.
Smooth Flight
We're expecting smooth conditions throughout your flight. You can sit back and relax.
Takeoff
Takeoff should feel smooth with possible light bumps, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 45 knots. These winds are favorable and may get you there up to 32 minutes early.
Landing
Landing should feel smooth with typical approach conditions.
You're in Safe Hands
If you feel nervous at any point, remember that turbulence is expected, safe, and part of normal flying. The crew is monitoring everything, and the aircraft is built to handle far more than anything you will feel. Have a safe and calm flight.
Relaxation Exercises
ZeroTurb Index (ZTI): Powered by our turbulence prediction algorithm combining atmospheric Richardson Number, wind shear analysis, temperature gradients, and geomagnetic activity. Learn more
Flight Timeline 15h 45min
Maximum turbulence expected per segment
Takeoff
Light
0:30-1:00
Light
1:00-1:30
Light
1:30-2:00
Light
2:00-2:30
Light
2:30-3:00
Light
3:00-3:30
Light
3:30-4:00
Moderate
4:00-4:30
Moderate
4:30-5:00
Moderate
5:00-5:30
Moderate
5:30-6:00
Light
6:00-6:30
Light
6:30-7:00
Light
7:00-7:30
Light
7:30-8:00
Light
8:00-8:29
Light
8:29-8:58
Light
8:58-9:27
Light
9:27-9:56
Light
9:56-10:25
Smooth
10:25-10:54
Light
10:54-11:23
Moderate
11:23-11:52
Moderate
11:52-12:21
Light
12:21-12:50
Moderate
12:50-13:19
Moderate
13:19-13:48
Light
13:48-14:17
Light
14:17-14:46
Moderate
14:46-15:15
Moderate
Landing
Light
Smooth
Light
Moderate
Severe
Longer bars indicate higher turbulence intensity. Values shown are the maximum for each time segment.
Airport conditions
Live weather at departure and arrival
SIN
Singapore Changi Airport - Departure
Wind
8 kt (120°)
Sky
Scattered
Temperature
29°C
Conditions
VFR - Clear conditions, no delays expected
SFO
San Francisco International Airport - Arrival
Wind
16 kt G25 (280°)
Sky
Clear
Temperature
19°C
Conditions
VFR - Clear conditions, no delays expected
Your flight details
Departure timing and aircraft information
Data sources & our approach
ZeroTurb's Custom Algorithm: Our proprietary
ZeroTurb Index (ZTI) combines three meteorological indices weighted by their
predictive accuracy - giving you transparent, passenger-focused turbulence probability instead
of vague categories.
This forecast integrates data from:
- ECMWF Open Data - Global atmospheric model (wind/temperature at 13 flight levels)
- NOAA Aviation Weather Center - Pilot Reports (PIREPs), SIGMETs/AIRMETs, TAFs
- NOAA Space Weather Prediction Center - Aurora forecasts for polar routes
- AviationStack API - Flight schedules and airline operational data
Disclaimer: This forecast is for informational purposes only. Always consult official aviation weather sources and follow ATC guidance.