Your Flight
We analysed more than 7,000 data points along your route from Incheon International Airport, Seoul to Tan Son Nhat International Airport, Ho Chi Minh City.
Asiana Airlines
ICN
SGN
OZ731
Asiana Airlines
FLIGHT
OZ731
ICN
Incheon International Airport
16:30
17 Jan
Now: --:-- KS
12 h 30 m
SGN
Tan Son Nhat International Airport
20:00
17 Jan
Aircraft: a21n
Altitude: 40,000ft (12.2km)
Distance: 1,924 nm
Duration: 12 h 30 m
Also sold by:
AIRCRAFT
a21n
ALTITUDE
40,000ft
DISTANCE
1,924 nm
DURATION
12 h 30 m
ALSO SOLD BY
Times and gates subject to change. Verify with airline.
Turbulence Comfort Along Route Comfort View
Comfort Score: Combines turbulence probability (GTG forecast) with intensity (ZTI analysis).
High scores indicate both high probability AND high intensity turbulence.
Smooth
Light
Moderate
Severe
Flight Smoothness Score
7.8
/10
Smoothness
Mostly Smooth
16%
Smooth
78%
Light
5%
Moderate
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AI-Powered Flight Briefing
📊 7,000 data points analyzed
HIGH Confidence
Your Journey Beta
Some bumpy patches are scattered throughout the flight. Keep your seatbelt fastened when seated.
Your route takes you crossing the South China Sea – conditions there can sometimes cause light turbulence.
Mostly Smooth
Overall conditions look mostly smooth with occasional light bumps. Nothing to worry about.
Takeoff
Takeoff should feel smooth, with calm conditions around the airport.
Winds Aloft
Winds at cruising altitude are about 84 knots. These winds may delay arrival by up to 45 minutes.
Landing
Landing should feel a bit bumpy on descent 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 proprietary turbulence prediction algorithm combining atmospheric Richardson Number, wind shear analysis, temperature gradients, and geomagnetic activity for precise, real-time forecasting. Learn more
Flight Timeline 12h 30min
Maximum turbulence expected per segment
Takeoff
Smooth
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
Light
4:00-4:30
Light
4:30-5:00
Moderate
5:00-5:30
Light
5:30-6:00
Moderate
6:00-6:30
Light
6:30-7:00
Light
7:00-7:30
Light
7:30-8:00
Light
8:00-8:30
Light
8:30-9:00
Light
9:00-9:30
Light
9:30-10:00
Light
10:00-10:30
Light
10:30-11:00
Light
11:00-11:30
Moderate
11:30-12:00
Light
Landing
Light
Smooth
Light
Moderate
Severe
Longer bars indicate higher turbulence intensity. Values shown are the maximum for each time segment.
Turbulence Metrics ZTI and EDR (scaled)
ZTI Scale
Smooth
<12
<12
Light
12-30
12-30
Moderate
30-45
30-45
Severe
>45
>45
EDR Scale
Smooth
<6
<6
Light
6-24
6-24
Moderate
24-42
24-42
Severe
>42
>42
Airport Weather
Departure
ICN
0°C
(Now)
NSC
•
7 kt
•
VFR — Clear conditions, no delays expected
Arrival
SGN
31°C
(Now)
Scattered
•
10 kt
•
VFR — Clear conditions, no delays expected
☀️ Morning Flight
Morning flights typically experience smoother conditions as the atmosphere is more stable and thermal turbulence hasn't yet developed.
Narrow-Body Aircraft (Medium)
Single-aisle mainline jets like this offer a comfortable ride. While you may feel turbulence more than on wide-body aircraft, they are engineered to handle it smoothly.
Looking for more detailed analysis?
Data Sources & Our Approach
ZeroTurb's Custom Algorithm: We've developed a proprietary
ZeroTurb Index (ZTI) algorithm that combines three meteorological indices weighted by their
predictive accuracy. This gives 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.
How accurate are turbulence alerts? Alerts are based on updated forecast models and pilot reports, and can change as departure approaches.