Your Flight
We analysed more than 2,500 data points along your route from Narita International Airport, Narita to Incheon International Airport, Seoul.
NRT ICN
Narita International Airport Incheon International Airport
Route Information
Departure
NRT (NRT)
Distance
1,256.8 km (678.6 nautical miles)
Arrival
ICN (ICN)
Flight Time
180 minutes (3h 0m)
Flight Profile
Cruise Altitude: 30,000 ft (Flight Level 300)
Route calculated using great circle navigation
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
8.1
/10
Smoothness
Smooth Flight
33%
Smooth
59%
Light
7%
Moderate
AI-Powered Flight Briefing
📊 2,500 data points analyzed
HIGH Confidence
Your Journey Beta
27 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 Sea of Japan – 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 69 knots. These winds may delay arrival by up to 15 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 3h 00min
Maximum turbulence expected per segment
Takeoff
Light
0:20-0:48
Moderate
0:48-1:16
Light
1:16-1:44
Light
1:44-2:12
Moderate
2:12-2:40
Light
Landing
Smooth
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
NRT
4°C
(Now)
Broken
•
14 kt
•
LIFR — Very poor visibility, significant delays expected
Arrival
ICN
3°C
(Now)
NSC
•
8 kt
•
VFR — Clear conditions, no delays expected
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.