Route turbulence forecast
Seoul → Bangkok
Turbulence forecast for flights from Incheon International Airport (ICN) to Suvarnabhumi Airport (BKK).
Check flights on this route
Get a segment-by-segment turbulence forecast for any scheduled flight from ICN to BKK, with live wind and pilot reports.
Live status with real-time delays and cancellations.
What to expect on this route
Westbound (usually into prevailing winds) · Great-circle bearing -129°
Jet-stream exposure on this corridor is significant. Long mid-latitude legs mean clear-air turbulence is the dominant source of bumps, typically encountered at cruise altitude. Westbound aircraft typically fly against the prevailing winds, adding flight time. Captains often pick altitudes that avoid the strongest headwinds, which can also mean picking cleaner-air altitudes.
- Ocean / water segments
- North Pacific · Indian Ocean
Seasonal turbulence pattern
This corridor is most turbulent in the northern winter (Nov–Mar), when the jet stream is strongest and sits closer to the route.
- Peak turbulence
- November–March (Northern Hemisphere winter)
- Typically calmest
- Late spring to early autumn (May–September)
ICN → BKK turbulence FAQ
Is the Seoul to Bangkok flight usually bumpy?
Most of the 3,669 km route sits in the mixed band with high jet-stream exposure. Historically that means occasional clear-air turbulence at cruise altitude is normal, especially in winter.
When is the best time to fly ICN to BKK for a smooth flight?
Statistically, Late spring to early autumn (May–September) sees the calmest conditions for this corridor. Within any season, morning departures see less convective (thunderstorm-driven) turbulence than afternoon flights.
How long is the flight from ICN to BKK?
Block time is usually around 4h 46m direct, cruising at approximately FL370 (37,000 ft). Actual duration varies with winds — tailwinds can shave 15–30 minutes, headwinds can add 30+ minutes on this westbound sector.
How accurate is Turbcast's forecast for this route?
We use live NOAA Aviation Weather Center pilot reports (PIREPs), SIGMETs and AIRMETs, layered with physics-based Ellrod and Richardson-number calculations from Open-Meteo pressure-level wind and temperature data. If a source is unavailable for a waypoint we show an em dash rather than invent a value.
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Articles
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