Route turbulence forecast
Lisbon → Istanbul
Turbulence forecast for flights from Humberto Delgado Airport (Lisbon Portela Airport) (LIS) to Istanbul Airport (IST).
Check flights on this route
Get a segment-by-segment turbulence forecast for any scheduled flight from LIS to IST, with live wind and pilot reports.
Live status with real-time delays and cancellations.
What to expect on this route
Eastbound (generally tailwind-assisted) · Great-circle bearing 73°
The route crosses mid-latitudes where the polar jet can influence flight conditions, though exposure is shorter than on genuine long-haul crossings. A large portion of the flight crosses open ocean (Mediterranean), where upper-level conditions are generally smoother than over continental terrain. Flying eastbound, aircraft usually benefit from tailwinds near the jet core, which trims flight time — but the edges of the jet are where clear-air turbulence most often sits.
- Ocean / water segments
- Mediterranean
Seasonal turbulence pattern
Seasonal turbulence on this route is modest — most variation comes from day-to-day weather rather than strong seasonal cycles.
- Peak turbulence
- November–March (Northern Hemisphere winter)
- Typically calmest
- Late spring to early autumn (May–September)
LIS → IST turbulence FAQ
Is the Lisbon to Istanbul flight usually bumpy?
Most of the 3,212 km route sits in the mid latitude band with moderate 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 LIS to IST 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 LIS to IST?
Block time is usually around 4h 14m 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 eastbound 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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