SQ391 IstanbulIST · 13:10 SingaporeSIN · 04:55
SQ391 by Singapore Airlines flies from Istanbul (IST) to Singapore (SIN) for the Mon, Sep 7 departure.
arrived at SIN · 42 min early
Where the minutes go
last 4 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at IST and SIN are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
How SQ391 actually runs
Pro Flight Search has tracked every published board update for SQ391 across the IST and SIN boards: schedule changes, gate pushes and actual clocks. Usually lands ~39 min early. Based on 4 confirmed landings · 4/4 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how SQ391 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as IST and SIN published them.
Planning around SQ391? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — SQ391 Istanbul to Singapore on-time performance, measured from the IST and SIN airport boards.
https://proflightsearch.com/flight/SQ391
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