SriLankan (UL) flight UL309 left 15 minutes late or more on 100.0% of 18 observed departures. Average lateness was 35.5 minutes. Sample window: Nov 22, 2025 to May 5, 2026.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Month | Departures observed | Late | Average lateness |
|---|---|---|---|
| Apr 2026 | 10 | 100.0% | 28.8 min |
All flights SIN to CMB · SriLankan (UL) on-time performance · SIN departure delays
GET /flight returns the status of UL309 by date, with scheduled, estimated and actual departure and arrival times.
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