Singapore Airlines (SQ) flight SQ634 left 15 minutes late or more on 75.0% of 12 observed departures. Average lateness was 22.4 minutes. Sample window: Nov 25, 2025 to May 7, 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 | 8 | 75.0% | 23.9 min |
All flights SIN to HND · Singapore Airlines (SQ) on-time performance · SIN departure delays
GET /flight returns the status of SQ634 by date, with scheduled, estimated and actual departure and arrival times.
https://www.goflightlabs.com/flight?access_key=YOUR_ACCESS_KEY&flight_number=SQ634
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