Singapore Airlines (SQ) flight SQ138 left 15 minutes late or more on 64.6% of 48 observed departures. Average lateness was 19.7 minutes. Sample window: Nov 26, 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 | 28 | 64.3% | 17.9 min |
| May 2026 | 14 | 57.1% | 18.4 min |
All flights SIN to PEN · Singapore Airlines (SQ) on-time performance · SIN departure delays
GET /flight returns the status of SQ138 by date, with scheduled, estimated and actual departure and arrival times.
https://www.goflightlabs.com/flight?access_key=YOUR_ACCESS_KEY&flight_number=SQ138
That URL still says YOUR_ACCESS_KEY.
A 7-day trial replaces it with a real key. After the trial, Starter is $24.99/mo.