Of 8,420 sampled departures, 42.0% left 15 minutes or more behind schedule. Average lateness was 22.1 minutes. Sample window: Nov 15, 2025 to Jul 27, 2026.
These are historical aggregates, not live status. A departure is late at 15 minutes past schedule.
| Airline | Flights sampled | Late | Average lateness |
|---|---|---|---|
| ChallengAir (1I) | 180 | 82.8% | 39.0 min |
| Alpine Air Express (5A) | 20 | 70.0% | 36.5 min |
| Star Up S.A. dba Star Peru (2I) | 23 | 65.2% | 18.0 min |
| Southwest Airlines Co. (WN) | 598 | 64.4% | 30.4 min |
| JetBlue (B6) | 57 | 63.2% | 38.7 min |
42.0% of this SLC sample left 15 minutes late or more.
GET /flight_delays returns the ones that are late at this moment: airline, flight number, scheduled time, actual time and minutes of delay.
https://www.goflightlabs.com/flight_delays?access_key=YOUR_ACCESS_KEY&delay=15&type=departures&dep_iata=SLCField names match the live API. This flight only shows the shape. It is not a live result.
{
"success": true,
"data": [
{
"airline_iata": "AA",
"flight_iata": "AA100",
"flight_number": "100",
"dep_iata": "SLC",
"dep_time": "2024-03-15 08:00",
"dep_actual": "2024-03-15 08:22",
"dep_delayed": 22,
"status": "active"
}
]
}
That URL still says YOUR_ACCESS_KEY.
A 7-day trial replaces it with a real key and returns the SLC departures that are late right now, in the JSON above.
After the trial, Starter is $24.99/mo.