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Salt Lake City International (SLC) departure delays

Name: Salt Lake City International (SLC) departure delays
Creator: FlightLabs

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.

When departures are on time

Best hour to depart: 23:00–23:59, 22.6% late.
Best day of week: Wednesday, 36.0% late.

Airlines with the most late departures

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

Routes from SLC

SLC to DEN — 144 flights per week
SLC to PHX — 121 flights per week
SLC to LAX — 95 flights per week
SLC to LAS — 87 flights per week
SLC to SEA — 81 flights per week

The departures that are late right now

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=SLC

Example response

Field 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.

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