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San Jose (SJC) departure delays

Name: San Jose (SJC) departure delays
Creator: FlightLabs

Of 3,365 sampled departures, 37.8% left 15 minutes or more behind schedule. Average lateness was 20.4 minutes. Sample window: Dec 29, 2025 to Sep 13, 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: 22:00–22:59, 21.4% late.
Best day of week: Tuesday, 27.4% late.

Airlines with the most late departures

Airline	Flights sampled	Late	Average lateness
ChallengAir (1I)	252	85.3%	48.5 min
Southwest Airlines Co. (WN)	1,314	46.4%	23.6 min
American Airlines (AA)	74	39.2%	26.7 min
Alaska Airlines (AS)	296	36.2%	21.6 min
Delta Air Lines (DL)	327	27.2%	15.9 min

Routes from SJC

SJC to SAN — 166 flights per week
SJC to LAX — 98 flights per week
SJC to PHX — 93 flights per week
SJC to LAS — 92 flights per week

The departures that are late right now

37.8% of this SJC 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=SJC

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": "SJC", "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 SJC departures that are late right now, in the JSON above. After the trial, Starter is $24.99/mo.

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