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San Francisco International (SFO) departure delays

Name: San Francisco International (SFO) departure delays
Creator: FlightLabs

Of 14,890 sampled departures, 63.8% left 15 minutes or more behind schedule. Average lateness was 32.1 minutes. Sample window: Oct 19, 2025 to May 8, 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: 06:00–06:59, 45.7% late.
Best day of week: Friday, 57.7% late.

Airlines with the most late departures

Airline	Flights sampled	Late	Average lateness
All Nippon Airways (NH)	31	100.0%	56.7 min
Qatar Airways (QR)	22	100.0%	95.4 min
Zipair Tokyo (ZG)	44	97.7%	47.2 min
Korean Air (KE)	37	97.3%	34.5 min
Air New Zealand (NZ)	28	96.4%	27.0 min

Routes from SFO

SFO to LAX — 426 flights per week
SFO to SAN — 235 flights per week
SFO to PHX — 192 flights per week
SFO to LAS — 185 flights per week
SFO to ORD — 179 flights per week
SFO to SEA — 170 flights per week
SFO to SNA — 169 flights per week
SFO to JFK — 158 flights per week

The departures that are late right now

63.8% of this SFO 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=SFO

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

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