Partly stale · checked FAA NAS status 222 h staleForecast cycle 76 minLightning 222 h staleWeather observations no data staleFAA surface data 7 minFAA flight data 9 min

FAA NAS status is stale (222 h old). No FAA restriction can start or end on the wire until it is fresh again.

Lightning is stale (222 h old). Lightning items are paused; thunderstorm items still come from official observations.

Weather observations is stale. Weather items are paused until it is fresh again; missing observations never end a weather event.

Observed Significant Resolved Delay SFO departures

SFO departures back near normal: 12% late in the last hour

Current state
Resolved at 7:28 PM PST
Started
Latest activity
Updates
6
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Tailodds reports what the FAA publishes, what we measure and what our model forecasts. It doesn’t control airport operations or change bookings; check with your airline about your trip.

Updates oldest first

  1. Initial Observed

    SFO departures running late: 64% left 15+ min late in the last hour

    Of 28 departures that took off between 2:22 PM and 3:22 PM PST, 18 left at least 15 minutes late. SFO typically sees 32% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 2 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window2:22 PM–3:22 PM PST
    Sample28 flights, 18 late (64%)
    Comparison32% typical · US DOT on-time data, last 12 published months, departures in the 2 PM hour
    Median delay20.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-12 23:22 UTC)
    SourcesTailodds measurement of FAA flight data against airline schedules
    Provenanceobserved_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1
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  2. Escalation Observed

    SFO departure delays worsen: 90% late in the last hour

    What changed: late share 64% → 90%

    Of 30 departures that took off between 2:42 PM and 3:42 PM PST, 27 left at least 15 minutes late. SFO typically sees 35% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 3 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window2:42 PM–3:42 PM PST
    Sample30 flights, 27 late (90%)
    Comparison35% typical · US DOT on-time data, last 12 published months, departures in the 3 PM hour
    Median delay29.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-12 23:42 UTC)
    SourcesTailodds measurement of FAA flight data against airline schedules
    Provenanceobserved_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1
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  3. De-escalation Observed

    SFO departure delays ease: 43% late in the last hour, still above normal

    What changed: late share 90% → 43%

    Of 37 departures that took off between 3:54 PM and 4:54 PM PST, 16 left at least 15 minutes late. SFO typically sees 29% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 4 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window3:54 PM–4:54 PM PST
    Sample37 flights, 16 late (43%)
    Comparison29% typical · US DOT on-time data, last 12 published months, departures in the 4 PM hour
    Median delay3.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-13 00:54 UTC)
    SourcesTailodds measurement of FAA flight data against airline schedules
    Provenanceobserved_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1
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  4. Escalation Observed

    SFO departure delays worsen: 74% late in the last hour

    What changed: late share 43% → 74%

    Of 35 departures that took off between 5:04 PM and 6:04 PM PST, 26 left at least 15 minutes late. SFO typically sees 31% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 5 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window5:04 PM–6:04 PM PST
    Sample35 flights, 26 late (74%)
    Comparison31% typical · US DOT on-time data, last 12 published months, departures in the 5 PM hour
    Median delay24.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-13 02:04 UTC)
    SourcesTailodds measurement of FAA flight data against airline schedules
    Provenanceobserved_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1
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  5. De-escalation Observed

    SFO departure delays ease: 38% late in the last hour, still above normal

    What changed: late share 74% → 38%

    Of 21 departures that took off between 5:53 PM and 6:53 PM PST, 8 left at least 15 minutes late. SFO typically sees 24% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 6 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window5:53 PM–6:53 PM PST
    Sample21 flights, 8 late (38%)
    Comparison24% typical · US DOT on-time data, last 12 published months, departures in the 6 PM hour
    Median delay8.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-13 02:53 UTC)
    SourcesTailodds measurement of FAA flight data against airline schedules
    Provenanceobserved_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1
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  6. Recovery Observed

    SFO departures back near normal: 12% late in the last hour

    What changed: late share 100% at worst → 12% now

    Of 25 departures that took off between 6:28 PM and 7:28 PM PST, 3 left at least 15 minutes late. SFO typically sees 24% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 6 PM hour). Measured by Tailodds from FAA flight data against airline schedules. The late share has stayed at or below 30% for 31 minutes across 16 checks, each with at least 12 flights and current data.

    Evidence for this update
    Measurement window6:28 PM–7:28 PM PST
    Sample25 flights, 3 late (12%)
    Comparison24% typical · US DOT on-time data, last 12 published months, departures in the 6 PM hour
    Median delay-1.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-13 03:28 UTC)
    SourcesTailodds measurement of FAA flight data against airline schedules
    Provenanceobserved_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1
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