tailodds FORECAST
Partly stale · checked FAA NAS status 224 h staleForecast cycle 68 minLightning 224 h staleWeather observations no data staleFAA surface data 4 minFAA flight data 4 min

FAA NAS status is stale (224 h old). No FAA restriction can start or end on the wire until it is fresh again.

Lightning is stale (224 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 SEA departures

Seattle departures back near normal: 8% late in the last hour

Current state
Resolved at 11:31 PM PST
Started
Latest activity
Updates
2
Create monitor View SEAFlights at SEA

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

    Seattle departures running late: 53% left 15+ min late in the last hour

    Of 17 departures that took off between 8:43 PM and 9:43 PM PST, 9 left at least 15 minutes late. Seattle typically sees 22% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 9 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window8:43 PM–9:43 PM PST
    Sample17 flights, 9 late (53%)
    Comparison22% typical · US DOT on-time data, last 12 published months, departures in the 9 PM hour
    Median delay16.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-11 05:43 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. Recovery Observed

    Seattle departures back near normal: 8% late in the last hour

    What changed: late share 53% at worst → 8% now

    Of 24 departures that took off between 10:31 PM and 11:31 PM PST, 2 left at least 15 minutes late. Seattle typically sees 20% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 11 PM hour). Measured by Tailodds from FAA flight data against airline schedules. The late share has stayed at or below 30% for 30 minutes across 16 checks, each with at least 12 flights and current data.

    Evidence for this update
    Measurement window10:31 PM–11:31 PM PST
    Sample24 flights, 2 late (8%)
    Comparison20% typical · US DOT on-time data, last 12 published months, departures in the 11 PM hour
    Median delay-3.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-11 07:31 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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