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Observed Significant Resolved Delay SEA departures

Seattle departures back near normal: 15% late in the last hour

Current state
Resolved at 2:22 PM PST
Started
Latest activity
Updates
2
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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

    Seattle departures running late: 42% left 15+ min late in the last hour

    Of 38 departures that took off between 12:23 PM and 1:23 PM PST, 16 left at least 15 minutes late. Seattle typically sees 21% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 12 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window12:23 PM–1:23 PM PST
    Sample38 flights, 16 late (42%)
    Comparison21% typical · US DOT on-time data, last 12 published months, departures in the 12 PM hour
    Median delay13.0 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 21:23 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: 15% late in the last hour

    What changed: late share 43% at worst → 15% now

    Of 34 departures that took off between 1:22 PM and 2:22 PM PST, 5 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 1 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 window1:22 PM–2:22 PM PST
    Sample34 flights, 5 late (15%)
    Comparison22% typical · US DOT on-time data, last 12 published months, departures in the 1 PM hour
    Median delay-2.0 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 22:22 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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