tailodds FORECAST
Partly stale · checked FAA NAS status 221 h staleForecast cycle 1 hLightning 221 h staleWeather observations no data staleFAA surface data 7 minFAA flight data 8 min

FAA NAS status is stale (221 h old). No FAA restriction can start or end on the wire until it is fresh again.

Lightning is stale (221 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 Major Resolved Delay STL departures

St Louis departure delays worsen: 79% late in the last hour

Current state
Resolved: closed without a new report (No usable measurement for 6 h; closed without a recovery report.)
Started
Latest activity
Updates
2
Create monitor View STLFlights at STL

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

    St Louis departures running late: 47% left 15+ min late in the last hour

    Of 15 departures that took off between 10:33 AM and 11:33 AM CST, 7 left at least 15 minutes late. St Louis typically sees 21% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 11 AM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window10:33 AM–11:33 AM CST
    Sample15 flights, 7 late (47%)
    Comparison21% typical · US DOT on-time data, last 12 published months, departures in the 11 AM hour
    Median delay11.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-01 17:33 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

    St Louis departure delays worsen: 79% late in the last hour

    What changed: late share 47% → 79%

    Of 14 departures that took off between 7:59 PM and 8:59 PM CST, 11 left at least 15 minutes late. St Louis typically sees 39% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 8 PM hour). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window7:59 PM–8:59 PM CST
    Sample14 flights, 11 late (79%)
    Comparison39% typical · US DOT on-time data, last 12 published months, departures in the 8 PM hour
    Median delay33.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-02 02:59 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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Closed Mon Nov 2, 4:32 AM CST: No usable measurement for 6 h; closed without a recovery report.