tailodds FORECAST
Partly stale · checked FAA NAS status 223 h staleForecast cycle 69 minLightning 223 h staleWeather observations no data staleFAA surface data 3 minFAA flight data 3 min

FAA NAS status is stale (223 h old). No FAA restriction can start or end on the wire until it is fresh again.

Lightning is stale (223 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 ORD arrivals

O'Hare arrivals back near normal: 15% late in the last hour

Current state
Resolved at 9:52 PM CST
Started
Latest activity
Updates
2
Create monitor View ORDFlights at ORD

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

    O'Hare arrivals running late: 48% reached the gate 15+ min late in the last hour

    Of 66 arrivals that landed between 6:35 PM and 7:35 PM CST, 32 reached the gate at least 15 minutes late. Typically 26% of arrivals at O'Hare arrive that late (US DOT on-time data, last 12 published months, all arrivals). Measured by Tailodds from FAA flight data against airline schedules.

    Evidence for this update
    Measurement window6:35 PM–7:35 PM CST
    Sample66 flights, 32 late (48%)
    Comparison26% typical · US DOT on-time data, last 12 published months, all arrivals
    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 (2026-11-04 01:35 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

    O'Hare arrivals back near normal: 15% late in the last hour

    What changed: late share 51% at worst → 15% now

    Of 41 arrivals that landed between 8:52 PM and 9:52 PM CST, 6 reached the gate at least 15 minutes late. Typically 26% of arrivals at O'Hare arrive that late (US DOT on-time data, last 12 published months, all arrivals). Measured by Tailodds from FAA flight data against airline schedules. The late share has stayed at or below 30% for 34 minutes across 9 checks, each with at least 12 flights and current data.

    Evidence for this update
    Measurement window8:52 PM–9:52 PM CST
    Sample41 flights, 6 late (15%)
    Comparison26% typical · US DOT on-time data, last 12 published months, all arrivals
    Median delay-10.0 min
    MethodFAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds)
    Source event time
    Ingested
    Published here (2026-11-04 03:52 UTC)
    SourcesTailodds measurement of FAA flight data against airline schedules
    Provenanceobserved_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1
    Was this useful?