O'Hare departures back near normal: 27% late in the last hour
- Current state
- Resolved at 5:30 PM CST
- Started
- Latest activity
- Updates
- 2
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
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Initial Observed
O'Hare departures running late: 45% left 15+ min late in the last hour
Of 71 departures that took off between 11:18 AM and 12:18 PM CST, 32 left at least 15 minutes late. O'Hare typically sees 24% 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 window 11:18 AM–12:18 PM CST Sample 71 flights, 32 late (45%) Comparison 24% typical · US DOT on-time data, last 12 published months, departures in the 11 AM hour Median delay 9.0 min Method FAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds) Source event time Ingested Published here (2026-11-02 18:18 UTC) Sources Tailodds measurement of FAA flight data against airline schedules Provenance observed_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1 Was this useful? -
Recovery Observed
O'Hare departures back near normal: 27% late in the last hour
What changed: late share 62% at worst → 27% now
Of 71 departures that took off between 4:30 PM and 5:30 PM CST, 19 left at least 15 minutes late. O'Hare typically sees 34% 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. 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 window 4:30 PM–5:30 PM CST Sample 71 flights, 19 late (27%) Comparison 34% typical · US DOT on-time data, last 12 published months, departures in the 5 PM hour Median delay 2.0 min Method FAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds) Source event time Ingested Published here (2026-11-02 23:30 UTC) Sources Tailodds measurement of FAA flight data against airline schedules Provenance observed_ops observed-ops-v1 · config 2026-10-17.1 · writer template-v1 Was this useful?