O'Hare departures back near normal: 14% late in the last hour
- Current state
- Resolved at 1:30 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: 50% left 15+ min late in the last hour
Of 86 departures that took off between 11:09 AM and 12:09 PM CST, 43 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 11:09 AM–12:09 PM CST Sample 86 flights, 43 late (50%) Comparison 24% typical · US DOT on-time data, last 12 published months, departures in the 11 AM hour Median delay 15.0 min Method FAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds) Source event time Ingested Published here (2026-11-01 18:09 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: 14% late in the last hour
What changed: late share 50% at worst → 14% now
Of 56 departures that took off between 12:30 PM and 1:30 PM CST, 8 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 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 window 12:30 PM–1:30 PM CST Sample 56 flights, 8 late (14%) Comparison 24% typical · US DOT on-time data, last 12 published months, departures in the 1 PM hour Median delay -6.0 min Method FAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds) Source event time Ingested Published here (2026-11-01 19:30 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?