O'Hare departures back near normal: 5% late in the last hour
- Current state
- Resolved at 6:46 AM CST
- Started
- Latest activity
- Updates
- 3
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: 65% left 15+ min late in the last hour
Of 31 departures that took off between 10:55 PM and 11:55 PM CST, 20 left at least 15 minutes late. O'Hare typically sees 35% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 11 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
Evidence for this update
Measurement window 10:55 PM–11:55 PM CST Sample 31 flights, 20 late (65%) Comparison 35% typical · US DOT on-time data, last 12 published months, departures in the 11 PM hour Median delay 42.0 min Method FAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds) Source event time Ingested Published here (2026-11-13 05:55 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? -
Escalation Observed
O'Hare departure delays worsen: 80% late in the last hour
What changed: late share 65% → 80%
Of 20 departures that took off between 11:21 PM and 12:21 AM CST, 16 left at least 15 minutes late. O'Hare typically sees 35% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 11 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
Evidence for this update
Measurement window 11:21 PM–12:21 AM CST Sample 20 flights, 16 late (80%) Comparison 35% typical · US DOT on-time data, last 12 published months, departures in the 11 PM hour Median delay 74.0 min Method FAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds) Source event time Ingested Published here (2026-11-13 06:21 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: 5% late in the last hour
What changed: late share 85% at worst → 5% now
Of 20 departures that took off between 5:46 AM and 6:46 AM CST, 1 left at least 15 minutes late. O'Hare typically sees 11% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 6 AM hour). Measured by Tailodds from FAA flight data against airline schedules. The late share has stayed at or below 21% for 31 minutes across 16 checks, each with at least 12 flights and current data.
Evidence for this update
Measurement window 5:46 AM–6:46 AM CST Sample 20 flights, 1 late (5%) Comparison 11% typical · US DOT on-time data, last 12 published months, departures in the 6 AM hour Median delay -4.0 min Method FAA wheels-off/on +/- median taxi (taxi_times) vs the FAA-filed airline schedule (flight_odds) Source event time Ingested Published here (2026-11-13 12:46 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?