Sourced developments at US airports: what the FAA reports at every airport, and what we measure and our model forecasts at the busiest ones.
Partly stale · checked FAA NAS status 229 hstaleForecast cycle 1 hLightning 229 hstaleWeather observations no datastaleFAA surface data <1 minFAA flight data <1 min
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Tailodds’ model gives the 42 departures scheduled from Orange County noon–3 PM Friday an average 46% chance of leaving 15+ minutes late. With calm weather the same flights would average 30%. From the 11:00 PM PST forecast (model famA-fc-v3+famB-sd-v4i). This is a forecast, not a report of delays.
Probability 46%Horizon 11.5 hModel famA-fc-v3+famB-sd-v4i
Tailodds’ model gives the 28 departures scheduled from Orange County 6–9 PM Friday an average 48% chance of leaving 15+ minutes late. With calm weather the same flights would average 32%. From the 7:00 PM PST forecast (model famA-fc-v3). This is a forecast, not a report of delays.
Of 12 departures that took off between 6:40 PM and 7:40 PM PST, 6 left at least 15 minutes late. Orange County typically sees 25% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 7 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
Tailodds’ model gives the 24 departures scheduled from Orange County 3–6 PM Friday an average 51% chance of leaving 15+ minutes late. With calm weather the same flights would average 32%. From the 4:00 PM PST forecast (model famA-fc-v3). This is a forecast, not a report of delays.
Of 13 departures that took off between 1:17 PM and 2:17 PM PST, 7 left at least 15 minutes late. Orange County typically sees 26% 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.
Tailodds’ model gives the 28 departures scheduled from Orange County 6–9 PM Monday an average 42% chance of leaving 15+ minutes late. With calm weather the same flights would average 25%. From the 12:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 26 departures scheduled from Orange County 3–6 PM Monday an average 45% chance of leaving 15+ minutes late. With calm weather the same flights would average 28%. From the 12:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 13 departures that took off between 12:14 PM and 1:14 PM PST, 7 left at least 15 minutes late. Orange County typically sees 23% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 12 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
Tailodds’ model gives the 45 departures scheduled from Orange County 6–9 PM Friday an average 55% chance of leaving 15+ minutes late. With calm weather the same flights would average 39%. From the 2:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 27 departures scheduled from Orange County 6–9 PM Tuesday an average 45% chance of leaving 15+ minutes late. With calm weather the same flights would average 30%. From the 3:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 41 departures scheduled from Orange County 6–9 PM Monday an average 46% chance of leaving 15+ minutes late. With calm weather the same flights would average 31%. From the 1:00 PM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 38 departures scheduled from Orange County 3–6 PM Monday an average 48% chance of leaving 15+ minutes late. With calm weather the same flights would average 31%. From the 9:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 55 departures scheduled from Orange County noon–3 PM Monday an average 48% chance of leaving 15+ minutes late. With calm weather the same flights would average 29%. From the 9:00 AM PST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 16 arrivals that landed between 9:40 PM and 10:40 PM PST, 3 reached the gate at least 15 minutes late. Typically 18% of arrivals at Orange County 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 28% for 31 minutes across 16 checks, each with at least 12 flights and current data.
Of 15 departures that took off between 8:19 PM and 9:19 PM PST, 12 left at least 15 minutes late. Orange County typically sees 29% 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.
Of 12 departures that took off between 6:14 PM and 7:14 PM PDT, 7 left at least 15 minutes late. Orange County typically sees 28% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 6 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
Of 14 arrivals that landed between 6:04 PM and 7:04 PM PDT, 7 reached the gate at least 15 minutes late. Typically 18% of arrivals at Orange County arrive that late (US DOT on-time data, last 12 published months, all arrivals). Measured by Tailodds from FAA flight data against airline schedules.
What changed: 63% → 57% since the 2:00 PM PDT forecast (same model, same window)
Tailodds’ model gives the 29 departures scheduled from Orange County 6–9 PM Friday an average 57% chance of leaving 15+ minutes late. With calm weather the same flights would average 34%. From the 4:00 PM PDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
What changed: 54% → 61% since the 11:00 AM PDT forecast (same model, same window)
Tailodds’ model gives the 26 departures scheduled from Orange County 3–6 PM Friday an average 61% chance of leaving 15+ minutes late. With calm weather the same flights would average 35%. From the 2:00 PM PDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 13 arrivals that landed between 8:02 PM and 9:02 PM PDT, 6 reached the gate at least 15 minutes late. Typically 18% of arrivals at Orange County arrive that late (US DOT on-time data, last 12 published months, all arrivals). Measured by Tailodds from FAA flight data against airline schedules.
What changed: 52% → 67% since the 12:00 PM PDT forecast (same model, same window)
Tailodds’ model gives the 28 departures scheduled from Orange County 6–9 PM Thursday an average 67% chance of leaving 15+ minutes late. With calm weather the same flights would average 38%. From the 4:00 PM PDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 28 departures scheduled from Orange County 6–9 PM Thursday an average 40% chance of leaving 15+ minutes late. With calm weather the same flights would average 34%. From the 6:00 AM PDT forecast (model famA-fc-v3+famB-sd-v4i). The model changed since the previous item (from famA-fc-v3), so some or all of this change comes from the new model rather than new information. This is a forecast, not a report of delays.
Probability 40%Horizon 10.5 hModel famA-fc-v3+famB-sd-v4iModel changed
Tailodds’ model gives the 29 departures scheduled from Orange County 3–6 PM Thursday an average 39% chance of leaving 15+ minutes late. With calm weather the same flights would average 33%. From the 6:00 AM PDT forecast (model famB-sd-v4i). The model changed since the previous item (from famA-fc-v3), so some or all of this change comes from the new model rather than new information. This is a forecast, not a report of delays.
Probability 39%Horizon 7.5 hModel famB-sd-v4iModel changed
Of 14 arrivals that landed between 5:59 PM and 6:59 PM PDT, 7 reached the gate at least 15 minutes late. Typically 18% of arrivals at Orange County arrive that late (US DOT on-time data, last 12 published months, all arrivals). Measured by Tailodds from FAA flight data against airline schedules.
Tailodds’ model gives the 26 departures scheduled from Orange County 6–9 PM Monday an average 42% chance of leaving 15+ minutes late. With calm weather the same flights would average 22%. From the 2:00 PM PDT forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
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Observed
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