Sourced developments at US airports: what the FAA reports at every airport, and what we measure and our model forecasts at the busiest ones.
Live · checked FAA national advisories 2 minFAA NAS status 1 minForecast cycle 86 minLightning 1 minWeather observations 4 minFAA surface data 5 minFAA flight data 5 min
The FAA issued this advisory: “EVENT TIME: 13/2053 - 14/0400 DUE TO EXTRAORDINARY CIRCUMSTANCES AND FOR REASONS OF SAFETY. ATTENTION ALL AIRCRAFT OPERATORS, BY ORDER OF THE FEDERAL AVIATION COMMAND CENTER ALL AIRPORTS ARE GROUND STOPPED. ALL DEPARTING TRAFFIC SHOULD REMAIN GROUND STOPPED UNTIL FURTHER NOTICE. INBOUND INTERNATIONAL FLIGHTS WILL BE MANAGED ON A CASE BY CASE BASIS.” This is an advisory bulletin; its text defines the affected flights and time period.
The FAA issued this advisory: “EVENT TIME: 13/2030 - 14/0500 THE ATCSCC HAS ACTIVATED THE DIVERSION RECOVERY TOOL FOR ALL AIRPORTS. CUSTOMERS SHOULD ENSURE THAT DVRSN IS INCLUDED IN FLIGHT PLAN REMARKS OF DIVERTED AIRCRAFT. NOTE THAT IF THERE IS A GROUND DELAY PROGRAM OR GROUND STOP IN EFFECT FOR THE DESTINATION AIRPORT DIVERTED FLIGHTS ARE NOT AUTOMATICALLY EXEMPT AND WILL STILL RECEIVE AN EDCT. UNLESS OTHERWISE NOTIFIED, DIVERSION RECOVERY WILL CLOSE AT THE END OF THE EVENT TIME SPECIFIED IN THIS ADVISORY.” This is an advisory bulletin; its text defines the affected flights and time period.
Of 13 arrivals that landed between 12:45 PM and 1:45 PM MST, 6 reached the gate at least 15 minutes late. Typically 15% of arrivals at Salt Lake City 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 36 departures scheduled from Salt Lake City noon–3 PM Friday an average 28% chance of leaving 15+ minutes late. With calm weather the same flights would average 18%. From the 3:00 AM MST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 36 departures scheduled from Salt Lake City noon–3 PM Friday an average 48% chance of leaving 15+ minutes late. With calm weather the same flights would average 19%. From the 2:00 AM MST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 19 arrivals that landed between 9:52 PM and 10:52 PM MST, 10 reached the gate at least 15 minutes late. Typically 15% of arrivals at Salt Lake City arrive that late (US DOT on-time data, last 12 published months, all arrivals). Measured by Tailodds from FAA flight data against airline schedules.
Of 18 arrivals that landed between 9:04 PM and 10:04 PM MST, 3 reached the gate at least 15 minutes late. Typically 15% of arrivals at Salt Lake City 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 25% for 31 minutes across 16 checks, each with at least 12 flights and current data.
Of 16 arrivals that landed between 8:02 PM and 9:02 PM MST, 9 reached the gate at least 15 minutes late. Typically 15% of arrivals at Salt Lake City arrive that late (US DOT on-time data, last 12 published months, all arrivals). Measured by Tailodds from FAA flight data against airline schedules.
Of 22 departures that took off between 9:17 AM and 10:17 AM MST, 2 left at least 15 minutes late. Salt Lake City typically sees 11% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 9 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.
Window 9:17 AM–10:17 AM MSTSample 22 flightsLate 9%Typical 11%
Source: Tailodds measurement of FAA flight data against airline schedulesTimeline (2)View SLC
Of 13 departures that took off between 8:24 AM and 9:24 AM MST, 7 left at least 15 minutes late. Salt Lake City typically sees 8% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 8 AM hour). Measured by Tailodds from FAA flight data against airline schedules.
Window 8:24 AM–9:24 AM MSTSample 13 flightsLate 54%Typical 8%
Source: Tailodds measurement of FAA flight data against airline schedulesTimeline (2)View SLC
Tailodds’ model gives the 38 departures scheduled from Salt Lake City noon–3 PM Tuesday an average 19% chance of leaving 15+ minutes late. With calm weather the same flights would average 13%. From the 3:00 AM MST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 38 departures scheduled from Salt Lake City noon–3 PM Tuesday an average 41% chance of leaving 15+ minutes late. With calm weather the same flights would average 13%. From the 2:00 AM MST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 24 arrivals that landed between 1:40 PM and 2:40 PM MST, 0 reached the gate at least 15 minutes late. Typically 15% of arrivals at Salt Lake City 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 25% for 31 minutes across 16 checks, each with at least 12 flights and current data.
Of 13 arrivals that landed between 12:42 PM and 1:42 PM MST, 7 reached the gate at least 15 minutes late. Typically 15% of arrivals at Salt Lake City arrive that late (US DOT on-time data, last 12 published months, all arrivals). Measured by Tailodds from FAA flight data against airline schedules.
Of 28 departures that took off between 9:29 AM and 10:29 AM MST, 2 left at least 15 minutes late. Salt Lake City typically sees 11% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 9 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.
Window 9:29 AM–10:29 AM MSTSample 28 flightsLate 7%Typical 11%
Source: Tailodds measurement of FAA flight data against airline schedulesTimeline (2)View SLC
Of 14 departures that took off between 8:26 AM and 9:26 AM MST, 7 left at least 15 minutes late. Salt Lake City typically sees 8% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 8 AM hour). Measured by Tailodds from FAA flight data against airline schedules.
Window 8:26 AM–9:26 AM MSTSample 14 flightsLate 50%Typical 8%
Source: Tailodds measurement of FAA flight data against airline schedulesTimeline (2)View SLC
Tailodds’ model gives the 36 departures scheduled from Salt Lake City noon–3 PM Monday an average 24% chance of leaving 15+ minutes late. With calm weather the same flights would average 17%. From the 3:00 AM MST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 36 departures scheduled from Salt Lake City noon–3 PM Monday an average 49% chance of leaving 15+ minutes late. With calm weather the same flights would average 17%. From the 2:00 AM MST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Of 28 departures that took off between 5:11 PM and 6:11 PM MST, 4 left at least 15 minutes late. Salt Lake City typically sees 19% 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 29% for 31 minutes across 16 checks, each with at least 12 flights and current data.
Of 12 departures that took off between 4:23 PM and 5:23 PM MST, 7 left at least 15 minutes late. Salt Lake City typically sees 22% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 4 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
Of 18 departures that took off between 2:49 PM and 3:49 PM MST, 0 left at least 15 minutes late. Salt Lake City typically sees 16% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 3 PM hour). Measured by Tailodds from FAA flight data against airline schedules. The late share has stayed at or below 26% for 31 minutes across 16 checks, each with at least 12 flights and current data.
Of 23 departures that took off between 1:33 PM and 2:33 PM MST, 10 left at least 15 minutes late. Salt Lake City typically sees 23% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 2 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
Of 16 departures that took off between 1:18 PM and 2:18 PM MST, 2 left at least 15 minutes late. Salt Lake City typically sees 16% 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 26% for 31 minutes across 16 checks, each with at least 12 flights and current data.
Of 19 departures that took off between 11:45 AM and 12:45 PM MST, 9 left at least 15 minutes late. Salt Lake City typically sees 18% 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 41 departures scheduled from Salt Lake City noon–3 PM Saturday an average 24% chance of leaving 15+ minutes late. With calm weather the same flights would average 20%. From the 3:00 AM MST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.