Sourced developments at US airports: what the FAA reports at every airport, and what we measure and our model forecasts at the busiest ones.
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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 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%
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.
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 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%
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.
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 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 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.
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.
Of 16 departures that took off between 9:32 PM and 10:32 PM MST, 8 left at least 15 minutes late. Salt Lake City typically sees 14% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 10 PM hour). Measured by Tailodds from FAA flight data against airline schedules.
Of 26 departures that took off between 2:53 PM and 3:53 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 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 25 departures that took off between 2:53 PM and 3:53 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 3 PM hour). Measured by Tailodds from FAA flight data against airline schedules. The late share has stayed at or below 26% for 30 minutes across 14 checks, each with at least 12 flights and current data.
Of 24 departures that took off between 9:29 AM and 10:29 AM MST, 0 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 15 checks, each with at least 12 flights and current data.
Window 9:29 AM–10:29 AM MSTSample 24 flightsLate 0%Typical 11%
Of 23 departures that took off between 2:47 PM and 3:47 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 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 arrivals that landed between 1:43 PM and 2:43 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 30 departures that took off between 8:42 PM and 9:42 PM MST, 3 left at least 15 minutes late. Salt Lake City typically sees 15% of departures in this hour leave that late (US DOT on-time data, last 12 published months, departures in the 9 PM hour). 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 32 arrivals that landed between 7:04 PM and 8:04 PM MST, 2 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 17 departures that took off between 5:33 PM and 6:33 PM MST, 3 left at least 15 minutes late. Salt Lake City typically sees 25% 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. The late share has stayed at or below 30% for 32 minutes across 16 checks, each with at least 12 flights and current data.
Tailodds’ model gives the 41 departures scheduled from Salt Lake City 9 PM–midnight Sunday an average 45% chance of leaving 15+ minutes late. With calm weather the same flights would average 26%. From the 5:00 PM MST forecast (model famB-sd-v4i). This is a forecast, not a report of delays.
Tailodds’ model gives the 48 departures scheduled from Salt Lake City noon–3 PM Sunday an average 32% chance of leaving 15+ minutes late. With calm weather the same flights would average 24%. From the 2:00 AM MST forecast (model famB-sd-v4i). The model changed since the previous item (from famA-fc-v3+famB-sd-v4i), 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 32%Horizon 8.6 hModel famB-sd-v4iModel changed
Tailodds’ model gives the 48 departures scheduled from Salt Lake City 6–9 PM Sunday an average 43% chance of leaving 15+ minutes late. With calm weather the same flights would average 27%. From the 9:00 PM MDT forecast (model famA-fc-v3). This is a forecast, not a report of delays.
Of 20 arrivals that landed between 9:57 PM and 10:57 PM MDT, 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.
Source: Tailodds measurement of FAA flight data against airline schedulesTimeline (1)View SLC
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