Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Mon 4:00 PM ET · 3 nonstops

Sat, Oct 10 looks like a normal day here: all 3 nonstops are 8–18% likely to arrive 15+ min late.

Safest bet that day AA 5620 TYS 06:00 → PHL 07:56 · 8% chance 15+ min late · usually 86% on time Riskiest OH 9952 TYS 14:19 → PHL 16:18 · 18% chance 15+ min late

Every nonstop on Sat, Oct 10

12-month record →

Ranked by the chance of arriving 15+ minutes late (typical odds: the weather this date has had in past years), with each flight’s on-time record over Aug 2025 – Jul 2026 beside it. Times are local. Pick a flight for its forecast. Click a column to sort.


AA 5620 American flown by PSA Flight history →	TYS 06:00	PHL 07:56	8%	5%	1.5%	86%
PT 6079 Piedmont	TYS 12:45	PHL 14:50	17%	6%	1.3%	no record
OH 9952 PSA	TYS 14:19	PHL 16:18	18%	8%	1.5%	no record

How these are worked out. Each flight’s odds are our forecast for that day (typical odds until the weather forecast covers it); flights of airlines we don’t forecast yet use their 12-month record and are marked. Makes the connection: the first flight’s 12-month lateness curve, scaled so its chance of arriving 15+ min late matches the day’s forecast, at the layover minus the 45-minute minimum (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled × second flight within 15 minutes, each from the day’s forecast.

About this data: forecast odds from our model for Sat, Oct 10 (newest published update); 12-month records from US DOT on-time data, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. JSON