Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Sun 8:00 PM ET · 3 nonstops

Sat, Oct 10 looks like a normal day here: all 2 nonstops are 9–10% likely to arrive 15+ min late.

Safest bet that day OH 5341 PHL 10:35 → GRR 12:54 · 9% chance 15+ min late Riskiest AA 5493 PHL 21:10 → GRR 23:21 · 10% chance 15+ min late · usually 73% on time

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. Dimmed: airlines we don’t forecast yet, shown with their 12-month record if they usually fly that weekday.


OH 5341 PSA	PHL 10:35	GRR 12:54	9%	3%	1.2%	no record
AA 5493 American flown by PSA Flight history →	PHL 21:10	GRR 23:21	10%	5%	1.7%	73%
AA 5905 American flown by Piedmont no forecast: 12-month record	PHL 21:51	GRR 00:10	0%	0%	10.0%	100%

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