Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Sun 4:00 PM ET · 3 nonstops

Fri, Oct 9 looks like a normal day here: all 3 nonstops are 14–19% likely to arrive 15+ min late.

Safest bet that day DL 2479 ATL 10:20 → PWM 13:00 · 14% chance 15+ min late · usually 87% on time Riskiest DL 2138 ATL 20:35 → PWM 23:14 · 19% chance 15+ min late · usually 69% on time

Every nonstop on Fri, Oct 9

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.


DL 2479 Delta Flight history →	ATL 10:20	PWM 13:00	14%	2%	0.7%	87%
DL 488 Delta Flight history →	ATL 15:17	PWM 17:54	18%	5%	0.7%	59%
DL 2138 Delta Flight history →	ATL 20:35	PWM 23:14	19%	5%	0.7%	69%

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 Fri, Oct 9 (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