Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Sun 4:00 PM ET · 5 nonstops

Fri, Oct 9 looks like a normal day here: all 3 nonstops are 8–17% likely to arrive 15+ min late.

Safest bet that day DL 5607 PIT 10:25 → DTW 11:35 · 8% chance 15+ min late · usually 91% on time Riskiest DL 3598 PIT 19:42 → DTW 21:00 · 17% chance 15+ min late · usually 75% 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. Dimmed: airlines we don’t forecast yet, shown with their 12-month record if they usually fly that weekday.


DL 5607 Delta flown by Republic Flight history →	PIT 10:25	DTW 11:35	8%	3%	0.6%	91%
DL 5766 Delta flown by Republic Flight history →	PIT 17:55	DTW 19:08	15%	4%	0.6%	69%
DL 3598 Delta flown by SkyWest Flight history →	PIT 19:42	DTW 21:00	17%	8%	0.6%	75%
DL 5319 Delta flown by Endeavor no forecast: 12-month record	PIT 06:30	DTW 07:44	14%	7%	5.8%	86%
DL 5303 Delta flown by Endeavor no forecast: 12-month record	PIT 12:25	DTW 13:34	14%	7%	2.3%	86%

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