Wednesday, October 7 · typical odds for a Wednesday (too early for a weather forecast) · issued Sat 12:00 PM ET · 4 nonstops

Wed, Oct 7 looks like a normal day here: all 4 nonstops are 6–14% likely to arrive 15+ min late.

Safest bet that day DL 3996 IAD 06:00 → MSP 07:53 · 6% chance 15+ min late · usually 91% on time Riskiest DL 3783 IAD 18:46 → MSP 20:56 · 14% chance 15+ min late · usually 80% on time

Every nonstop on Wed, Oct 7

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 3996 Delta flown by SkyWest Flight history →	IAD 06:00	MSP 07:53	6%	5%	0.8%	91%
DL 3699 Delta flown by SkyWest Flight history →	IAD 11:35	MSP 13:35	8%	5%	0.7%	87%
UA 2604 United	IAD 08:46	MSP 10:33	9%	4%	0.6%	no record
DL 3783 Delta flown by SkyWest Flight history →	IAD 18:46	MSP 20:56	14%	7%	0.8%	80%

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 Wed, Oct 7 (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