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

Fri, Oct 9: UA 2031 at 06:30 is the safest bet, 5% chance of being 15+ min late; evening flights run 10–18%.

Safest bet that day UA 2031 IAD 06:30 → DEN 08:22 · 5% chance 15+ min late · usually 100% on time Riskiest UA 599 IAD 17:41 → DEN 19:45 · 18% chance 15+ min late · usually 74% 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.


UA 2031 United Flight history →	IAD 06:30	DEN 08:22	5%	2%	0.6%	100%
UA 792 United Flight history →	IAD 08:15	DEN 10:10	7%	2%	0.6%	95%
UA 1865 United Flight history →	IAD 10:13	DEN 12:05	8%	3%	0.6%	93%
UA 495 United Flight history →	IAD 22:23	DEN 00:30	10%	3%	0.6%	84%
UA 1587 United Flight history →	IAD 12:48	DEN 14:42	10%	4%	0.6%	92%
UA 2667 United Flight history →	IAD 19:20	DEN 21:27	12%	5%	0.6%	74%
UA 1126 United Flight history →	IAD 14:35	DEN 16:29	14%	5%	0.5%	82%
UA 395 United Flight history →	IAD 15:56	DEN 18:03	16%	5%	0.6%	79%
UA 599 United Flight history →	IAD 17:41	DEN 19:45	18%	6%	0.5%	74%

Alternatives with one stop that day

All connections →


Delta Details →	IAD 06:00 → DTW 07:35DL 3826 · flown by SkyWest	1h 05m Detroit	DTW 08:40 → DEN 09:47DL 1113	5h 47m	91%	82%
Delta Details →	IAD 10:21 → ATL 12:05DL 1324	50m Atlanta	ATL 12:55 → DEN 14:00DL 957	5h 39m	90%	75%
United Details →	IAD 12:40 → IND 14:29UA 3402 · flown by Republic	53m Indianapolis	IND 15:22 → DEN 16:12UA 2821	5h 32m	84%	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