Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · 3 nonstops

Sun, Oct 11: UA 2643 at 09:45 is the safest bet, 12% chance of being 15+ min late; the others run 27–40%.

Safest bet that day UA 2643 DEN 09:45 → BDL 15:37 · 12% chance 15+ min late · usually 88% on time Riskiest UA 2254 DEN 17:53 → BDL 23:44 · 40% chance 15+ min late · usually 74% on time

Every nonstop on Sun, Oct 11

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 2643 United Flight history →	DEN 09:45	BDL 15:37	12%	3%	0.6%	88%
WN 1546 Southwest	DEN 12:50	BDL 18:28	27%	4%	0.8%	no record
UA 2254 United Flight history →	DEN 17:53	BDL 23:44	40%	11%	0.7%	74%worse than usual

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 Sun, Oct 11 (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