Monday, October 12 · typical odds for a Monday (too early for a weather forecast) · issued Tue 12:00 AM ET · 4 nonstops

Mon, Oct 12: DL 2592 at 06:30 is the safest bet, 5% chance of being 15+ min late; evening flights run 16–18%.

Safest bet that day DL 2592 SAT 06:30 → SLC 08:21 · 5% chance 15+ min late · usually 95% on time Riskiest UA 3917 SAT 23:33 → SLC 01:40 · 18% chance 15+ min late

Every nonstop on Mon, Oct 12

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 2592 Delta Flight history →	SAT 06:30	SLC 08:21	5%	3%	0.7%	95%
DL 930 Delta Flight history →	SAT 12:39	SLC 14:30	13%	4%	0.7%	80%
DL 1507 Delta	SAT 17:59	SLC 19:51	16%	5%	0.8%	no record
UA 3917 United	SAT 23:33	SLC 01:40	18%	7%	1.3%	no record

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 Mon, Oct 12 (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