Today looks like a normal day here: all 3 nonstops are 4–10% likely to arrive 15+ min late.

Safest bet today DL 4069 SBA 05:50 → SLC 08:50 · 4% chance 15+ min late · usually 100% on time Riskiest DL 3853 SBA 16:50 → SLC 19:51 · 10% chance 15+ min late · usually 93% on time

Against a calm day 7% average chance a nonstop arrives 15+ min late; 7% for the same flights on a calm-weather day

Every nonstop today

12-month record →

Ranked by the chance of arriving 15+ minutes late, 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 4069 Delta flown by SkyWest Flight history →	SBA 05:50	SLC 08:50	4%	3%	0.4%	100%
DL 3841 Delta flown by SkyWest Flight history →	SBA 12:40	SLC 15:41	7%	4%	0.3%	96%
DL 3853 Delta flown by SkyWest Flight history →	SBA 16:50	SLC 19:51	10%	4%	0.7%	93%

How these are worked out. Each flight’s odds are our forecast for that day; 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 5 (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