Tuesday, October 6 · our forecast odds · issued Mon 4:00 AM ET · 3 nonstops

Tomorrow looks like a normal day here: all 3 nonstops are 7–14% likely to arrive 15+ min late.

Safest bet that day DL 3123 SLC 09:50 → SAT 13:36 · 7% chance 15+ min late · usually 83% on time Riskiest DL 2797 SLC 20:40 → SAT 00:26 · 14% chance 15+ min late · usually 82% on time

Against a calm day 10% average chance a nonstop arrives 15+ min late; 10% for the same flights on a calm-weather day

Every nonstop on Tue, Oct 6

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 3123 Delta Flight history →	SLC 09:50	SAT 13:36	7%	2%	0.6%	83%
DL 2199 Delta	SLC 13:30	SAT 17:23	10%	3%	0.6%	no record
DL 2797 Delta Flight history →	SLC 20:40	SAT 00:26	14%	2%	0.6%	82%

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 Tue, Oct 6 (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