Today looks like a normal day here: all 3 nonstops are 16–21% likely to arrive 15+ min late.

Safest bet today DL 3533 DTW 11:31 → SYR 13:01 · 16% chance 15+ min late · usually 76% on time Riskiest DL 3565 DTW 15:04 → SYR 16:35 · 21% chance 15+ min late · usually 79% on time

Against a calm day 18% average chance a nonstop arrives 15+ min late; 17% 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. 1 flight that already left today is not shown.


DL 3533 Delta flown by SkyWest Flight history →	DTW 11:31	SYR 13:01	16%	8%	0.2%	76%
DL 1689 Delta Flight history →	DTW 21:35	SYR 22:58	17%	4%	0.6%	78%
DL 3565 Delta flown by SkyWest Flight history →	DTW 15:04	SYR 16:35	21%	9%	0.3%	79%

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