Today looks like a normal day here: all 3 nonstops are 9–16% likely to arrive 15+ min late.

Safest bet today DL 3899 MEM 06:00 → MSP 08:14 · 9% chance 15+ min late · usually 90% on time Riskiest DL 4063 MEM 18:39 → MSP 20:59 · 16% chance 15+ min late · usually 77% on time

Against a calm day 13% average chance a nonstop arrives 15+ min late; 10% 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 3899 Delta flown by SkyWest Flight history →	MEM 06:00	MSP 08:14	9%	4%	0.4%	90%
DL 3989 Delta flown by SkyWest Flight history →	MEM 12:09	MSP 14:22	15%	5%	0.3%	85%
DL 4063 Delta flown by SkyWest Flight history →	MEM 18:39	MSP 20:59	16%	6%	0.7%	77%

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