Today looks rough: weather pushes the average chance of arriving 15+ min late to 36%, against 20% on a calm day. Safest: YX 5640 at 18:39, 36%.

Safest bet today YX 5640 SAV 18:39 → LGA 20:50 · 36% chance 15+ min late

Weather 36% average chance a nonstop arrives 15+ min late; 20% for the same flights on a calm-weather day

Every nonstop today

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. Dimmed: airlines we don’t forecast yet, shown with their 12-month record if they usually fly that weekday.


YX 5640 Republic	SAV 18:39	LGA 20:50	36%	9%	1.3%	no record
DL 5457 Delta flown by Endeavor no forecast: 12-month record	SAV 06:00	LGA 08:11	14%	8%	3.8%	86%
DL 5267 Delta flown by Endeavor no forecast: 12-month record	SAV 12:05	LGA 14:23	31%	10%	6.1%	69%
DL 5178 Delta flown by Endeavor no forecast: 12-month record	SAV 18:50	LGA 21:10	43%	17%	10.5%	57%

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