Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · 4 nonstops

Sun, Oct 11: DL 2664 at 06:00 is the safest bet, 9% chance of being 15+ min late; evening flights run 22–25%.

Safest bet that day DL 2664 BUF 06:00 → ATL 08:10 · 9% chance 15+ min late · usually 86% on time Riskiest DL 2266 BUF 17:12 → ATL 19:23 · 25% chance 15+ min late · usually 80% on time

Every nonstop on Sun, Oct 11

12-month record →

Ranked by the chance of arriving 15+ minutes late (typical odds: the weather this date has had in past years), 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 2664 Delta Flight history →	BUF 06:00	ATL 08:10	9%	3%	0.7%	86%
DL 1384 Delta Flight history →	BUF 12:16	ATL 14:22	18%	4%	0.7%	84%
DL 2050 Delta Flight history →	BUF 20:18	ATL 22:28	22%	5%	0.8%	84%
DL 2266 Delta Flight history →	BUF 17:12	ATL 19:23	25%	5%	0.8%	80%

How these are worked out. Each flight’s odds are our forecast for that day (typical odds until the weather forecast covers it); 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 Sun, Oct 11 (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