Tuesday, October 6 · our forecast odds · issued Mon 7:00 AM ET · 3 nonstops

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

Safest bet that day AA 4806 ROC 06:05 → BOS 07:35 · 3% chance 15+ min late · usually 93% on time Riskiest AA 4171 ROC 12:00 → BOS 13:26 · 9% chance 15+ min late · usually 86% on time

Against a calm day 6% average chance a nonstop arrives 15+ min late; 6% 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.


AA 4806 American flown by Republic Flight history →	ROC 06:05	BOS 07:35	3%	2%	0.6%	93%
YX 4703 Republic	ROC 18:53	BOS 20:52	6%	3%	0.7%	no record
AA 4171 American flown by Envoy Flight history →	ROC 12:00	BOS 13:26	9%	2%	0.7%	86%

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