Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Sun 8:00 PM ET · 4 nonstops

Sat, Oct 10 looks like a normal day here: all 4 nonstops are 12–15% likely to arrive 15+ min late.

Safest bet that day UA 1980 SAN 10:11 → IAH 15:39 · 12% chance 15+ min late · usually 95% on time Riskiest UA 618 SAN 15:10 → IAH 20:31 · 15% chance 15+ min late · usually 66% on time

Every nonstop on Sat, Oct 10

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.


UA 1980 United Flight history →	SAN 10:11	IAH 15:39	12%	5%	0.7%	95%
UA 2760 United Flight history →	SAN 07:57	IAH 13:26	13%	4%	0.7%	89%
UA 2025 United	SAN 16:42	IAH 22:06	15%	8%	0.7%	no record
UA 618 United Flight history →	SAN 15:10	IAH 20:31	15%	7%	0.6%	66%

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 Sat, Oct 10 (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