Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · 6 nonstops

Sun, Oct 11: WN 3894 at 06:30 is the safest bet, 5% chance of being 15+ min late; evening flights run 36–39%.

Safest bet that day WN 3894 SLC 06:30 → AUS 10:31 · 5% chance 15+ min late Riskiest WN 1567 SLC 16:50 → AUS 20:40 · 39% chance 15+ min late

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.


WN 3894 Southwest	SLC 06:30	AUS 10:31	5%	2%	0.6%	no record
DL 2671 Delta Flight history →	SLC 07:45	AUS 11:25	13%	4%	0.7%	91%
DL 3955 Delta flown by SkyWest Flight history →	SLC 10:45	AUS 14:50	20%	5%	0.7%	83%
DL 2689 Delta Flight history →	SLC 13:19	AUS 17:07	27%	6%	0.8%	88%worse than usual
DL 2728 Delta Flight history →	SLC 17:45	AUS 21:30	36%	11%	1.2%	82%worse than usual
WN 1567 Southwest	SLC 16:50	AUS 20:40	39%	12%	1.0%	no record

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