Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · 5 nonstops

Sun, Oct 11: DL 808 at 08:30 is the safest bet, 10% chance of being 15+ min late; the others run 12–26%.

Safest bet that day DL 808 TPA 08:30 → DTW 11:08 · 10% chance 15+ min late · usually 93% on time Riskiest DL 1243 TPA 18:05 → DTW 20:53 · 26% chance 15+ min late · usually 67% 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 808 Delta Flight history →	TPA 08:30	DTW 11:08	10%	3%	1.0%	93%
DL 2852 Delta Flight history →	TPA 10:41	DTW 13:23	12%	3%	1.0%	85%
F9 1035 Frontier Flight history →	TPA 07:51	DTW 10:40	15%	5%	1.3%	87%
DL 2587 Delta Flight history →	TPA 14:00	DTW 16:48	21%	5%	1.4%	76%
DL 1243 Delta Flight history →	TPA 18:05	DTW 20:53	26%	7%	1.0%	67%

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