Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · 3 nonstops

Sun, Oct 11: AS 1 at 08:00 is the safest bet, 19% chance of being 15+ min late; evening flights run 27–31%.

Safest bet that day AS 1 DCA 08:00 → SEA 10:58 · 19% chance 15+ min late · usually 82% on time Riskiest AS 3 DCA 17:00 → SEA 19:59 · 31% chance 15+ min late · usually 75% 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.


AS 1 Alaska Flight history →	DCA 08:00	SEA 10:58	19%	5%	0.7%	82%
DL 786 Delta Flight history →	DCA 16:35	SEA 19:41	27%	11%	1.3%	66%
AS 3 Alaska Flight history →	DCA 17:00	SEA 19:59	31%	12%	1.1%	75%

Alternatives with one stop that day

All connections →


Delta Details →	DCA 06:30 → MSP 08:12DL 1193	53m Minneapolis	MSP 09:05 → SEA 10:59DL 868	7h 29m	94%	82%
Alaska Details →	DCA 17:16 → PDX 20:04AS 9	1h 26m Portland	PDX 21:30 → SEA 22:27AS 2421 · flown by Horizon	8h 11m	89%	79%
Delta Details →	DCA 09:00 → ATL 10:50DL 455	1h 43m Atlanta	ATL 12:33 → SEA 14:50DL 629	8h 50m	95%	77%

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