Monday, October 5 · our forecast odds · issued Sun 8:00 PM ET · 5 nonstops

Tomorrow: DL 662 at 06:35 is the safest bet, 9% chance of being 15+ min late; the others run 15–22%.

Safest bet that day DL 662 PDX 06:35 → ATL 14:14 · 9% chance 15+ min late · usually 95% on time Riskiest AS 784 PDX 07:30 → ATL 15:15 · 22% chance 15+ min late · usually 79% on time

Against a calm day 16% average chance a nonstop arrives 15+ min late; 10% for the same flights on a calm-weather day

Every nonstop on Mon, Oct 5

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.


DL 662 Delta Flight history →	PDX 06:35	ATL 14:14	9%	3%	1.3%	95%
DL 2206 Delta Flight history →	PDX 14:08	ATL 21:59	15%	5%	1.6%	85%
DL 564 Delta Flight history →	PDX 22:55	ATL 06:27	16%	6%	1.2%	76%
DL 539 Delta Flight history →	PDX 11:37	ATL 19:21	16%	5%	1.3%	86%
AS 784 Alaska Flight history →	PDX 07:30	ATL 15:15	22%	4%	0.7%	79%

Alternatives with one stop that day

All connections →


Delta Details →	PDX 09:45 → SLC 12:33DL 1203	1h 02m Salt Lake City	SLC 13:35 → ATL 19:22DL 906	6h 37m	93%	74%
United Details →	PDX 08:50 → DEN 12:24UA 2375	1h 02m Denver	DEN 13:26 → ATL 18:30UA 1671	6h 40m	94%	70%
American Details →	PDX 00:45 → DFW 06:33AA 1460	46m Dallas-Fort Worth	DFW 07:19 → ATL 10:29AA 891	6h 44m	85%	62%

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 Mon, Oct 5 (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