Wednesday, October 7 · typical odds for a Wednesday (too early for a weather forecast) · issued Sat 12:00 PM ET · 3 nonstops

Wed, Oct 7 looks like a normal day here: all 3 nonstops are 13–22% likely to arrive 15+ min late.

Safest bet that day DL 696 SLC 00:03 → BOS 06:29 · 13% chance 15+ min late · usually 92% on time Riskiest DL 702 SLC 17:15 → BOS 23:47 · 22% chance 15+ min late · usually 79% on time

Every nonstop on Wed, Oct 7

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 696 Delta Flight history →	SLC 00:03	BOS 06:29	13%	2%	0.7%	92%
DL 657 Delta Flight history →	SLC 09:50	BOS 16:36	19%	4%	0.7%	82%
DL 702 Delta Flight history →	SLC 17:15	BOS 23:47	22%	7%	0.7%	79%

Alternatives with one stop that day

All connections →


United Details →	SLC 05:15 → DEN 06:54UA 5683 · flown by SkyWest	51m Denver	DEN 07:45 → BOS 13:49UA 558	6h 34m	95%	84%
United Details →	SLC 07:00 → DEN 08:42UA 1232	58m Denver	DEN 09:40 → BOS 15:44UA 1232	6h 44m	92%	72%
United Details →	SLC 08:00 → ORD 12:20UA 1502	59m Chicago	ORD 13:19 → BOS 16:41UA 2401	6h 41m	85%	46%

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 Wed, Oct 7 (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