Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Mon 12:00 PM ET · connections flying that day

Fri, Oct 9: Delta via Salt Lake City, leaving 08:15, is the safest bet: 72% chance of reaching Boise on time; the tightest one-ticket connections make it only 63% of the time.

Nonstops that day

All 2 nonstops →


DL 874 Delta Flight history →	ATL 10:31	BOI 12:53	9%	2%	0.6%	91%
DL 704 Delta Flight history →	ATL 19:30	BOI 21:57	20%	4%	0.7%	63%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Boise on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Boise is 2 h behind Atlanta). Layovers up to 4 hours. Pick a connection for its 12-month details.


Southwest Details →	ATL 06:10 → LAS 07:15WN 209	1h 20m Las Vegas	LAS 08:35 → BOI 11:25WN 2192	7h 15m	100%	91%
Delta Details →	ATL 15:20 → SLC 17:18DL 526	3h 32m Salt Lake City	SLC 20:50 → BOI 22:04DL 4446 · flown by SkyWest	8h 44m	100%	89%
Delta Details →	ATL 07:25 → MSP 09:00DL 2668	2h 39m Minneapolis	MSP 11:39 → BOI 13:44DL 2982	8h 19m	99%	86%
United Details →	ATL 07:30 → DEN 08:51UA 340	2h 45m Denver	DEN 11:36 → BOI 13:35UA 2255	8h 05m	98%	86%
Delta Details →	ATL 07:40 → SEA 09:54DL 444	2h 36m Seattle	SEA 12:30 → BOI 15:11DL 3959 · flown by SkyWest	9h 31m	99%	86%
Delta Details →	ATL 14:45 → LAX 16:17DL 753	3h 42m Los Angeles	LAX 19:59 → BOI 22:58DL 4148 · flown by SkyWest	10h 13m	100%	85%
Delta Details →	ATL 07:15 → LAX 08:48DL 996	2h 56m Los Angeles	LAX 11:44 → BOI 14:46DL 3773 · flown by SkyWest	9h 31m	98%	85%
Delta Details →	ATL 09:50 → SEA 12:13DL 774	3h 57m Seattle	SEA 16:10 → BOI 18:46DL 3688 · flown by SkyWest	10h 56m	100%	85%
Tight connection: often missed
Delta Details →	ATL 18:00 → SLC 20:02DL 653	48m Salt Lake City	SLC 20:50 → BOI 22:04DL 4446 · flown by SkyWest	6h 04m	67%	59%
Delta Details →	ATL 13:55 → SLC 15:51DL 423	46m Salt Lake City	SLC 16:37 → BOI 17:51DL 2920	5h 56m	66%	55%
Southwest Details →	ATL 20:10 → LAS 21:30WN 210	1h 00m Las Vegas	LAS 22:30 → BOI 01:15 +1WN 185	7h 05m	63%	39%

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 Fri, Oct 9 (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