Sunday, October 11 · typical odds for a Sunday (too early for a weather forecast) · issued Mon 12:00 AM ET · connections flying that day

Sun, Oct 11: Delta via Salt Lake City, leaving 08:15, is the safest bet: 59% chance of reaching Boise on time; the tightest one-ticket connections make it only 46% of the time.

Nonstops that day

All 2 nonstops →


DL 874 Delta Flight history →	ATL 10:31	BOI 12:53	11%	3%	0.7%	91%
DL 704 Delta Flight history →	ATL 19:30	BOI 21:57	25%	6%	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.


Delta Details →	ATL 07:40 → SEA 09:54DL 444	2h 36m Seattle	SEA 12:30 → BOI 15:11DL 3959 · 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	99%	84%
Delta Details →	ATL 07:00 → LAX 08:45DL 763	2h 59m Los Angeles	LAX 11:44 → BOI 14:46DL 3773 · flown by SkyWest	9h 46m	100%	83%
Delta Details →	ATL 07:25 → MSP 09:00DL 2668	2h 39m Minneapolis	MSP 11:39 → BOI 13:44DL 2982	8h 19m	99%	83%
Delta Details →	ATL 14:38 → SEA 16:49DL 481	2h 51m Seattle	SEA 19:40 → BOI 22:18DL 3692 · flown by SkyWest	9h 40m	98%	83%
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%	81%
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%	79%
United Details →	ATL 08:52 → DEN 10:05UA 340	1h 31m Denver	DEN 11:36 → BOI 13:35UA 2255	6h 43m	94%	77%
Tight connection: often missed
Delta Details →	ATL 08:15 → SLC 10:14DL 830	48m Salt Lake City	SLC 11:02 → BOI 12:17DL 2095	6h 02m	69%	59%
Delta Details →	ATL 17:55 → SLC 19:56DL 653	54m Salt Lake City	SLC 20:50 → BOI 22:04DL 4446 · flown by SkyWest	6h 09m	52%	40%
Delta Details →	ATL 13:55 → SLC 15:51DL 423	46m Salt Lake City	SLC 16:37 → BOI 17:51DL 2920	5h 56m	46%	35%

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