Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Sun 8:00 PM ET · connections flying that day

Sat, Oct 10 looks like a normal day here: all 2 nonstops are 10–17% likely to arrive 15+ min late.

Nonstops that day

All 2 nonstops →


DL 2455 Delta Flight history →	SLC 09:40	STL 13:33	10%	2%	0.4%	92%
DL 2666 Delta Flight history →	SLC 17:10	STL 21:00	17%	4%	0.4%	81%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach St Louis on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (St Louis is 1 h ahead of Salt Lake City). Layovers up to 4 hours. Pick a connection for its 12-month details.


Delta Details →	SLC 08:30 → MSP 11:58DL 2916	3h 16m Minneapolis	MSP 15:14 → STL 16:50DL 1224	7h 20m	99%	91%
Delta Details →	SLC 06:00 → DTW 11:24DL 2289	3h 09m Detroit	DTW 14:33 → STL 15:17DL 1371	8h 17m	99%	87%
Delta Details →	SLC 14:00 → MSP 17:32DL 2936	2h 58m Minneapolis	MSP 20:30 → STL 22:03DL 1609	7h 03m	98%	87%
United Details →	SLC 05:15 → DEN 06:54UA 5683 · flown by SkyWest	2h 41m Denver	DEN 09:35 → STL 12:42UA 652	6h 27m	99%	86%
Delta Details →	SLC 07:00 → ATL 12:44DL 907	3h 08m Atlanta	ATL 15:52 → STL 16:39DL 543	8h 39m	100%	83%
United Details →	SLC 08:30 → DEN 10:27UA 5642 · flown by SkyWest	2h 58m Denver	DEN 13:25 → STL 16:33UA 1639	7h 03m	99%	81%
Frontier Details →	SLC 11:51 → DEN 13:39F9 3982	2h 31m Denver	DEN 16:10 → STL 19:23F9 3302	6h 32m	97%	80%
Delta Details →	SLC 11:00 → ATL 16:44DL 885	3h 10m Atlanta	ATL 19:54 → STL 20:37DL 2833	8h 37m	98%	79%

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 Sat, Oct 10 (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