Showing Southwest only (incl. its regional partners)All airlines ×
9 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines
No nonstop, and no clear pattern: the best connection reaches Salt Lake City on time 4 times in 5.
Flights, best and worst
Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.
No Southwest flight on this route ran 150+ times in the year.
Nonstops by airline and airport
Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
| Southwest | STL | SLC | – | 67%few flights | 0.0% | 9 | Not flying now |
Alternatives with one stop
All connections →| SouthwestDetails → | STL 05:45 → PHX 06:55WN 3967 | 50m Phoenix | PHX 07:45 → SLC 10:25WN 3339 | 5h 40m | 83% | 80% |
| SouthwestDetails → | STL 05:45 → DEN 07:00WN 3909 | 3h 05m Denver | DEN 10:05 → SLC 11:45WN 4027 | 6h 55m | 100% | 80% |
| SouthwestDetails → | STL 05:40 → MDW 06:45WN 1008 | 3h 17m Chicago | MDW 10:02 → SLC 12:28WN 2951 | 7h 47m | 100% | 79% |
About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON