The nonstop is quickest: United STL → SFO (4h 43m), on time 62% of the time. Southwest via Love Field (6h 25m) is more reliable, 79%, but takes 1h 42m longer.
Time of day × airport
Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).
Pick an hour to see this route’s flights leaving then.
Airlines on this route
Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
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 flight on this route ran 150+ times in the year.
All 3 flights on this route →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.
Alternatives with one stop
All connections →| UnitedDetails → | STL 05:10 → DEN 06:32UA 362 | 1h 08m Denver | DEN 07:40 → SFO 09:18UA 2391 | 6h 08m | 93% | 65% |
| UnitedDetails → | STL 09:06 → DEN 10:30UA 2459 | 51m Denver | DEN 11:21 → SFO 13:04UA 1561 | 5h 58m | 82% | 59% |
| DeltaDetails → | STL 08:00 → SLC 10:12DL 2363 | 48m Salt Lake City | SLC 11:00 → SFO 12:08DL 902 | 6h 08m | 82% | 53% |
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