No clear winner: United’s SFO → STL flights land within a few points of 4 in 5 on time whatever the hour.
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.
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 United flight on this route ran 150+ times in the year.
All 1 United flights in the current schedule
Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.
| UA 2090 | SFO 12:12 | STL 18:17 | 4h 05m | 72 | 75% | 0.0% | 61 min |
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.
| United | SFO | STL | 4h 11m | 80% | 1.4% | 418 | Flying now |
Alternatives with one stop
All connections →| UnitedDetails → | SFO 05:00 → DEN 08:35UA 1479 | 1h 00m Denver | DEN 09:35 → STL 12:42UA 652 | 5h 42m | 96% | 80% |
| UnitedDetails → | SFO 08:31 → DEN 12:22UA 2348 | 1h 03m Denver | DEN 13:25 → STL 16:33UA 1639 | 6h 02m | 87% | 75% |
| UnitedDetails → | SFO 12:43 → DEN 16:35UA 540 | 59m Denver | DEN 17:34 → STL 20:43UA 1422 | 6h 00m | 76% | 55% |
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