United Airlines · San Francisco, CA to St. Louis, MO · 135 flights observed, 2025-07-01 to 2025-12-17 · 1,735 mi
UA336 covers more than one route in the data window — the stats below are for SFO → STL, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA336 on time?
Across 135 flights on SFO → STL from 2025-07-01 to 2025-12-17, UA336 arrived within 15 minutes of schedule 85% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +24 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 113 | 85% |
| 16-30 min | 10 | 8% |
| 31-60 min | 6 | 5% |
| 61-120 min | 2 | 2% |
| 2+ hrs | 2 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 26 | 73% | +6 min |
| 2025-08 | 31 | 84% | 0 min |
| 2025-09 | 24 | 92% | -11 min |
| 2025-10 | 6 | 100% | -15 min |
| 2025-11 | 29 | 86% | -1 min |
| 2025-12 | 17 | 88% | -8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 20 | 75% |
| Tue | 21 | 81% |
| Wed | 21 | 95% |
| Thu | 18 | 83% |
| Fri | 19 | 100% |
| Sat | 15 | 80% |
| Sun | 19 | 79% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…