Flight OddsSFO → STL United Airlines
United Airlines · San Francisco, CA to St. Louis, MO · 439 flights, 2025-07-01 to 2026-06-30 · aggregated across 16 flight numbers
On-time arrival
80%
Median delay
-9 min
90th percentile
+41 min
Cancellation rate
2%
How on-time is United Airlines from SFO to STL?
Across every United Airlines flight number on SFO → STL (439 flights, 2025-07-01 to 2026-06-30), 80% arrived within 15 minutes of schedule. Median arrival delay -9 min; the worst 10% ran +41 min or later. 2% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 344 | 80% |
| 16-30 min | 26 | 6% |
| 31-60 min | 34 | 8% |
| 61-120 min | 17 | 4% |
| 2+ hrs | 9 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 51 | 69% | +10 min |
| 2025-08 | 31 | 84% | 0 min |
| 2025-09 | 30 | 90% | -8 min |
| 2025-10 | 31 | 84% | -4 min |
| 2025-11 | 29 | 86% | -1 min |
| 2025-12 | 32 | 75% | +7 min |
| 2026-01 | 39 | 95% | -7 min |
| 2026-02 | 32 | 78% | -1 min |
| 2026-03 | 31 | 90% | +25 min |
| 2026-04 | 49 | 71% | +13 min |
| 2026-05 | 45 | 69% | +9 min |
| 2026-06 | 30 | 83% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 63 | 76% |
| Tue | 53 | 83% |
| Wed | 61 | 79% |
| Thu | 67 | 75% |
| Fri | 61 | 89% |
| Sat | 57 | 86% |
| Sun | 68 | 75% |
UA flight numbers on SFO → STL
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…