Flight OddsUnited Airlines · St. Louis, MO to San Francisco, CA · 16 flights observed, 2026-01-06 to 2026-02-09 · 1,735 mi
UA5218 covers more than one route in the data window — the stats below are for STL → SFO, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA5218 on time?
Across 16 flights on STL → SFO from 2026-01-06 to 2026-02-09, UA5218 arrived within 15 minutes of schedule 93% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +10 min or later. 6% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 14 | 93% |
| 16-30 min | 1 | 7% |
| 31-60 min | 0 | 0% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 10 | 100% | -9 min |
| 2026-02 | 5 | 80% | -20 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 5 | 100% |
| Tue | 1 | 100% |
| Wed | No data | — |
| Thu | No data | — |
| Fri | 5 | 100% |
| Sat | No data | — |
| Sun | 4 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…