Flight OddsUA5478 STL → IAH
United Airlines · St. Louis, MO to Houston, TX · 35 flights observed, 2025-07-01 to 2025-08-18 · 667 mi
UA5478 covers more than one route in the data window — the stats below are for STL → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
71%
Median delay
-10 min
90th percentile
+86 min
Cancellation rate
0%
How often is UA5478 on time?
Across 35 flights on STL → IAH from 2025-07-01 to 2025-08-18, UA5478 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was -10 min, and the worst 10% of flights arrived +86 min or later. 0% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 25 | 71% |
| 16-30 min | 2 | 6% |
| 31-60 min | 2 | 6% |
| 61-120 min | 3 | 9% |
| 2+ hrs | 3 | 9% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 23 | 65% | +70 min |
| 2025-08 | 12 | 83% | +22 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 57% |
| Tue | 7 | 86% |
| Wed | 7 | 71% |
| Thu | 7 | 86% |
| Fri | No data | — |
| Sat | No data | — |
| Sun | 7 | 57% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…