Flight OddsUA4028 STL → IAH
United Airlines · St. Louis, MO to Houston, TX · 89 flights observed, 2025-12-18 to 2026-06-30 · 667 mi
UA4028 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
84%
Median delay
-17 min
90th percentile
+23 min
Cancellation rate
2%
How often is UA4028 on time?
Across 89 flights on STL → IAH from 2025-12-18 to 2026-06-30, UA4028 arrived within 15 minutes of schedule 84% of the time. The median arrival delay was -17 min, and the worst 10% of flights arrived +23 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 73 | 84% |
| 16-30 min | 9 | 10% |
| 31-60 min | 1 | 1% |
| 61-120 min | 3 | 3% |
| 2+ hrs | 1 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 14 | 93% | -24 min |
| 2026-01 | 25 | 92% | -18 min |
| 2026-02 | 9 | 100% | -29 min |
| 2026-05 | 10 | 70% | +9 min |
| 2026-06 | 29 | 72% | +6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 14 | 71% |
| Tue | 14 | 93% |
| Wed | 12 | 83% |
| Thu | 12 | 83% |
| Fri | 14 | 93% |
| Sat | 9 | 67% |
| Sun | 12 | 92% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…