Flight OddsUA4255 IAH → BHM
United Airlines · Houston, TX to Birmingham, AL · 113 flights observed, 2025-07-01 to 2025-10-25 · 562 mi
UA4255 covers more than one route in the data window — the stats below are for IAH → BHM, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
80%
Median delay
-7 min
90th percentile
+38 min
Cancellation rate
0%
How often is UA4255 on time?
Across 113 flights on IAH → BHM from 2025-07-01 to 2025-10-25, UA4255 arrived within 15 minutes of schedule 80% of the time. The median arrival delay was -7 min, and the worst 10% of flights arrived +38 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 | 90 | 80% |
| 16-30 min | 9 | 8% |
| 31-60 min | 5 | 4% |
| 61-120 min | 5 | 4% |
| 2+ hrs | 3 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 65% | +18 min |
| 2025-08 | 30 | 77% | +10 min |
| 2025-09 | 29 | 93% | -6 min |
| 2025-10 | 22 | 91% | -9 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 12 | 75% |
| Tue | 17 | 82% |
| Wed | 16 | 94% |
| Thu | 17 | 94% |
| Fri | 17 | 71% |
| Sat | 17 | 71% |
| Sun | 16 | 75% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…