Flight OddsUA4239 IAH → BHM
United Airlines · Houston, TX to Birmingham, AL · 50 flights observed, 2025-10-26 to 2026-06-24 · 562 mi
UA4239 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
70%
Median delay
+6 min
90th percentile
+80 min
Cancellation rate
6%
How often is UA4239 on time?
Across 50 flights on IAH → BHM from 2025-10-26 to 2026-06-24, UA4239 arrived within 15 minutes of schedule 70% of the time. The median arrival delay was +6 min, and the worst 10% of flights arrived +80 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 | 32 | 70% |
| 16-30 min | 2 | 4% |
| 31-60 min | 4 | 9% |
| 61-120 min | 6 | 13% |
| 2+ hrs | 2 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 5 | 80% | +2 min |
| 2025-11 | 19 | 89% | +1 min |
| 2025-12 | 1 | 0% | +105 min |
| 2026-06 | 21 | 52% | +35 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 9 | 56% |
| Tue | 4 | 75% |
| Wed | 8 | 75% |
| Thu | 7 | 86% |
| Fri | 8 | 50% |
| Sat | 3 | 100% |
| Sun | 7 | 71% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…