Flight OddsUA4021 CLE → IAH
United Airlines · Cleveland, OH to Houston, TX · 45 flights observed, 2025-10-26 to 2025-12-18 · 1,091 mi
UA4021 covers more than one route in the data window — the stats below are for CLE → IAH, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-14 min
90th percentile
+16 min
Cancellation rate
2%
How often is UA4021 on time?
Across 45 flights on CLE → IAH from 2025-10-26 to 2025-12-18, UA4021 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -14 min, and the worst 10% of flights arrived +16 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 | 38 | 86% |
| 16-30 min | 4 | 9% |
| 31-60 min | 2 | 5% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-10 | 6 | 83% | -16 min |
| 2025-11 | 23 | 83% | -11 min |
| 2025-12 | 15 | 93% | -10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 7 | 86% |
| Tue | 8 | 100% |
| Wed | 8 | 88% |
| Thu | 7 | 86% |
| Fri | 7 | 71% |
| Sat | No data | — |
| Sun | 7 | 86% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…