UA459
United Airlines flight 459 — Portland (PDX) to Denver (DEN)
On time
90%
Avg delay
~84 min
Cancelled
0.8%
UA459 is a reliable flight. About 90% of departures arrive on time. When delays happen, the most common cause is airline operations.
Monthly breakdown
| Month | On time | Cancelled | Avg delay |
|---|---|---|---|
| 2026-07 | 94% | 0.0% | 21 min |
| 2026-06 | 100% | 0.0% | 0 min |
| 2026-05 | 97% | 0.0% | 408 min |
| 2026-04 | 97% | 0.0% | 43 min |
| 2026-03 | 100% | 0.0% | 0 min |
| 2026-02 | 93% | 0.0% | 166 min |
| 2026-01 | 100% | 0.0% | 0 min |
| 2025-12 | 97% | 0.0% | 139 min |
| 2025-11 | 97% | 0.0% | 51 min |
| 2025-10 | 97% | 0.0% | 24 min |
| 2025-09 | 97% | 0.0% | 182 min |
| 2025-08 | 96% | 3.7% | 39 min |
Top delay cause
airline operations
Based on 1,800 tracked departures
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Get a free briefingData last updated October 2026. Source: Bureau of Transportation Statistics.