Flight OddsUA1587 IAD → DEN
United Airlines · Washington, DC to Denver, CO · 291 flights observed, 2025-07-01 to 2026-06-30 · 1,452 mi
UA1587 covers more than one route in the data window — the stats below are for IAD → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
92%
Median delay
-11 min
90th percentile
+11 min
Cancellation rate
0%
How often is UA1587 on time?
Across 291 flights on IAD → DEN from 2025-07-01 to 2026-06-30, UA1587 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -11 min, and the worst 10% of flights arrived +11 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 | 266 | 92% |
| 16-30 min | 5 | 2% |
| 31-60 min | 8 | 3% |
| 61-120 min | 5 | 2% |
| 2+ hrs | 4 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 87% | +1 min |
| 2025-08 | 29 | 93% | -7 min |
| 2025-09 | 30 | 97% | -15 min |
| 2025-10 | 31 | 90% | -6 min |
| 2025-11 | 30 | 100% | -13 min |
| 2025-12 | 15 | 93% | +28 min |
| 2026-01 | 5 | 100% | -9 min |
| 2026-03 | 27 | 81% | +8 min |
| 2026-04 | 30 | 100% | -10 min |
| 2026-05 | 31 | 94% | -8 min |
| 2026-06 | 30 | 87% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 42 | 90% |
| Tue | 41 | 85% |
| Wed | 39 | 95% |
| Thu | 41 | 93% |
| Fri | 42 | 95% |
| Sat | 42 | 93% |
| Sun | 41 | 95% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…