Flight OddsUA1505 SEA → DEN
United Airlines · Seattle, WA to Denver, CO · 314 flights observed, 2025-08-19 to 2026-06-30 · 1,024 mi
UA1505 covers more than one route in the data window — the stats below are for SEA → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
92%
Median delay
-12 min
90th percentile
+11 min
Cancellation rate
1%
How often is UA1505 on time?
Across 314 flights on SEA → DEN from 2025-08-19 to 2026-06-30, UA1505 arrived within 15 minutes of schedule 92% of the time. The median arrival delay was -12 min, and the worst 10% of flights arrived +11 min or later. 1% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 285 | 92% |
| 16-30 min | 6 | 2% |
| 31-60 min | 6 | 2% |
| 61-120 min | 4 | 1% |
| 2+ hrs | 10 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 85% | +2 min |
| 2025-09 | 30 | 97% | -4 min |
| 2025-10 | 31 | 97% | -5 min |
| 2025-11 | 28 | 93% | -5 min |
| 2025-12 | 31 | 90% | +19 min |
| 2026-01 | 30 | 93% | -11 min |
| 2026-02 | 28 | 86% | +15 min |
| 2026-03 | 30 | 80% | +4 min |
| 2026-04 | 30 | 97% | -13 min |
| 2026-05 | 30 | 97% | -8 min |
| 2026-06 | 30 | 90% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 45 | 91% |
| Tue | 46 | 89% |
| Wed | 45 | 93% |
| Thu | 43 | 98% |
| Fri | 44 | 91% |
| Sat | 45 | 91% |
| Sun | 43 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…