Flight OddsSEA → DEN United Airlines
United Airlines · Seattle, WA to Denver, CO · 1,905 flights, 2025-07-01 to 2026-06-30 · aggregated across 29 flight numbers
On-time arrival
88%
Median delay
-12 min
90th percentile
+22 min
Cancellation rate
1%
How on-time is United Airlines from SEA to DEN?
Across every United Airlines flight number on SEA → DEN (1,905 flights, 2025-07-01 to 2026-06-30), 88% arrived within 15 minutes of schedule. Median arrival delay -12 min; the worst 10% ran +22 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 1,655 | 88% |
| 16-30 min | 77 | 4% |
| 31-60 min | 63 | 3% |
| 61-120 min | 42 | 2% |
| 2+ hrs | 39 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 191 | 76% | +11 min |
| 2025-08 | 187 | 79% | +5 min |
| 2025-09 | 170 | 91% | -4 min |
| 2025-10 | 171 | 96% | -11 min |
| 2025-11 | 136 | 95% | -9 min |
| 2025-12 | 135 | 88% | -2 min |
| 2026-01 | 128 | 95% | -7 min |
| 2026-02 | 123 | 89% | -1 min |
| 2026-03 | 137 | 85% | +3 min |
| 2026-04 | 138 | 96% | -14 min |
| 2026-05 | 164 | 90% | -6 min |
| 2026-06 | 196 | 87% | -3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 275 | 88% |
| Tue | 248 | 90% |
| Wed | 273 | 91% |
| Thu | 280 | 87% |
| Fri | 280 | 83% |
| Sat | 239 | 91% |
| Sun | 281 | 88% |
UA flight numbers on SEA → DEN
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…