Flight OddsUA4637 BOI → DEN
United Airlines · Boise, ID to Denver, CO · 68 flights observed, 2025-08-19 to 2025-10-25 · 649 mi
UA4637 covers more than one route in the data window — the stats below are for BOI → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
63%
Median delay
+7 min
90th percentile
+72 min
Cancellation rate
0%
How often is UA4637 on time?
Across 68 flights on BOI → DEN from 2025-08-19 to 2025-10-25, UA4637 arrived within 15 minutes of schedule 63% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +72 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 | 43 | 63% |
| 16-30 min | 9 | 13% |
| 31-60 min | 7 | 10% |
| 61-120 min | 6 | 9% |
| 2+ hrs | 3 | 4% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 46% | +30 min |
| 2025-09 | 30 | 63% | +34 min |
| 2025-10 | 25 | 72% | +10 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 9 | 67% |
| Tue | 10 | 60% |
| Wed | 10 | 80% |
| Thu | 10 | 80% |
| Fri | 10 | 30% |
| Sat | 10 | 60% |
| Sun | 9 | 67% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…