Flight OddsUA638 DEN → BOI
United Airlines · Denver, CO to Boise, ID · 14 flights observed, 2025-08-19 to 2025-09-01 · 649 mi
UA638 covers more than one route in the data window — the stats below are for DEN → BOI, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
71%
Median delay
0 min
90th percentile
+26 min
Cancellation rate
0%
How often is UA638 on time?
Across 14 flights on DEN → BOI from 2025-08-19 to 2025-09-01, UA638 arrived within 15 minutes of schedule 71% of the time. The median arrival delay was 0 min, and the worst 10% of flights arrived +26 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 | 10 | 71% |
| 16-30 min | 3 | 21% |
| 31-60 min | 1 | 7% |
| 61-120 min | 0 | 0% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-08 | 13 | 69% | +3 min |
| 2025-09 | 1 | 100% | -3 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 2 | 100% |
| Tue | 2 | 50% |
| Wed | 2 | 50% |
| Thu | 2 | 50% |
| Fri | 2 | 100% |
| Sat | 2 | 50% |
| Sun | 2 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…