Flight OddsUA4660 HLN → DEN
United Airlines · Helena, MT to Denver, CO · 176 flights observed, 2026-01-06 to 2026-06-30 · 594 mi
UA4660 covers more than one route in the data window — the stats below are for HLN → DEN, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
93%
Median delay
-16 min
90th percentile
+11 min
Cancellation rate
1%
How often is UA4660 on time?
Across 176 flights on HLN → DEN from 2026-01-06 to 2026-06-30, UA4660 arrived within 15 minutes of schedule 93% of the time. The median arrival delay was -16 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 | 163 | 93% |
| 16-30 min | 2 | 1% |
| 31-60 min | 5 | 3% |
| 61-120 min | 2 | 1% |
| 2+ hrs | 3 | 2% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 26 | 96% | -13 min |
| 2026-02 | 28 | 96% | -15 min |
| 2026-03 | 30 | 90% | -1 min |
| 2026-04 | 30 | 90% | -12 min |
| 2026-05 | 31 | 97% | -9 min |
| 2026-06 | 30 | 90% | +1 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 25 | 92% |
| Tue | 26 | 92% |
| Wed | 25 | 96% |
| Thu | 25 | 88% |
| Fri | 25 | 88% |
| Sat | 24 | 96% |
| Sun | 25 | 100% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…