Flight OddsUA639 DEN → MSO
United Airlines · Denver, CO to Missoula, MT · 169 flights observed, 2025-07-01 to 2026-02-11 · 679 mi
UA639 covers more than one route in the data window — the stats below are for DEN → MSO, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-6 min
90th percentile
+22 min
Cancellation rate
1%
How often is UA639 on time?
Across 169 flights on DEN → MSO from 2025-07-01 to 2026-02-11, UA639 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +22 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 | 144 | 86% |
| 16-30 min | 10 | 6% |
| 31-60 min | 5 | 3% |
| 61-120 min | 6 | 4% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 31 | 84% | +3 min |
| 2025-08 | 18 | 94% | -2 min |
| 2025-09 | 6 | 100% | -11 min |
| 2025-10 | 31 | 94% | -7 min |
| 2025-11 | 30 | 100% | -8 min |
| 2025-12 | 16 | 50% | +21 min |
| 2026-01 | 25 | 72% | +22 min |
| 2026-02 | 10 | 100% | -11 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 24 | 79% |
| Tue | 25 | 96% |
| Wed | 23 | 78% |
| Thu | 24 | 96% |
| Fri | 23 | 87% |
| Sat | 24 | 79% |
| Sun | 24 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…