Flight OddsUnited Airlines · Denver, CO to West Yellowstone, MT · 107 flights observed, 2025-07-01 to 2025-10-15 · 469 mi
UA5139 covers more than one route in the data window — the stats below are for DEN → WYS, the one it has flown most recently. The others are linked under “Other routes”.
How often is UA5139 on time?
Across 107 flights on DEN → WYS from 2025-07-01 to 2025-10-15, UA5139 arrived within 15 minutes of schedule 77% of the time. The median arrival delay was -6 min, and the worst 10% of flights arrived +45 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 | 81 | 77% |
| 16-30 min | 8 | 8% |
| 31-60 min | 9 | 9% |
| 61-120 min | 7 | 7% |
| 2+ hrs | 0 | 0% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 30 | 83% | +3 min |
| 2025-08 | 30 | 60% | +16 min |
| 2025-09 | 30 | 93% | -6 min |
| 2025-10 | 15 | 67% | +8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 15 | 73% |
| Tue | 16 | 88% |
| Wed | 16 | 88% |
| Thu | 15 | 67% |
| Fri | 15 | 67% |
| Sat | 13 | 85% |
| Sun | 15 | 73% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…