Flight profile · United Airlines
UA1217
Denver (DEN) to Durango (DRO) · scheduled 11:15 AM – 12:36 PM
How UA1217 performs
902 operations, 2024-01-09 to 2026-06-30.
UA1217 arrived on time 81.9% of the time, against 79.0% for all DEN → DRO flights — this specific departure is 2.9 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 6.8 points better.
Source: US DOT Bureau of Transportation Statistics · 902 operations between 2024-01-09 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1217 | 81.9% | 0.33% | -5 min | 5.9% | 902 |
| United Airlines on DEN → DRO | 75.2% | 0.55% | -4 min | 9.0% | 2,005 |
| All DEN → DRO flights | 79.0% | 0.95% | -6 min | 7.8% | 5,783 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-01-09 to 2026-06-30
By day of week
Does UA1217 run worse on particular days?
Tuesday is historically the most reliable day and Saturday the least, a gap of 4.2 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2024-01-09 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA1217 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| ORD→DEN Chicago to Denver | 2026-03-29 – 2026-06-30 | 94 | 91.5% |
| SNA→DEN Santa Ana to Denver | 2025-10-27 – 2025-12-17 | 44 | — |
| SFO→DEN San Francisco to Denver | 2025-06-26 – 2025-08-18 | 23 | — |
| MKE→DEN Milwaukee to Denver | 2025-07-01 – 2025-07-31 | 27 | — |
| ORF→DEN Norfolk to Denver | 2025-05-22 – 2025-05-31 | 10 | — |
| PHX→DEN Phoenix to Denver | 2024-09-26 – 2024-10-25 | 18 | — |
| LAX→LAS Los Angeles to Las Vegas | 2023-12-21 – 2024-01-08 | 19 | — |
| DEN→EWR Denver to Newark | 2023-12-02 – 2023-12-20 | 4 | — |
| ORD→DCA Chicago to Washington | 2023-10-29 – 2023-12-18 | 30 | — |
| PHX→IAD Phoenix to Washington | 2023-10-02 – 2023-10-28 | 26 | — |
| MSN→DEN Madison to Denver | 2023-10-01 – 2023-10-01 | 1 | — |
| IAH→SFO Houston to San Francisco | 2023-09-30 – 2023-09-30 | 1 | — |
| DTW→ORD Detroit to Chicago | 2023-09-05 – 2023-09-28 | 23 | — |
| IAH→DCA Houston to Washington | 2023-07-01 – 2023-09-04 | 66 | — |
| PHX→IAH Phoenix to Houston | 2023-07-01 – 2023-09-04 | 66 | — |
| DEN→PHX Denver to Phoenix | 2023-08-01 – 2023-09-02 | 31 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1217 currently operates. Blending them would produce an average of two different flights.
Why UA1217 runs late
Where US DOT attributed the delay minutes on this flight.
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding, fuelling — within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for UA1217 on DEN → DRO. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on DEN → DRO
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| OO4679 | SkyWest Airlines | 85.5% | 9 min early | 637 |
| OO5224 | SkyWest Airlines | 80.7% | 7 min early | 1,092 |
| OO5817 | SkyWest Airlines | 78.3% | 6 min early | 862 |
| UA529 | United Airlines | 69.6% | 3 min early | 815 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 902 records of UA1217 operating DEN → DRO, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.