Flight profile · United Airlines
UA1188
Redmond (RDM) to Denver (DEN) · scheduled 5:00 AM – 8:48 AM
How UA1188 performs
1,094 operations, 2023-07-01 to 2026-06-30.
UA1188 arrived on time 86.9% of the time, against 82.8% for all RDM → DEN flights — this specific departure is 4.1 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 4.2 points better.
Source: US DOT Bureau of Transportation Statistics · 1,094 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1188 | 86.9% | 1.28% | -9 min | 5.1% | 1,094 |
| United Airlines on RDM → DEN | 82.7% | 1.01% | -8 min | 6.7% | 2,177 |
| All RDM → DEN flights | 82.8% | 1.01% | -8 min | 6.6% | 2,188 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
By day of week
Does UA1188 run worse on particular days?
Thursday is historically the most reliable day and Friday the least, a gap of 7.2 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA1188 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.
Because the same number has served different journeys, the statistics above describe only the route UA1188 currently operates. Blending them would produce an average of two different flights.
Why UA1188 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 UA1188 on RDM → DEN. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Data and methodology
Calculated by FlyerIntel from 1,094 records of UA1188 operating RDM → DEN, 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.
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