Flight profile · United Airlines
UA1339
Denver (DEN) to San Juan (SJU) · scheduled 9:50 AM – 6:25 PM
How UA1339 performs
885 operations, 2023-10-29 to 2026-06-30.
Source: US DOT Bureau of Transportation Statistics · 885 operations between 2023-10-29 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1339 | 76.6% | 0.34% | -2 min | 3.9% | 885 |
| United Airlines on DEN → SJU | 76.6% | 0.34% | -2 min | 3.9% | 885 |
| All DEN → SJU flights | 76.6% | 0.34% | -2 min | 3.9% | 885 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-10-29 to 2026-06-30
By day of week
Does UA1339 run worse on particular days?
Tuesday is historically the most reliable day and Saturday the least, a gap of 16.0 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-10-29 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes UA1339 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 UA1339 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 885 records of UA1339 operating DEN → SJU, 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.