Flight profile · United Airlines
UA1497
Houston (IAH) to San Juan (SJU) · scheduled 11:57 PM – 5:30 AM
How UA1497 performs
304 operations, 2023-12-22 to 2026-06-30.
UA1497 arrived on time 85.0% of the time, against 80.0% for all IAH → SJU flights — this specific departure is 5.0 percentage points better than the route as a whole. Against United Airlines’s own flights on this route it is 4.4 points better.
Source: US DOT Bureau of Transportation Statistics · 304 operations between 2023-12-22 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA1497 | 85.0% | 1.32% | -9 min | 6.7% | 304 |
| United Airlines on IAH → SJU | 80.6% | 0.78% | -8 min | 6.1% | 2,449 |
| All IAH → SJU flights | 80.0% | 1.01% | -8 min | 6.8% | 2,780 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-12-22 to 2026-06-30
Other routes UA1497 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 |
|---|---|---|---|
| PHL→SFO Philadelphia to San Francisco | 2026-04-30 – 2026-05-20 | 21 | — |
| LAS→EWR Las Vegas to Newark | 2026-03-29 – 2026-04-29 | 32 | — |
| PIT→IAD Pittsburgh to Washington | 2025-10-27 – 2025-12-17 | 47 | — |
| PIT→EWR Pittsburgh to Newark | 2025-11-16 – 2025-11-16 | 1 | — |
| IAD→CLE Washington to Cleveland | 2025-08-19 – 2025-10-25 | 58 | — |
| RDU→EWR Raleigh–Durham to Newark | 2025-09-05 – 2025-09-19 | 3 | — |
| IAH→JAC Houston to Jackson | 2025-08-22 – 2025-08-30 | 4 | — |
| EWR→SLC Newark to Salt Lake City | 2025-05-01 – 2025-05-21 | 21 | — |
| MIA→EWR Miami to Newark | 2025-05-01 – 2025-05-21 | 21 | — |
| SAN→IAH San Diego to Houston | 2025-03-30 – 2025-04-30 | 23 | — |
| LAS→DEN Las Vegas to Denver | 2024-12-03 – 2024-12-18 | 16 | — |
| ORD→FSD Chicago to Sioux Falls | 2024-08-19 – 2024-12-02 | 105 | 82.7% |
| LGA→ORD New York to Chicago | 2024-10-27 – 2024-12-02 | 36 | — |
| LAX→IAH Los Angeles to Houston | 2024-03-31 – 2024-06-26 | 88 | — |
| ORD→LGA Chicago to New York | 2023-11-28 – 2023-12-20 | 23 | — |
| BNA→ORD Nashville to Chicago | 2023-11-30 – 2023-12-18 | 12 | — |
| DEN→BNA Denver to Nashville | 2023-11-30 – 2023-12-11 | 8 | — |
| MSP→ORD Minneapolis to Chicago | 2023-10-29 – 2023-11-27 | 30 | — |
| ORD→EWR Chicago to Newark | 2023-09-05 – 2023-10-27 | 49 | — |
| IND→ORD Indianapolis to Chicago | 2023-10-01 – 2023-10-15 | 3 | — |
| STL→ORD St. Louis to Chicago | 2023-07-01 – 2023-09-04 | 64 | — |
| ORD→MYR Chicago to Myrtle Beach | 2023-08-01 – 2023-09-04 | 35 | — |
| ORD→BOS Chicago to Boston | 2023-07-03 – 2023-07-31 | 17 | — |
Because the same number has served different journeys, the statistics above describe only the route UA1497 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
29 min late
against a median of 9 min early
Percentiles over 304 operations. Cancelled and diverted flights have no arrival time and are counted separately rather than as very late arrivals.
Why UA1497 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
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 UA1497 on IAH → SJU. 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 IAH → SJU
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| UA701 | United Airlines | 85.1% | 13 min early | 816 |
| UA1192 | United Airlines | 78.6% | 5 min early | 1,096 |
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 304 records of UA1497 operating IAH → 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.
Full methodology · Report a problem
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