Flight profile · United Airlines
UA2456
Houston (IAH) to Seattle (SEA) · scheduled 7:50 PM – 11:00 PM
How UA2456 performs
558 operations, 2024-10-27 to 2026-06-29.
UA2456 arrived on time 70.6% of the time, against 77.2% for all IAH → SEA flights — this specific departure is 6.6 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 5.9 points worse.
Source: US DOT Bureau of Transportation Statistics · 558 operations between 2024-10-27 to 2026-06-29
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA2456 | 70.6% | 1.08% | 0 min | 8.9% | 558 |
| United Airlines on IAH → SEA | 76.5% | 0.98% | -3 min | 8.6% | 3,669 |
| All IAH → SEA flights | 77.2% | 1.19% | -4 min | 7.2% | 6,298 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-10-27 to 2026-06-29
Other routes UA2456 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 |
|---|---|---|---|
| MCO→IAH Orlando to Houston | 2025-10-26 – 2026-06-22 | 175 | 87.9% |
| BNA→IAH Nashville to Houston | 2025-12-18 – 2026-01-05 | 15 | — |
| SFO→TPA San Francisco to Tampa | 2025-10-25 – 2025-10-25 | 1 | — |
| SJC→IAH San Jose to Houston | 2024-02-15 – 2025-09-30 | 23 | — |
| DCA→IAH Washington to Houston | 2025-08-19 – 2025-09-24 | 34 | — |
| IND→IAH Indianapolis to Houston | 2025-06-26 – 2025-07-31 | 35 | — |
| LGA→IAH New York to Houston | 2025-03-06 – 2025-04-30 | 48 | — |
| PIT→IAH Pittsburgh to Houston | 2023-09-05 – 2025-01-06 | 84 | — |
| IAH→SMF Houston to Sacramento | 2023-07-01 – 2024-10-26 | 436 | 65.9% |
| SMF→EWR Sacramento to Newark | 2024-06-27 – 2024-10-26 | 80 | — |
| SMF→ORD Sacramento to Chicago | 2024-08-19 – 2024-08-23 | 5 | — |
| IAH→LGA Houston to New York | 2024-03-07 – 2024-03-30 | 24 | — |
| ORD→IAH Chicago to Houston | 2023-11-28 – 2023-12-20 | 23 | — |
| IAH→SAT Houston to San Antonio | 2023-12-02 – 2023-12-20 | 7 | — |
Because the same number has served different journeys, the statistics above describe only the route UA2456 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 558 records of UA2456 operating IAH → SEA, 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.