Flight profile · United Airlines
UA2237
San Diego (SAN) to Houston (IAH) · scheduled 11:58 AM – 5:25 PM
How UA2237 performs
363 operations, 2024-12-19 to 2026-06-30.
UA2237 arrived on time 78.0% of the time, against 84.7% for all SAN → IAH flights — this specific departure is 6.7 percentage points worse than the route as a whole. Against United Airlines’s own flights on this route it is 6.9 points worse.
Source: US DOT Bureau of Transportation Statistics · 363 operations between 2024-12-19 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| UA2237 | 78.0% | 0.55% | -3 min | 5.6% | 363 |
| United Airlines on SAN → IAH | 84.9% | 1.33% | -9 min | 5.2% | 5,174 |
| All SAN → IAH flights | 84.7% | 1.40% | -8 min | 5.3% | 5,291 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-12-19 to 2026-06-30
Other routes UA2237 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 |
|---|---|---|---|
| IAH→GRR Houston to Grand Rapids | 2026-04-30 – 2026-05-02 | 2 | — |
| IAH→PBI Houston to West Palm Beach | 2026-04-01 – 2026-04-29 | 21 | — |
| IAH→MIA Houston to Miami | 2023-09-05 – 2026-03-28 | 42 | — |
| IAH→IAD Houston to Washington | 2024-06-27 – 2026-01-05 | 288 | 65.7% |
| SFO→SAN San Francisco to San Diego | 2025-09-25 – 2025-10-25 | 31 | — |
| ORD→SAN Chicago to San Diego | 2025-06-26 – 2025-06-30 | 4 | — |
| MSY→IAH New Orleans to Houston | 2025-05-01 – 2025-05-21 | 21 | — |
| IAH→BOS Houston to Boston | 2024-09-26 – 2025-03-29 | 141 | 82.0% |
| LAX→IAH Los Angeles to Houston | 2023-09-29 – 2024-12-02 | 344 | 86.7% |
| SFO→LAX San Francisco to Los Angeles | 2023-11-28 – 2024-12-02 | 199 | 88.8% |
| IAH→FLL Houston to Fort Lauderdale | 2024-10-27 – 2024-12-02 | 36 | — |
| IAH→MSY Houston to New Orleans | 2024-05-23 – 2024-06-26 | 35 | — |
| IAH→RIC Houston to Richmond | 2024-03-31 – 2024-05-01 | 32 | — |
| IAH→ORD Houston to Chicago | 2024-03-07 – 2024-03-30 | 24 | — |
| DSM→DEN Des Moines to Denver | 2023-07-01 – 2023-09-04 | 66 | — |
Because the same number has served different journeys, the statistics above describe only the route UA2237 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 363 records of UA2237 operating SAN → IAH, 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.