Flight profile · Southwest Airlines
WN1628
Dallas (DAL) to Houston (HOU) · scheduled 6:00 AM – 7:10 AM
How WN1628 performs
856 operations, 2023-07-02 to 2026-06-30.
WN1628 arrived on time 94.1% of the time, against 76.8% for all DAL → HOU flights — this specific departure is 17.3 percentage points better than the route as a whole. Against Southwest Airlines’s own flights on this route it is 17.3 points better.
Source: US DOT Bureau of Transportation Statistics · 856 operations between 2023-07-02 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| WN1628 | 94.1% | 1.99% | -10 min | 1.8% | 856 |
| Southwest Airlines on DAL → HOU | 76.8% | 1.98% | -5 min | 6.7% | 12,339 |
| All DAL → HOU flights | 76.8% | 1.98% | -5 min | 6.7% | 12,339 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-02 to 2026-06-30
By day of week
Does WN1628 run worse on particular days?
Tuesday is historically the most reliable day and Monday the least, a gap of 5.1 percentage points.
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-02 to 2026-06-30 · Days with fewer than 120 operations are not scored.
Other routes WN1628 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 |
|---|---|---|---|
| HOU→CRP Houston to Corpus Christi | 2023-07-11 – 2025-01-04 | 54 | — |
| HOU→MDW Houston to Chicago | 2023-09-05 – 2024-12-01 | 11 | — |
| DEN→AUS Denver to Austin | 2024-07-05 – 2024-07-05 | 1 | — |
| SMF→DEN Sacramento to Denver | 2024-07-05 – 2024-07-05 | 1 | — |
| HOU→PHX Houston to Phoenix | 2024-01-14 – 2024-03-03 | 8 | — |
| LAS→AUS Las Vegas to Austin | 2024-01-14 – 2024-03-03 | 8 | — |
| PHX→LAS Phoenix to Las Vegas | 2024-01-14 – 2024-03-03 | 8 | — |
| HOU→MCO Houston to Orlando | 2023-09-07 – 2024-01-07 | 69 | — |
| BWI→STL Baltimore to St. Louis | 2023-11-05 – 2024-01-07 | 43 | — |
| MCO→BWI Orlando to Baltimore | 2023-11-05 – 2024-01-07 | 43 | — |
| BWI→BUF Baltimore to Buffalo | 2023-11-25 – 2023-12-30 | 3 | — |
| HOU→BWI Houston to Baltimore | 2023-11-25 – 2023-12-30 | 3 | — |
| MDW→PHL Chicago to Philadelphia | 2023-09-05 – 2023-10-04 | 10 | — |
| ATL→PIT Atlanta to Pittsburgh | 2023-08-15 – 2023-09-04 | 17 | — |
| HOU→ATL Houston to Atlanta | 2023-08-15 – 2023-09-04 | 17 | — |
| HOU→STL Houston to St. Louis | 2023-07-16 – 2023-08-13 | 5 | — |
| STL→MCO St. Louis to Orlando | 2023-07-16 – 2023-08-13 | 5 | — |
| HOU→LAS Houston to Las Vegas | 2023-07-03 – 2023-07-10 | 6 | — |
Because the same number has served different journeys, the statistics above describe only the route WN1628 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 856 records of WN1628 operating DAL → HOU, 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.