Flight profile · Southwest Airlines
WN4
Houston (HOU) to Dallas (DAL) · scheduled 7:00 AM – 8:10 AM
How WN4 performs
636 operations, 2023-07-02 to 2026-06-30.
WN4 arrived on time 95.4% of the time, against 81.5% for all HOU → DAL flights — this specific departure is 13.8 percentage points better than the route as a whole. Against Southwest Airlines’s own flights on this route it is 13.8 points better.
Source: US DOT Bureau of Transportation Statistics · 636 operations between 2023-07-02 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| WN4 | 95.4% | 1.42% | -12 min | 1.4% | 636 |
| Southwest Airlines on HOU → DAL | 81.5% | 2.08% | -8 min | 6.0% | 12,341 |
| All HOU → DAL flights | 81.5% | 2.08% | -8 min | 6.0% | 12,341 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-02 to 2026-06-30
Other routes WN4 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 |
|---|---|---|---|
| DAL→BHM Dallas to Birmingham | 2025-11-02 – 2026-06-01 | 41 | — |
| DAL→MAF Dallas to Midland | 2024-08-06 – 2026-03-02 | 45 | — |
| MCI→DEN Kansas City to Denver | 2025-10-31 – 2025-10-31 | 1 | — |
| DAL→MCI Dallas to Kansas City | 2025-10-31 – 2025-10-31 | 1 | — |
| DAL→LIT Dallas to Little Rock | 2024-06-04 – 2025-10-29 | 26 | — |
| LAS→ONT Las Vegas to Ontario | 2024-06-04 – 2025-10-29 | 26 | — |
| LIT→LAS Little Rock to Las Vegas | 2025-10-07 – 2025-10-29 | 8 | — |
| DAL→LAS Dallas to Las Vegas | 2023-09-10 – 2025-08-31 | 5 | — |
| DAL→COS Dallas to Colorado Springs | 2025-06-05 – 2025-08-04 | 26 | — |
| DAL→ELP Dallas to El Paso | 2023-11-11 – 2025-01-04 | 11 | — |
| LAX→SJC Los Angeles to San Jose | 2024-11-23 – 2025-01-04 | 5 | — |
| ELP→LAX El Paso to Los Angeles | 2024-11-23 – 2025-01-04 | 5 | — |
| DAL→MCO Dallas to Orlando | 2023-07-11 – 2024-12-01 | 51 | — |
| BWI→LAS Baltimore to Las Vegas | 2024-12-01 – 2024-12-01 | 1 | — |
| ALB→BWI Albany to Baltimore | 2024-12-01 – 2024-12-01 | 1 | — |
| MCO→ALB Orlando to Albany | 2024-12-01 – 2024-12-01 | 1 | — |
| PHX→HOU Phoenix to Houston | 2024-12-01 – 2024-12-01 | 1 | — |
| DAL→ATL Dallas to Atlanta | 2024-08-10 – 2024-09-28 | 8 | — |
| LIT→DEN Little Rock to Denver | 2024-06-04 – 2024-07-31 | 18 | — |
| DEN→LAS Denver to Las Vegas | 2024-06-04 – 2024-07-31 | 18 | — |
| DAL→TUL Dallas to Tulsa | 2024-07-05 – 2024-07-05 | 1 | — |
| MDW→RSW Chicago to Fort Myers | 2024-07-05 – 2024-07-05 | 1 | — |
| TUL→MDW Tulsa to Chicago | 2024-07-05 – 2024-07-05 | 1 | — |
| DAL→BNA Dallas to Nashville | 2023-07-02 – 2024-04-08 | 16 | — |
| DAL→AMA Dallas to Amarillo | 2023-11-05 – 2024-01-07 | 43 | — |
| CRP→HOU Corpus Christi to Houston | 2023-11-11 – 2024-01-06 | 6 | — |
| ELP→PHX El Paso to Phoenix | 2023-11-11 – 2024-01-06 | 6 | — |
| PHX→STL Phoenix to St. Louis | 2023-11-11 – 2024-01-06 | 6 | — |
| STL→MCI St. Louis to Kansas City | 2023-11-11 – 2024-01-06 | 6 | — |
| DAL→IND Dallas to Indianapolis | 2023-09-05 – 2023-10-04 | 10 | — |
| IND→RSW Indianapolis to Fort Myers | 2023-09-05 – 2023-10-04 | 10 | — |
| DAL→LBB Dallas to Lubbock | 2023-09-07 – 2023-10-02 | 12 | — |
| LAS→SMF Las Vegas to Sacramento | 2023-09-10 – 2023-10-01 | 4 | — |
| DAL→LGA Dallas to New York | 2023-09-09 – 2023-09-30 | 4 | — |
| BWI→SJU Baltimore to San Juan | 2023-07-16 – 2023-08-13 | 5 | — |
| DAL→BWI Dallas to Baltimore | 2023-07-16 – 2023-08-13 | 5 | — |
| ABQ→DEN Albuquerque to Denver | 2023-07-03 – 2023-07-10 | 6 | — |
| DAL→ABQ Dallas to Albuquerque | 2023-07-03 – 2023-07-10 | 6 | — |
| BNA→CMH Nashville to Columbus | 2023-07-02 – 2023-07-09 | 2 | — |
| MCO→HOU Orlando to Houston | 2023-07-02 – 2023-07-09 | 2 | — |
Because the same number has served different journeys, the statistics above describe only the route WN4 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 636 records of WN4 operating HOU → DAL, 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.