WN4596
WN4596 (Southwest Airlines) is a multi-stop service on 13 routes, busiest San Antonio to Baltimore. Of 282 departures recorded from October 2024 to July 2026, 81.7% left on time, according to the US BTS.
- On-time departures81.7%of 282 flights
- Average delay8.6 min
- July 202617▲ 6.3%vs July 2025
- Cancelled1.1%
- Legs flown under this number13
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 25 | 31 | ▲ 24.0% |
| February | 16 | 29 | ▲ 81.3% |
| March | 3 | 12 | ▲ 300.0% |
| April | 18 | 2 | ▼ 88.9% |
| May | 27 | – | – |
| June | 18 | 16 | ▼ 11.1% |
| July | 16 | 17 | ▲ 6.3% |
| August | 3 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 2 | – | – |
| December | 2 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 78.3% | 71.0% | ▼ 9.3% |
| February | 100.0% | 62.1% | ▼ 37.9% |
| March | 100.0% | 75.0% | ▼ 25.0% |
| April | 88.9% | 100.0% | ▲ 12.5% |
| May | 92.6% | – | – |
| June | 77.8% | 93.8% | ▲ 20.5% |
| July | 75.0% | 94.1% | ▲ 25.5% |
| August | 66.7% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 100.0% | – | – |
| December | 50.0% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.9% 279
- Cancelled 1.1% 3
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAT BWI San Antonio International Airport – Baltimore/Washington International Thurgood Marshall Airport | 2,262 | 1.8 min | 88.9% | 65 |
| MCO HOU Orlando International Airport – William P. Hobby Airport | 1,364 | 18.4 min | 69.0% | 58 |
| DAL MSY Dallas Love Field – Louis Armstrong New Orleans International Airport | 700 | 5.1 min | 87.2% | 39 |
| SNA SJC John Wayne Orange County International Airport – Mineta San Jose International Airport | 550 | 9.9 min | 77.1% | 35 |
| MEM MCO Frederick W. Smith International Airport – Orlando International Airport | 1,100 | 1.8 min | 93.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 81.3% | 0 |
| November 2024 | 11 | 11 | 90.9% | 0 |
| December 2024 | 18 | 18 | 83.3% | 0 |
| January 2025 | 25 | 23 | 78.3% | 2 |
| February 2025 | 16 | 16 | 100.0% | 0 |
| March 2025 | 3 | 3 | 100.0% | 0 |
| April 2025 | 18 | 18 | 88.9% | 0 |
| May 2025 | 27 | 27 | 92.6% | 0 |
| June 2025 | 18 | 18 | 77.8% | 0 |
| July 2025 | 16 | 16 | 75.0% | 0 |
| August 2025 | 3 | 3 | 66.7% | 0 |
| November 2025 | 2 | 1 | 100.0% | 1 |
| December 2025 | 2 | 2 | 50.0% | 0 |
| January 2026 | 31 | 31 | 71.0% | 0 |
| February 2026 | 29 | 29 | 62.1% | 0 |
| March 2026 | 12 | 12 | 75.0% | 0 |
| April 2026 | 2 | 2 | 100.0% | 0 |
| June 2026 | 16 | 16 | 93.8% | 0 |
| July 2026 | 17 | 17 | 94.1% | 0 |