WN4628
WN4628 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Austin to Nashville. Of 289 departures recorded from October 2024 to July 2026, 73.5% left on time, according to the US BTS.
- On-time departures73.5%of 289 flights
- Average delay12.6 min
- July 202618
- Cancelled0.7%
- Legs flown under this number17
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 10 | 2 | ▼ 80.0% |
| February | 17 | 1 | ▼ 94.1% |
| March | 11 | 4 | ▼ 63.6% |
| April | 5 | 41 | ▲ 720.0% |
| May | 3 | 53 | ▲ 1,666.7% |
| June | 1 | 20 | ▲ 1,900.0% |
| July | – | 18 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 16 | – | – |
| December | 6 | – | – |
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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 80.0% | 0.0% | ▼ 100.0% |
| February | 81.3% | 100.0% | ▲ 23.1% |
| March | 72.7% | 25.0% | ▼ 65.6% |
| April | 80.0% | 73.2% | ▼ 8.5% |
| May | 100.0% | 79.3% | ▼ 20.8% |
| June | 100.0% | 65.0% | ▼ 35.0% |
| July | – | 94.4% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 56.3% | – | – |
| 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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| 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 99.3% 287
- Cancelled 0.7% 2
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| AUS BNA Austin Bergstrom International Airport – Nashville International Airport | 1,215 | 11.2 min | 76.9% | 67 |
| MCO BWI Orlando International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,269 | 6.9 min | 84.1% | 63 |
| BWI PVD Baltimore/Washington International Thurgood Marshall Airport – Rhode Island T. F. Green International Airport | 526 | 6.8 min | 76.5% | 34 |
| BWI ABQ Baltimore/Washington International Thurgood Marshall Airport – Albuquerque International Sunport | 2,682 | 16.4 min | 61.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 37 | 37 | 64.9% | 0 |
| December 2024 | 24 | 23 | 69.6% | 1 |
| January 2025 | 10 | 10 | 80.0% | 0 |
| February 2025 | 17 | 16 | 81.3% | 1 |
| March 2025 | 11 | 11 | 72.7% | 0 |
| April 2025 | 5 | 5 | 80.0% | 0 |
| May 2025 | 3 | 3 | 100.0% | 0 |
| June 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 16 | 16 | 56.3% | 0 |
| December 2025 | 6 | 6 | 50.0% | 0 |
| January 2026 | 2 | 2 | 0.0% | 0 |
| February 2026 | 1 | 1 | 100.0% | 0 |
| March 2026 | 4 | 4 | 25.0% | 0 |
| April 2026 | 41 | 41 | 73.2% | 0 |
| May 2026 | 53 | 53 | 79.3% | 0 |
| June 2026 | 20 | 20 | 65.0% | 0 |
| July 2026 | 18 | 18 | 94.4% | 0 |