WN4480
WN4480 (Southwest Airlines) is a multi-stop service on 15 routes, busiest Charleston to Nashville. Of 469 departures recorded from October 2024 to July 2026, 68.5% left on time, according to the US BTS.
- On-time departures68.5%of 469 flights
- Average delay18.7 min
- July 202631▲ 93.8%vs July 2025
- Cancelled1.1%
- Legs flown under this number15
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 26 | 5 | ▼ 80.8% |
| February | 24 | – | – |
| March | 22 | 27 | ▲ 22.7% |
| April | 20 | 22 | ▲ 10.0% |
| May | 23 | 23 | 0.0% |
| June | 18 | 28 | ▲ 55.6% |
| July | 16 | 31 | ▲ 93.8% |
| August | 29 | – | – |
| September | 30 | – | – |
| October | 1 | – | in progress |
| November | 28 | – | – |
| December | 31 | – | – |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 82.6% | 100.0% | ▲ 21.1% |
| February | 75.0% | – | – |
| March | 40.9% | 55.6% | ▲ 35.8% |
| April | 55.0% | 90.9% | ▲ 65.3% |
| May | 43.5% | 95.7% | ▲ 120.0% |
| June | 61.1% | 17.9% | ▼ 70.8% |
| July | 50.0% | 16.7% | ▼ 66.7% |
| August | 69.0% | – | – |
| September | 76.7% | – | – |
| October | 100.0% | – | in progress |
| November | 100.0% | – | – |
| December | 100.0% | – | – |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 3 | 0 | ▼ 100.0% |
| February | 0 | – | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | 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% 464
- Cancelled 1.1% 5
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| CHS BNA Charleston International Airport – Nashville International Airport | 706 | 14.3 min | 83.1% | 74 |
| TUL STL Tulsa International Airport – St. Louis Lambert International Airport | 563 | -4.8 min | 100.0% | 64 |
| DEN LGA Denver International Airport – LaGuardia Airport | 2,600 | 46.6 min | 15.8% | 58 |
| MSY HOU Louis Armstrong New Orleans International Airport – William P. Hobby Airport | 485 | 10.0 min | 75.4% | 57 |
| DEN SFO Denver International Airport – San Francisco International Airport | 1,553 | 40.9 min | 45.0% | 40 |
| BWI JAX Baltimore/Washington International Thurgood Marshall Airport – Jacksonville International Airport | 1,068 | -0.3 min | 95.0% | 40 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 25 | 25 | 92.0% | 0 |
| December 2024 | 20 | 20 | 85.0% | 0 |
| January 2025 | 26 | 23 | 82.6% | 3 |
| February 2025 | 24 | 24 | 75.0% | 0 |
| March 2025 | 22 | 22 | 40.9% | 0 |
| April 2025 | 20 | 20 | 55.0% | 0 |
| May 2025 | 23 | 23 | 43.5% | 0 |
| June 2025 | 18 | 18 | 61.1% | 0 |
| July 2025 | 16 | 16 | 50.0% | 0 |
| August 2025 | 29 | 29 | 69.0% | 0 |
| September 2025 | 30 | 30 | 76.7% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 28 | 27 | 100.0% | 1 |
| December 2025 | 31 | 31 | 100.0% | 0 |
| January 2026 | 5 | 5 | 100.0% | 0 |
| March 2026 | 27 | 27 | 55.6% | 0 |
| April 2026 | 22 | 22 | 90.9% | 0 |
| May 2026 | 23 | 23 | 95.7% | 0 |
| June 2026 | 28 | 28 | 17.9% | 0 |
| July 2026 | 31 | 30 | 16.7% | 1 |