WN4580
WN4580 (Southwest Airlines) is a multi-stop service on 25 routes, busiest Washington to Orlando. Of 308 departures recorded from October 2024 to July 2026, 77.8% left on time, according to the US BTS.
- On-time departures77.8%of 308 flights
- Average delay11.7 min
- July 202629▲ 190.0%vs July 2025
- Cancelled2.0%
- Legs flown under this number25
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 | 23 | 1 | ▼ 95.7% |
| February | 17 | 20 | ▲ 17.6% |
| March | 11 | 33 | ▲ 200.0% |
| April | 2 | 10 | ▲ 400.0% |
| May | – | 5 | – |
| June | 6 | 27 | ▲ 350.0% |
| July | 10 | 29 | ▲ 190.0% |
| August | – | – | – |
| September | – | – | – |
| October | 37 | – | in progress |
| November | 5 | – | – |
| December | 3 | – | – |
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 | 90.0% | 100.0% | ▲ 11.1% |
| February | 100.0% | 100.0% | 0.0% |
| March | 54.6% | 72.7% | ▲ 33.3% |
| April | 50.0% | 70.0% | ▲ 40.0% |
| May | – | 40.0% | – |
| June | 100.0% | 85.2% | ▼ 14.8% |
| July | 88.9% | 96.4% | ▲ 8.5% |
| August | – | – | – |
| September | – | – | – |
| October | 75.7% | – | in progress |
| November | 80.0% | – | – |
| December | 66.7% | – | – |
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 | 3 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | 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 98.1% 302
- Cancelled 1.9% 6
Share of all recorded flights in the period, all legs. · Oct 27, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DCA MCO Ronald Reagan Washington National Airport – Orlando International Airport | 1,224 | 8.2 min | 90.9% | 56 |
| SAT DAL San Antonio International Airport – Dallas Love Field | 399 | 2.3 min | 97.1% | 38 |
| STL LGB St. Louis Lambert International Airport – Long Beach International Airport | 2,539 | 19.8 min | 70.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 2 | 2 | 100.0% | 0 |
| November 2024 | 45 | 45 | 55.6% | 0 |
| December 2024 | 22 | 21 | 66.7% | 1 |
| January 2025 | 23 | 20 | 90.0% | 3 |
| February 2025 | 17 | 17 | 100.0% | 0 |
| March 2025 | 11 | 11 | 54.6% | 0 |
| April 2025 | 2 | 2 | 50.0% | 0 |
| June 2025 | 6 | 6 | 100.0% | 0 |
| July 2025 | 10 | 9 | 88.9% | 1 |
| October 2025 | 37 | 37 | 75.7% | 0 |
| November 2025 | 5 | 5 | 80.0% | 0 |
| December 2025 | 3 | 3 | 66.7% | 0 |
| January 2026 | 1 | 1 | 100.0% | 0 |
| February 2026 | 20 | 20 | 100.0% | 0 |
| March 2026 | 33 | 33 | 72.7% | 0 |
| April 2026 | 10 | 10 | 70.0% | 0 |
| May 2026 | 5 | 5 | 40.0% | 0 |
| June 2026 | 27 | 27 | 85.2% | 0 |
| July 2026 | 29 | 28 | 96.4% | 1 |