WN4284
WN4284 (Southwest Airlines) is a multi-stop service on 21 routes, busiest St Louis to New Orleans. Of 561 departures recorded from October 2024 to July 2026, 70.4% left on time, according to the US BTS.
- On-time departures70.4%of 561 flights
- Average delay16.1 min
- July 202618▼ 73.5%vs July 2025
- Cancelled1.8%
- Legs flown under this number21
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 | 28 | 5 | ▼ 82.1% |
| February | 26 | – | – |
| March | 5 | 27 | ▲ 440.0% |
| April | 26 | 6 | ▼ 76.9% |
| May | 34 | 2 | ▼ 94.1% |
| June | 65 | 16 | ▼ 75.4% |
| July | 68 | 18 | ▼ 73.5% |
| August | 35 | – | – |
| September | 30 | – | – |
| October | 43 | – | in progress |
| November | 29 | – | – |
| 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 | 78.3% | 100.0% | ▲ 27.8% |
| February | 80.8% | – | – |
| March | 60.0% | 65.4% | ▲ 9.0% |
| April | 80.8% | 100.0% | ▲ 23.8% |
| May | 100.0% | 100.0% | 0.0% |
| June | 62.5% | 12.5% | ▼ 80.0% |
| July | 64.2% | 11.8% | ▼ 81.7% |
| August | 57.1% | – | – |
| September | 60.0% | – | – |
| October | 69.8% | – | in progress |
| November | 89.7% | – | – |
| December | 87.1% | – | – |
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 | 5 | 1 | ▼ 80.0% |
| February | 0 | – | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| 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 98.2% 551
- Cancelled 1.8% 10
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
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| STL MSY St. Louis Lambert International Airport – Louis Armstrong New Orleans International Airport | 974 | 7.3 min | 80.6% | 103 |
| SBA OAK Santa Barbara Municipal Airport – Oakland San Francisco Bay Airport | 424 | -1.2 min | 88.9% | 64 |
| PHX SAN Phoenix Sky Harbor International Airport – San Diego International Airport | 489 | 20.1 min | 70.0% | 60 |
| LGB SJC Long Beach International Airport – Mineta San Jose International Airport | 522 | -0.6 min | 91.4% | 58 |
| SJC DEN Mineta San Jose International Airport – Denver International Airport | 1,522 | 18.2 min | 59.7% | 57 |
| SFO DEN San Francisco International Airport – Denver International Airport | 1,553 | 64.2 min | 12.1% | 34 |
| PIT DAL Pittsburgh International Airport – Dallas Love Field | 1,704 | 22.4 min | 71.9% | 33 |
| PIT BNA Pittsburgh International Airport – Nashville International Airport | 743 | 25.2 min | 70.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 84.6% | 0 |
| November 2024 | 26 | 26 | 80.8% | 0 |
| December 2024 | 28 | 28 | 78.6% | 0 |
| January 2025 | 28 | 23 | 78.3% | 5 |
| February 2025 | 26 | 26 | 80.8% | 0 |
| March 2025 | 5 | 5 | 60.0% | 0 |
| April 2025 | 26 | 26 | 80.8% | 0 |
| May 2025 | 34 | 34 | 100.0% | 0 |
| June 2025 | 65 | 64 | 62.5% | 1 |
| July 2025 | 68 | 67 | 64.2% | 1 |
| August 2025 | 35 | 35 | 57.1% | 0 |
| September 2025 | 30 | 30 | 60.0% | 0 |
| October 2025 | 43 | 43 | 69.8% | 0 |
| November 2025 | 29 | 29 | 89.7% | 0 |
| December 2025 | 31 | 31 | 87.1% | 0 |
| January 2026 | 5 | 4 | 100.0% | 1 |
| March 2026 | 27 | 26 | 65.4% | 1 |
| April 2026 | 6 | 6 | 100.0% | 0 |
| May 2026 | 2 | 2 | 100.0% | 0 |
| June 2026 | 16 | 16 | 12.5% | 0 |
| July 2026 | 18 | 17 | 11.8% | 1 |