WN4021
WN4021 (Southwest Airlines) is a multi-stop service on 28 routes, busiest New Orleans to Tampa. Of 408 departures recorded from October 2024 to July 2026, 79.2% left on time, according to the US BTS.
- On-time departures79.2%of 408 flights
- Average delay10.6 min
- July 202630▼ 3.2%vs July 2025
- Cancelled0.0%
- Legs flown under this number28
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 21 | ▲ 950.0% |
| February | – | 21 | – |
| March | 28 | 26 | ▼ 7.1% |
| April | 10 | 27 | ▲ 170.0% |
| May | 5 | 26 | ▲ 420.0% |
| June | 26 | 30 | ▲ 15.4% |
| July | 31 | 30 | ▼ 3.2% |
| August | 15 | – | – |
| September | 13 | – | – |
| October | 45 | – | in progress |
| November | 5 | – | – |
| December | – | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 0.0% | 100.0% | – |
| February | – | 76.2% | – |
| March | 50.0% | 88.5% | ▲ 76.9% |
| April | 80.0% | 77.8% | ▼ 2.8% |
| May | 80.0% | 53.9% | ▼ 32.7% |
| June | 84.6% | 63.3% | ▼ 25.2% |
| July | 87.1% | 70.0% | ▼ 19.6% |
| August | 80.0% | – | – |
| September | 100.0% | – | – |
| October | 88.9% | – | in progress |
| November | 80.0% | – | – |
| December | – | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
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 100.0% 408
- Cancelled 0.0% 0
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MSY TPA Louis Armstrong New Orleans International Airport – Tampa International Airport | 785 | 9.2 min | 85.3% | 61 |
| RNO PHX Reno Tahoe International Airport – Phoenix Sky Harbor International Airport | 967 | 14.6 min | 63.3% | 49 |
| SFO PHX San Francisco International Airport – Phoenix Sky Harbor International Airport | 1,047 | 2.5 min | 86.4% | 44 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 34 | 34 | 100.0% | 0 |
| November 2024 | 8 | 8 | 75.0% | 0 |
| December 2024 | 5 | 5 | 80.0% | 0 |
| January 2025 | 2 | 2 | 0.0% | 0 |
| March 2025 | 28 | 28 | 50.0% | 0 |
| April 2025 | 10 | 10 | 80.0% | 0 |
| May 2025 | 5 | 5 | 80.0% | 0 |
| June 2025 | 26 | 26 | 84.6% | 0 |
| July 2025 | 31 | 31 | 87.1% | 0 |
| August 2025 | 15 | 15 | 80.0% | 0 |
| September 2025 | 13 | 13 | 100.0% | 0 |
| October 2025 | 45 | 45 | 88.9% | 0 |
| November 2025 | 5 | 5 | 80.0% | 0 |
| January 2026 | 21 | 21 | 100.0% | 0 |
| February 2026 | 21 | 21 | 76.2% | 0 |
| March 2026 | 26 | 26 | 88.5% | 0 |
| April 2026 | 27 | 27 | 77.8% | 0 |
| May 2026 | 26 | 26 | 53.9% | 0 |
| June 2026 | 30 | 30 | 63.3% | 0 |
| July 2026 | 30 | 30 | 70.0% | 0 |