WN4001
WN4001 (Southwest Airlines) is a multi-stop service on 20 routes, busiest Tampa to Columbus. Of 419 departures recorded from October 2024 to July 2026, 63.6% left on time, according to the US BTS.
- On-time departures63.6%of 419 flights
- Average delay23.0 min
- July 202626
- Cancelled1.0%
- Legs flown under this number20
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 | 29 | 13 | ▼ 55.2% |
| February | 28 | 11 | ▼ 60.7% |
| March | 27 | 36 | ▲ 33.3% |
| April | 29 | 11 | ▼ 62.1% |
| May | 31 | 5 | ▼ 83.9% |
| June | 4 | 19 | ▲ 375.0% |
| July | – | 26 | – |
| August | 27 | – | – |
| September | 30 | – | – |
| October | 9 | – | in progress |
| November | 20 | – | – |
| December | 17 | – | – |
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 | 64.3% | 53.9% | ▼ 16.2% |
| February | 71.4% | 45.5% | ▼ 36.4% |
| March | 70.4% | 50.0% | ▼ 28.9% |
| April | 82.8% | 72.7% | ▼ 12.1% |
| May | 86.7% | 80.0% | ▼ 7.7% |
| June | 75.0% | 15.8% | ▼ 78.9% |
| July | – | 24.0% | – |
| August | 44.4% | – | – |
| September | 66.7% | – | – |
| October | 88.9% | – | in progress |
| November | 84.2% | – | – |
| December | 52.9% | – | – |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | – | 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 99.0% 415
- Cancelled 1.0% 4
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| TPA CMH Tampa International Airport – John Glenn Columbus International Airport | 1,337 | 9.6 min | 73.5% | 99 |
| PHL BNA Philadelphia International Airport – Nashville International Airport | 1,084 | 27.1 min | 56.9% | 58 |
| PIT HOU Pittsburgh International Airport – William P. Hobby Airport | 1,820 | 17.6 min | 85.7% | 57 |
| TPA AUS Tampa International Airport – Austin Bergstrom International Airport | 1,490 | 63.0 min | 19.5% | 42 |
| ONT SMF Ontario International Airport – Sacramento International Airport | 627 | 17.2 min | 66.7% | 40 |
| PHX SNA Phoenix Sky Harbor International Airport – John Wayne Orange County International Airport | 544 | 22.6 min | 57.6% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 80.0% | 0 |
| November 2024 | 21 | 21 | 95.2% | 0 |
| December 2024 | 16 | 16 | 62.5% | 0 |
| January 2025 | 29 | 28 | 64.3% | 1 |
| February 2025 | 28 | 28 | 71.4% | 0 |
| March 2025 | 27 | 27 | 70.4% | 0 |
| April 2025 | 29 | 29 | 82.8% | 0 |
| May 2025 | 31 | 30 | 86.7% | 1 |
| June 2025 | 4 | 4 | 75.0% | 0 |
| August 2025 | 27 | 27 | 44.4% | 0 |
| September 2025 | 30 | 30 | 66.7% | 0 |
| October 2025 | 9 | 9 | 88.9% | 0 |
| November 2025 | 20 | 19 | 84.2% | 1 |
| December 2025 | 17 | 17 | 52.9% | 0 |
| January 2026 | 13 | 13 | 53.9% | 0 |
| February 2026 | 11 | 11 | 45.5% | 0 |
| March 2026 | 36 | 36 | 50.0% | 0 |
| April 2026 | 11 | 11 | 72.7% | 0 |
| May 2026 | 5 | 5 | 80.0% | 0 |
| June 2026 | 19 | 19 | 15.8% | 0 |
| July 2026 | 26 | 25 | 24.0% | 1 |