WN4311
WN4311 (Southwest Airlines) is a multi-stop service on 15 routes, busiest Nashville to Tampa. Of 493 departures recorded from October 2024 to July 2026, 78.5% left on time, according to the US BTS.
- On-time departures78.5%of 493 flights
- Average delay10.3 min
- July 202640
- Cancelled0.2%
- 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 | 32 | 9 | ▼ 71.9% |
| February | 20 | 25 | ▲ 25.0% |
| March | 30 | 3 | ▼ 90.0% |
| April | 30 | 24 | ▼ 20.0% |
| May | 31 | 30 | ▼ 3.2% |
| June | 4 | 38 | ▲ 850.0% |
| July | – | 40 | – |
| August | 27 | – | – |
| September | 30 | – | – |
| October | 1 | – | in progress |
| November | 19 | – | – |
| 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 | 81.3% | 77.8% | ▼ 4.3% |
| February | 60.0% | 84.0% | ▲ 40.0% |
| March | 76.7% | 100.0% | ▲ 30.4% |
| April | 96.7% | 95.8% | ▼ 0.9% |
| May | 90.0% | 100.0% | ▲ 11.1% |
| June | 100.0% | 42.1% | ▼ 57.9% |
| July | – | 55.0% | – |
| August | 77.8% | – | – |
| September | 73.3% | – | – |
| October | 100.0% | – | in progress |
| November | 94.7% | – | – |
| December | 82.4% | – | – |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | – | 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 99.8% 492
- Cancelled 0.2% 1
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BNA TPA Nashville International Airport – Tampa International Airport | 987 | 12.8 min | 73.1% | 78 |
| SJU TPA Luis Munoz Marin International Airport – Tampa International Airport | 1,991 | 17.8 min | 75.9% | 58 |
| SLC SMF Salt Lake City International Airport – Sacramento International Airport | 854 | -4.1 min | 98.3% | 57 |
| LGA DAL LaGuardia Airport – Dallas Love Field | 2,219 | 0.0 min | 94.6% | 57 |
| MSY MCO Louis Armstrong New Orleans International Airport – Orlando International Airport | 886 | 26.4 min | 49.0% | 49 |
| SJC AUS Mineta San Jose International Airport – Austin Bergstrom International Airport | 2,372 | 6.1 min | 87.5% | 40 |
| BOS BWI Boston Logan International Airport – Baltimore/Washington International Thurgood Marshall Airport | 594 | 25.3 min | 75.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 31 | 31 | 90.3% | 0 |
| December 2024 | 32 | 32 | 59.4% | 0 |
| January 2025 | 32 | 32 | 81.3% | 0 |
| February 2025 | 20 | 20 | 60.0% | 0 |
| March 2025 | 30 | 30 | 76.7% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 31 | 30 | 90.0% | 1 |
| June 2025 | 4 | 4 | 100.0% | 0 |
| August 2025 | 27 | 27 | 77.8% | 0 |
| September 2025 | 30 | 30 | 73.3% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 19 | 19 | 94.7% | 0 |
| December 2025 | 17 | 17 | 82.4% | 0 |
| January 2026 | 9 | 9 | 77.8% | 0 |
| February 2026 | 25 | 25 | 84.0% | 0 |
| March 2026 | 3 | 3 | 100.0% | 0 |
| April 2026 | 24 | 24 | 95.8% | 0 |
| May 2026 | 30 | 30 | 100.0% | 0 |
| June 2026 | 38 | 38 | 42.1% | 0 |
| July 2026 | 40 | 40 | 55.0% | 0 |