WN4306
WN4306 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Phoenix to Nashville. Of 478 departures recorded from October 2024 to July 2026, 70.6% left on time, according to the US BTS.
- On-time departures70.6%of 478 flights
- Average delay14.1 min
- July 202618
- Cancelled1.7%
- 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 periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 23 | 35 | ▲ 52.2% |
| February | 9 | 35 | ▲ 288.9% |
| March | 24 | 36 | ▲ 50.0% |
| April | 26 | 10 | ▼ 61.5% |
| May | 25 | 6 | ▼ 76.0% |
| June | 4 | 16 | ▲ 300.0% |
| July | – | 18 | – |
| August | 15 | – | – |
| September | 17 | – | – |
| October | 25 | – | in progress |
| November | 51 | – | – |
| December | 48 | – | – |
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 | 72.7% | 71.4% | ▼ 1.8% |
| February | 100.0% | 97.1% | ▼ 2.9% |
| March | 83.3% | 77.8% | ▼ 6.7% |
| April | 84.6% | 100.0% | ▲ 18.2% |
| May | 41.7% | 100.0% | ▲ 140.0% |
| June | 100.0% | 25.0% | ▼ 75.0% |
| July | – | 38.9% | – |
| August | 53.3% | – | – |
| September | 58.8% | – | – |
| October | 92.0% | – | in progress |
| November | 63.0% | – | – |
| December | 57.5% | – | – |
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 | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 5 | – | – |
| December | 1 | – | – |
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 98.3% 470
- Cancelled 1.7% 8
Share of all recorded flights in the period, all legs. · Oct 15, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHX BNA Phoenix Sky Harbor International Airport – Nashville International Airport | 2,326 | 6.0 min | 77.8% | 73 |
| LGB LAS Long Beach International Airport – Harry Reid International Airport | 372 | -1.4 min | 94.8% | 58 |
| LAX LAS Los Angeles International Airport – Harry Reid International Airport | 380 | 30.5 min | 50.9% | 57 |
| BNA BWI Nashville International Airport – Baltimore/Washington International Thurgood Marshall Airport | 944 | 21.9 min | 62.5% | 49 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 100.0% | 0 |
| November 2024 | 27 | 27 | 74.1% | 0 |
| December 2024 | 22 | 22 | 63.6% | 0 |
| January 2025 | 23 | 22 | 72.7% | 1 |
| February 2025 | 9 | 9 | 100.0% | 0 |
| March 2025 | 24 | 24 | 83.3% | 0 |
| April 2025 | 26 | 26 | 84.6% | 0 |
| May 2025 | 25 | 24 | 41.7% | 1 |
| June 2025 | 4 | 4 | 100.0% | 0 |
| August 2025 | 15 | 15 | 53.3% | 0 |
| September 2025 | 17 | 17 | 58.8% | 0 |
| October 2025 | 25 | 25 | 92.0% | 0 |
| November 2025 | 51 | 46 | 63.0% | 5 |
| December 2025 | 48 | 47 | 57.5% | 1 |
| January 2026 | 35 | 35 | 71.4% | 0 |
| February 2026 | 35 | 35 | 97.1% | 0 |
| March 2026 | 36 | 36 | 77.8% | 0 |
| April 2026 | 10 | 10 | 100.0% | 0 |
| May 2026 | 6 | 6 | 100.0% | 0 |
| June 2026 | 16 | 16 | 25.0% | 0 |
| July 2026 | 18 | 18 | 38.9% | 0 |