WN4215
WN4215 (Southwest Airlines) is a multi-stop service on 19 routes, busiest San Diego to Dallas. Of 382 departures recorded from October 2024 to July 2026, 78.0% left on time, according to the US BTS.
- On-time departures78.0%of 382 flights
- Average delay10.2 min
- July 202627▲ 575.0%vs July 2025
- Cancelled0.0%
- Legs flown under this number19
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 | 2 | 5 | ▲ 150.0% |
| February | 2 | – | – |
| March | 1 | 12 | ▲ 1,100.0% |
| April | 23 | 25 | ▲ 8.7% |
| May | 31 | 25 | ▼ 19.4% |
| June | 8 | 26 | ▲ 225.0% |
| July | 4 | 27 | ▲ 575.0% |
| August | 34 | – | – |
| September | 40 | – | – |
| October | 22 | – | in progress |
| November | 27 | – | – |
| December | 29 | – | – |
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 | 100.0% | 20.0% | ▼ 80.0% |
| February | 100.0% | – | – |
| March | 100.0% | 75.0% | ▼ 25.0% |
| April | 100.0% | 72.0% | ▼ 28.0% |
| May | 80.7% | 68.0% | ▼ 15.7% |
| June | 62.5% | 92.3% | ▲ 47.7% |
| July | 75.0% | 92.6% | ▲ 23.5% |
| August | 85.3% | – | – |
| September | 92.5% | – | – |
| October | 59.1% | – | in progress |
| November | 51.9% | – | – |
| December | 69.0% | – | – |
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 | – | – |
| 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 | 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 100.0% 382
- Cancelled 0.0% 0
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAN DAL San Diego International Airport – Dallas Love Field | 1,899 | 27.3 min | 56.7% | 60 |
| MCI DCA Kansas City International Airport – Ronald Reagan Washington National Airport | 1,524 | 4.7 min | 92.0% | 50 |
| BWI MCI Baltimore/Washington International Thurgood Marshall Airport – Kansas City International Airport | 1,552 | 0.8 min | 94.0% | 50 |
| SAN SJC San Diego International Airport – Mineta San Jose International Airport | 671 | 1.2 min | 85.7% | 49 |
| DEN PIT Denver International Airport – Pittsburgh International Airport | 2,071 | 12.4 min | 67.4% | 49 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 100.0% | 0 |
| November 2024 | 16 | 16 | 62.5% | 0 |
| December 2024 | 6 | 6 | 50.0% | 0 |
| January 2025 | 2 | 2 | 100.0% | 0 |
| February 2025 | 2 | 2 | 100.0% | 0 |
| March 2025 | 1 | 1 | 100.0% | 0 |
| April 2025 | 23 | 23 | 100.0% | 0 |
| May 2025 | 31 | 31 | 80.7% | 0 |
| June 2025 | 8 | 8 | 62.5% | 0 |
| July 2025 | 4 | 4 | 75.0% | 0 |
| August 2025 | 34 | 34 | 85.3% | 0 |
| September 2025 | 40 | 40 | 92.5% | 0 |
| October 2025 | 22 | 22 | 59.1% | 0 |
| November 2025 | 27 | 27 | 51.9% | 0 |
| December 2025 | 29 | 29 | 69.0% | 0 |
| January 2026 | 5 | 5 | 20.0% | 0 |
| March 2026 | 12 | 12 | 75.0% | 0 |
| April 2026 | 25 | 25 | 72.0% | 0 |
| May 2026 | 25 | 25 | 68.0% | 0 |
| June 2026 | 26 | 26 | 92.3% | 0 |
| July 2026 | 27 | 27 | 92.6% | 0 |