WN4223
WN4223 (Southwest Airlines) is a multi-stop service on 22 routes, busiest Tucson to San Diego. Of 185 departures recorded from October 2024 to July 2026, 69.6% left on time, according to the US BTS.
- On-time departures69.6%of 185 flights
- Average delay18.3 min
- July 202614
- Cancelled0.5%
- Legs flown under this number22
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 | 1 | 6 | ▲ 500.0% |
| February | 2 | 3 | ▲ 50.0% |
| March | 1 | 28 | ▲ 2,700.0% |
| April | 6 | 6 | 0.0% |
| May | 9 | 1 | ▼ 88.9% |
| June | 1 | 12 | ▲ 1,100.0% |
| July | – | 14 | – |
| August | 7 | – | – |
| September | 8 | – | – |
| October | 18 | – | in progress |
| November | 24 | – | – |
| 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 | 0.0% | 83.3% | – |
| February | 50.0% | 100.0% | ▲ 100.0% |
| March | 100.0% | 40.7% | ▼ 59.3% |
| April | 83.3% | 33.3% | ▼ 60.0% |
| May | 88.9% | 0.0% | ▼ 100.0% |
| June | 100.0% | 75.0% | ▼ 25.0% |
| July | – | 85.7% | – |
| August | 57.1% | – | – |
| September | 62.5% | – | – |
| October | 38.9% | – | in progress |
| November | 91.7% | – | – |
| December | 93.1% | – | – |
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 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 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 99.5% 184
- Cancelled 0.5% 1
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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| TUS SAN Tucson International Airport – San Diego International Airport | 591 | 1.2 min | 94.3% | 53 |
| LGA DEN LaGuardia Airport – Denver International Airport | 2,600 | 49.8 min | 37.5% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 3 | 3 | 66.7% | 0 |
| November 2024 | 2 | 2 | 50.0% | 0 |
| December 2024 | 4 | 4 | 50.0% | 0 |
| January 2025 | 1 | 1 | 0.0% | 0 |
| February 2025 | 2 | 2 | 50.0% | 0 |
| March 2025 | 1 | 1 | 100.0% | 0 |
| April 2025 | 6 | 6 | 83.3% | 0 |
| May 2025 | 9 | 9 | 88.9% | 0 |
| June 2025 | 1 | 1 | 100.0% | 0 |
| August 2025 | 7 | 7 | 57.1% | 0 |
| September 2025 | 8 | 8 | 62.5% | 0 |
| October 2025 | 18 | 18 | 38.9% | 0 |
| November 2025 | 24 | 24 | 91.7% | 0 |
| December 2025 | 29 | 29 | 93.1% | 0 |
| January 2026 | 6 | 6 | 83.3% | 0 |
| February 2026 | 3 | 3 | 100.0% | 0 |
| March 2026 | 28 | 27 | 40.7% | 1 |
| April 2026 | 6 | 6 | 33.3% | 0 |
| May 2026 | 1 | 1 | 0.0% | 0 |
| June 2026 | 12 | 12 | 75.0% | 0 |
| July 2026 | 14 | 14 | 85.7% | 0 |