WN4838
WN4838 (Southwest Airlines) is a multi-stop service on 11 routes, busiest Phoenix to Oakland. Of 120 departures recorded from October 2024 to July 2026, 78.3% left on time, according to the US BTS.
- On-time departures78.3%of 120 flights
- Average delay7.6 min
- July 202617
- Cancelled0.0%
- Legs flown under this number11
Recorded departures by month
Short series — WN4838 has only 11 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods8 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 14 | ▲ 1,300.0% |
| February | – | 19 | – |
| March | – | 2 | – |
| April | – | – | – |
| May | – | – | – |
| June | – | 15 | – |
| July | – | 17 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 9 | – | – |
| December | 15 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Short series — WN4838 has only 11 months so far. Enough to show the level now, not enough to read a trend.
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 periods8 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 0.0% | 78.6% | – |
| February | – | 63.2% | – |
| March | – | 100.0% | – |
| April | – | – | – |
| May | – | – | – |
| June | – | 100.0% | – |
| July | – | 94.1% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 55.6% | – | – |
| December | 73.3% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Short series — WN4838 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Short series — WN4838 has only 11 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods8 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | – | 0 | – |
| April | – | – | – |
| May | – | – | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | 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% 120
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Oct 14, 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 |
|---|---|---|---|---|
| PHX OAK Phoenix Sky Harbor International Airport – Oakland San Francisco Bay Airport | 1,039 | -5.1 min | 96.9% | 32 |
| STL DEN St. Louis Lambert International Airport – Denver International Airport | 1,236 | 14.0 min | 70.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 7 | 7 | 71.4% | 0 |
| November 2024 | 14 | 14 | 78.6% | 0 |
| December 2024 | 7 | 7 | 85.7% | 0 |
| January 2025 | 1 | 1 | 0.0% | 0 |
| November 2025 | 9 | 9 | 55.6% | 0 |
| December 2025 | 15 | 15 | 73.3% | 0 |
| January 2026 | 14 | 14 | 78.6% | 0 |
| February 2026 | 19 | 19 | 63.2% | 0 |
| March 2026 | 2 | 2 | 100.0% | 0 |
| June 2026 | 15 | 15 | 100.0% | 0 |
| July 2026 | 17 | 17 | 94.1% | 0 |